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GB/T 48235-2026Carbon fiber reinforced composites - Determination of the mode I interlaminar fracture toughness under high loading rate - Hopkinson bar method (English PDF)

碳纤维增强复合材料高加载速率下I型层间断裂韧性的测定霍普金森杆法

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Also coversGB/T48235-2026 + GBT48235-2026

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 28, 2026

Implementation date

April 1, 2027

Scope

GB/T 48235-2026 is the English-translated version of 碳纤维增强复合材料高加载速率下I型层间断裂韧性的测定霍普金森杆法.

Composite structures can see very fast loading in impacts and similar events, and this standard describes a way to determine mode I interlaminar fracture toughness of carbon fibre reinforced composites at a high loading rate using the Hopkinson bar method. It will mostly be used by materials testing laboratories, research institutes, aerospace and automotive composite engineers and manufacturers developing laminates that must resist delamination under dynamic loads.

Interlaminar fracture toughness describes how well layers resist separating, and testing at high rates complements the more familiar quasi-static measurements. The document was issued on 28 September 2026 and takes effect on 1 April 2027. It is a recommended national standard published under the Standardization Administration of China. Our records show no earlier edition that it replaces and no adoption of an international standard, so laboratories evaluating composite materials for the Chinese market may treat it as a new reference method.

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Document preview — GB/T 48235-2026

National Standard of the People's Republic of China

ICS: 59.100.20
Classification: Q 53

Issued by: State Administration for Market Regulation; Standardization Administration of China

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

GB/T 48235-2026 is a recommended national standard (GB/T) of the People's Republic of China, issued on 28 September 2026 by the State Administration for Market Regulation and the Standardization Administration of China, with effect from 1 April 2027.

It is under the responsibility of the Standardization Administration of China.

Classification: ICS 59.100.20; CCS Q 53.

1 Scope

Remaining clauses in the full document

2 Normative references
3 Terms and definitions

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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.

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