The Influence of Repair Techniques on the Residual Strength of Surface-Scratched Composite Laminates: Experimental and Numerical Investigation

IF 3.9 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Applied Composite Materials Pub Date : 2026-09-24 DOI:10.1007/s10443-026-10542-6

Zhiyong Ma, Yitao Wu, Guanhua Wang, Yapan Zhao, Jing Cao, Wen Jiang, Mingze Ma

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引用次数: 0

Abstract

A study was conducted on the residual strength of asymmetrical composite laminates with surface scratch damage after repair. Three types of patched and scarfed repair specimens were tested under quasi-static tensile loading to compare the effectiveness of different repair techniques. A numerical simulation model was established to analyze the repaired specimens, and its accuracy was validated through comparison with experimental results. To further investigate the influence of repair parameters on scarf repair performance, the ultimate loads under different overlap widths were calculated, and the optimal strength recovery factors corresponding to various laminate thicknesses and overlap configurations were obtained. The results indicate that the patch repair technique provides effective restoration for surface scratch damage, generally achieving strength recovery factors above 90% under the investigated conditions. Moreover, the single-lap scarf configuration outperforms the double-lap scarf configuration. However, as the laminate thickness increases, the repair efficiency tends to decrease.

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修复工艺对表面划伤复合材料层合板残余强度的影响：实验与数值研究

研究了具有表面划伤损伤的非对称复合材料层合板修复后的残余强度。在准静态拉伸荷载下，对三种类型的补片修复试件进行了试验，比较了不同修复方法的有效性。建立了数值模拟模型，对修复后的试件进行了分析，并与实验结果进行了对比，验证了模型的准确性。为了进一步研究修复参数对围巾修复性能的影响，计算了不同重叠宽度下的极限载荷，得到了不同层压厚度和重叠配置对应的最优强度恢复系数。结果表明，修补技术可以有效修复表面划伤损伤，在研究条件下，强度恢复系数一般在90%以上。此外，单圈围巾配置优于双圈围巾配置。然而，随着层压厚度的增加，修复效率有降低的趋势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Composite Materials 工程技术-材料科学：复合

CiteScore

4.20

自引率

4.30%

发文量

审稿时长

1.6 months

期刊介绍： Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes. Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.