Elastodynamic testing of elongate compressible material

Details Elastodynamic testing of elongate compressible material Elastodynamic testing of elongate compressible material

1988-06-27

1989-07-18

Levy, Stewart J.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

G01N 308

Patent

active

048481629

ABSTRACT:
This invention provides non-destructive testing of elongate compressible materials, and particularly to determine the elastodynamic properties of a material, and/or to detect defects such as non-uniformities in resilience or hardness, subsurface as well as surface defects such as inclusions, voids, tears, and the like. The material to be tested is passed between two rollers of substantially contant roller spacing. Measurement of the load provides an indication of elastodynamic properties of the material. Variations in the measured load can be utilized to detect defects in the material. The invention has been found particularly suitable for the testing of material for seals, such as O-rings.

REFERENCES:
patent: 2342374 (1944-02-01), Shayne et al.
patent: 2482147 (1949-09-01), Bashore
patent: 3791204 (1974-02-01), List et al.
patent: 3796094 (1974-03-01), Cook et al.
patent: 3803908 (1974-04-01), Endo et al.
patent: 4077254 (1978-03-01), Merler et al.

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