G - Physics – 01 – L
Patent
G - Physics
01
L
349/35
G01L 5/24 (2006.01) F16B 31/02 (2006.01)
Patent
CA 1241734
Abstract of the Disclosure The method for measuring strains in a part uses the reflection of an acoustic wave, while measuring a transit time of said wave by means of an apparatus which measures the fade-in time of an echo coming from an interface. The method comprises the steps of selecting within the medium one or a plurality of ends of rectilinear measuring runs, which ends are embodied by an inner artificial reflector, emitting of a beam of acoustic waves so that acoustic rays carrying sufficient energy strike the useful reflectors, selecting the echoes corresponding to the reflectors, determining by measurement the transit time which are characteristic of the useful acoustic rays up to the inner artificial reflectors and transposing the transit times for each inner reflector considered individually or the respective differences of transit times for each couple of reflectors into an outer strain value or into a strain value within the region delimited by each couple of reflectors. The part of implementing such method comprises reflectors consisting particularly of perforations or bores into the part.
490228
de Halleux Benoit
Gowling Lafleur Henderson Llp
LandOfFree
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