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GB/T 28891-2012 English PDF

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GB/T 28891-2012: Fibre-reinforced plastic composites -- Determination of mode Ⅰ interlaminar fracture toughness GⅠC for unidirectionally reinforced materials
Status: Valid
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GB/T 28891-2012English494 Add to Cart 3 days [Need to translate] Fibre-reinforced plastic composites -- Determination of mode Ⅰ interlaminar fracture toughness GⅠC for unidirectionally reinforced materials Valid GB/T 28891-2012

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Basic data

Standard ID GB/T 28891-2012 (GB/T28891-2012)
Description (Translated English) Fibre-reinforced plastic composites -- Determination of mode �� interlaminar fracture toughness G��C for unidirectionally reinforced materials
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q23
Classification of International Standard 83.120
Word Count Estimation 25,241
Quoted Standard GB/T 2918-1998; ISO 1268-10; ISO 1268-11; ISO 1268-1; ISO 1268-2; ISO 1268-3; ISO 1268-4; ISO 1268-5; ISO 1268-6; ISO 1268-7; ISO 1268-8; ISO 1268-9; ISO 4588-1995; ISO 5893
Adopted Standard ISO 15024-2001, IDT
Regulation (derived from) National Standards Bulletin 2012 No. 28
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the double cantilever beam (DCB) specimen was measured unidirectional fiber reinforced plastic composite material I interlaminar fracture toughness (critical energy release rate) G �� C approach. This standard applies to the carbon

GB/T 28891-2012: Fibre-reinforced plastic composites -- Determination of mode Ⅰ interlaminar fracture toughness GⅠC for unidirectionally reinforced materials


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Fibre-reinforced plastic composites. Determination of mode Ⅰinterlaminar fracture toughness GⅠC for unidirectionally reinforced materials ICS 83.120 Q23 National Standards of People's Republic of China Unidirectional fiber reinforced plastic composite materials reinforced materials Inter Ⅰ interlaminar fracture toughness determination of GⅠC (ISO 15024.2001, IDT) Issued on. 2012-11-05 2013-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Principle 2 5 5 Equipment 6 Sample 6 Number of samples 87 Conditioning 8 8 Step 9 8 Test 10 GⅠC calculation 9 11 Precision 13 12 14 Test Report Appendix A (normative) Preparation and bonding load block or piano hinge 15 Annex B (informative) recommended test guideline 16 Annex C (informative) Recommended test results Table 18 References 21

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the translation method identical with ISO 15024.2001 "unidirectional fiber reinforced plastic composite materials reinforced materials Ⅰ type layer interrupted GⅠC fracture toughness determination. " Correspondence between the consistency of the standards of international documents and normative references of the following documents. --- GB/T 17200-2008 Rubber plastic tensile, compression, bending test machine technical requirements (ISO 5893.2002, IDT). The standard proposed by China Building Materials Federation. The standard fiber-reinforced plastic by the National Standardization Technical Committee (SAC/TC39) centralized. This standard was drafted. Beijing FRP Research and Design Institute, China Aircraft Strength Research Institute. The main drafters of this standard. Peng Xing Choi, Yang Shengchun, Zhang Liping, fairy Baojun, Liang Jiaming. Unidirectional fiber reinforced plastic composite materials reinforced materials Inter Ⅰ interlaminar fracture toughness determination of GⅠC

1 Scope

This standard specifies the determination between the unidirectional fiber reinforced plastic composite material Ⅰ interlaminar fracture toughness with a double cantilever beam (DCB) specimens (Critical Energy release rate) GⅠC approach. This standard applies to the carbon fiber reinforced and glass fiber reinforced thermoset and thermoplastic composites.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2918-1998 standard plastic sample conditioning and environmental tests (idt ISO 291.1997) ISO 1268 (all parts) of fiber reinforced plastics test plates Preparation (Fibre-reinforcedplastics-Methodsof producingtestplates) ISO 4588.1995 adhesive metal surface preparation guide (Adhesives-Guidelinesforthesurfacepreparationof metals) ISO 5893 Rubber and plastics testing machine tensile, bending and compression type (constant velocity) Technical Specifications (Rubberandplastics testequipment-Tensile, flexuralandcompressiontype (constantrateoftraverse) -Description)

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Inter Ⅰ interlaminar fracture toughness modeⅠinterlaminarfracturetoughness The critical energy release rate criticalenergyreleaserate GⅠC In type Ⅰ open load, unidirectional fiber reinforced polymer matrix composites laminates delamination crack initiation and expansion of the impedance. NOTE. to measure with J/m2. 3.2 Ⅰ crack crack modeⅠcrackopening By the vertical load applied to the layered double cantilever beam specimen plane caused crack initiation mode, as shown in Figure 1. 3.3 NL point NLpoint Deviation from linearity point load displacement curve shown in Figure 2. 3.4 VIS point VISpoint At the edge of the specimen to the layered visual starting point, marked on the load-displacement curve in Figure 2.

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