A New Approach to Finding a Risk-Informed Safety Factor for Fail-Safe Pressure Vessel and Piping Design
The purpose of this paper is to present a new approach to finding a risk-informed safety factor for the fail-safe design of a high-consequence engineering system.The new approach is based on the assumption of a 99.99 % confidence level and a 99.99 % coverage, and the application of the classical theory of tolerance limits, error propagation, and a method of statistical model parameter estimation known as the bootstrap method.To illustrate this new approach, we first apply the methodology to the UTS data of six materials ranging from glass, ceramics, to a high-strength steel at both 20 C and 600 C, and then to the fatigue life estimation of a BK-7 glass using two available additional sets of laboratory test data.Significance and limitations of our new approach to the fail-safe UTS design and fatigue life prediction of an aging PVP or aircraft are presented and discussed.
aging structures bootstrap method error propagation fail-safe design fatigue life model pressure vessel and piping safety factor tolerance limit theory ultimate tensile strength
Jeffrey T.Fong N.Alan Heckert James J.Filliben Pedro V.Marcal Stephen W.Freiman
U.S.National Institute of Standards and Technology,Gaithersburg,Maryland 20899,U.S.A. MPACT Corp.,Oak Park,California 91377,U.S.A. Freiman Consulting,Potomac,Maryland 20854,U.S.A.
国际会议
2014 International Symposium on Structural Integrity,ISSI2014(2014国际结构完整性学术会议)
兰州
英文
3-22
2014-08-20（万方平台首次上网日期，不代表论文的发表时间）