Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specimen clamp – holder – or support
Patent
1988-07-15
1989-07-25
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specimen clamp, holder, or support
73818, G01N 304
Patent
active
048502316
ABSTRACT:
A stabilization and gripping device for use with a compression test machine to measure strain vs load characteristics of, in particular composite material uni-directional ply specimens, includes a guide sleeve, two hollow open ended end-blocks adapted to slidably fit within the guide sleeve and to co-operate with parts of the machine for applying compressive forces to the specimen, and two pairs of collets each pair for gripping a separate one of two ends of the specimen, the collets having a planar gripping inner surface, at least one outer surface tapered with respect to the gripping surface and corresponding to a tapered inner surface of the end blocks, and a planar outer surface for co-operation with a substantially planar inner surface of the end blocks so that the collets may be non-rotatably inserted in the end blocks in a position in which the respective inner surfaces are parallel and pairs of the inner surfaces define a location for the specimen ends.
REFERENCES:
patent: 2447660 (1948-08-01), Miklowitz
patent: 3757568 (1973-09-01), Fletcher et al.
Murdock Anthony
Ralfs Colin A.
British Aerospace Public Limited Company
Myracle Jerry W.
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