寿命
压力(语言学)
变化(天文学)
跨度(工程)
计量经济学
数学
结构工程
法律工程学
工程类
医学
物理
老年学
语言学
天体物理学
哲学
出处
期刊:Transactions of the American Society of Mechanical Engineers
[ASM International]
日期:1952-07-01
卷期号:74 (5): 777-780
被引量:171
摘要
Abstract This paper presents a method of computing the factor of safety of a structural member with reference to a stated life, when operating under stress at high temperature when the temperature varies or when the stress varies moderately according to some definite pattern. The formulas presented herein are based on the supposition that the expenditure of each particular fraction of the life span at elevated temperature is independent of and without influence upon the expenditure of all other fractions of the life to rupture. The author makes no claim that this assumption is wholly true. The suggested procedure is offered simply to provide a means for making engineering estimates with some greater validity than always to assume that the worst conditions are present all the time. The desirability of taking account of certain additional influences which may differ from one material to another is recognized.
科研通智能强力驱动
Strongly Powered by AbleSci AI