Cryogenic interface strength testing method for carbon fiber composite materials based on crack propagation representative volume model

QIAN Wenxin; GAO Weijian; ZHU Bin; YIN Bo; NIU Yinjie; ZHANG Xiaowen

doi:10.16579/j.issn.1001.9669.2026.05.011

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Cryogenic interface strength testing method for carbon fiber composite materials based on crack propagation representative volume model

·Fatigue·Damage·Fracture·Failure Analysis· | 更新时间：2026-05-19

- Cryogenic interface strength testing method for carbon fiber composite materials based on crack propagation representative volume model
- Journal of Mechanical Strength Vol. 48, Issue 5, Pages: 90-96(2026)
- 作者机构：
  
  1.国家能源集团永州发电有限公司，永州 425000
  2.沈阳飞机设计研究所，沈阳 110066
  3.北京石油化工学院材料科学与工程学院，北京 102627
  4.大连理工大学力学与航空航天学院，大连 116023
- 作者简介：
  
  ZHANG Xiaowen, E-mail: zhangxwdut@163.com
- 基金信息：
  
  National Key R&D Program Intergovernmental International Science and Technology Innovation Cooperation Special Project(2021YFE0115400)
- DOI：10.16579/j.issn.1001.9669.2026.05.011
  CLC： TB302;TB332
- Received：08 September 2024，
  
  Revised：2024-10-13，
  
  Published：15 May 2026
- 稿件说明：
移动端阅览
钱文新，高维健，朱斌，等. 基于裂纹扩展代表体元模型的碳纤维复合材料低温界面强度测试方法［J］. 机械强度，2026，48（5）：90-96.

QIAN Wenxin，GAO Weijian，ZHU Bin，et al. Cryogenic interface strength testing method for carbon fiber composite materials based on crack propagation representative volume model［J］. Journal of Mechanical Strength，2026，48（5）：90-96.
钱文新，高维健，朱斌，等. 基于裂纹扩展代表体元模型的碳纤维复合材料低温界面强度测试方法［J］. 机械强度，2026，48（5）：90-96. DOI： 10.16579/j.issn.1001.9669.2026.05.011.

QIAN Wenxin，GAO Weijian，ZHU Bin，et al. Cryogenic interface strength testing method for carbon fiber composite materials based on crack propagation representative volume model［J］. Journal of Mechanical Strength，2026，48（5）：90-96. DOI： 10.16579/j.issn.1001.9669.2026.05.011.

摘要

目的

针对碳纤维复合材料在液氢等深低温环境下界面强度难以直接准确测试的问题，提出了一种基于裂纹扩展行为反演界面剪切强度的间接测试方法，旨在为低温复合材料结构的强度设计与可靠性评估提供支撑。

方法

首先，建立了纤维、基体与界面之间断裂能释放率关系的裂纹扩展代表体元模型；其次，通过开展T700/TDE-85M复合材料单向层合板在不同温度（-196~25 ℃）下的纵向拉伸试验，获取了断面形貌；然后，对裂纹扩展路径（包括偏转、穿透及其组合模式）的出现概率进行了统计分析；最后，基于上述模型与试验数据，反演推导获得了界面剪切强度。

结果

研究表明，该方法在-196~25 ℃温度范围内测得的界面剪切强度，与单丝拔出法的测试结果误差在±10%以内，验证了模型的有效性。同时发现，界面强度随温度降低而呈下降趋势，且低温环境下裂纹更倾向于发生界面偏转。

Abstract

Objective

To address the challenge of directly and accurately measuring the interfacial strength of carbon fiber composites in cryogenic environments such as liquid hydrogen

an indirect testing method based on inverse identification of interfacial shear strength through crack propagation behavior was proposed

aiming to support the strength design and reliability assessment of cryogenic composite structures.

Methods

Firstly

a representative volume element model for crack propagation was established

characterizing the relationship of energy release rate among the fiber

matrix

and interface. Secondly

longitudinal tensile tests of the T700/TDE-85M composite unidirectional laminates were conducted at different temperatures (from -196 ℃ to 25 ℃) to obtain fracture surface morphologies. Then

the occurrence probabilities of crack propagation paths (including deflection

penetration

and their combination) were statistically analyzed. Finally

the interfacial shear strength was inversely identified based on the aforementioned model and test data.

Results

The research demonstrates that the interfacial shear strength measured by this method within the temperature range of -196 ℃ to 25 ℃ shows errors within ±10% compared to results from the single-fiber pull-out method

verifying the model's validity.Concurrently

it was found that the interfacial strength decreases with decreasing temperature

and cracks are more prone to interface deflection at low temperatures.

关键词

Keywords

references

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