80LARC18R0002_Draft_SOW.pdf

STATEMENT OF WORK 80LARC18R002

STATEMENT OF WORK (SOW)

FORCE MEASUREMENT SUPPORT SERVICES (FMSS)

Version 2.2 04 April 2018

DRAFT

1 Introduction

1.1 Scope of Work

1.2 Facilities

1.3 General Requirements

1.3.1 Government-Provided Information and Databases

1.3.2 Technical Excellence

1.3.3 Effective Leadership, Management, and Processes

1.3.4 Critical Contractor Interfaces

1.3.5 NASA/Contractor Partnership

1.3.6 Worker Qualifications

1.3.7 Technical (Customer) Services Desk for Task Processing, Records Management, and

Performance Assessment

2 Description of Services

2.1 Overview of General FMSS Requirements

2.2 Engineering Design, Evaluation, and Analysis of Single- and Multi-Axis Force

Transducers

2.2.1 Engineering Stress Analysis

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2.2.2 Engineering Drafting

2.2.3 Quality Metrics

2.3 Conventional Fabrication Services

2.3.1 Force Transducer Fabrication, Modification, and Repair

2.3.2 Force Transducer Calibration and Loading Hardware and System Fabrication, Modification, and Repair

2.3.3 Wind-Tunnel Model Component and Model Support Hardware Fabrication, Modification, Repair, and Assembly

2.4 Force Transducer Instrumentation Services

2.4.1 Quality Metrics

2.5 Material and Structures Strain Instrumentation Services

2.5.1 Quality Metrics

2.6 Single- and Multi-Axis Force Transducer Calibration Services

2.6.1 Off-Site Laboratory Calibration Standards

2.6.2 Quality Metrics

2.7 Force Transducer and Strain Instrumentation LaRC Facility Support and

Troubleshooting Services

2.7.1 Quality Metrics

3 Data Deliverables

4 References

1 Introduction

The goal of the Force Measurement Support Services (FMSS) contract is to provide high quality force and strain measurement capabilities for NASA’s programs and projects. This is to include, STATEMENT OF WORK 80LARC18R002 but not limited to, the development of new capabilities and technologies that will evolve over the life of the contract. The Contractor shall develop force and strain measurement capabilities that incorporate technological advancements to meet current and future aerospace research challenges.

While the majority of the work is directly in support of Langley Research Center (LaRC), other

NASA centers, Government agencies, and industry partners may be supported, occasionally at remote sites.

1.1 Scope of Work

The Contractor shall provide support operations for LaRC through engineering design, drafting, and manufacturing, instrumenting, repairing, calibrating, and evaluating new and existing force and strain instrumentation. The Contractor shall be required to perform services on-site during normal working hours of 07:00 AM to 05:00 PM and off-site as needed. The Contractor shall electronically interface with NASA personnel using computer codes of standard file formats (e.g.

AutoCAD, Pro Engineer, Pro Mechanica, MS Office Suite, LabVIEW, LASIRS (Langley

Aeronautics & Structures Instrumentation Request System), MATLAB, Design-Expert, JMP) regarding geometry, drawings, analysis, and reports.

The Contracting Officer’s Representative (COR) with assistance from the CO will make the determination on cost type prior to sending the task to the Contractor for estimating, based on the complexity of the requirement and risk as determined by the Government.

The Contractor shall, except as otherwise specified, furnish all personnel, training, facilities, equipment, materials, transportation, and management necessary to perform the following major categories of work. All work performed shall be in accordance with the referenced documents listed at the end of each section and summarized in Section 4.

1.2 Facilities

The Contractor shall furnish services to all LaRC facilities and other NASA installations. The

Government will provide on-site technical and office space for Contractor employees as indicated in Clause 1852.245-71 INSTALLATION-ACCOUNTABLE GOVERNMENT PROPERTY

(JAN 2011) ALTERNATE I (JAN 2011).

It is expected that work will be completed by the Contractor at both on- and off-site facilities.

1.3 General Requirements

The Contractor shall develop processes and initiatives to achieve the following specific contract goals while meeting all SOW requirements and performance standards. All work shall meet the requirements specified herein and shall be accomplished in conformance with approved and accepted industry standards ;equipment manufacture recommendations; all applicable LaRC, local, state, and federal standards; and all applicable codes as referenced in this document.

1.3.1 Government-Provided Information and Databases

The Government will provide access to the following databases for use by all contractors as needed:

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1. Langley Aeronautics & Structures Instrumentation Request System (LASIRS): database to track, report, and store data for all work issued to all Contractors; Contractor shall use

LASIRS to enter task estimates, collect customer surveys, and show work history

2. FMSS Server: centralized repository for engineering reports and drawings located within the NASA IP address space

3. aeroCOMPASS Balance Server: centralized repository for official force transducer calibration files

4. Metrology Information System Serving Langley (MISSL): centralized repository for standards calibration reports, repair records and historical records for all Measurement and

Test Equipment (M&TE)

The Contractor shall retrieve and upload documentation as required to the appropriate database.

