Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specimen clamp – holder – or support
Patent
1988-06-16
1989-04-18
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specimen clamp, holder, or support
73834, G01N 306
Patent
active
048215791
ABSTRACT:
In a test sample clamping apparatus for testing machines, having a clamping head or chuck and a force sensor (2) arranged on the chuck, testing forces are measured with a force sensor and displacements or test sample deformations are measured simultaneously with a light deflection. Thus, rapid test procedures such as fast tensile rupture tests are made possible. The clamping head or chuck includes a base plate (3), one side of which receives or holds clamping elements (15) and the other side of which clamps down the force sensor (2) against a support. A mirror surface (8, 8') is arranged on the base plate (3) or on other appropriate surfaces of the clamping head so as to reflect a ligth beam (10) emitted by a light source (9) onto a position detector (11). In order to measure a deformation caused displacement of the clamping head and correspondingly of the test sample (4), an electronic evaluating circuit (12) evaluates the position dependent output signal of the detector (11).
REFERENCES:
patent: 3102421 (1963-09-01), Cosner et al.
patent: 3592545 (1971-07-01), Paine
patent: 4605857 (1986-08-01), Ninomiya et al.
Journal of Scientific Instruments (Journal of Physics E) 1969 Series 2, vol. 2; pp. 375-377, Article Entitled: "The Application of a Light-Sensitive Potentiometer in the Measurement of the Mechanical Properties of Single Fibres".
Gernhart Peter
Hintz Gerhart
Keller Guenter
Pohl Andreas
Carl Schenck AG
Fasse W. G.
Kane, Jr. D. H.
Myracle Jerry W.
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