GB/T 1040.4-2006 Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites
1.1 This Part of GB/T 1040 specifies the test conditions for the determination of the tensile properties of isotropic and orthotropic fibre-reinforced plastic composites, based upon the general principles given in Part 1.
Unidirectionally reinforced materials are covered by Part 5 of GB/T 1040.
1.2 See GB/T 1040.1-2006 , subclause 1.2.
1.3 This Part is suitable for use with the following materials:
— Fibre-reinforced thermosetting and thermoplastic composites incorporating non-unidirectional reinforcements such as mats, woven fabrics, woven rovings, chopped strands, combinations of such reinforcements, hybrids, rovings, short or milled fibres or preimpregnated materials (prepregs) (for directly injection-moulded specimens, see specimen 1A in GB/T 1040.2-2006);
— Combinations of the above with unidirectional reinforcements and multidirectional reinforced materials constructed from unidirectional layers, provided such laminates are symmetrical;
— Finished products made from these materials.
The reinforcement fibres covered include glass fibres, carbon fibres, aramid fibres and other similar fibres.
1.4 The method is performed using specimens machined from a test panel made in accordance with ISO 1268 or by equivalent methods, or from finished and semi-finished products with suitable flat areas.
1.5 See GB/T 1040.1-2006, subclause 1.5.
GB/T 1040.4-2006 The following standards are cited：