1.3.2 Technical Excellence

The Contractor shall ensure excellence in providing safe, accurate, secure, timely, and efficient support to enable NASA to increase value to its research customers. Basic characteristics and attributes of technical excellence include, but are not limited to:

1. Experienced and competent technical leaders in each technical area of the SOW.

2. Comprehensive knowledge of the NASA infrastructure that effectively and consistently meets its requirements.

3. Trained personnel that are experienced, versatile, and readily adaptable to new techniques and technologies.

4. Proactive research customer engagement resulting in customer trust and satisfaction at

NASA.

1.3.3 Effective Leadership, Management, and Processes

The Contractor shall provide quality and experienced leadership, management, and employees that deliver value to the NASA research community. Basic characteristics and attributes of effective leadership, management, and processes include, but are not limited to:

1. A strong, demonstrated experience to:

a. Maintain, repair, and modify small and large complex machining operations, instrumentation support, engineering services, and calibration.

b. Manage the services necessary to meet contractual requirements.

c. Manage change:

i. Personnel and scheduling flexibility efficiency

ii. Effective lines of communication with all NASA partners, customers, and interfacing Contractors

iii. Research & Development efforts

1.3.4 Critical Contractor Interfaces

The Contractor will primarily interface with the Contracting Officer (CO) and Contracting

Officer’s Representative (COR) to address and resolve contractual and technical issues.

Additionally, research test planning and execution will require interface with research customers, STATEMENT OF WORK 80LARC18R002 other service providers at LaRC and NASA, and external partners; scheduling priorities and repair work will require interfaces with facility occupants, including Government and other contractor employees; and IT services will require interface with all LaRC users of the contractor-managed

IT systems. However, all technical direction will be provided in writing from the COR.

1.3.5 NASA/Contractor Partnership

The Contractor shall participate in the successful creation of a beneficial NASA/Contractor partnership. Basic characteristics and attributes of a successful partnership include specific objections. In addition, NASA and the Contractor will collaboratively:

1. Resolve issues expeditiously and to the satisfaction of customers.

2. Participate in NASA-sponsored partnering sessions to be conducted at NASA. The goal of this initiative is to develop and implement a contract management strategy that becomes mutually beneficial and ingrained within the NASA culture.

1.3.6 Worker Qualifications

The Contractor shall supply and administer a flexible, technically competent, and qualified staff, integrated appropriately across all areas of the contract in order to fully support and accomplish the requirements. The Contractor shall ensure all personnel are qualified on the basis of appropriate education, training, experience, and certification to perform assigned tasks. The degree of skill of individuals shall be commensurate with that required for the work. (See Exhibit G)

1.3.7 Technical (Customer) Services Desk for Task Processing, Records Management, and

Performance Assessment

All work under this contract will be initiated in LASIRS in accordance with the Task Ordering procedures defined in the contract. Either the customer or the COR shall initiate tasks in LASIRS.

Following task initiation, the COR will make the determination as to whether the task will be performed on a fixed price (FP) basis or a cost plus fixed fee (CPFF) basis. At that time, the COR will forward the task to the Contractor(s) for estimating. Any task modifications needed will be entered into LASIRS by the COR or the Contractor if authorized by the COR.

Though LASIRS represents a virtual technical services desk, the Contractor shall have a technical services representative to facilitate Government interaction at its place of business.

1.3.7.1 Documentation

The Contractor shall maintain a copy of all records, reports and data generated during the period of performance of this contract. The Contractor's repository of all records generated as part of this contract shall be organized and the Contractor shall have the ability to locate and identify any necessary information, if needed, at any time during the period of performance of this contract.

1.3.7.2 Contract Performance Management and Assessment

The Contractor shall measure and report to the COR on timeliness, quality and overall customer satisfaction in all areas of contract service delivery and outcomes. The Contractor shall post

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monthly summaries of the performance evaluation results to the FMSS LASIRS website ensuring results are available only to the COR and other personnel designated by the COR without

Contractor intervention. The Contractor shall review and analyze customer feedback collected by the contractor’s FMSS Customer Services Desk in order to identify new customer requirements and determine recurring problems with Contractor services and supported IT applications. The

Contract manager shall present the review findings at monthly progress status meetings or as-requested by the COR.

