G - Physics – 01 – M
Patent
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G01M 5/00 (2006.01) G01M 17/00 (2006.01) G01N 3/20 (2006.01)
Patent
CA 2033015
ABSTRACT OF THE DISCLOSURE A method of non-destructive inspection for resinous automotive bumper beams comprises applying flexural load to the center of a bumper beam by a pressing jig in a state that the both ends of the bumper beam have been pivotably sup- ported to gradually bend the bumper beam, measuring or determining the bending strain and energy absorption of the bumper beam upon the application of the flexural load, said energy absorption being calculated from said bending strain and flexural load, and judging the bumper beam to be good in quality only when the energy absorption of the bumper beam reaches at least a control value of the energy absorption, which is set up in advance, in a state that the bending strain of the bumper beam is at most a control value of the bending strain, which is set up in advance. The control value of the energy absorption is determined by correcting the value of energy absorption upon destruction of a bumper beam, which has been found in a standard destructive test. The control value of the bending strain is determined by cor- recting the bending strain in the standard destructive test. These corrections are performed on the basis of the correla- tions between a plurality of data as to the energy absorption and bending strain in the standard destructive test and a trial destructive test, respectively.
Masuda Hisashi
Sato Shoji
Ushiki Yoji
Honda Engineering Kabushiki Kaisha
Swabey Ogilvy Renault
LandOfFree
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