High strain rate elasto‐plasticity identification using the image‐based inertial impact (IBII) test part 1: Error quantification
Abstract
Current high strain rate testing procedures generally rely on the split Hopkinson bar (SHB). In order to gain accurate material data with this technique, it is necessary to assume the test sample is in a state of quasi‐static equilibrium so that inertial effects can be neglected. During the early portion of an SHB test, it is difficult to satisfy this assumption making it challenging to investigate the elastic–plastic transition for metals. With the development of ultra‐high speed imaging technology, the image‐based inertial impact (IBII) test has emerged as an alternative to the SHB. This technique uses full‐field measurements coupled with the virtual fields method to identify material properties without requiring the assumption of quasi‐static equilibrium.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 24, 2021
- Source ID
- 10.1111/str.12375
Entities
People
- Aleksander Marek
- Fabrice Pierron
- Frances Davis
- Lloyd Fletcher
- Sarah Dreuilhe
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- Engineering and Physical Sciences Research Council
- University of Southampton