2021/02/22 by Lloyd Fletcher, Frances Davis, Sarah Dreuilhe +2 · 7 citations
paper · doi:10.1111/str.12374
published in Strain 57(2) (Wiley)
crossref issued 2021/02/22 · crossref published 2021/02/22 · crossref published-online 2021/02/22 · crossref created 2021/02/22 · crossref published-print 2021/04/01 · crossref deposited 2023/10/21 · crossref indexed 2026/08/04
Abstract Current high strain rate testing techniques typically rely on the split‐Hopkinson bar (SHB). The early response in an SHB test is corrupted by inertia making it difficult to accurately characterise the transition from elasticity to plasticity for metals. Therefore, a new test method is required. This article is the second in a two‐part series which aims at developing a new high strain rate test for elasto‐plasticity identification using the image‐based inertial impact (IBII) method. The goal of this article is to validate the new method experimentally using IBII tests on aluminium 6082‐T6 (minimal rate sensitivity) and stainless steel 316L (rate sensitive). Comparison of the quasi‐static and dynamic stress–strain curves for the aluminium case showed minimal difference providing experimental validation of the method. The same comparison for the steel showed that the method was able to detect rate sensitivity.