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GB/T 45471-2025 English PDF

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US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45471-2025: Test method for mode III interlaminar fracture toughness of carbon fiber reinforced composite materials - Edge crack torsion method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45471-2025	199	Add to Cart	3 days	Test method for mode III interlaminar fracture toughness of carbon fiber reinforced composite materials - Edge crack torsion method	Valid

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Basic data

Standard ID: GB/T 45471-2025 (GB/T45471-2025)
Description (Translated English): Test method for mode III interlaminar fracture toughness of carbon fiber reinforced composite materials - Edge crack torsion method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q53
Classification of International Standard: 59.100.20
Word Count Estimation: 10,179
Date of Issue: 2025-03-28
Date of Implementation: 10/1/2025
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45471-2025: Test method for mode III interlaminar fracture toughness of carbon fiber reinforced composite materials - Edge crack torsion method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 59.100.20 CCSQ53 National Standard of the People's Republic of China Mode III interlaminar fracture toughness of carbon fiber reinforced composites Determination of edge crack torsion method Released on 2025-03-28 2025-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

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. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Carbon Fiber Standardization Technical Committee (SAC/TC572). This document was drafted by. China Aircraft Strength Research Institute, Nanjing Fiberglass Research and Design Institute Co., Ltd., China Aviation Manufacturing Technology Research Institute Research Institute, Shenyang Aircraft Design and Research Institute of Aviation Industry Corporation of China, and Shanghai Qinyao Aviation Testing Technology Co., Ltd. The main drafters of this document are. Song Guibin, Li Lei, Wang Binwen, Duan Minge, Li Xiaolong, Xie Jiahui, Xiong Huafeng, Sui Xiaodong, Shi Fenghui, Ma Dan, Chen Xiangming, Si Kui, Tang Kun, and Song Nan. Mode III interlaminar fracture toughness of carbon fiber reinforced composites Determination of edge crack torsion method

1 Scope

This document describes the principle, test equipment, test specimens, test methods and test methods of carbon fiber reinforced composite material type III interlaminar fracture toughness test method. The test conditions and test steps are given, as well as the calculation formula and the writing content of the test report. This document is applicable to the determination of mode III interlaminar fracture toughness of carbon fiber reinforced composite laminates.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 1446 General principles for test methods for properties of fiber reinforced plastics GB/T 3961 Terminology of fiber reinforced plastics GB/T 40724 Terminology of carbon fiber and its composite materials

3 Terms and definitions

The terms and definitions defined in GB/T 3961 and GB/T 40724 and the following apply to this document. 3.1 Compliance The degree to which a structure deforms under external forces. 3.2 The rate of change of strain energy of a cracked object as the crack propagates. [Source. GB/T 40724-2021, 6.77] 3.3 GⅢC The critical value of strain energy release rate when delamination crack starts to propagate under mode III tearing load. Note. Mode III interlaminar fracture toughness is measured in joules per square meter (J/m2). [Source. GB/T 40724-2021, 6.86]

4 Principle

The load is applied to the edge-cut specimen in the form of torsion loading (see Figure 1), so that the specimen is subjected to the τZX shear stress (X direction on the ZX plane). The delamination expansion occurs under the action of shear stress, thereby obtaining the mode III interlaminar fracture toughness (GⅢC) of carbon fiber reinforced composite materials. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45471-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45471-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45471-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45471-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.