|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||A New Test Specimen to Determine Environmentally-Assisted Cracking Threshold
||James Sobotka, Carl F. Popelar, Fassett Hickey, Julian Hallai, Yifei Zeng
|On-Site Speaker (Planned)
This presentation describes the development of a new test specimen that supports the determination of environmentally-assisted cracking threshold. This novel specimen has been designed to provide near-constant stress-intensity factor values under a constant displacement imposed by wedge loading. Consequently, this test specimen does not require active monitoring over long periods in hazardous sour environments. This specimen allows the threshold stress-intensity factor to be more readily based on crack initiation. This approach eliminates ambiguities associated with measurements of the arrest toughness. This work focuses on applications for sulfide stress cracking in tough, strong steels used for oil and gas applications. In this work, we discuss our design methodology, constraints on the specimen, failed specimen geometries, and the final specimen that permits the rapid development of crack threshold databases.
||Energy Conversion and Storage, Iron and Steel, Modeling and Simulation