International Electrotechnical Commission

Optical Fibres - Part 1-33: Measurement Methods and Test Procedures - Stress Corrosion Susceptibility - Edition 1.0; Together with the Other Standards in the  60793-1-3X Series, Cancels and Replaces the Second Edition of  60793-1-3
 N 60793-1-33

Annotation

Scope and object

This part of IEC 60793 contains descriptions of the five main test methods concerning the determination of stress corrosion susceptibility parameters.

The object of this standard is to establish uniform requirements for the mechanical characteristic stress corrosion susceptibility. Dynamic fatigue and static fatigue tests are used in practice to determine stress corrosion susceptibility parameters, dynamic n-value and static n-value.

Any fibre mechanical test should determine fracture stress and fatigue properties under conditions that model the practical application as close as possible. Some appropriate test methods are available:

– A: Dynamic n value by axial tension;

– B: Dynamic n value by two-point bending;

– C: Static n value by axial tension;

– D: Static n value by two-point bending;

– E: Static n value by uniform bending.

These methods are appropriate for types A1, A2 and A3 multimode and type B1 single-mode fibres.

Static and dynamic fatigue test methods show comparable results if both tests are performed in the same effective measuring time. For dynamic fatigue tests this means a measuring time which is (n + 1) times larger than the measuring time of static fatigue tests.