BS ISO 12106:2017
$189.07
Metallic materials. Fatigue testing. Axial-strain-controlled method
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 48 |
This document specifies a method of testing uniaxially deformed specimens under strain control at constant amplitude, uniform temperature and fixed strain ratios including at Re = −1 for the determination of fatigue properties. It can also be used as a guide for testing under other R-ratios, as well as elevated temperatures where creep deformation effects may be active.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | Foreword |
| 8 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 11 | 4 Symbols 4.1 Specimens 4.2 Fatigue testing 4.2.1 Symbols |
| 13 | 4.2.2 Subscripts 4.3 Expression of results 5 Apparatus 5.1 Test machine 5.1.1 General |
| 14 | 5.1.2 Force transducer 5.1.3 Gripping of specimen 5.1.4 Alignment check |
| 15 | 5.2 Strain measurement |
| 16 | 5.3 Heating device and temperature measurement 5.4 Instrumentation for test monitoring 5.4.1 Recording systems |
| 17 | 5.4.2 Cycle counter 5.5 Checking and verification 6 Specimens 6.1 Geometry 6.1.1 Round bars |
| 18 | 6.1.2 Flat sheet products |
| 22 | 6.2 Preparation of specimens 6.2.1 General 6.2.2 Machining procedure |
| 23 | 6.2.3 Sampling and marking 6.2.4 Surface condition of specimen |
| 24 | 6.2.5 Dimensional check 6.2.6 Storage and handling 7 Procedure 7.1 Laboratory environment 7.2 Test machine control |
| 25 | 7.3 Mounting of the specimen 7.4 Cycle shape — Strain rate or frequency of cycling |
| 26 | 7.5 Start of test 7.5.1 Preliminary measurements |
| 27 | 7.5.2 Test commencement 7.6 Number of specimens 7.7 Data recording 7.7.1 Stress-strain hysteresis loops 7.7.2 Data acquisition |
| 28 | 7.8 End of test 7.9 Failure criteria |
| 30 | 8 High-temperature strain-controlled creep-fatigue testing |
| 31 | 9 Expression of results 9.1 Basic data (recorded data (see 7.7)) 9.2 Analysis of low-cycle fatigue results at Re = −1 9.2.1 Distinction between different types of strain values |
| 32 | 9.2.2 Determination of fatigue life (see 7.9) 9.2.3 Stress-strain and strain-fatigue life relationships |
| 33 | 9.3 Analysis of creep-fatigue results 10 Test report 10.1 General |
| 34 | 10.2 Purpose of the test 10.3 Material 10.4 Specimen 10.5 Test methods |
| 35 | 10.6 Test conditions 10.7 Presentation of results 10.7.1 Presentation of single test results |
| 36 | 10.7.2 Presentation of results of test series |
| 37 | 10.8 Values to be stored in a low-cycle fatigue database |
| 39 | Annex A (informative) Measurement uncertainty |
| 41 | Annex B (informative) Examples of graphical presentation of results |
| 45 | Bibliography |
