G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 3/18 (2006.01)
Patent
CA 2693045
The present invention is intended to provide a method for assessing remaining lifespan of a bolt with higher precision than conventional methods, which can be applied to a bolt comprising a high alloy with fewer tissue changes caused by creep damage. The present invention provides a method for assessing the remaining lifespan of a bolt used at high temperatures, including: carrying out a creep test for a bolt material that constitutes a bolt to be assessed and determining a life-time and a life-elongation rate; determining a time-temperature parameter based on the life-time and the creep test temperature; creating a lifespan-assessment diagram by plotting the time-temperature parameter with respect to the life-elongation rate; measuring a elongation rate between before and after the use of the bolt to be assessed; and assessing the remaining lifespan of the bolt with the use of the elongation rate between before and after the use of the bolt to be assessed and the lifespan- assessment diagram.
Arai Masahiko
Chiba Hiroaki
Doi Hiroyuki
Haneishi Takashi
Kobayashi Shinichi
Hitachi Ltd.
Kirby Eades Gale Baker
LandOfFree
Method for assessing remaining lifespan of bolt used at high... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for assessing remaining lifespan of bolt used at high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for assessing remaining lifespan of bolt used at high... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1400707