ENGINEERING CASE STUDY
Aerospace Polymer Mechanical Characterization
Characterizing fastener pull-through behavior in ULTEM 9085 through specimen preparation, mechanical testing, and analysis of load-displacement response.
Engineering challenge
Evaluate fastener pull-through behavior in additively manufactured ULTEM 9085 coupons across thickness, print orientation, hole preparation, and fastener variables.
Constraints
The characterization work considered multiple specimen and fastener variables. Exact geometries, test rates, fixture specifications, material conditioning, and program-specific requirements are not disclosed in this portfolio.
My contribution
I characterized more than 80 ULTEM 9085 fastener pull-through coupons, evaluated load-displacement response, and documented failure modes. My broader branch responsibilities included developing test plans, specimen-preparation methods, execution procedures, and data-reduction approaches for polymer and composite characterization.
Methods & tools
- Mechanical testing of ULTEM 9085 fastener pull-through coupons.
- Evaluation across thickness, print orientation, hole preparation, and fastener variables.
- Load-displacement analysis and documentation of failure modes.
- Test-plan development, specimen preparation, and test-data reduction within the broader materials role.
Verification
The existing portfolio and résumé identify load-displacement response and documented failure modes as the evaluation outputs. The count reflects coupons characterized, not distinct materials, production parts, or qualified components. Numerical strength results and statistical conclusions are not available for public presentation.
Engineering outcomes
More than 80 coupons were characterized. The verified outcome is the completed characterization activity and its documented responses and failure modes. No unprovided strength improvement, certification, or aircraft qualification is claimed.
Lessons & applications
The work demonstrates a practical connection between specimen variables, mechanical-test execution, and interpretable engineering records. These methods are relevant to materials characterization and design evaluation without implying a specific unreported conclusion.
Related skills
SOURCE & SCOPE
Based on the existing published portfolio and supplied résumé. This page is a public, high-level summary; it does not include raw test data, proprietary technical documents, or program-specific requirements.
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