Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1988-08-22
1989-09-19
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73 375, G01N 310
Patent
active
048669911
ABSTRACT:
Apparatus and method for determining and comparing the stretchability of fabrics. The apparatus and method comprise a support tube upon which is mounted one or more annular, inflatable bladders. A stretchable fabric sample is pulled over the support and the deflated bladder and secured in place by a collar. Air is directed from a pressure source through the support tube to inflate the bladder at a fixed rate. Electronic sensors measure the air pressure required to inflate the bladder and expand the fabric as a function of time during inflation and this inflation data is applied to a computer. The computer plots the air pressure required to inflate the bladder as a function of time for both cases, where fabric is and is not in place. The deformation characteristic of one or more fabric samples can thereby be observed.
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