|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Fracture: 65 Years after the Weibull Distribution and the Williams Singularity
||Re-tooling the Engineering Predictive Practices for Durability and Damage Tolerance
||Robert Piascik, Norman Knight
|On-Site Speaker (Planned)
With less emphasis on testing and increased emphasis on computational durability and damage tolerance (D&DT) methods as the standard practice, it is paramount that capabilities of these methods are understood, the methods are used within their technical limits, and validation by well-designed tests confirms understanding. This presentation discusses growing vulnerabilities of existing D&DT methods in terms of three important local parameters:
1. Local length scales (structural and material) within the micromechanics regime.
2. Local environments that influence D&DT behavior.
3. Local material behavior (i.e., anisotropy, properties, damage mechanisms, etc.), that are not thoroughly considered.
The lack of understanding of any of the local parameters listed above have led to incomplete and erroneous estimates of D&DT performance. Discussions will include several vulnerable engineering practices related to estimating the D&DT of fracture-critical components and why D&DT method vulnerabilities will rapidly increase with new weight saving designs, advanced materials, and unique fabrication processes.
||Planned: Supplemental Proceedings volume