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ASTM E1820 - 25a
Standard Test Method for Measurement of Fracture Toughness
| Fecha edición: |
2025-04-01
Anulada
|
|---|---|
| Fecha cancelación: | 2025-04-01 |
| Idiomas disponibles: | Inglés |
| Resumen: | |
| Keywords: | crack initiation; crack-tip opening displacement; |
| Scope: | 1.1 This test method covers procedures and guidelines for the determination of fracture toughness of metallic materials using the following parameters: K, J, and CTOD (δ). Toughness can be measured in the R-curve format or as a point value. The fracture toughness determined in accordance with this test method is for the opening mode (Mode I) of loading. Note 1: Until this version, KIc could be evaluated using this test method as well as by using Test Method E399. To avoid duplication, the evaluation of KIc has been removed from this test method and the user is referred to Test Method E399. 1.2 The recommended specimens are single-edge bend, [SE(B)], compact, [C(T)], and disk-shaped compact, [DC(T)]. All specimens contain notches that are sharpened with fatigue cracks. 1.2.1 Specimen dimensional (size) requirements vary according to the fracture toughness analysis applied. The guidelines are established through consideration of material toughness, material flow strength, and the individual qualification requirements of the toughness value per values sought. Note 2: Other standard methods for the determination of fracture toughness using the parameters K, J, and CTOD are contained in Test Methods E399, E1290, and E1921. This test method was developed to provide a common method for determining all applicable toughness parameters from a single test. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.4 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. 1.5 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: | E08.07 - E08.07 |
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Otras Relaciones |
Es referenciada por E647 - 24 Es referenciada por F3055 - 14a(2021) Es referenciada por F3001 - 14(2021) Es referenciada por F3056 - 14(2021) Es referenciada por E531 - 24 Es referenciada por F3184 - 16(2023) Es referenciada por E1253 - 21 Es referenciada por F3318 - 18 Es referenciada por F2924 - 14(2021) Es referenciada por E1823 - 24c Es referenciada por F3213 - 17(2025) Es referenciada por E185 - 25 Es referenciada por E636 - 20 Es referenciada por E2818 - 11(2019) Es referenciada por F3302 - 18 Es referenciada por A1099/A1099M - 20(2025) Es referenciada por ISO/ASTM52909 - 22 Es referenciada por F3607 - 22 Es referenciada por E399 - 24 Es referenciada por E2472 - 12(2018)e4 |