2 Description of Services

2.1 Overview of General FMSS Requirements

The Contractor shall provide force and strain measurement technical and operational support in any of the following, but not limited to, areas:

engineering design, evaluation, and analysis of single- and multi-axis force transducers, conventional fabrication services for existing and new single- and multi-axis force transducers, calibration hardware and systems, and wind-tunnel model components and model support hardware additive manufacturing services for existing and new single- and multi-axis force transducers, calibration loading hardware, wind-tunnel model components, and model support hardware, installation and support of strain-measuring instrumentation calibration of single- and multi-axis force transducers.

The Contractor shall provide computer equipment and use updated software to perform off-site work. The Contractor shall ensure that all software versions are compatible with the versions being used by NASA to ensure that NASA can review and process all files delivered by the

Contractor.

The Contractor(s) shall keep a master schedule that tracks all open NASA jobs. This master schedule shall be kept current at all times, and a current revision shall be provided to the COR monthly. The master schedule shall track the requested due date from the NASA customer, all skill classifications that are required to work on the task along with durations required in each area, overall task percent completion, and clearly identify any tasks that run past their due date.

2.2 Engineering Design, Evaluation, and Analysis of Single- and Multi-Axis Force Transducers

The Contractor shall provide engineering design, evaluation, and analysis support of single- and multi-axis strain-gage force transducers. Transducers include, but are not limited to, wind-tunnel force balances, load cells, and tension cells. Force transducers will typically range from 0.25 inches to 30 inches in diameter with measurement ranges from 0.001 to 200,000 pounds-force of force and 0.005 to 1,500,000 inch-pounds-force of moment. Measurement accuracy is typically on the order of 0.25 percent (95% confidence interval) of full-scale output.

Related force transducer hardware includes but is not limited to the following:

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water-cooling shields for high-temperature transducers, air shields, calibration and loading hardware and systems keys dowel pins, and stings and model adapters.

This category of work shall encompass but is not limited to the following:

force transducer engineering studies and stress analyses, preparation of design-related documentation such as formal drawings (detail, wiring diagram, calibration and loading hardware), calculations, and corresponding data used in analyses, monitoring of force transducers and associated hardware through final calibration and evaluation and assessing the results to ensure the achievement of required performance requirements, and evaluating and monitoring wind-tunnel researchers’ use and performance of force transducers.

2.2.1 Engineering Stress Analysis

The Contractor shall provide formal documentation of engineering stress analyses (either analytical, computational, or both) for review by the Government. For computational analyses, the Contractor shall provide electronically the CAD model to the Government. Additionally, the

Contractor shall follow the Government-specified format for formal documentation and adhere to structural safety requirements specified in each task order.

2.2.2 Engineering Drafting

The Contractor shall provide engineering drafting support. All drawings shall conform to specified handbooks or procedures. The Contractor shall fill out a drawing card (digital or hard copy) for all new drawings and drawing revisions and submit them to the NASA drawing files system.

2.2.3 Quality Metrics

All stress analyses reports and documentation shall contain the following information or conform to specified handbooks or procedures:

1. Conformance with NASA LaRC Wind-Tunnel Model Systems Criteria Manual (LPR

1710.15).

2. A cover sheet designating the personnel responsible for the analyses, checking the analyses, and approving the analyses with signature blocks provided.

3. For drafting tasks,

a. Conformance to LPR 7320.1, ANSI Y14.5M and MIL STD 100 drafting standards.

b. All specifications (dimensions; tolerances; surface finishes; materials; material conditions; material certifications and inspections; fitting requirements and procedure designations; axis system designation; assembly instructions; color

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codes; electrical component designations, schematics and installation requirements or procedures; pin outs; and title blocks and drawing numbers) to properly manufacture, modify, strain-gage, calibrate, inspect, assemble, or perform a specified function are required.

Reference:

(Reference #2) Department of Defense Standard Practice for Engineering Drawings, MIL-

STD-100, Rev G or most current version.

(Reference #3) Geometric Dimensioning and Tolerancing, ANSI Y14.5M, 2009 or most current version.

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15 Rev J or most current version.

2.3 Conventional Fabrication Services

2.3.1 Force Transducer Fabrication, Modification, and Repair

The Contractor shall fabricate, modify, and repair existing and new force measuring transducers such as single- and multi-piece balances, load cells, and tension links. This also includes fabricating, modifying and repairing related accessories (water-cooling shields, wind shields, keys, and dowel pins). The machining process will frequently utilize conventional fabrication techniques and electrical discharge machining (EDM) equipment. All force transducers must be designed to meet LaRC criteria as outlined in LPR 1710.15. The Contractor shall ensure that all individuals involved in the fabrication process, such as design engineers and Quality Assurance personnel, be familiarized with LPR 1710.15 requirements and take action to adhere to its requirements. Failure to meet the LPR 1710.15 requirements may result in LaRC's inability to accept hardware and possibly require re-fabrication of components. LaRC Quality Assurance personnel may perform final QA inspections and acceptance at NASA LaRC.

