Attch_2_BAA_FA8650-19-S-5011_TO_0001_SOO.pdf

FA8650-19-S-5011

Attachment 2

Statement of Objectives

Task Order 0001

Metals Performance and Uncertainty Prediction

1.0 Scope: The scope of this task order is to perform on-site research and development at the Air Force Research Laboratory, Materials & Manufacturing Directorate, Structural Materials Division (AFRL/RXC) located at Wright-Patterson Air Force Base in the area of behavior and life prediction of metallic and metallic composite materials.

2.0 Objective: The objective of this task order is to conduct basic, applied, and advanced research on metallic and metallic composite materials to identify and develop validated models that can predict properties, performance, and materials-related uncertainty across multiple length scales. The developed models shall inform component, subsystem, and system level risk determinations that can be transitioned to AF and other DoD customers.

3.0 Description of Work: The contractor shall perform research and development related to the stated objective. Research activities may include, but are not limited to:

3.1 The contractor shall research and develop state-of-the-art characterization and testing capabilities to quantify the performance of metallic and metallic composite materials, including novel approaches to evaluate the fatigue, dwell-fatigue, thermo-mechanical fatigue, fracture, creep, stress rupture, crack initiation, and crack growth properties of metallic and metallic composite materials. Development of multi-scale (microscale, milliscale, and conventional) specimen testing under uniaxial and multi-axial loading conditions is anticipated. High impact research areas related to this topic include but are not limited to: (a) properties and performance under extreme environments, such as the thermo-mechanical conditions anticipated within turbine engines or during hypersonic flight, (b) destructive and nondestructive residual stress quantification in anisotropic materials through methods such as hole drilling, contour, and x-ray techniques, and (c) microstructurally sensitive crack initiation and crack growth processes spanning length scales.

3.2 The contractor shall research and develop material models capable of predicting properties and performance of metallic and metallic composite materials under service relevant temperature, environment, stress, and time (TEST) conditions, including multi-axial and mission loading conditions and at critical component life-limiting locations such as holes and other similar sites with steep stress gradients. Verification and validation of all models is required.

When applicable, developed models shall be sensitive to local variations in microstructure and be able to probabilistically predict location specific properties in components with uniform or gradient microstructures. The influence of surface treatments (e.g., coatings, shot peening, laser shock peening, low plasticity burnishing, heat treatments, etc.) on the performance of the material shall be incorporated in the models. Relevant research topics in this area include, but are not limited to: (a) tensile and creep models for polycrystalline materials, including prediction of yield stress, hardening, and cyclic behavior under a variety of environmental conditions, (b) three-dimensional finite element-based analysis of measured and simulated microstructures, (c) high fidelity constitutive model development and model validation methods, including high energy x-ray diffraction, (d) development and implementation of data analytics tools to develop reduced order engineering models leveraging materials databases, (e) probabilistic prediction of material performance, and (f) three-dimensional crack growth and advanced fracture mechanics models, including microstructure-scale (small) crack growth and continuum-scale crack growth.

3.3 Specific aerospace materials systems to be investigated include, but are not limited to aluminum, titanium, and nickel-based alloys, steel, high entropy alloys, advanced intermetallics, additively manufactured metals, functionally graded and joined materials, metal-with-non-metal hybrid structures, and fiber metal laminates. The investigations shall be conducted such that the understanding of the underlying physical mechanisms is developed into a model useful for design and/or analysis in the targeted materials.

3.4 Research related activities in the laboratory include fabrication of test samples, maintaining and modifying on-site laboratory equipment and computer software associated with research, and the acquisition of new Special Test Equipment (STE) or computer software to realize new capabilities.

3.5 The contractor shall perform incidental calibration and repair. Servo-hydraulic testing systems and laboratory equipment used for the research effort shall be maintained, scheduled for calibration, and repaired as necessary. The Base and Laboratory calibration and repair facilities (Precision Metrology Equipment Laboratory, PMEL) as well as the Equipment Maintenance Management Program shall be utilized to the greatest extent possible.

4.0 Program Management: Reviews will be an informal, ongoing activity due to the nature of the on-site research work. This can include reviews that will occur during the weekly Research Group (RG) meetings held between the government and contractor personnel. The contractor shall actively participate in both informal meetings and formal RG meetings. In addition, the contractor shall present the results of its R&D efforts at conferences and publish the results in appropriate peer-reviewed scientific journals.

5.0 Deliverables:

5.1 CDRLs: As listed below:

CDRL

NO.

Description

A001 Final Report A002 Funds and Man-Hour Report A003 Contract Funds Status Report A004 Presentation Material A005 Status Report A006 Software User Manual A007 Hardware Manual

A008 Project Planning Chart A009 Test Plan A010 Test Procedure A011 Raw Test Data A012 Reduced Test Data A013 Source Code A014 Material and Processing Digital Data Package

5.2 Computer Software. It is anticipated that the successful contractor will be required to provide computer software which includes, but is not limited to: subroutines used in commercial finite element codes, data reduction and visualization codes, deformation and life prediction models, and testing control codes.

5.3 Hardware. It is anticipated that the successful contractor will be required to provide hardware which includes, but is not limited to special test equipment (e.g., furnaces, test systems, displacement measurement systems, etc.).

5.4 Test Samples, Prototypes and Residual Materials. The contractor shall return to the Government all test samples, prototypes and residual materials not consumed in testing at the conclusion of the technical effort.

6.0 Operations Security (OPSEC) Requirements:

6.1 All contractors shall participate in all activities associated with the disciplines of the organization’s OPSEC program following appropriate measures required for this particular contract. This is required in an effort to reduce program vulnerability from successful adversary collection of possible sensitive unclassified and/or proprietary information, and violations of export control requirements. The prime contractor will ensure that all subcontractors, if applicable, conform to these requirements as required by the prime contractor. Guidance can be provided by AFRL/RX Security as needed.

6.2 Program Protection Plan (PPP): Any potential critical program information (CPI) generated as part of this effort will be reviewed to determine the need for a PPP, or to be included as part of an existing PPP.