|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Fracture: 65 Years after the Weibull Distribution and the Williams Singularity
||Composite Overwrapped Pressure Vessel (COPV) Life Test
||Richard Russell, David Dawicke, Jacob Hochhalter
|On-Site Speaker (Planned)
Recent attention has been focused on how NASA and its commercial partners have been placing less emphasis on testing and have become more dependent on analytical methods when evaluating design margins for fracture-critical components. Of high concern is the possible misuse of such analytic models for thin-walled metallic liners for composite overwrapped pressure vessels (COPVs).
The intent of this assessment is to develop test data to understand the limitations of the linear-elastic fracture mechanics (LEFM) computational methods used to predict fatigue crack growth rate behavior of small detectable cracks in thin metal liners for COPVs. The ultimate goal is to develop and demonstrate a test-based methodology validating the safe-life requirements for COPVs with thin, elastically responding metal liners where LEFM methods are not appropriate.
||Planned: Supplemental Proceedings volume