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:
Jun. 30, 2015
Filed:
May. 13, 2013
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Hiroshi Shimanuki, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A probability in which a stress amplitude σof an operating stress exceeds a stress amplitude σof a fatigue strength (a fatigue strength excess probability pof a virtual cell) at each virtual cell in which a region of a machine component is equally divided so that one inclusion is contained therein and having a virtual unit volume Vis derived on an assumption that a distribution function of an inclusion size √{square root over ( )}area follows a generalized Pareto distribution. Then a probability in which the stress amplitude σof the operating stress exceeds the stress amplitude σof the fatigue strength (a fatigue strength excess probability pof the machine component) in at least one virtual cell is derived from the fatigue strength excess probability p.