Estamos mejorando nuestra Tienda, Portal de clientes y Aenormas para ofrecerte una mejor experiencia.
Si detectas cualquier incidencia o necesitas ayuda durante el proceso de compra, puedes contactarnos a través del chat o escribirnos a normas@aenor.com.
Nuestro equipo estará encantado de ayudarte.
ASTM E647 - 24
Standard Test Method for Measurement of Fatigue Crack Growth Rates
| Fecha edición: |
2024-05-01
En Vigor
|
||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Idiomas disponibles: | Inglés | ||||||||||||||||||||||||||||||||||||
| Resumen: | |||||||||||||||||||||||||||||||||||||
| Keywords: | constant amplitude; crack size; fatigue crack growth rate; stress-intensity factor range; | ||||||||||||||||||||||||||||||||||||
| Scope: | 1.1 This test method2 covers the determination of fatigue crack growth rates from near-threshold (see region I in Fig. 1) to Kmax controlled instability (see region III in Fig. 1.) Results are expressed in terms of the crack-tip stress-intensity factor range (ΔK), defined by the theory of linear elasticity. 1.2 Several different test procedures are provided, the optimum test procedure being primarily dependent on the magnitude of the fatigue crack growth rate to be measured. 1.3 Materials that can be tested by this test method are not limited by thickness or by strength so long as specimens are of sufficient thickness to preclude buckling and of sufficient planar size to remain predominantly elastic during testing. 1.4 A range of specimen sizes with proportional planar dimensions is provided, but size is variable to be adjusted for yield strength and applied force. Specimen thickness may be varied independent of planar size. 1.5 The details of the various specimens and test configurations are shown in Annex A1 – Annex A3. Specimen configurations other than those contained in this method may be used provided that well-established stress-intensity factor calibrations are available and that specimens are of sufficient planar size to remain predominantly elastic during testing. 1.6 Residual stress as well as a variety of shielding effects such as crack closure may significantly influence the interpretation of fatigue crack growth rate data, particularly at low stress-intensity factors and low force ratios (1, 2).3 None of these variables are incorporated into the classical computation of applied ΔK. 1.7 Values stated in SI units are to be regarded as the standard. Values given in parentheses are for information only. 1.8 This test method is divided into two main parts. The first part gives general information concerning the recommendations and requirements for fatigue crack growth rate testing. The second part is composed of annexes that describe the special requirements for various specimen configurations, special requirements for testing in aqueous environments, and procedures for non-visual crack size determination. In addition, there are appendices that cover techniques for calculating da/dN, determining fatigue crack opening force, and guidelines for measuring the growth of small fatigue cracks. General information and requirements common to all specimen types are listed as follows:
1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.11 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. |
||||||||||||||||||||||||||||||||||||
| ICS: | 77.040.10 - Ensayos mecánicos de metales | ||||||||||||||||||||||||||||||||||||
| CTN: | E08.06 - E08.06 | ||||||||||||||||||||||||||||||||||||
|
Otras Relaciones |
Es referenciada por E2899 - 24e1 Es referenciada por F3055-14AR21 Es referenciada por F3056-14R21 Es referenciada por G0107-95R20E01 Es referenciada por F3184-16R23 Es referenciada por G0129-21 Es referenciada por F2565-21 Es referenciada por E2714-13R20 Es referenciada por F3318-18 Es referenciada por F2924-14R21 Es referenciada por F3302-18 Es referenciada por F3439-22 Es referenciada por F2759-19 Es referenciada por F3607-22 Es referenciada por E1681-23E01 Es referenciada por E1457-23E01 Es referenciada por E1823 - 24c Es referenciada por F3213 - 17(2025) Es referenciada por E399 - 24 Es referenciada por E2760 - 19e3 |
Normas citadas
Libros relacionados
Normas relacionadas
Otras colecciones temáticas