Fabrication, modification, and repair of force transducer hardware includes, but is not limited to, the following:

front-end expander hardware, water-cooling shields for high-temperature transducers, cage shields, keys, and dowel pins.

The Contractor shall complete a form DD250 for final acceptance by the Government of new force transducers prior to delivery.

Reference:

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15, or most current version.

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2.3.1.1 Quality Assurance and Inspection

The Contractor shall provide quality assurance inspections of all force transducers fabricated, modified, or repaired, including, but not limited to, the following documentation with the appropriate signatures:

1. Material certifications

2. Gage fit and taper inspection reports

3. Dimensional inspections (CMM or non-CMM) of machined or fabricated parts listed against drawing specifications in a summary table with non-conformances clearly identified

4. Heat-treatment report in accordance with AMS2759E

5. Ultrasonic testing (UT) reports

6. Procedures that shall be followed require a document stating the procedure was followed with a signature of the responsible person

The Contractor shall ascertain what components require UT early in the design process as well as what level of UT. The requirement for UT of critically-stressed components, as stated in LPR

1710.15. The Contractor shall ensure compliance with the UT requirement of LPR 1710.15. The

Contractor shall ensure that designated Contractor’s personnel, such as design engineers, Quality

Assurance personnel, and purchasing agents be familiarized with this requirement and take action to ensure compliance of the requirement. Failure to meet this requirement may result in LaRC’s inability to accept hardware and possibly require re-fabrication of components. LaRC Model

Systems engineers are available to assist the Contractor in identifying critically-stressed components, if requested.

The Contractor shall perform or have performed all NDEs and tests as required for fabrication and checkout. NDE personnel shall be certified to the American Society for Nondestructive Testing

(ASNT) for Qualification and Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-

189, DATE or equivalent unless otherwise specified. Procedures for NDE (visual, liquid penetrate, magnetic particle, eddy current, radiography, or ultrasonic) shall as a minimum be established in accordance with the American Society for Testing Materials (ASTM) or equivalent unless otherwise specified. Inspection reports shall state the qualifying standards met and procedures used. All inspection reports and X-Ray photographs shall be submitted with completed tasks or earlier, if requested. All inspections are subject to review and/or witness by NASA LaRC representatives.

Reference:

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15 or most current version.

(Reference #1) American Society for Nondestructive Testing (ASNT) for Qualification and

Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-189, or most current version.

(Reference #4) Heat Treatment of Steel Parts, General Requirements, SAE, AMS2759E, April 2014 or most current version.

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2.3.1.2 Quality Metrics

The items in Section 2.3.1 shall meet the requirements specified by their respective drawings and the documentation required.

2.3.2 Force Transducer Calibration and Loading Hardware and System Fabrication, Modification, and Repair

The Contractor shall fabricate, modify, and repair existing and new hardware and systems used in calibrating and loading force transducers. The machining process will frequently utilize conventional fabrication techniques and electrical discharge machining (EDM) equipment. The

Contractor shall ensure that any fabrication, modification and repair complies with the requirements of LPR 1710.15. Failure to meet the LPR 1710.15 requirements may result in LaRC's inability to accept hardware and possibly require re-fabrication of components. LaRC Quality

Assurance personnel may perform final QA inspections and acceptance at NASA LaRC.

Work includes, but is not limited to, the following:

mating surface inspections, balance calibration fixtures and SVS templates, calibration system adapters, related loading hardware (e.g. moment arms), and dowel pin and key fabrication.

Reference:

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15 Rev J or most current version.

2.3.2.1 Quality Assurance and Inspection

The Contractor shall provide quality assurance inspections of all hardware fabricated, modified, or repaired, including, but not limited to, the following:

1. Material certifications

2. Gage fit and taper inspection reports

3. Dimensional inspections (CMM or non-CMM) of machined or fabricated parts listed against drawing specifications in a summary table with non-conformances clearly identified

4. Heat-treatment report in accordance with AMS2759E

5. Ultrasonic testing (UT) report

The Contractor shall ascertain what components require UT early in the design process as well as what level of UT. The requirement for UT of critically-stressed components, as stated in LPR

1710.15. The Contractor shall ensure compliance with the UT requirement of LPR 1710.15. The

Contractor shall ensure that designated Contractor’s personnel, such as design engineers, Quality

Assurance personnel, and purchasing agents be familiarized with this requirement and take action

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to ensure compliance of the requirement. Failure to meet this requirement may result in LaRC’s inability to accept hardware and possibly require re-fabrication of components.

