GB/T 2951.11-2008Common test methods for insulating and sheathing materials of electric and optical cables -- Part 11: Methods for general application -- Measurement of thickness and overall dimensions -- Tests for determining the mechanical properties (English PDF)

National Standard of the People's Republic of China

ICS

29.060

Contents

• 1 Scope
• 1.1 Normative references
• 2 Test principle
• 3 Scope of application
• 7.1 The maximum value reached by the load during the test.
• 7.2 The tensile force per unit area when the test piece is not stretched.
• 7.3 The maximum tensile stress recorded when the specimen is stretched to break.
• 8 Measurement of thickness and dimensions
• 8.1 Measurement of insulation thickness
• 8.1.1 Overview
• 8.1.2 Measuring device
• 8.1.3 Preparation of test pieces
• 8.1.4 Measurement steps
• 8.1.5 Assessment of measurement results
• 8.2 Non-metallic sheath thickness measurement
• 8.2.1 Overview
• 8.2.2 Measuring device
• 8.2.3 Preparation of test pieces
• 8.2.4 Measurement steps
• 8.2.5 Assessment of measurement results
• 8.3 Dimensional measurement
• 8.3.1 Overview
• 8.3.2 Measurement steps
• 8.3.3 Assessment of measurement results
• 9 Methods for measuring the mechanical properties of insulating and sheathing materials
• 9.1 Insulation materials
• 9.1.1 Overview
• 9.1.2 Sampling
• 9.1.3 Preparation and handling of test pieces
• 9.1.4 Measurement of cross-sectional area