ASTM International - ASTM E739-23
Standard Guide for Statistical Analysis of Linear or Linearized Stress-Life ( S-N ) and Strain-Life (e- N ) Fatigue Data
| Organization: | ASTM International |
| Publication Date: | 1 February 2023 |
| Status: | active |
| Page Count: | 7 |
| ICS Code (Mechanical testing): | 19.060 |
significance And Use:
4.1 Materials scientists and engineers are making increased use of statistical analyses in interpreting S-N and e-N fatigue data. Statistical analysis applies when the given data... View More
scope:
1.1 This guide covers only S-N and e-N relationships that may be reasonably approximated by a straight line (on appropriate coordinates) for a specific interval of stress or strain. It presents elementary procedures that presently reflect good practice in modeling and analysis. However, because the actual S-N or e-N relationship is approximated by a straight line only within a specific interval of stress or strain, and because the actual fatigue life distribution is unknown, it is not recommended that (a) the S-N or e-N curve be extrapolated outside the interval of testing, or (b) the fatigue life at a specific stress or strain amplitude be estimated below approximately the fifth percentile (P ? 0.05). As alternative fatigue models and statistical analyses are continually being developed, later revisions of this guide may subsequently present analyses that permit more complete interpretation of S-N and e-N data.
1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Document History
