Characterization and early detection of hydrogen embrrittlement in offshore bolts using acoustic emission

Abstract

In this project the non-destructive testing technique of acoustic emission testing will be used to determine the location of hydrogen embrittlement within offshore bolts. An initial testing plan has been provided which outlines that a fatigue test will be performed on the chosen bolt size and material. The obtained results will be used to link the fatigue data with the AE signals captured during testing and justify the choice of this NDT technique for detection of location of crack within the bolt. This will be later developed to detect cracks developed due to hydrogen embrittlement in high- strength steel bolts. To achieve this, a thorough literature review on hydrogen embrittlement and acoustic emission has been provided in this report along with the future plan for testing that will be used to gather experimental data which will justify this theory.