About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
Presentation Title |
G-14: Analysis of Fatigue Crack Evolution Using In-situ Testing |
Author(s) |
Susheel Dharmadhikari, Asok Ray, Amrita Basak |
On-Site Speaker (Planned) |
Amrita Basak |
Abstract Scope |
Fatigue damage is one of the most ubiquitous sources of structural degradation during both nominal and off-nominal operations in engineering components. While model-based computational methods for assessing structural damage evolution are available, difficulty in achieving the required accuracy due to inadequacy in capturing the dynamical behavior of fatigue damage at the grain level makes them difficult to solely rely on. The objective of the current work is to investigate the evolution of fatigue failure in aluminum parts having varying degree of surface roughness. An in-situ fatigue testing setup integrated with ultrasonic transducers and a confocal microscope allowed for the systematic study of fatigue crack evolution in the presence of different type of notches. The resulting data from experimentation, characterization, and analysis were integrated to gain unprecedented insights into the evolution of fatigue failure in aluminum parts. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |