Research Materials Engineer, AST, Mechanics of Materials and Structures

Date posted:
Monday, August 14, 2017
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
Hampton, VA

https://www.usajobs.gov/GetJob/ViewDetails/476594900

The Durability, Damage Tolerance and Reliability Branch, within the Research Directorate, is seeking an individual to serve as a Materials Engineer who will contribute to a fatigue and fracture team, performing research in all aspects of fatigue and fracture of structural composite materials including experimental and computational methods development, failure analysis, characterization of damage initiation and growth, modeling of a material’s characteristic features, determination of mechanisms of material nonlinearity, determination of environmental aging effects including moisture and thermal influences, development and implementation of constitutive relationships, and experimental validation of computational models and procedures.

This position may be filled at either grade level. If you are selected at the GS-12 level you may receive a one-time, non-competitive promotion to the full performance grade level when eligible and recommended by management. Identification of promotion potential in this position does not constitute a commitment or an obligation on the part of management to promote the employee. Promotion will depend upon administrative approval and the continuing need for an actual assignment and performance of higher level duties.

To receive consideration, you must submit a resume and answer NASA-specific questions. The NASA questions appear after you submit your resume and are transferred to the NASA web site. If you successfully apply, USAJOBS will show your application status as 'Received'. If your status is 'Application Status Not Available', you have not successfully applied. Do not rely on a USAJOBS email to confirm successful application. Only an email from NASA confirms a successful application.
Duties
The incumbent will serve as a member of a group that advances scientific knowledge and understanding of damage processes in structural composite materials. Conducts studies on the relationships between the structure of advanced aerospace materials and their durability and damage tolerance characteristics. Investigates the dependence of structural-scale damage growth on small-scale mechanisms, material properties, and defects. Performs research in all aspects of fatigue and fracture of composite materials including experimental and computational model development, failure analysis, modeling damage propagation, understanding of damage processes at the microstructural level, determination of environmental effects, and experimental validation of computational models and procedures. Experimental methods will include fatigue testing; methods of characterizing crack growth; near crack tip strain measurement and evaluation; use of digital image correlation; testing in highly controlled environments; and development of specialized techniques for validation of fatigue crack growth and fracture models. Analytical and computational methods will include progressive failure analysis; micromechanics analysis; and fatigue crack growth simulations.

Develops experimental and computational capabilities for study of damage in structural composite materials. Supports development of experimental and computational methods needed to predict fracture, failure and damage in advanced composite materials including laminated, stitched, and woven composites. Conducts experimental and/or computational investigations into fatigue and fracture response of materials and structures subjected to static, cyclic and impact loads under representative environments. Integrates experimental results with relevant computational results and findings. Develops methods to manipulate and visualize large data sets that result from experimental testing and/or analysis.

Conducts experiments, analysis and studies in support of NASA programs, including experiment and analysis of problems in durability and damage tolerance of composite materials of various architectures (woven fabric, tape, stitched, etc.). Work advances scientific knowledge in fatigue, fracture and aging of composite materials including supporting the development of innovative experimental and computational methods. Established or newly developed criteria are applied using advanced experimental and computational methods to interrogate failure of aerospace structures and structural components. Develops approaches to validate models for use in certification and damage tolerance for composite materials in aerospace applications. Develops, evaluates, selects, and analyzes application of advanced structural materials to aircraft/spacecraft structures. Supports failure, incident and accident investigations.

Supervisory Status
No

Promotion Potential
13

Job Requirements
Key Requirements
A one-year probationary period may be required.
Occasional travel may be required.
Qualifications
In order to qualify at the GS-12 level, applicants must meet one of the following in addition to the Basic Education Requirement:

a. One year of specialized experience in an appropriate field at least equivalent in difficulty and responsibility to GS-11 level work in the Federal service within or closely related to the aerospace technology specialty for which application is made; or
b. Any combination of experience and graduate study**; or
c. Completion of all requirements for a doctoral degree (Ph.D. or equivalent) in an appropriate field**.

Specialized experience includes: Experience in the evaluation of damage processes in composite materials; evaluation of fatigue and fracture processes; development of mechanical tests for evaluation of composite materials; computational modeling of damage; durability of structural materials; fracture mechanics of structural materials; evaluation of delamination in laminated composites.

In order to qualify at the GS-13 level, applicants must have one year of specialized experience equivalent to the GS-13 level, which has equipped the applicant with the particular competencies needed to successfully perform the duties of the position described above. There is no education substitution at this grade level.

Specialized experience includes: Experience in the evaluation of damage processes in composite materials; evaluation of fatigue and fracture processes; development of mechanical tests for evaluation of composite materials; computational modeling of damage; durability of structural materials; fracture mechanics of structural materials; evaluation of delamination in laminated composites; working with multidisciplinary teams to validate damage evolution models; developing or assessing progressive failure analysis tools.

BASIC EDUCATION REQUIREMENT:

A bachelor's degree from an accredited college or university with major study in Aeronautical Engineering, Aeronautics, Aerospace Engineering, Architecture, Astronautical Engineering, Astronautics, Astronomy, Astrophysics, Biomedical Engineering, Ceramic Engineering, Ceramics, Chemical Engineering, Chemistry, Civil Engineering, Computer Engineering, Computer Science*, Earth and Planetary Science, Electrical Engineering, Electronics Engineering, Geology, Geophysics, Industrial Engineering, Materials Engineering, Materials Science, Mathematics (Pure or Applied), Applied Mechanics, Engineering Mechanics, Mechanical Engineering, Metallurgical Engineering, Metallurgy, Meteorology, Nuclear Engineering, Nuclear Engineering Physics, Oceanography, Optical Engineering, Physics, Applied Physics, Engineering Physics, Space Science, Structural Engineering, Welding Engineering or other appropriate physical science or engineering field. Degrees in engineering technology are not considered to be qualifying for this position. *Note: Curriculum must include 30 semester hours of course work in a combination of mathematics, statistics and computer science. Of the 30 semester hours, 15 must be in any combination of statistics and mathematics which includes differential and integral calculus.
**Required college majors for applicants qualifying on the basis of undergraduate or graduate education only**:

Aeronautical Engineering, Aeronautics, Aerospace Engineering, Astronautical Engineering, Astronautics, Chemical Engineering, Chemistry, Materials Engineering, Materials Science, Applied Mechanics, Engineering Mechanics, Mechanical Engineering, Nuclear Engineering Physics, Physics, Applied Physics, Engineering Physics, Structural Engineering, Welding Engineering. Other majors will qualify if the major includes or is supplemented as follows: Ceramics or Ceramics Engineering (with 12 semester hours in refractory ceramics, cermets or protective coatings); Civil Engineering, Computer Science, or Geology (with 12 semester hours in strength of materials, structures, thermodynamics, and/or basic static and dynamics); Metallurgy or Metallurgical Engineering (with 12 semester hours in physical or adaptive metallurgy, high temperature metals and alloys, cermets); Mathematics or Nuclear Engineering (with nine semester hours in physics, structures, materials or other appropriate courses). Other appropriate physical science or engineering fields may qualify with appropriate supplemental courses.

U.S. citizenship is required.

Security Clearance