Scholarlink

<p>Composite materials are extensively used in automotive, aerospace, and medical industries. However, replacing damaged components made from these materials is often expensive due to high production costs, making repair a more economical option. This study examines the mechanical performance of damaged composite specimens repaired with adhesive patches under various loading conditions. Three types of damage were studied: cracks, crack-induced delamination, and holes, each repaired with different patch configurations. Cracked specimens were tested under Mode I, Mode II, and Mixed-mode I/II loading, while specimens with crack-delamination and hole damage were tested under Mode I loading. Results showed that cracked specimens repaired with 8-layer [0/90]<sub>s</sub> patches under Mode I loading had 98% improvement, 4-layered patches had 75% in Mixed-mode I/II, and 8-layered patches had 46% in Mode II. For delamination-crack damage, [45/−&#xa0;45]<sub>s</sub> patches provided 64% improvement, and for hole-damaged specimens, [0/90]<sub>s</sub> patches showed the maximum improvement. Statistical analysis using design of experiments (DOE) indicated that for cracked specimens, loading mode and fiber orientation angle in the patch are the most significant parameters.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Comprehensive Study on the Repair of Damaged Composite Structures with Adhesive-Bonded Patches in Mixed-Mode Loading Conditions

  • 期刊论文

  • 发表日期：

    2026年4月12日

查看全文
  • Mohammad Hajizadeh Akhteh Khaneh,
  • Bashir Behjat,
  • Reza Sarkhosh

摘要

Composite materials are extensively used in automotive, aerospace, and medical industries. However, replacing damaged components made from these materials is often expensive due to high production costs, making repair a more economical option. This study examines the mechanical performance of damaged composite specimens repaired with adhesive patches under various loading conditions. Three types of damage were studied: cracks, crack-induced delamination, and holes, each repaired with different patch configurations. Cracked specimens were tested under Mode I, Mode II, and Mixed-mode I/II loading, while specimens with crack-delamination and hole damage were tested under Mode I loading. Results showed that cracked specimens repaired with 8-layer [0/90]s patches under Mode I loading had 98% improvement, 4-layered patches had 75% in Mixed-mode I/II, and 8-layered patches had 46% in Mode II. For delamination-crack damage, [45/− 45]s patches provided 64% improvement, and for hole-damaged specimens, [0/90]s patches showed the maximum improvement. Statistical analysis using design of experiments (DOE) indicated that for cracked specimens, loading mode and fiber orientation angle in the patch are the most significant parameters.