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    ASTM E647-15

    Standard Test Method for Measurement of Fatigue Crack Growth Rates
    • 발행일 : 2015-05-01
    • 발행기관 : ASTM
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상세정보

분야 03.01 : 금속-기계적 시험;가열 및 저온시험;금속 조직학
적용범위

1.1 This test method2 covers the determination of fatigue crack growth rates from near-threshold to Kmax controlled instability. 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/crack closure may significantly influence the fatigue crack growth rate data, particularly at low stress-intensity factors and low stress ratios, although such variables are not incorporated into the computation of 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:

 

Section

Referenced Documents

2

Terminology

3

Summary of Use

4

Significance and Use

5

Apparatus

6

Specimen Configuration, Size, and Preparation

7

Procedure

8

Calculations and Interpretation of Results

9

Report

10

Precision and Bias

11

Special Requirements for Testing in Aqueous Environments

Annex A4

Guidelines for Use of Compliance to Determine Crack Size

Annex A5

Guidelines for Electric Potential Difference Determination of Crack Size

Annex A6

Recommended Data Reduction Techniques

Appendix X1

Recommended Practice for Determination of Fatigue Crack Opening Force From Compliance

Appendix X2

Guidelines for Measuring the Growth Rates Of Small Fatigue Cracks

Appendix X3

Recommended Practice for Determination Of ACR-Based Stress-Intensity Factor Range

Appendix X4

1.9 Special requirements for the various specimen configurations appear in the following order:

The Compact Specimen

Annex A1

The Middle Tension Specimen

Annex A2

The Eccentrically-Loaded Single Edge Crack Tension Specimen

Annex A3

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 and health practices and determine the applicability of regulatory limitations prior to use.
국제분류(ICS)코드
페이지수 48
Edition 15

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM E647-24상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2024-05-01 표준
2 ASTM E647-24 REDLINE상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2024-05-01 표준
3 ASTM E647-23b상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2023-11-15 구판
4 ASTM E647-23a REDLINE상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2023-06-01 구판
5 ASTM E647-23a상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2023-06-01 구판
6 ASTM E647-23상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2023-02-01 구판
7 ASTM E647-23 REDLINE상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2023-02-01 구판
8 ASTM E647-22b REDLINE상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2022-09-15 구판
9 ASTM E647-22b상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2022-09-15 구판
10 ASTM E647-22a상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2022-08-01 구판
11 ASTM E647-22상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2022-07-01 구판
12 ASTM E647-15상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2015-05-01 구판
13 ASTM E647-15e1상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2015-05-01 구판
14 ASTM E647-13a상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2013-10-15 구판
15 ASTM E647-13ae1상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2013-10-15 구판
16 ASTM E647-13e1상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2013-01-15 구판
17 ASTM E647-13상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2013-01-15 구판
18 ASTM E647-11상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2011-05-01 구판
19 ASTM E647-08e1상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2008-04-01 구판
20 ASTM E647-08상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2008-04-01 구판
21 ASTM E647-11e1상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2008-04-01 구판
22 ASTM E647-05상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2005-06-15 구판
23 ASTM E647-99상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2000-12-10 구판
24 ASTM E647-95상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2000-12-10 구판
25 ASTM E647-00상세보기 Standard Test Method for Measurement of Fatigue Crack Growth Rates 2000-12-10 구판

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