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:
Jan. 25, 1977
Filed:
Aug. 18, 1975
Sotirios John Vahaviolos, East Windsor Township, Mercer County, NJ (US);
Western Electric Company, Inc., New York, NY (US);
Abstract
The strength of an adhesion bond can be determined using stress-wave emission techniques. One method measures the stress-wave emitted from the bonding area during the compression phase of the formation of the bond and compares this measurement with a predetermined substantially linear relationship between the emitted stress-wave energy and the strength of the adhesion bond. For more accuracy, a second method measures the stress-wave energy during both the compression phase and a pressure-relief interval, determines the difference between the two measurements, and compares the difference value with the substantially linear relationship. An alternative to the second method subtracts a predetermined threshold value from the pressure-relief interval measurement, reduces the compression phase measurement by the excess determined by said subtraction step, and compares the reduced compression phase measurement with the predetermined substantially linear relationship to determine the strengh of the bond.