Year: 1985
Type: conference-paper
Abstract: Soils frequently exhibit one or more of the following characteristics which complicadte analysis of data from split Hopkinson bar tests or make test setup and execution difficult: low wave speed, high attenuation of acoustic energy, or insignificant structural strength. Low wave speed invalidates the assumption that the sample is deformed uniformly by the load at early times; but, use of a Lagrangian wave propagation analysis permits derivation of useful information from the standard suite of data. Use of gauges within the sample would facilitate this technique. High attenuation requires thin samples, which restricts the strain paths which can be achieved. The weakness of noncohesive soils presents difficulties in preparation, handling and control of boundary conditions. One simple solution is to support the sample in a rigid sleeve; this results in a uniaxial strain experiment so that the results are directly comparable to shock wave data. 10 references, 7 figures.
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W98054384