GB/T 41762.1-2025 Active

This document describes the test method for determining the performance (i.e., strength, elastic modulus, Poisson's ratio, and failure strain) in the thickness direction of fiber-reinforced plastic composites using rectangular and/or wafer-shaped specimens.
This document is applicable to laminates with a thickness of 20 mm to 40 mm, with fiber forms including oriented and non-oriented, continuous and discontinuous, and matrix types including thermoset and thermoplastic.
This document describes the following three specimen types: — Type I, with a rectangular cross-section that remains constant along the thickness direction of the specimen. Type I specimens are suitable for determining elastic properties. — Type II, with a wafer-shaped and rectangular cross-section that varies along the thickness direction of the specimen. Type II specimens are suitable for determining the tensile strength of highly anisotropic and thermoplastic materials. — Type III, with a wafer-shaped and rectangular cross-section that remains constant along the gauge length of the specimen. Type III specimens are suitable for determining elastic and strength properties, providing a complete stress-strain response.
Type I and Type II specimens are also applicable to non-reinforced plastics, but not to rigid porous materials and sandwich structures containing porous materials.
This document presents two test methods: — Method A - Tensile testing. — Method B - Compression testing.