Vibration Tech Specs.pdf

Rev 0

Technical Specifications

Vibration System

DLA Land and Maritime Engineering & Technical Support Directorate

Product Test Center Division, Electronics Lab, VTP

I. The contractor shall complete vibration system to the Defense Supply Center Columbus

(DSCC), DLA Land and Maritime, Product Test Center Division, Electronics Lab, Columbus, Ohio.

A. Vibration Table, ETS Solutions M437A Shaker with specialty L-fixture, Brand Name or Equal with the following salient characteristics:

1. Shall be new, not refurbished.

2. Minimum 8800 lbs. peak (sine).

3. Minimum 8800 lbs. RMS (random).

4. Minimum 17600 lbs. peak instantaneous (shock).

5. Minimum 2 inch stroke continuous.

6. First major resonance shall be above 2250 Hz bare table.

7. Shall be air cooled.

8. An adequate cooling blower shall be supplied, and it shall be new, not refurbished.

9. Useable frequency range shall be at least DC to 2500 Hz.

10. Minimum of 70 inches per second peak velocity continuous duty sweep for sine and random testing.

11. Minimum of 90 inches per second peak velocity for shock transient testing.

12. Minimum table diameter, 13 inches, without an expander head.

13. Table head must have threaded inserts in pattern to allow use of current EPTC fixtures.

14. Shaker shall incorporate a pneumatic isolation system.

15. Shaker shall have an automated armature recentering system.

16. Armature shall be able to support 1000 pounds and automatically maintain center position

+/- 1/16 inch with any load from 0 to 1000 pounds.

17. Shaker support shall be trunnion mounted with air isolation.

18. Must include detachable head expander with guidance and load support or specialty L-fixture for testing M32271/1-22D (BA-5590B/U) batteries.

B. Amplifier, ETS Solutions IPA60L Amplifier, Brand Name or Equal with the following salient characteristics:

1. Shall be new, not refurbished.

2. Shall be air cooled.

3. Input power should be 480 VAC, 3 Phase, +/- 10%, 60 Hz.

4. Minimum rated output, 60 KVA.

5. Maximum harmonic distortion from DC to 2000 Hz, 1.5%.

6. Amplifier technology shall have a 90% or better efficiency rating.

7. Must have safety interlocks to prevent major system damage in event of overloads.

8. Shall have built-in diagnostics to determine operational status.

9. Amplifier shall be direct coupled to the shaker.

Vibration System

C. The Vibration Research VR9500 controller shall control the function of a MB Dynamics Model C-

40HP single-exciter/single-axis electrodynamic vibration system with a P18K amplifier and ETS Solutions M437A electrodynamic shaker with IPA60L Amplifier. The controller shall have the following salient characteristics:

1. Shall be new, not refurbished.

2. Accept simultaneous input from at least four internal electronic piezoelectric (IEPE) accelerometers without the use of external equipment. Accelerometer input shall be via

Bayonet Neill-Concelman (BNC) connectors.

3. Measure at least six independent direct current voltage inputs with at least 100 steps of graduation on each input. These voltage inputs may share the same physical connectors as the accelerometer inputs. The controller shall accept simultaneous input from at least four IEPE accelerometers and at least six voltage sources.

4. User-configurable to gracefully initiate or abort vibration when any voltage input exceeds user-defined voltage thresholds.

5. User-configurable to treat any accelerometer input as a control channel or as a measurement-only channel.

6. Warn the user before executing a test program that would exceed user-entered vibration system hardware limits including stroke, velocity, and acceleration. The hardware limits shall be independent of any test program.

7. When executing a test program, automatically save test data.

8. Supply via at least one BNC connector a drive signal that is compatible with the existing vibration system and amplifier.

9. Within the limits of the existing vibration system and amplifier, provide a continuous useable frequency range spanning at least 5 Hz to 3,000 Hz.

10. Within the limits of the existing vibration system and amplifier, control sinusoidal vibration in accordance with MIL-STD-202G Method 201A, MIL-STD-202G Method 204D, and MIL-STD-810G

Method 514.6.

11. When configuring the controller for sinusoidal vibration, allow the user to choose from at least the following three schemes: the average of the control channels, the least acceleration level of any control channel, and the greatest acceleration level of any control channel.

12. When configuring the controller for sinusoidal vibration, allow user input of peak acceleration, peak displacement, frequency, range, duration, alarm limits, and abort limits. Accept acceleration entered in gravitational units (i.e. g). Accept displacement entered in inches.

Accept the duration expressed as both a time and as a quantity of sweeps. Allow user input of alarm limits and abort limits as both absolute accelerations and as percentages of the target acceleration. Provide user-selectable linear and logarithmic ramping.

13. When controlling sinusoidal vibration, display the measurements from any combination of channels on a graph of acceleration versus frequency. This graph shall display the desired accelerations and any limits. Display the drive level and any combination of voltage inputs on a

Vibration System graph of voltage versus frequency while controlling sinusoidal vibration. Allow the addition and removal of channels to either graph without interrupting vibration. The graphs of acceleration versus frequency and of voltage versus frequency may be combined on a single graph.