The Contractor shall perform or have performed all NDEs and tests as required for fabrication and checkout. NDE personnel shall be certified to the American Society for Nondestructive Testing

(ASNT) for Qualification and Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-

189, DATE or equivalent unless otherwise specified. Procedures for NDE (visual, liquid penetrate, magnetic particle, eddy current, radiography, or ultrasonic) shall as a minimum be established in accordance with the American Society for Testing Materials (ASTM) or equivalent unless otherwise specified. Inspection reports shall state the qualifying standards met and procedures used. All inspection reports and X-Ray photographs shall be submitted with completed tasks or earlier, if requested. All inspections are subject to review and/or witness by NASA LaRC representatives.

Reference:

(Reference #1) American Society for Nondestructive Testing (ASNT) for Qualification and

Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-189-2011 or most current version.

(Reference #4) Heat Treatment of Steel Parts, General Requirements, SAE, AMS2759E, April 2014 or most current version.

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15, Rev J , or most current version.

2.3.2.2 Quality Metrics

The items in Section 2.3.2 shall meet the requirements specified by their respective drawings and the documentation required.

2.3.3 Wind-Tunnel Model Component and Model Support Hardware Fabrication, Modification, Repair, and Assembly

The Contractor shall fabricate, modify, repair, and assemble existing and new wind-tunnel model components and model support hardware. This includes but is not limited to the following:

fabricating, modifying and repairing mating surfaces, stings, model adapters, model hardware, dowel pins, and keys. The Contractor shall ensure that any fabrication, modification and repair comply with the requirements of LPR 1710.15. Failure to meet the LPR 1710.15 requirements may result in LaRC's inability to accept hardware and possibly require re-fabrication of components. LaRC Quality Assurance personnel may perform final QA inspections and acceptance at NASA LaRC.

The Contractor shall complete a form DD250 for final acceptance by the Government prior to delivery for each awarded task.

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2.3.3.1 Quality Assurance and Inspection

The Contractor shall provide quality assurance inspections of all hardware fabricated, modified, or repaired, including, but not limited to, the following:

1. Material certifications

2. Gage fit and taper inspection reports

3. Dimensional inspections (CMM or non-CMM) of machined or fabricated parts listed against drawing specifications in a summary table with non-conformances clearly identified

4. Heat-treatment report in accordance with AMS2759E

5. Ultrasonic testing (UT) report

The Contractor shall ascertain what components require UT early in the design process as well as what level of UT. The requirement for UT of critically-stressed components, as stated in LPR

1710.15. The Contractor shall ensure compliance with the UT requirement of LPR 1710.15. The

Contractor shall ensure that designated Contractor’s personnel, such as design engineers, Quality

Assurance personnel, and purchasing agents be familiarized with this requirement and take action to ensure compliance of the requirement. Failure to meet this requirement may result in LaRC’s inability to accept hardware and possibly require re-fabrication of components. LaRC Model

Systems engineers are available to assist the Contractor in identifying critically-stressed components, if requested.

The Contractor shall perform or have performed all NDEs and tests as required for fabrication and checkout. NDE personnel shall be certified to the American Society for Nondestructive Testing

(ASNT) for Qualification and Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-

189, DATE or equivalent unless otherwise specified. Procedures for NDE (visual, liquid penetrate, magnetic particle, eddy current, radiography, or ultrasonic) shall as a minimum be established in accordance with the American Society for Testing Materials (ASTM) or equivalent unless otherwise specified. Inspection reports shall state the qualifying standards met and procedures used. All inspection reports and X-Ray photographs shall be submitted with completed tasks or earlier, if requested. All inspections are subject to review and/or witness by NASA LaRC representatives.

Reference:

(Reference #1) American Society for Nondestructive Testing (ASNT) for Qualification and

Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-189-2011 or most current version.

(Reference #4) Heat Treatment of Steel Parts, General Requirements, SAE, AMS2759E, April 2014 or most current version.

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15, Rev J or most current version

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2.3.3.2 Quality Metrics

The items in Section 2.3.3 shall meet the requirements specified by their respective drawings and the documentation required.

2.4 Force Transducer Instrumentation Services

The Contractor shall install strain gages, as required, on single- and multi-component force transducers. Strain-gage application shall be performed using Government Furnished Equipment

(GFE), Government Installation Provided Equipment (GIPE), or equivalent. Strain gages will include, but are not limited to, all commercially available strain gages and strain sensors and include foil-type, semi-conductor, flame-sprayed, and fiber optic sensor types. The Contractor shall attach all ancillary materials that are an integral part of the instrumented transducer including compatible lead wires, sleeving, and connectors; provide Wheatstone bridge circuit adjustments

(temperature compensation, compensation bridge balance adjustments, span corrections) and moisture proofing of strain gage installations; install and repair thermal conditioning devices such as cooling tubes, shields, and jackets, miniature bellows, and heater strips; provide special clamps for mounting strain gages; support testing of new strain gages and special connectors including those purchased by the Government to ensure compliance with procurement specifications. In addition, final temperature compensation tests shall require digitally-recorded temperature and strain-gage outputs unless otherwise noted in a respective work requirement. Most strain-gage installations operate in a normal, ambient environment; however, test environments may range from cryogenic operations (approximately -250 deg. F.) to 400 deg. F. Performance of services under this contract shall conform to the standards provided by NASA publications NASA/TM-

110327 and NASA/TM-2004-213017.

