Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1978-02-06
1979-08-28
Ciarlante, Anthony V.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73830, G01N 332
Patent
active
041656342
ABSTRACT:
An improved apparatus and process are described for measuring linear and non-linear viscoelastic properties of viscoelastic materials such as nylon, polyester tire cord, rubber, rubber-tire cord composites and the like. The properties are determined by subjecting a sample material to a constant-rate strain displacement having a small amplitude high frequency sinusoidal strain displacement superimposed thereon, and analyzing the overall resulting material stress. The obtained properties can be used to predict and estimate actual end use characteristics of the material such as longevity and mechanical loss during performance. In the case of tire cord, this latter characteristic can be surprisingly related to efficiency of fuel consumption in automotive vehicles.
REFERENCES:
patent: 3969930 (1976-07-01), Prevorsek et al.
patent: 4056973 (1977-11-01), Prevorsek et al.
Kwon Young D.
Prevorsek Dusan C.
Sharma Raj K.
Allied Chemical Corporation
Ciarlante Anthony V.
Harman Robert A.
North Robert J.
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