Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1975-03-04
1977-04-26
Goldstein, Herbert
Measuring and testing
Gas content of a liquid or a solid
By vibration
73 955, G01N 318
Patent
active
040193659
ABSTRACT:
A thermomechanical analyzer is adapted to measure stress or strain in a sample material by the use of a flat, passive spring, having a known modulus of elasticity, in conjunction with an axially displaceable shaft which mechanically links the spring and the sample together. The linkage is such that the sample under test and the spring are mechanically connected in parallel, i.e., each undergo equal displacement. A transducer senses axial displacement of the shaft such that the magnitude of the shaft displacement is related to the stress in the sample. The sample may be subjected to temperature variations during the test cycle.
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patent: 2588630 (1952-03-01), Jackman
patent: 2685195 (1954-08-01), Streblow
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patent: 2922302 (1960-01-01), Kernam
patent: 3075378 (1963-01-01), Bernard et al
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patent: 3614834 (1971-10-01), Holt et al.
patent: 3813919 (1974-06-01), Taniguchi et al.
Bernstein et al. "Stress Relaxation with Finite Strain", in Trans. Soc. of Rheology, vol. 7, 1963, pp. 400 & 401.
E. I. Du Pont de Nemours and Company
Goldstein Herbert
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