The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2020
Filed:
Apr. 25, 2018
Applicant:
Southwest Research Institute, San Antonio, TX (US);
Inventors:
Adam C. Cobb, San Antonio, TX (US);
Albert J. Parvin, Jr., San Antonio, TX (US);
Barron J. Bichon, Helotes, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 31/12 (2006.01); G01N 29/42 (2006.01); G01N 29/12 (2006.01); G01N 29/11 (2006.01); G01N 29/07 (2006.01);
U.S. Cl.
CPC ...
G01N 29/07 (2013.01); B23K 31/125 (2013.01); G01N 29/11 (2013.01); G01N 29/12 (2013.01); G01N 29/42 (2013.01);
Abstract
Methods of testing the material of a metal object made by additive manufacturing. An electromagnetic acoustic transducer (EMAT) is used to transmit long duration acoustic signals into the object, and to receive response signals representing resonance of acoustic waves within the material. At least one resonance peak is identified and used to determine attenuation and/or wave velocity. These values can then be used to determine material properties, such as porosity, Shear Modulus, Young's Modulus, or Poisson's Ratio.