Rubber substrate shear lap-joint testing fixture

Details Rubber substrate shear lap-joint testing fixture Rubber substrate shear lap-joint testing fixture

1997-06-27

1998-05-19

Dombroske, George M.

Measuring and testing

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

By loading of specimen

73845, 73827, G01N 324

Patent

active

057538239

ABSTRACT:
A back-to-back, single lap-joint test fixture and method provides for uniform shear strength determination in a lap-joint area at an adhesive bond plane between a low-modulus rubber-like elastic material substrate and a stiff panel both defining a single lap-joint specimen, two of which are disposed back-to-back with the rubber substrates being constrained from lateral deformation by respective aluminum housings each having a load-transferring lip pushing upon a substrate also being pulled by load transferring dowel pins pulling upon the rubber substrate while with a restraining clamp that restrains transverse movement of the housing and rubber substrate all so as to produce only shear-type failures based on the near-incompressible nature of the rubber materials in the two back-to-back single lap-joint specimens.

REFERENCES:
patent: 4346609 (1982-08-01), Gould et al.
patent: 4541286 (1985-09-01), Roper
patent: 4957004 (1990-09-01), McKinlay
patent: 5176028 (1993-01-01), Humphrey
patent: 5537884 (1996-07-01), Nishimura et al.
patent: 5705752 (1998-01-01), Chang et al.

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