Elastodynamic testing of elongate compressible material

Details Elastodynamic testing of elongate compressible material Elastodynamic testing of elongate compressible material

G - Physics

01

N

73/90

G01N 3/08 (2006.01) G01N 3/00 (2006.01)

Patent

CA 1290168

TITLE ELASTODYNAMIC TESTING OF ELONGATE COMPRESSIBLE MATERIAL INVENTORS RAYMOND METCALFE RONALD C. WENSEL ABSTRACT This invention provides non-destructive testing of elongate compressible materials, and particularly to determine the elastodynamic properties of a material, and/or to detect defects such as non- uniformities in resilience or hardness, subsurface as well as surface defects such as inclusions, voids, tears, and the like. The material to be tested is passed between two rollers to compress the material under predetermined operating conditions of substantially constant roller spacing or substantially constant com- pression load. Measurement of the load or the displacement for the selected operating condition of constant roller spacing or constant load, respectively, provides an indication of elastodynamic properties of the material. Variations in the measured load or displacement can be utilized to detect defects in the material. The invention has been found particularly suitable for the testing of material for seals, such as O-rings.

526052

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