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:
Aug. 31, 1982
Filed:
Sep. 08, 1980
Applicant:
Inventors:
Albert J McLaughlin, Lancaster, PA (US);
Gary W Paddison, Dover, PA (US);
Assignee:
Armstrong World Industries, Lancaster, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73597 ;
Abstract
Apparatus for ultrasonically testing polymer materials includes means for measuring the thickness of the specimen and for measuring the mass density of the specimen in situ. Ultrasonic measurements of the specimen are obtained. Then the specimen holder is rotated past the critical angle and new ultrasonic measurements are obtained. From these ultrasonic measurements the storage and loss moduli and attenuation coefficients for the polymer specimen are obtained.