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Abstract

In 1975, a manufacturer was awarded a contract to produce modular air-traffic control towers for the U.S. Navy. The specifications called for painted steel siding, but the manufacturer convinced the Navy to substitute aluminum-bonded-to-plywood panels that were provided by a supplier. In less than one year, the panels began to delaminate and the aluminum began to crack. It was found that the failure was the result of chloride-induced intergranular corrosion caused by chemicals in the adhesive and excessive moisture in the wood introduced during manufacturing.

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Wilson G. Dobson, Neil J. Dilloff, Harold B. Gatslick, Forensic Engineering: A Case Study, ASM Failure Analysis Case Histories: Buildings, Bridges, and Infrastructure, ASM International, 2019, https://doi.org/10.31399/asm.fach.bldgs.c9001548

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