Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1990-04-13
1991-02-26
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73150A, G01N 324
Patent
active
049952625
ABSTRACT:
A tile shear testing apparatus and method is disclosed with a unit having a frame comprising a reaction head and an end plate secured together by a plurality of alignment rods. A movable head is positioned between the end plate and reaction head and is slidable along the alignment rods upon actuation of an expansion unit utilizing fluid pressure. The reaction head and movable head are positioned between two pieces of tile to impart force thereon to determine force necessary to shear the tile-floor bond as measured by a precise digital pressure readout. A swivel jaw engages the tile face and provides pivotable movement to reduce eccentric forces to reduce bending in the frame. Furthermore, the expansion unit's ram piston is positioned low, lying in or near the plane between the tile to reduce eccentric forces tending to bend the frame. The frame is configured to provide ample rigidity.
REFERENCES:
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patent: 3566681 (1971-03-01), Iosipescu et al.
patent: 3911735 (1975-10-01), Di Crispino
patent: 4343190 (1982-08-01), Danko et al.
patent: 4346602 (1982-08-01), Gould et al.
patent: 4823611 (1989-04-01), Young
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