Method and means for biaxially testing material

Details Method and means for biaxially testing material Method and means for biaxially testing material

1978-08-11

1980-03-11

Ciarlante, Anthony V.

Measuring and testing

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

By loading of specimen

G01N 310

Patent

active

041921941

ABSTRACT:
A thin-wall tube specimen is biaxially tested for stress analysis by applying compressive axial stress and either internal surface pressure or external surface pressure to the specimen. Torsion is not required. The sample is positioned between platens which are assembled inside a pressure collet. Axial compressive stress is applied through the platens to the specimen, and hydraulic pressure is applied through the assembly to the internal and external cylindrical surfaces of the specimen. Rubber bladders may be employed when applying the surface pressures.

REFERENCES:
patent: 3975950 (1976-08-01), Erdei
R. E. Ely, "Biaxial Fracture Stresses for Filled-Epoxy Tubes", Experimental Mechanics, pp. 492-496, (Dec. 1974).
Handbook of Experimental Stress Analysis, edited by Hetenyi, p. 40, (1950).
Sharma et al., "Experimental Investigation on Fracture of Visco-Elastic Materials Under Biaxial-Stress Fields", Experimental Mechanics, pp. 202-209, (May 1968).

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