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BS EN 62429:2008 Reliability growth. Stress testing for early failures in unique complex systems, 2009
- iec62469{ed1.0}en.pdf [Go to Page]
- CONTENTS
- 1 Scope
- 2 Justification of measurement
- 3 Apparatus [Go to Page]
- 3.1 General
- 3.2 Light source
- 3.3 Polarizer and analyzer
- 3.4 Sample fibre preparation
- 3.5 Variable phase compensator
- 3.6 Optical intensity detection
- 3.7 Data acquisition
- 4 Data analysis and formula [Go to Page]
- 4.1 General
- 4.2 1-D stress profile for a fibre with a cylindrically symmetric structure
- 4.3 2-D stress profile for a fibre with a cylindrically non-symmetric structure
- 5 Measurement procedure [Go to Page]
- 5.1 Alignment of polarizer and analyzer
- 5.2 Fibre mounting
- 5.3 Taking transmitted intensity data I(g, th)
- 5.4 Calculation of 1-D stress profile for a fibre with a cylindrically symmetric structure
- 5.5 Calculation of 2-D stress profile for a fibre with a cylindrically non-symmetric structure
- 6 Documentation [Go to Page]
- 6.1 Information to be reported for each measurement
- 6.2 Information that should be available upon request
- Bibliography
- Figure 1 – Polariscopic phase retardation measurement setup for an optical fibre
- Figure 2 – Measured transmission intensity as a function of fibre radius and external phase
- Figure 3 – Propagation of laser light across the fibre cross-section.
- Figure 4 – Stress profile for a fibre with depressed inner cladding and jacketed tube
- Figure 5 – Examples of projected phase retardation measurement d(y) for a PM fibre as a function of fibre radius y when the projected angle a is 0°, 45°, 90°, and 135°
- Figure 6 – Measured projected phases d(y, a) of a PM fibre for various projected angles as a function of fibre radius
- Figure 7 – Calculated 2-D stress profile of a PM fibre
- iec62429{ed1.0}b.pdf [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, abbreviations and symbols [Go to Page]
- 3.1 Terms and definitions
- 3.2 Abbreviations
- 3.3 Symbols
- 4 General
- 5 Planning and performing a reliability growth test [Go to Page]
- 5.1 Step 1 – Should a reliability growth test be used?
- 5.2 Step 2 – Failure definitions and data collection
- 5.3 Step 3 – Stress levels
- 5.4 Step 4 – Failure analysis and classification of failures
- 5.5 Step 5 – Stop criteria
- 5.6 Step 6 – Verification of repairs and reliability growth
- 5.7 Step 7 – Reporting and feedback
- Annex A (informative) Practical example of method 3 – Success ratio test
- Annex B (informative) Practical example of method 5 – Comparison with acceptable instantaneous failure intensity
- Annex C (informative) Practical example of method 6 – Estimation of remaining latent faults
- Bibliography
- Figure 1 – The bathtub curve
- Figure 2 – Evaluating whether the cumulative failure curve has levelled out
- Figure 3 – Method 2
- Figure B.1 – Reliability growth plot from data from Table B.1
- Table 1 – Probability that a system with failure probability of 0,001 will pass N successive tests
- Table 2 – Probability that a system with failure probability of 0,000 001 will pass N successive tests
- Table 3 – Correct and incorrect decisions using reliability indicators
- Table B.1 – Reliability growth and stopping times for the practical example
- Table C.1 – Determinination for stopping test
- Français [Go to Page]
- SOMMAIRE
- AVANT-PROPOS
- 1 Domaine d'application
- 2 Références normatives
- 3 Termes, définitions, abréviations et symboles [Go to Page]
- 3.1 Termes et définitions
- 3.2 Abréviations
- 3.3 Symboles
- 4 Généralités
- 5 Planification et réalisation d’un essai de croissance de fiabilité [Go to Page]
- 5.1 Etape 1 – Est-il recommandé d’utiliser un essai de croissance de fiabilité?
- 5.2 Etape 2 – Définitions des défaillances et recueil de données
- 5.3 Etape 3 – Niveaux de contraintes
- 5.4 Etape 4 – Analyse de défaillance et classification des défaillances
- 5.5 Etape 5 – Critères d'arrêt
- 5.6 Etape 6 Vérification des réparations et de la croissance de fiabilité
- 5.7 Etape 7 – Rapport et rétroaction
- Annexe A (informative) Exemple pratique de la méthode 3 – Essai de taux de succès
- Annexe B (informative) Exemple pratique de la méthode 5 – Comparaison avec l’intensité instantanée de défaillance acceptable
- Annexe C (informative) Exemple pratique de la méthode 6 – Estimation des pannes latentes restantes
- Bibliographie
- Figure 1 – Courbe en baignoire
- Figure 2 – Evaluation de la hausse ou de la baisse de la courbe de défaillance cumulée
- Figure 3 – Méthode 2
- Figure B.1 – Tracé de croissance de fiabilité des données du Tableau B.1
- Tableau 1 – Probabilité selon laquelle un système avec une probabilité de défaillance de 0,001 subira avec succès N essais successifs
- Tableau 2 – Probabilité selon laquelle un système avec une probabilité de défaillance de 0,000 001 subira avec succès N essais successifs
- Tableau 3 – Décisions correctes et incorrectes en utilisant les indicateurs de fiabilité
- Tableau B.1 – Croissance de fiabilité et temps d’arrêt pour l’exemple pratique
- Tableau C.1 – Détermination de l’instant où l’essai doit être arrêté [Go to Page]