This part of IEC 62627 gives an example of the design of an acceptance test for ferrule style connectors when the dominant failure mode is fibre pistoning. The example applies to connectors which use epoxies or other adhesive polymers to bond the fibre into a ferrule. It combines existing evidence, mechanistic hypotheses and the demarcation approximation to develop an accelerated environmental exposure sequence that can be used on a pass-only basis to help ensure reliable service. This technical report was developed to serve only as an example of how accelerated acceptance tests can be designed. It is not intended as a normative standard for any specific application.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Optical fibre connectors and the pistoning failure mode 3 Demarcation map theory for thermally activated processes 3.1 Concept of demarcation energy <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Figure 1 \u2013 Reaction extent as a function of activation energy compared to the \u2206k1t function <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.2 Demarcation maps Figure 2 \u2013 Demarcation maps for service life and accelerated test of example in 4.2 <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Plausible physical effects in a model of the degradation process associated with fibre pistoning 4.1 General <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.2 Simple temperature humidity models Table 1 \u2013 Accelerated test index of coverage for simple temperature-humidity model <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.3 Temperature humidity models with diffusion 4.4 A model of delamination <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Figure 3 \u2013 Schematic for the delamination process <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.5 A model of stress relaxation <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.6 Two models bounding cyclic hysteresis <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5 Summary of results and discussion Table 2 \u2013 Index of coverage, numerical experiments <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic interconnecting devices and passive components – Reliability. Design of an acceptance test for fibre pistoning failure of connectors during temperature and humidity cycling. Demarcation analysis<\/b><\/p>\n |