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BS EN 60793-1-33:2017 Optical fibres - Measurement methods and test procedures - Stress corrosion susceptibility, 2017
- undefined
- English [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Overview of test methods
- 5 Reference test methods
- 6 Apparatus
- 7 Sampling and specimens [Go to Page]
- 7.1 General
- 7.2 Specimen length
- 7.3 Specimen preparation and conditioning
- 8 Procedure
- 9 Calculations
- 10 Results
- 11 Specification information
- Annex A (normative) Dynamic n value, nd, by axial tension [Go to Page]
- A.1 General
- A.2 Apparatus [Go to Page]
- A.2.1 General
- Figures [Go to Page]
- Figure A.1 – Schematic of translation test apparatus [Go to Page]
- A.2.2 Support of the specimen
- Figure A.2 – Schematic of rotational test apparatus
- Figure A.3 – Schematic of rotational test apparatus with load cell [Go to Page]
- A.2.3 Stressing application
- A.2.4 Fracture force measurement
- A.2.5 Strain rate control
- A.2.6 Stress rate characterization
- A.3 Test sample [Go to Page]
- A.3.1 Sample size
- A.3.2 Sample size (optional)
- A.4 Procedure
- A.5 Calculations [Go to Page]
- A.5.1 Fracture stress
- A.5.2 Fracture stress at a given strain rate
- A.5.3 Dynamic (tension) stress corrosion susceptibility parameter, nd
- A.6 Results
- Figure A.4 – Representation of dynamic fatigue graph
- Annex B (normative) Dynamic n value, nd, by two-point bending [Go to Page]
- B.1 General
- B.2 Apparatus [Go to Page]
- B.2.1 General
- B.2.2 Stepper motor control
- B.2.3 Stepper motor-driven movable platen
- B.2.4 Stationary platen
- B.2.5 Platen velocity
- B.2.6 Fibre fracture detecting system
- B.3 Test sample
- B.4 Procedure
- B.5 Calculations [Go to Page]
- B.5.1 Fracture stress
- B.5.2 Dynamic (two-point bending) stress corrosion susceptibility parameter, nd
- B.5.3 Results
- Figure B.1 – Schematic of two-point bending unit
- Figure B.2 – Schematic of possible dynamic fatigue (two-point bending) apparatus
- Figure B.3 – Schematic of dynamic fatigue data
- Annex C (normative) Static n value, ns, by axial tension [Go to Page]
- C.1 General
- C.2 Apparatus [Go to Page]
- C.2.1 General
- C.2.2 Gripping the fibre at both ends
- C.2.3 Stressing the fibre
- C.2.4 Measuring time to fracture
- C.3 Test sample
- C.4 Procedure
- C.5 Calculations [Go to Page]
- C.5.1 Fracture stress
- C.5.2 Static (tension) stress corrosion susceptibility parameter, ns
- C.5.3 Simple median
- C.6 Results
- Figure C.1 – Schematic of possible static fatigue (tension) apparatus
- Annex D (normative) Static n value, ns, by two-point bending [Go to Page]
- D.1 General
- D.2 Apparatus [Go to Page]
- D.2.1 Test equipment
- D.2.2 Fibre fracture detection
- D.3 Test sample
- D.4 Procedure
- D.5 Calculations [Go to Page]
- D.5.1 Fracture stress
- D.5.2 Static (two-point bending) stress corrosion susceptibility parameter, ns
- D.6 Results
- Figure D.1 – Possible test equipment schematic
- Annex E (normative) Static n value, ns, by uniform bending [Go to Page]
- E.1 General
- E.2 Apparatus [Go to Page]
- E.2.1 General
- E.2.2 Support of the sample
- E.2.3 Stressing the fibre
- E.2.4 Measuring time to fracture
- E.3 Test sample
- E.4 Procedure
- E.5 Calculations [Go to Page]
- E.5.1 Fracture stress
- E.5.2 Static (uniform bending) stress corrosion susceptibility parameter, ns
- E.6 Results
- Figure E.1 – Schematic of possible static fatigue (uniform bending) apparatus
- Annex F (informative) Considerations for dynamic stress corrosion susceptibility parameter calculations [Go to Page]
- F.1 Specimen size and sample size [Go to Page]
- F.1.1 Specimen size
- F.1.2 Sample size
- F.2 Numeric algorithm for calculation of dynamic stress corrosion susceptibility parameter, nd
- Table F.1 – 95 % confidence interval for nd [Go to Page]
- F.3 Complete method to calculate fracture stress
- Annex G (informative) Considerations for static stress corrosion susceptibility parameter calculations [Go to Page]
- G.1 Homologous method
- G.2 Maximum likelihood estimate
- Annex H (informative) Considerations on stress corrosion susceptibility parameter test methods [Go to Page]
- H.1 General
- H.2 Crack growth
- H.3 Types of stress corrosion susceptibility test methods
- H.4 Comparison of n value obtained with different methods
- H.5 Conclusion
- Figure H.1 – COST 218 round robin results of fracture strength versus "effective"time-to-fracture for dynamic and static axial tension, dynamic and static two-point bending and static mandrel test methods
- Figure H.2 – COST 218 round robin results of fracture strength versus "effective"time-to-fracture for dynamic and static axial tension, dynamic and static two-point bending and static mandrel test methods
- Bibliography [Go to Page]