Reference:

(Reference #9) Moore, Sr., T.C., Suggested Procedures for Installing Strain Gages on

Langley Research Center Wind Tunnel Custom Force Measuring Transducers, Metallic and

Composite Structural Test Articles, NASA/TM-2004-213017, June 2004.

(Reference #10) Moore, Sr., T.C., Recommended Strain-Gage Application Procedures for

Various Langley Research Center Balances and Test Articles, NASA/TM-110327, March

1997.

2.4.1 Quality Metrics

The items in Section 2.4 of this SOW shall meet the requirements specified by their respective drawings. In addition, tasks such as temperature compensation, zero unbalance, temperature cycling, strain-gage card recordings called out on drawings and in procedures shall be documented with data and signature sheets.

2.5 Material and Structures Strain Instrumentation Services

The Contractor shall install strain gages, as required, on materials and structures test articles.

Strain-gage application shall be performed using Government Furnished Equipment (GFE), Government Installation Provided Equipment (GIPE), or equivalent. Strain gages will include, STATEMENT OF WORK 80LARC18R002 but are not limited to, all commercially available strain gages and strain sensors and include foil-type, semi-conductor, flame-sprayed, and fiber optic sensor types. The Contractor shall attach all ancillary materials that are an integral part of the instrumented transducer including compatible lead wires, sleeving, and connectors; provide Wheatstone bridge circuit adjustments (temperature compensation, compensation bridge balance adjustments, span corrections) and moisture proofing of strain gage installations; install and repair thermal conditioning devices such as cooling tubes, shields, and jackets, miniature bellows, and heater strips; provide special clamps for mounting strain gages; support testing of new strain gages and special connectors including those purchased by the Government to ensure compliance with procurement specifications. In addition, final temperature compensation tests shall require digitally-recorded temperature and strain-gage outputs unless otherwise noted in a respective work requirement. Most strain-gage installations operate in a normal, ambient environment; however, test environments may range from cryogenic operations (approximately -250 deg. F.) to high-temperature operations (approximately 2000 deg.

F.). Performance of services under this contract shall conform to the standards provided by NASA publications NASA/TM-110327 and NASA/TM-2004-213017.

Reference:

(Reference #9) Moore, Sr., T.C., Suggested Procedures for Installing Strain Gages on

Langley Research Center Wind Tunnel Custom Force Measuring Transducers, Metallic and

Composite Structural Test Articles, NASA/TM-2004-213017, June 2004.

(Reference #10) Moore, Sr., T.C., Recommended Strain-Gage Application Procedures for

Various Langley Research Center Balances and Test Articles, NASA/TM-110327, March

1997.

2.5.1 Quality Metrics

The items in Section 2.4 of this SOW shall meet the requirements specified by their respective drawings. For tasks performed without a drawing provided in advance, a drawing or sketch shall be produced. In addition, tasks such as temperature compensation, zero unbalance, temperature cycling, strain-gage card recordings called out on drawings and in procedures shall be documented with data and signature sheets.

2.6 Single- and Multi-Axis Force Transducer Calibration Services

The Contractor shall calibrate single- and multi-axis strain-gage-type force transducers and force measurement systems in the LaRC Force Measurement Calibration Laboratory in Building 1237B or at the Contractor’s offsite facility as determined by the COR. The Contractor shall utilize static calibration stands, semi-automatic, Single-Vector System (SVS) calibration machines that may be provided by the Government or by the Contractor. Calibrations may include both nominal and off-nominal (e.g. elevated temperature, cryogenic temperature) conditions. Pertinent combinations of loads to determine first, second or higher order interactions on each component will be applied by standard load schedules used by the Contractor, or a load schedule provided to the Contractor by the Government. Requirements shall include the proper fitting of balance fixtures and hardware and evaluation of calibration data such as tabulating, plotting, and iteration of loadings necessary to assure that the required accuracy is achieved. The Contractor shall adhere

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to LaRC-approved calibration techniques at all times during calibration procedures. LaRC

Balance Engineers will review all intermittent and final calibration data deliverables for all balance calibrations, and the COR will provide guidance to the Contractor on any deviations that are observed during the calibration. The Contractor shall document all processes. Contractor calibration techniques that offer improvement may be submitted at any time for review by the

LaRC Balance Engineer. It is expected that a high degree of interaction shall be required between the Government and the Contractor.

A typical example of an approved LaRC calibration procedure for a six-component strain-gage balance would include the following tasks.

