GB/T 41955-2022Test method for compression of fiber reinforced polymer matrix composite multi-directional laminates without open-hole (English PDF)
聚合物基复合材料多向层合板无开孔压缩试验方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2022
Implementation date
April 1, 2023
Scope
GB/T 41955-2022 is the English-translated version of 聚合物基复合材料多向层合板无开孔压缩试验方法.
GB/T 41955-2022 is the Chinese national test method for the compressive properties of polymer matrix composite multi-directional laminates with no hole in them.
It describes the principle, the test equipment, the specimens, the use of the test fixture, strain gauges and extensometers, the test procedure, the treatment of results and the test report.
The specimen, without a centre hole, is clamped with its fixture in the testing machine chuck so that the gauge section is loaded uniformly; deformation is read with an extensometer or strain gauges whose relative error should not exceed ±1%, the extensometer having a 25 mm gauge length and a 0 mm to 2.5 mm range.
It applies to continuous fibre reinforced symmetrical and balanced multi-directional laminates. Issued on 30 December 2022, it has applied since 1 April 2023.
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Document preview — GB/T 41955-2022
National Standard of the People's Republic of China
- ICS
- 83.120
- Classification
- Q 23
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Principles
- 5 Test equipment
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.
1 Scope
This document describes the principle, test equipment, test specimens, and test strips of the non-opening compression test method for polymer matrix composite multidirectional laminates.
Use methods, test procedures, test results and test reports of components, strain gauges and extensometers.
This document is applicable to the determination of the non-opening compressive properties of continuous fiber reinforced polymer matrix composites symmetrical and balanced multidirectional laminates. make up For the determination of the compressive properties of the woven composite flat plate without openings, reference can be made.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 1446 General Rules for Test Methods of Properties of Fiber Reinforced Plastics
GB/T 3961 Terminology of fiber reinforced plastics
3 Terms and Definitions
The following terms and definitions defined in GB/T 3961 apply to this document.
3.1 Bending percentage
The bending deformation of the sample is characterized by the difference in the indication value of a pair of longitudinal strain gauges pasted back to back at the center of the front and rear surfaces of the sample during the test. degree of shape.
4 Principles
A multi-directional laminate sample without a center hole is used, and the sample/fixture assembly is clamped in the chuck of the testing machine for loading, so that the working section of the sample is uniform. Evenly loaded, the compressive properties of multi-directional laminates are obtained.
5 Test equipment
5.1 Testing machine
The testing machine shall comply with the provisions of GB/T 1446.
5.2 Deformation and measuring device
5.2.1 Use extensometer or strain gauge to measure deformation, the relative error should not exceed ±1%, and meet the following requirements.
a) Extensometer. gauge length is 25mm, measuring range is 0mm~2.5mm;
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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