BS ISO 12110-1:2013
$167.15
Metallic materials. Fatigue testing. Variable amplitude fatigue testing – General principles, test method and reporting requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 34 |
This part of ISO 12110 establishes general principles for fatigue testing of laboratory specimens under a sequence of cycles the amplitude of which varies from cycle to cycle.
This sequence of cycles is called loading time history (see 3.7) and is usually derived from loading measurements performed on components or structures submitted to true service loadings.
Detailed description of service loads recording is relevant to each laboratory or industrial sector and is therefore outside the scope of this part of ISO 12110.
The aim of the two parts of ISO 12110 is to set requirements and give some guidance on how to perform a variable amplitude fatigue test in order to produce consistent results for comparison purposes taking into account the typical scatter of fatigue data. Achieving this should help designers to correlate models and experimental data obtained from various sources.
Since this part of ISO 12110 involves mainly loading time histories and control signal generation, one expects it might be applied to strain or fatigue crack growth rate controlled loading conditions as well as to force-controlled loading conditions. This is theoretically true but precautions may be taken when applying this part of ISO 12110 to loading modes other than force-controlled loading mode.
This part of ISO 12110 relates to variable amplitude loading under force control mode which corresponds to most of the variable amplitude fatigue tests performed worldwide at the date of publication of this part of ISO 12110.
This part of ISO 12110 applies to the single actuator loading mode which corresponds to uniaxial loading in many cases.
The variable amplitude loading time histories referred in this part of ISO 12110 are deterministic; that is why this part of ISO 12110 deals with variable amplitude loading instead of random loading.
The following issues are not within the scope of this part of ISO 12110 and therefore will not be addressed.
-
constant amplitude tests with isolated overloads or underloads;
-
tests on large components or structures;
-
environmental effects like corrosion, creep linked to temperature/time interactions leading to frequency and waveform effects;
-
multiaxial loading.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Section sec_1 Section sec_2 1 Scope 2 Normative references |
| 8 | Section sec_3 Section sec_3.1 Section sec_3.2 Section sec_3.3 Section sec_3.4 Section sec_3.5 Section sec_3.6 3 Terms and definitions |
| 9 | Section sec_3.7 Section sec_3.8 Section sec_3.9 Section sec_3.10 Section sec_3.11 Section sec_3.12 Section sec_3.13 Section sec_3.14 |
| 10 | Section sec_4 Section sec_4.1 Section sec_4.2 4 Principle of test 4.1 Control signal generation 4.2 Overview of test procedure |
| 11 | Section sec_5 Section sec_5.1 Section sec_5.2 Section sec_5.2.1 Section sec_5.2.2 5 Original loading time history 5.1 General 5.2 Data filtering |
| 12 | Section sec_6 Section sec_6.1 Section sec_6.2 Section sec_6.3 6 Loading time history description 6.1 General 6.2 Time history sequences description 6.3 Cycle counting description |
| 13 | Section sec_7 Section sec_8 Section sec_8.1 7 Programmed blocks 8 Transition matrix and generation of control signal from the matrix 8.1 Establishment of the matrix |
| 14 | Section sec_8.2 Section sec_8.2.1 Section sec_8.2.2 8.2 Reconstruction of the loading signal |
| 15 | Section sec_8.3 Section sec_8.3.1 Section sec_8.3.2 Section sec_9 8.3 Control signal simplification 9 Conducting fatigue testing under variable amplitude conditions |
| 16 | Section sec_10 Section sec_10.1 Section sec_10.2 Section sec_10.3 Section sec_10.3.1 Section sec_10.3.2 10 Test report for each individual specimen 10.1 General 10.2 Original loading description 10.3 Testing conditions |
| 17 | Section sec_10.3.3 Section sec_10.3.4 |
| 18 | Section sec_10.4 10.4 Preliminary analysis of test data for each specimen and for a series of specimens |
| 19 | Figure fig_1 |
| 20 | Table tab_b Figure fig_2 Table tab_c Figure fig_3 |
| 21 | Table tab_d Figure fig_4 |
| 22 | Table tab_e Figure fig_5 Table tab_f Figure fig_6 |
| 23 | Table tab_g Figure fig_7 |
| 24 | Annex sec_A Table tab_A.1 Annex A (informative) Standard loading time histories |
| 25 | Annex sec_B Table tab_B.1 Annex B (informative) Example of loading signal reconstruction by random draw in the transition matrix |
| 26 | Figure fig_B.1 |
| 27 | Annex sec_C Annex sec_C.1 Annex sec_C.2 Annex sec_C.3 Annex C (informative) Preliminary analysis of test data on a single specimen |
| 28 | Annex sec_C.4 Annex sec_C.5 |
| 29 | Table tab_j Figure fig_C.1 Table tab_k Figure fig_C.2 |
| 30 | Reference ref_1 Reference ref_2 Reference ref_3 Reference ref_4 Reference ref_5 Bibliography |
