Fully articulated four-point-bend loading fixture

Details Fully articulated four-point-bend loading fixture Fully articulated four-point-bend loading fixture

1989-12-28

1991-01-22

Raevis, Robert

Measuring and testing

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

By loading of specimen

G01N 320

Patent

active

049861328

ABSTRACT:
A fully articulated four-point-bend loading fixture for MOR and fracture toughness specimens utilizes an upper loading plate in combination with a lower loading plate. The lower plate has a pair of spring loaded ball bearings which seat in V-shaped grooves located in the upper plate. The ball bearings are carried in the arms of the lower plate. A load is applied to the specimen through steel rollers, one large roller and one smaller roller each located on both the upper and lower plates. The large rollers have needle roller bearings which enable a single loading roller to rotate relative to the plate to which it is attached.

REFERENCES:
patent: 2243842 (1941-06-01), Fearn
patent: 2732712 (1956-01-01), Reed
patent: 3170321 (1965-02-01), Sullivan et al.
patent: 3332281 (1967-07-01), Spangler
patent: 3937072 (1976-02-01), Huydts et al.
patent: 4677856 (1987-07-01), Fischer
patent: 4730498 (1988-03-01), Blanch
Tsvikenvich et al., "Device for Static Bending Testing of Samples at Different Temperature and Media", Ind. Lab (U.S.A.), vol. 43, No. 3 (Mar. 1977).

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