14. When controlling sinusoidal vibration, numerically display the real-time measured acceleration, test frequency, and drive voltage.

15. Within the limits of the existing vibration system and amplifier, control random vibration in accordance with MIL-STD-202G Method 214A and MIL-STD-810G Method 514.6. Provide an anti-aliasing filter within the Fast Fourier Transform analyzer.

16. When configuring the controller for random vibration, allow the user to choose from at least the following four schemes: the average level of the control spectra, the control channel with the least overall root mean square acceleration, the control channel with the greatest overall root mean square acceleration, and the extremes of each line of resolution on all control spectra.

17. When configuring the controller for random vibration, allow user input of power spectral density (PSD), total bandwidth, lines of resolution, degrees of freedom, duration, alarm limits, abort limits, and sigma clipping. Accept user input of the PSD via both direct entry and import of a text file. Accept PSD breakpoints entered both by amplitude in mean-square acceleration per frequency unit (i.e. g2/Hz) and by slope in decibels per octave. Report the root mean square acceleration of the target PSD. The options for lines of resolution must include at least

400, 800, and 1600. Allow user input of tolerances for alarm limits and abort limits as percentages and decibels of the PSD amplitude. Allow user input of the number of lines of resolution and the number of time frames required to trigger a limit condition.

18. When controlling random vibration, graphically display the measured PSD versus frequency.

This graph shall display the desired PSD and any limits. The controller shall be able to display measurement-only channel(s) on the same PSD graph as the control channel(s) and on separate PSD graphs. Allow the addition and removal of channels to any graph without interrupting vibration. Display an amplitude probability density graph of displacement versus root mean square acceleration and provide comparison to a Gaussian distribution.

19. When controlling random vibration, numerically display the measured real-time root mean square acceleration and the real-time root mean square drive voltage.

20. Within the limits of the existing vibration system and amplifier, control mechanical shock in accordance with MIL-STD-202G Method 213B, MIL-STD-750E Method 2016.2, and MIL-STD-

810G Method 516.6.

21. Control mechanical shock using the average of the control channels.

22. When configuring the controller to control mechanical shock, allow user selection of the pulse shape, peak acceleration, duration, alarm limits, and abort limits. Accept acceleration entered in gravitational units (i.e. g). Accept duration in milliseconds. Provided pulse shapes, peak

Vibration System accelerations, and durations shall include those listed in MIL-STD-202G Method 213B Table

213-1 and MIL-STD-810G Method 516.6 Figures 516.6-10 and 516.6-11 with the possibility of the deviations in paragraph 2.3.2.d. The provided alarm limits shall include those described in

MIL-STD-202G Method 213B paragraph 3, MIL-STD-750E Method 2016.2, and MIL-STD-810G

Method 516.6 Figures 516.6-10 and 516.6-11 with the possibility of the deviations in paragraph

2.3.2.d. When configuring the controller to control mechanical shock, allow user input of repetition, delay, and direction of the shock pulse(s).

23. When controlling mechanical shock, display both the measured pulse and faired pulse on both acceleration versus time and velocity versus time graphs. These graphs shall display the desired pulse and any limits. The controller shall be able to display both the control channels and the average of the control channels on these graphs.

24. When controlling mechanical shock, numerically display the measured peak acceleration, faired peak acceleration, measured velocity change, faired velocity change, measured duration, faired duration, and total displacement. The controller shall be capable of displaying each of these values in the units in which they are described in MIL-STD-202G, MIL-STD-750E, and MIL-STD-

810G. In the event of a pulse exceeding a limit, indicate the limit(s) exceeded.

D. The vibration controller shall also function as a data recorder (transient capture) for an Avco SM- 105-2 pneumatic mechanical shock system whose control is independent of the vibration controller. The controller shall have the following salient characteristics:

1. Accept simultaneous input from at least four IEPE accelerometers without the use of external equipment. Accelerometer input shall be via BNC connectors. These inputs may overlap with the inputs used for vibration testing.

2. Monitor mechanical shock in accordance with MIL-STD-202G Method 213B, MIL-STD-750E

Method 2016.2, and MIL-STD-810G Method 516.6.

3. Have a frequency response in accordance with MIL-STD-202G Method 213B paragraph 2.2.1.2.

4. Use a filter with an attenuation slope of at least 12 decibels per octave to produce the faired pulse.

5. User-configurable trigger to initiate recording of a shock event. The trigger shall be based on at least one accelerometer input.

6. Allow user selection of the pulse shape, peak acceleration, duration, and alarm limits. Accept acceleration entered in gravitational units (i.e. g). Accept duration in milliseconds. The options available to the user shall include those listed in MIL-STD-202G Method 213B Table 213-1 and

MIL-STD-810G Method 516.6 Figures 516.6-10 and 516.6-11. The provided alarm limits shall include those described in MIL-STD-202G Method 213B paragraph 3, MIL-STD-750E Method

2016.2, and MIL-STD-810G Method 516.6 Figures 516.6-10 and 516.6-11.

Vibration System

7. Display both the measured pulse and faired pulse on both acceleration versus time and velocity versus time graphs. These graphs shall display the desired pulse and the limits. The controller shall be able to display any combination of accelerometer inputs.

