Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1978-10-30
1981-06-23
Cohen, Irwin C.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
91 5, 91448, F15B 2100, G01N 310
Patent
active
042742900
ABSTRACT:
A rapid opening valve assembly utilized in high rate specimen test systems which require that an actuator load a specimen at rates in the range up to one thousand inches per second and with deflections up to three inches. The high rate valve utilizes a poppet or valve piston member that rapidly opens once it is triggered. The ports may be very large and as shown the valve body is used in connection with a closely coupled accumulator pressure source that is ported directly to the actuator to provide adequate flow capacity. The specimen is generally for testing of metals, plastics, and elastomers under tension or compression.
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patent: 3994158 (1976-11-01), Weinhold
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Cohen Irwin C.
MTS Systems Corporation
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