US Patent 7487685 Strain measurement method and device
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Patent abstract
A non-contacting strain measurement method and system employs a laser light source for irradiating a test piece to provide a spectral pattern in spaced relationship from the test piece. The pattern is viewed while the test piece is placed under tension by a plurality of video cameras. The CCD video cameras are coupled to signal processing circuits which calculate the Poisson ratio according to the formula:
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US Patent 07487685 Strain measurement method and device US Patent 7487685 Strain measurement method and device
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Patent Number
0748768500
Patent Number
748768500
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Patent Jurisdiction
Patent Number
074876850
Date of Patent
February 10, 2009
0Patent Application Number
115139340
Date Filed
August 31, 2006
0Official Website
Patent Primary Examiner
Edits on 26 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
074876850
Date of Patent
February 10, 2009
0Patent Application Number
115139340
Date Filed
August 31, 2006
0Official Website
Patent Primary Examiner
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US Patent 07487685 Strain measurement method and device
Infobox
Is a
Patent jurisdiction
Patent number
07487685
Date of patent
February 10, 2009
Patent application number
11513934
Date Filed
August 31, 2006
Patent primary examiner
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