8. Numerically display the measured peak acceleration, faired peak acceleration, measured velocity change, faired velocity change, measured duration, faired duration, and total displacement. The controller shall be capable of displaying each of these values in the units in which they are described in MIL-STD-202G, MIL-STD-750E, and MIL-STD-810G. If a pulse exceeds any limit, indicate the limit(s) exceeded.

E. Other requirements

1. Quoted system shall visually indicate when each individual controller input has an active and functional connection to an accelerometer. The indication may include but shall not be limited to a change in color. The indication shall be visible whenever the controller is energized.

2. Quoted system shall allow the user to enter accelerometer serial numbers and sensitivities independent of any specific test program. When defining a test program, allow the user to select by serial number the accelerometer on each input.

3. Quoted system shall accept a user-defined free text label for each accelerometer or voltage input in each test program.

4. Quoted system shall allow user input of the increment of each axis of each graph independently. Allow user selection of the scale of each axis of each graph independently;

choices must include linear and logarithmic. Allow the user to modify the color of each plot on each graph. Display the numerical value of any user-selected data point on any graph. To any graph, allow the user to add and relocate annotations which contain user-modifiable text. The annotations shall be stored with the data and appear on both the graph and any reports containing that data. All text on graphs shall display in a user-selectable font and font size.

Allow the user to print any graph to a government-furnished printer.

5. Quoted system shall include a computer which can be used independently of the vibration and shock systems. A single-board computer shall not fulfill this requirement. The computer shall include a display, keyboard, and pointing device such as a mouse. Be able to store test data and reports on compact disc (CD), digital versatile disc (DVD), and Universal Serial Bus (USB) 2.0 storage device. Include any word processor and spreadsheet software needed for complete ability to produce, view, and edit reports. Provide the ability to fully restore system functionality after a mass storage device failure.

6. Quoted system shall allow the user to design and customize multipage test reports. Allow the user to create and use a report template including text and graphics such as the user's logo.

User shall choose the graph(s) included in any report; options shall include measured plots and calculated plots such as the PSD. Allow user input of the increment of each axis of each graph independently. Allow user selection of the scale of each axis of each graph independently;

Vibration System choices must include linear and logarithmic. Allow the user to modify the color of each plot on each graph. Display the numerical value of any user-selected date point on any graph. Display any annotations associated with a graph. All text on reports shall display in a user-selectable font and font size. Provide the ability to store reports in a format compliant with ISO 32000 also known as Portable Document Format (PDF).

7. Quoted system shall allow the user to export measured data values to a text file. User shall be able to select the inputs that are exported.

8. Quote shall include cost for initial NIST-traceable calibration documentation.

9. Quoted system shall be such that the end user can perform the calibration. Provide all equipment, materials, information, and procedures necessary to calibrate the system.

10. The initial warranty period shall include all parts, labor, and travel and be at least one year in duration.

11. Quoted system shall have been on the market in the USA for a minimum of two years.

12. Training shall be on-site for at least two but not more than four students. Must include the following demonstrations each performed by at least one student: sinusoidal vibration, random vibration, shock on a vibration system, shock on a shock system, report generation/modification, halting a test with a voltage input, and calibration. Training duration shall be not less than 16 hours. The contractor shall supply all training materials. All training costs shall be quoted as a separate line item.

13. After installation and prior to acceptance, the contractor shall demonstrate that the system is operational and meets the requirements in the performance work statement.

14. Shipping cost shall be quoted as a separate line item.

Other Requirements:

1. Extended warranty, service and calibration contract for all equipment must be offered.

2. ISO 17025 or NIST calibration certification and data must be included.

3. All software must include permanently licensed, and not be a subscription-based license including calibration verification features.

4. Clause 252.232-7006 Wide Area Workflow Payment Instructions for detailed instructions on how to submit invoices.

5. Quoted system shall have been on the market in the USA for a minimum of two years.

6. Training shall be on-site for at least two students. Must include the following demonstrations each performed by at least one student: sinusoidal vibration, random vibration, shock on a vibration system, transient capture, shock on a shock system, report generation/modification, halting a test with a voltage input, and calibration.

Vibration System

Training duration shall be not less than 16 hours. The contractor shall supply all training materials. All training costs shall be quoted as a separate line item

7. Contractor shall contact Larry Baas (614-692-9893, larry.baas@dla.mil) or Eric Kelly

(614-692-9862, eric.kelly@dla.mil) to schedule the delivery.

8. Payment of invoices will be accomplished by payment through the Defense Finance and Accounting Service. Invoices will be submitted to the Wide Area Workflow system in accordance with DFARS 252.232-7003 Electronic Submission of Payment

Requests and Receiving Reports and DFARS 252.232-7006 Wide Area Workflow

Payment Instructions within 10 workdays after the conclusion of work performed.

Invoices shall be submitted through Wide Area Workflow (WAWF), See DFARS

Clause 252.232-7006 Wide Area Workflow Payment Instructions for detailed instructions on how to submit invoices.

9. DODAAC: SL0700