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BS ISO 15654:2015 Fatigue test method for transmission precision roller chains and leaf chains, 2015
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BS ISO 15654:2015 Fatigue test method for transmission precision roller chains and leaf chains, 2015
- Foreword
- 1 Scope
- 2 Normative references
- 3 Symbols
- 4 Principle
- 5 Apparatus
- 5.1 Testing machine
- 5.2 Test fixtures
- 6 Test specimens
- 7 Test procedure
- 7.1 Test forces
- 7.1.1 Minimum force
- 7.1.2 Maximum force
- 7.1.3 Test force
- 7.1.4 Force application
- 7.2 Conformity test
- 7.2.1 Purpose
- 7.2.2 Endurance
- 7.2.3 Minimum test force
- 7.2.4 Maximum test force
- 7.2.5 Number of tests
- 7.2.6 Acceptance
- 7.3 Staircase test
- 7.3.1 Purpose
- 7.3.2 Description
- 7.3.3 Endurance
- 7.3.4 Rules for conducting a staircase test
- 7.3.5 Determining step size
- 8 Staircase test data analysis
- 8.1 Data
- 8.2 Plotting staircase data
- 8.3 Statistical calculations
- 8.3.1 Mean fatigue strength: 0,50 probability of survival
- 8.3.2 Standard deviations
- 8.3.3 Fatigue limit: 0,998 65 probability of survival
- 9 Report of test results
- 9.1 Test chain information
- 9.2 Test equipment and procedures
- 9.2.1 Test equipment
- 9.2.2 Test procedures
- 9.3 Test results for conformity and staircase tests
- Annex A (informative) Survival test with abridged Probit analysis
- Annex B (informative) Combined test methods
- Annex C (informative) Justification for adding one step to fatigue limit in staircase analysis
- Annex D (informative) Adding an additional “phantom” point at the end of staircase test
- Annex E (informative) Reporting fatigue test results
- Annex F (informative) Establishing chain application fatigue ratings
- Annex G (informative) Extrapolating fatigue strength from 3 × 106 to 107 cycles
- Annex H (informative) Finite life testing and data analysis
- Bibliography [Go to Page]
