About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Richtmyer-Meshkov Instability Plate Impact Experiments on Three Body-centred Cubic Metals |
Author(s) |
Ben Adams, Glenn Whiteman, Ben Thorington-Jones, James Turner |
On-Site Speaker (Planned) |
Ben Adams |
Abstract Scope |
Richtmyer-Meshkov instability experiments are a sensitive means with which to infer the dynamic strength of materials in a high strain-rate, low pressure regime. Here we present an initial series of experiments examining the instability growth and spall behavior of three body-centred cubic metals; molybdenum, niobium and vanadium. Plate impact experiments on the three materials with machined free surface sine wave shaped perturbations of wavelength ~250 µm and amplitudes in the range 24–86 µm have been undertaken at impact stresses in the range ~9-20 GPa. Limiting values for impact stress and ripple amplitude at which an initial spike in the free surface velocity measurement is unclear have been determined. Some of the experimental challenges associated with this type of experiment will be highlighted. A series of hydrocode simulations, undertaken to develop material strength models by comparison to the experimental data, are discussed. UK Ministry of Defence ©Crown Owned Copyright 2021/AWE. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Other, |