G. Shemesh

TL;DR: In this paper, the macroscopic and microscopic characteristics as well as the proposed mechanisms of Type I (high-temperature) and Type II (low temperature) hot corrosion are reviewed.

TL;DR: In this article, the effect of varied thread manufacturing process type and sequence on the mechanical properties of AISI 4340 stud bolts, and a laboratory procedure for distinguishing between them was developed.

TL;DR: In this paper, the failure of five shear bolts in the main rotor drive plate of a helicopter during installation torque wrenching was analyzed and it was concluded that the bolts failed because of improper application of antiseize material, which led to development of overloads.

TL;DR: In this paper, it was concluded that the cause of failure was improper overhaul process, which left grinding burns and cracks beneath the chromium coating, and electrolyte that penetrated through these cracks promoted the formation of pits beneath the coating, which served as preferred sites for failure initiation.

TL;DR: In this article, the authors developed a sensitive analytical procedure based on secondary ion mass spectrometry (SIMS) that would allow in-service identification of local hydrogen accumulation, either during quality control or during failure analysis of electroplated items.