FOREWORD
1 Scope and object
2 Tests of mechanical characteristics
3 Operational definitions
    3.1 Mechanical strength of a length of glass fibre
4 Physical defects
5 Method IEC 60793-1 B1 - Optical fibre proof test
    5.1 Object
    5.2 Apparatus
          5.2.1 Fibre pay-out
          5.2.2 Proof test region
          5.2.3 Fibre take-up
          5.2.4 Load and unload
          5.2.5 Minimum bending radii
          5.2.6 Equipment examples
    5.3 Sample preparation
    5.4 Procedure
    5.5 Compensation for load sharing by coating -
          Calculations
    5.6 Results
          5.6.1 Fibre failure
          5.6.2 Required information
          5.6.3 Optional information
6 Method IEC 60793-1-B2 - Tensile strength of optical
    fibres
    6.1 Object
    6.2 Sample preparation
    6.3 Apparatus
    6.4 Conditioning (if required, see detail
          specification)
    6.5 Procedure
    6.6 Results
    6.7 Presentation and analysis of the results
7 Method IEC 60793-1-B6 - Strippability
    7.1 Object
    7.2 Apparatus
          7.2.1 Tensile equipment
          7.2.2 Load cell
          7.2.3 Transducer amplifier
          7.2.4 Stripping tool
          7.2.5 Fibre guide
    7.3 Sample preparation
          7.3.1 Representative samples
          7.3.2 Sample length
    7.4 Procedure
    7.5 Results
8 Determination of stress corrosion susceptibility
    parameters
9 Method IEC 60793-1-B7A - Method for measuring dynamic
    fatigue parameters of optical fibres by axial tension
    9.1 Object
    9.2 Apparatus
    9.3 Test sample
    9.4 Procedure
    9.5 Calculations
    9.6 Results
10 Method IEC 60793-1-B7B - Method for measuring dynamic
    fatigue parameter of optical fibres by two-point
    bending
    10.1 Object
    10.2 Apparatus
    10.3 Test sample
    10.4 Procedures
    10.5 Calculations
    10.6 Results
11 Method IEC 60793-1-B7C - Method for measuring static
    fatigue parameters of optical fibres by axial tension
    11.1 Object
    11.2 Apparatus
           11.2.1 Gripping the fibre at both ends
           11.2.2 Stressing the fibre
           11.2.3 Measuring time to fracture
    11.3 Test sample - Sample size for each nominal
           stress level
    11.4 Procedure
    11.5 Calculations
           11.5.1 Fracture stress
           11.5.2 Static (tension) stress corrosion
                    susceptibility parameter ns
    11.6 Results
12 Method IEC 60793-1-B7D - Method for measuring the
    static fatigue parameters of optical fibres by
    two-point bending
    12.1 Object
    12.2 Apparatus
    12.3 Test sample
    12.4 Procedure
    12.5 Calculations
           12.5.1 Fracture stress
           12.5.2 Static (two-point bending) stress
                    corrosion susceptibility parameter ns
    12.6 Results
13 Method IEC 60793-1-B7E - Method for measuring static
    fatigue parameters of optical fibres by uniform
    bending
    13.1 Object
    13.2 Apparatus
           13.2.1 Support of the sample
           13.2.2 Stressing the fibre
           13.2.3 Measuring time to fracture
    13.3 Test sample
    13.4 Procedure
    13.5 Calculations
           13.5.1 Fracture stress
           13.5.2 Static (uniform bending) stress
                    corrosion susceptibility parameter ns
    13.6 Results
14 Method IEC 60793-1-B8A - Measurement of optical fibre
    curl by side-view microscopy
    14.1 Object
    14.2 Apparatus
           14.2.1 Fibre fixture
           14.2.2 Rotating holder
           14.2.3 Deflection measurement device
           14.2.4 Video camera and monitor
           14.2.5 Test procedure
           14.2.6 Computer
    14.3 Test sample
    14.4 Test procedure
           14.4.1 Procedure for method A
           14.4.2 Procedure for method B
    14.5 Calculations
           14.5.1 Calculations for method A
           14.5.2 Calculations for method B
           14.5.3 Calculations common to both methods
    14.6 Results
15 Method IEC 60793-1-B8B - Measurement of optical fibre
    curl by laser beam scattering
    15.1 Object
    15.2 Apparatus
           15.2.1 Light source
           15.2.2 Detector
    15.3 Test sample
    15.4 Procedure
           15.4.1 Calibration
           15.4.2 Measurement
    15.5 Results
Annex A (normative) Statistical calculation concerning
        the fracture stress testing
Annex B (informative) Guidance for the use of stress
        corrosion susceptibility parameter test methods
Annex C (informative) Derivation of the circular fibre
        curl model
Annex D (informative) Measurement of optical fibre curl
        by laser beam scattering