1. Balance operational readiness checkout of the balance to document condition of the balance and includes, but is not limited to, the following tasks: electrical inspection, visual inspection, electrical zero measurements, thermal strain measurements, and documentation of results.

2. Install balance into calibration fixture and ensure good contact on balance interfaces (i.e.

front end, taper). Fabricate dowel pins and keys as necessary.

3. Install assembly into a calibration stand.

4. Complete pre-calibration documentation (i.e. calibration cover sheet, calibration load sheets). Perform and record resistance checks, record electrical zeros; perform a data acquisition checkout.

5. Connect balance wiring into the data acquisition system.

6. Obtain and assemble the required calibration hardware such as weights, knife-edges, hangers, and weight pans (or baskets). Appropriate hardware (e.g. calibration arms) are documented in the master calibration hardware database, available in the bidder’s library.

7. Perform the calibration loadings according to the pre-determined load schedule. Loadings are performed with dead weights on hangers or baskets that are transferred to the calibration fixture through a double knife-edge arrangement. When loadings are required to be applied perpendicular to gravity, dead weights are applied over a bell crank mechanism and transferred to the balance as described previously.

8. Record the data with the data acquisition system through use of configuration-managed software code.

9. Analyze data using configuration-managed software code. Review the results and determine if the required accuracy has been achieved. If not, troubleshoot data to determine the next step(s).

10. When the desired accuracy has been achieved, provide electronic data files for final review by LaRC balance engineer. Finalize calibration and produce required wind-tunnel calibration files (e.g. i-deck, j8-deck, calibration summary).

11. Disassemble the calibration set-up, perform final inspections, and record electrical checks.

Deliver balance to the pre-determined location at NASA.

The finalized calibration files shall include standard LaRC i-deck, j-deck, j8-deck, and 8-page calibration summary unless specified otherwise in the task order. The calibration summary report shall contain information including, but not limited to, full-scale applied loads from calibration, full-scale bridge outputs, bridge sensitivities, values and magnitudes of computed interactions, computed 2-sigma accuracy values for each measurement component, natural zeros collected during calibration, notes identifying any pertinent calibration information, calibration dates.

STATEMENT OF WORK 80LARC18R002

Reference:

(Reference #6) LaRC-Approved Calibration Forms

(Reference #7) NASA Langley Research Center Calibration and Evaluation of Multi-

Component Strain-Gage Balances, March 1964.

(Reference #11) Parker, P.A. and DeLoach, R., Response Surface Methods for Force Balance

Calibration Modeling, IEEE 19th International Congress on Instrumentation in Aerospace

Simulation Facilities, Cleveland, Ohio, August 2001

(Reference #12) Parker, P.A. and Liu, T., Uncertainty Analysis of the Single-Vector Force

Balance Calibration System, AIAA 2002-2792, 22nd Aerodynamic Measurement Technology and Ground Testing Conference, St. Louis Missouri, June 2002.

(Reference #13) Parker, P.A., Morton, M., Draper, N., and Line, W., A Single-Vector Force

Calibration Method Featuring the Modern Design of Experiments (invited), AIAA 2001-0170, 38th Aerospace Sciences Meeting and Exhibit, Reno, Nevada, January 2001.

2.6.1 Off-Site Laboratory Calibration Standards

In order to maintain maximum reliability and integrity in NASA’s research testing operations, the

Contractor shall maintain traceability to the National Institute of Standards and Technology

(NIST) for all off-center laboratory calibration standards including, but not limited to, the following: load cells, torque wrenches, scales, analytical balances, force transducer calibration weights, and data acquisition components. The Government will provide a schedule of calibration for all laboratory calibration standards. Documentation shall be maintained by the Contractor and provided to the Government in electronic and hardcopy format.

Reference:

(Reference #5) Langley Research Metrology Program, NPD 8730.1 Rev C or most current version.

2.6.2 Quality Metrics

All calibration data, for previous calibrated force transducers, shall be within 0.05% (2-sigma) uncertainty for each component analyzed for the entire calibration load schedule. In addition, sensitivities and interactions must be within 0.02% and 0.10%, respectively. For new force transducers or existing transducers with new instrumentation, the uncertainty shall be within

0.25% (2-sigma) of full-scale output. Documentation of the calibration data, results, and files are provided by the software and shall be produced for each calibration with signatures for each person involved in the effort.

For laboratory calibration standards, calibration accuracies shall be within the manufacturer’s specifications. Data sheets shall be maintained to document the results and procedures followed

STATEMENT OF WORK 80LARC18R002

for the repairs, calibrations, and maintenance performed with a signature of the responsible person(s).

2.7 Force Transducer and Strain Instrumentation LaRC Facility Support and Troubleshooting

Services

The Contractor shall provide on-site force transducer and strain instrumentation support services.

