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Repair strategies for aircraft antenna grounding structure

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www.dtbtest.com/PDFs/fin-cap-antenna-corrosion-repair.pdf

Description : Repair strategies for aircraft antenna grounding structure
Problem : Aircraft antenna grounding structure showed external corrosion
Analysis : Incorrect alloy selection caused exfoliation corrosion damage.
Externally visible corrosion was accompanied by deep damage, precluding practical repairs.
Resolution & Recommendations :
Change alloy from 2024 to 6061 to prevent exfoliation corrosion damage
Fiche analyse défaillance DAYTON T. BROWN METALLURGICAL LABORATORY

Failure in gas masks used by Air Force crews

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www.dtbtest.com/PDFs/air-crew-oxygen-breathing-mask-failure.pdf

Description : Failure in gas masks used by Air Force crews
Problem : Inlet valve/silicone interface disbanded during service
Analysis : Chemical bonding had not degraded. Analytical modeling showed that high stresses were generated during mask removal by leveraging the inlet valve
Resolution & Recommendations :
Modification of interface geometry from one-step to two-step configuration reduced the maximum stress by 45%

Fiche analyse défaillance DAYTON T. BROWN METALLURGICAL LABORATORY