Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Indicating coating or sheet providing direct visual indication
Patent
1995-12-18
1997-04-29
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Indicating coating or sheet providing direct visual indication
G01N 300
Patent
active
056251530
ABSTRACT:
A method of estimating non-destructively the life expectancy of ceramic members, at least a surface layer of which is made of ceramics, is disclosed. The method comprises measuring a variation in at least one of physical characteristics of said ceramic members including color, grain size, electroconductivity and Young's modulus and estimating the life expectancy of the ceramic members on the basis of the predetermined relationship between the life of said ceramics and the physical characteristics. The method is excellent in estimation of the life expectancy of ceramic members of gas turbines or nuclear fusion reactor since the life expectancy of the members to be inspected can easily be estimated in a short time without fracturing the members.
REFERENCES:
patent: 3779071 (1973-12-01), Thomas, Jr. et al.
patent: 4015465 (1977-04-01), Scott
patent: 4465900 (1984-08-01), Mitsumatsu et al.
patent: 4768383 (1988-09-01), Koyama et al.
Miyata Motoyuki
Sawai Yuichi
Tamaki Hideki
Wada Katsuo
Yasutomi Yoshiyuki
Hitachi , Ltd.
Raevis Robert
LandOfFree
Method of non-destructively estimating life of ceramic member 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 of non-destructively estimating life of ceramic member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of non-destructively estimating life of ceramic member will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-707852