GB/T 32377-2015 in English
VALIDDynamic punch-shear properties test method for fibre reinforced composites
- Issued on:2015-12-31
- Implemented on:2016-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 32377-2015纤维增强复合材料动态冲击剪切性能试验方法》由TC39（全国纤维增强塑料标准化技术委员会）归口，主管部门为中国建筑材料联合会。
本标准规定了纤维增强复合材料动态冲击剪切性能试验的术语和定义、试验原理、试验设备、试样、试验条件、试验步骤、数据计算与试验结果及试验报告。
本标准适用于纤维增强树脂基复合材料动态冲击剪切性能的测定，其他材料也可参照执行。
Introduction
1. Background and significance of the standard
GB/T 32377-2015 "Test method for dynamic impact shear performance of fiber-reinforced composite materials" is my country's first national standard for the dynamic impact shear performance of fiber-reinforced resin-based composite materials, filling the gap in this field in China. The standard was officially implemented on November 1, 2016 and is applicable to a variety of fiber-reinforced plastics and their products.
2. Core content of the standard
| Standard dimensions | Specific requirements | Technical indicators |
|---|---|---|
| Test equipment | Based on the principle of segmented one-dimensional Hopkinson bar | The striking rod, input rod and output tube must be made of the same material, and high-strength alloy steel is recommended |
| Specimen requirements | The specimen can be square or strip | The size deviation must comply with the provisions of GB/T 1446, and the preparation process must ensure stable material performance |
| Test conditions | Environmental conditions and loading speed control | The maximum permissible impact speed is calculated by the formula vmax = 2σsρ0v0 to ensure that the material does not undergo plastic deformation |
3. Implementation suggestions
Case study: Test of a resin-based composite material
In practical applications, it is recommended to select test equipment and sample size in strict accordance with standard requirements. For example, when using a φ14.5mm rod for testing, it is necessary to ensure that the inner diameter of the output tube does not exceed 0.1mm from the diameter of the input rod, and lubricants such as vaseline should be used to reduce friction resistance.
In terms of data acquisition, it is recommended to use a data acquisition instrument with a sampling frequency greater than 10MHz to ensure the integrity and accuracy of the waveform signal. When performing waveform analysis through computer software, it is necessary to remove baseline interference and accurately calculate dynamic impact shear stress and displacement.
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