Method and apparatus for measuring thermodynamic response

Details Method and apparatus for measuring thermodynamic response Method and apparatus for measuring thermodynamic response

1984-01-30

1986-02-25

Ciarlante, Anthony V.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

73805, 73826, G01N 300

Patent

active

045720010

ABSTRACT:
A method and apparatus for precisely controlling plastic strain rate during plastic deformation testing of a solid material such as a metal or plastic are described in which the effects of elastic strain rates associated with the specimens and machines used for such testing are eliminated by applying corrections proportional to the load on the specimen. Thus strain rate sensitivity, unaffected by the machine or specimen modulus can be measured. Strain rate sensitivity can be used to measure the activation volume of the specimen which may be used for quality control of material processing and/or manufactured articles.

REFERENCES:
patent: 3411345 (1968-11-01), Wintriss
patent: 4012953 (1977-03-01), Ormond
patent: 4030347 (1977-06-01), Norris et al.
patent: 4432240 (1984-02-01), Adams

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