Experimental method for measuring the tensile strain-rate dependence of spallation strength

Two experimental platforms were developed to obtain measurements of the tensile strain-rate dependence of the spallation strength in metals. The first experimental platform utilizes a target containing five samples of varying thicknesses impacted by five unique impactors. This configuration keeps th...

Full description

Saved in:
Bibliographic Details
Main Authors: Specht, Paul E., Alexander, C. Scott, Reinhart, William
Format: Conference Proceeding
Language:English
Subjects:
Compressive properties
Configurations
Impactors
Measurement methods
Pulse duration
Rarefaction
Spallation
Strain rate
Tensile strain
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two experimental platforms were developed to obtain measurements of the tensile strain-rate dependence of the spallation strength in metals. The first experimental platform utilizes a target containing five samples of varying thicknesses impacted by five unique impactors. This configuration keeps the peak compressive stress constant, while using the spreading of the rarefaction waves to varying the tensile strain-rate. The second experimental platform employs a wedge-shaped impactor to continuously vary the tensile strain-rate along a line on the sample. Hydrocode simulations are used to illustrate the change in tensile strain-rate, tensile pulse duration, and tensile pulse rise time as the configuration of each experimental platform changes.
ISSN:0094-243X
1551-7616
DOI:10.1063/12.0020429