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. 31, 1995
Filed:
Jun. 25, 1993
Thomas P Diaz, San Martin, CA (US);
Peter L Andresen, Schenectady, NY (US);
William R Catlin, Schenectady, NY (US);
Gary W Contreras, San Jose, CA (US);
Ronald E De Lair, Schenectady, NY (US);
William D Miller, San Jose, CA (US);
Harvey D Solomon, Schenectady, NY (US);
Daniel Weinstein, San Jose, CA (US);
General Electric Company, San Jose, CA (US);
Abstract
An apparatus and a method for measuring and controlling the crack growth rate within a double cantilever beam type test specimen. The arms of the test specimen are fitted with a pressure-actuated bellows to induce a predetermined load and with a sensing assembly to provide feedback on the amount of beam displacement resulting from application of that load. In this manner a loaded test specimen may be remotely mounted and adjusted inside the reactor pressure vessel or piping of a nuclear reactor in order to maintain a stress intensity which is constant or which varies in a predetermined manner for inducing stress corrosion cracking or corrosion fatigue in the specimen.