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Title: Method for resonant measurement

A method of measurement of objects to determine object flaws, Poisson`s ratio ({sigma}) and shear modulus ({mu}) is shown and described. First, the frequency for expected degenerate responses is determined for one or more input frequencies and then splitting of degenerate resonant modes are observed to identify the presence of flaws in the object. Poisson`s ratio and the shear modulus can be determined by identification of resonances dependent only on the shear modulus, and then using that shear modulus to find Poisson`s ratio using other modes dependent on both the shear modulus and Poisson`s ratio. 1 fig.
Inventors:
; ;
Issue Date:
OSTI Identifier:
203892
Assignee:
PTO; SCA: 420500; 360000; PA: EDB-96:060615; SN: 96001559474
Patent Number(s):
US 5,495,763/A/
Application Number:
PAN: 8-075,159
Contract Number:
W-7405-ENG-36
Resource Relation:
Other Information: PBD: 5 Mar 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 36 MATERIALS SCIENCE; MATERIALS; DEFECTS; MECHANICAL PROPERTIES; MATERIALS TESTING; MEASURING METHODS; DETECTION; SHEAR PROPERTIES; POISSON RATIO

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