BS DD186(1991) : 1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
METHOD FOR DETERMINATION OF THRESHOLD STRESS INTENSITY FACTORS AND FATIGUE CRACK GROWTH RATES IN METALLIC MATERIALS
Hardcopy , PDF
11-21-2003
English
01-01-1991
Foreword
Committees responsible
Method
1. Scope
2. Definitions
3. Main symbols
4. Principle
5. Test equipment
6. Specimens
7. Stress intensity factors
8. Crack length
9. Test procedure
10. Data analysis
11. Test report
Appendices
A. Grips and fixtures
B. Information on methods for measuring crack lengths
C. Stress intensity factor functions
D. Specimen size requirements
E. Flow charts
F. Worked examples of notional tests
G. Accuracy
Tables
1. Toleranced dimensions of specimens
2. Stress intensity factor function values for SENB3
specimens
3. Stress intensity factor function values for SENB4
specimens
4. Stress intensity factor function values for CT
specimens
5. Stress intensity factor function values for CCT
specimens
6. Growth rate and threshold test at R = 0.1
7. Growth rate and threshold test at R = 0.5
8. Constant K max threshold test
Figures
1. Three-point single edge notch bend specimen (SENB3)
2. Four-point single edge notch bend specimen (SENB4)
3. Compact tension specimen (CT)
4. Centre-cracked tension specimen (CCT)
5. Permitted notch geometries
6. Test fittings for SENB3 specimens
7. Test fittings for SENB4 specimens
8. Recommended test fittings for CT specimens
9. Recommended test fittings for pin-loaded CCT
specimens
10. Typical steel end-plate design for 250 mm wide
aluminium alloy centre cracked sheet specimen:
100 kN maximum load, R > 0
11. Constant R-method; initiation and precracking
12. Constant R-method; threshold and growth rate
determination
13. Constant K max method; initiation and precracking
14. Constant K max method; threshold determination
15. Delta K history for example 1
16. Delta K history for example 2
17. Crack length versus cycles data for examples 1,2 & 3
18. Crack growth rate versus delta K data for examples
1 and 2
19. Delta K history for example 3
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