GB/T 1040.5-2008 in English

《GB/T 1040.5-2008塑料 拉伸性能的测定 第5部分：单向纤维增强复合材料的试验条件》由TC15（全国塑料标准化技术委员会）归口，TC15SC4（全国塑料标准化技术委员会通用方法和产品分会）执行，主管部门为中国石油和化学工业联合会。
本部分为首次发布。
GB/T 1040《塑料　拉伸性能的测定》分为五个部分，本部分为GB/T 1040的第5部分，等同采用ISO 527-5：1997《塑料――拉伸性能的测定――第5部分：单向纤维增强复合材料的试验条件》。
GB/T 1040的本部分在第1部分基础上规定了单向纤维增强复合材料拉伸性能的试验条件。
本部分适用于用单向纤维增强的，并满足GB/T 1040本部分测试要求（包括破坏模式）的所有聚合物复合材料。
本部分适用于用热塑性材料或热固性材料制成的复合材料，包括预浸渍材料（预浸料）。涉及到的增强材料包括碳纤维、玻璃纤维、聚芳酰胺纤维或其他类似纤维。涉及到的增强材料几何形状，包括单向（即完全成一条直线的）纤维、无捻粗纱以及单向织物和窄带织物等。
本部分不适用于由几种单向层压板在不同角度下复合成的多向复合材料。

1 Scope

1.1 This part of GB/T 1040 specifies the test conditions for the determination of the tensile properties of unidirectional fibre-reinforced plastic composites, based upon part 1.

1.2 See GB/T 1040.1-2006, Section 1.2.

1.3 This part is suitable for all polymer matrix systems reinforced with unidirectional fibres and which meet the requirements, including failure mode, set out in this part of GB/T 1040.

This part is suitable for composites with either thermoplastic or thermosetting matrices, including preimpregnated materials (prepregs). The reinforcements covered include carbon fibres, glass fibres, aramid fibres and other similar fibres. The reinforcement geometries covered include unidirectional (i.e. completely aligned) fibres and rovings and unidirectional fabrics and tapes.

This part is not normally suitable for multidirectional materials composed of several unidirectional layers at different angles (see GB/T 1040.4-2006).

1.4 This part is performed using one of two different types of test specimen, depending on the direction of the applied stress relative to the fibre direction (see Chapter 6)

1.5 See GB/T 1040.1-2006, Section 1.5

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this part of GB/T 1040. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties who enter into agreement according to this standard are encouraged to study whether the latest editions of these documents apply. For undated references, the latest edition applies to this standard.

GB/T 1040.1-2006 Plastics - Determination of Tensile Properties - Part 1: General Principles (ISO 527-1:1993, IDT)
GB/T 1040.4-2006 Plastics - Determination of Tensile Properties - Part 4: Test Conditions for Isotropic and Orthotropic Fibre-reinforced Plastic Composites (ISO 527-4:1997, IDT)
ISO 1268:1974 Plastics - Preparation of Glass Fibre Reinforced, Resin Bonded, Low-pressure Laminated Plates or Pane/s for Test Purposes
ISO 2818:1994 Plastics - Preparation of Test Specimens by Machining
ISO 3534-1:1993 Statistics - Vocabulary and Symbols - Part I: Probability and General Statistical Terms
ISO 9291:1996 Textile-glass-reinforced Plastics - Rovings - Preparation of Unidirectional Panals by Winding

3 Principle

See GB/T 1040.1-2006, Chapter 3.

4 Terms and Definitions

Foreword i
1 Scope
2 Normative References
3 Principle
4 Terms and Definitions
5 Apparatus
6 Test Specimens
7 Number of specimens
8 Conditioning
9 Procedure
10 Calculation and Expression of Results
11 Precision
12 Test Report
Annex A (Normative) Specimen Preparation
Annex B (Informative) Alignment of Specimens