Requirements shall include, but not be limited to, connecting interface wiring between force strain sensors and permanent wind-tunnel instrumentation, performing sensitivity verification checks, and troubleshooting of force transducers and test articles at the test site.

2.7.1 Quality Metrics

A summary report shall be written of the services performed or troubleshooting procedure utilized, findings, and resolutions.

3 Data Deliverables

DELIVERABLE

SOW

SECTION

NAMING CONVENTION FORMAT

DELIVERY

METHOD

1 Master Schedule 2.1 TaskOrder_MasterSchedule_Date.

pdf .pdf

Electronically to

COR

Monthly Task Order

Summary

2.1 MonthlySummaryReport_Date.pdf .pdf

Electronically to

COR

Engineering Design

Report

2.2 PartName_DesignReport_Date.pdf .pdf

Electronically to

COR and FMSS

Server

4 CAD Model 2.2 PartName_CADModel_Date.prt Pro/E or other

Electronically to

COR and FMSS

Server

5 FEA Model 2.2 PartName_FEAModel_Date.prt Pro/E or other

Electronically to

COR and FMSS

Server

6 Stress Report 2.2 PartName_StressReport_Date.pdf .pdf

Electronically to

COR and FMSS

Server

Engineering

Drawings 2.2

DrawingNumber_PartName_Draw ingDescription_Date.pdf .pdf

Electronically to

COR and FMSS

Server

Quality Assurance and Inspection Reports

2.3 PartName_InspectionReportType_

Date.pdf .pdf

Electronically to

COR and FMSS Server

STATEMENT OF WORK 80LARC18R002

Force Transducer

Operational

Readiness Report

2.4 PartName_OperationalReadinessR

eport_Date.pdf .pdf

Electronically to

COR

Temperature

Compensation and

Apparent Strain Run

Data

2.4, 2.5 PartName_DataType_Date.xls .xls Electronically to

COR

Force Transducer

Calibration Data

2.6 TransducerName_CalData_Date.txt .txt, .xls

Electronically to

COR and FMSS

Server

Finalized Force

Transducer

Calibration Files

2.6 Various

.txt, .xls, .pdf

Electronically to

COR and FMSS

Server

Force Transducer

Angular Deflections 2.6

TransducerName_Deflections_Dat e.txt

.txt, .xls, .pdf

Electronically to

COR and FMSS

Server

Photographs (as requested) All PhotoDescription_Date.jpeg

.jpeg or similar

Electronically to

COR and FMSS

Server

4 References

The Contractor shall adhere to the latest edition or supplements when utilizing the standards or codes set forth in this document.

(Reference #1) American Society for Nondestructive Testing (ASNT) for Qualification and

Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-189-2011 or most current version.

(Reference #2) Department of Defense Standard Practice for Engineering Drawings, MIL-

STD-100, Rev G or most current version

(Reference #3) Geometric Dimensioning and Tolerancing, ANSI Y14.5M, 2009 or most current version.

(Reference #4) Heat Treatment of Steel Parts, General Requirements, SAE, AMS2759E, April

2014 or most current version

(Reference #5) Langley Research Metrology Program, NPD 8730.1 Rev C or most current version

(Reference #6) LaRC-Approved Calibration Forms

STATEMENT OF WORK 80LARC18R002

(Reference #7) NASA Langley Research Center Calibration and Evaluation of Multi-

Component Strain-Gage Balances, March 1964

(Reference #8) NASA LaRC Wind-Tunnel Model Systems Criteria, LPR 1710.15 Rev J or most current version.

(Reference #9) Moore, Sr., T.C., Suggested Procedures for Installing Strain Gages on Langley

Research Center Wind Tunnel Custom Force Measuring Transducers, Metallic and

Composite Structural Test Articles, NASA/TM-2004-213017, June 2004.

(Reference #10) Moore, Sr., T.C., Recommended Strain-Gage Application Procedures for

Various Langley Research Center Balances and Test Articles, NASA/TM-110327, March

1997.

(Reference #11) Parker, P.A. and DeLoach, R., Response Surface Methods for Force Balance

Calibration Modeling, IEEE 19th International Congress on Instrumentation in Aerospace

Simulation Facilities, Cleveland, Ohio, August 2001

(Reference #12) Parker, P.A. and Liu, T., Uncertainty Analysis of the Single-Vector Force

Balance Calibration System, AIAA 2002-2792, 22nd Aerodynamic Measurement Technology and Ground Testing Conference, St. Louis Missouri, June 2002.

(Reference #13) Parker, P.A., Morton, M., Draper, N., and Line, W., A Single-Vector Force

Calibration Method Featuring the Modern Design of Experiments (invited), AIAA 2001-0170, 38th Aerospace Sciences Meeting and Exhibit, Reno, Nevada, January 2001.