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Standard Practice for Statistical Analysis of Linear or Linearized Stress-Life (S-N) and Strain-Life (e-N) Fatigue Data
Automaticky preložený názov:
Štandardná prax pre štatistickú analýzu lineárneho alebo Linearizovaných Stress - Life ( SN ) a deformácia - Life ( en ) údaje o únave
NORMA vydaná dňa 10.4.1998
Označenie normy: ASTM E739-91(1998)
Poznámka: NEPLATNÁ
Dátum vydania normy: 10.4.1998
Kód tovaru: NS-47845
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
Engineering applications, Fatigue, Linear/linearized stress-/strain-life, Models/modeling, Statistical methods, Strain testing-metallic materials, Stress-metallic materials, Stress-stress strain, statistical analysis of linear/linearized stress-life (S-N)/strain-life, (, ICS Number Code 19.060 (Mechanical testing)
1. Scope | ||||||||
1.1 This practice pertains only to 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 [similar] 0.05). As alternative fatigue models and statistical analyses are continually being developed, later revisions of this practice may subsequently present analyses that permit more complete interpretation of S-N and e-N data. |
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2. Referenced Documents | ||||||||
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