Scholarlink

This study investigates the quasi-static indentation and post-fire behavior of foam-core glass fiber-reinforced polymer (GFRP) sandwich composites modified with varying weight fractions (0, 1, and 2 wt.%) of magnesium hydroxide as a flame-retardant filler. Experimental results demonstrated that the incorporation of magnesium hydroxide significantly enhanced both mechanical performance and fire resistance. The peak load increased from 0.383 kN to 0.433 kN by including 2 wt.% additive prior to fire exposure, and further to 0.570 kN following fire exposure. Energy absorption exhibited a similar trend, and rising from 4.25 J to 4.994 J by including 2 wt.% magnesium hydroxide in the composite. Moreover, the magnesium hydroxide included specimen showed an energy absorption of 5.662 J after fire exposure. These findings confirm that incorporating magnesium hydroxide provides optimal structural integrity and thermal protection, positioning it as a promising filler for GFRP sandwich composites intended for fire-critical structural applications.

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

Quasi-Static Indentation Response of Foam Core Sandwich Structures Including Fire-Retardant Additives

  • 章节

  • 发表日期：

    2026年

查看全文
  • S. Gipson Daniel,
  • N. Fahima Banu,
  • S. Mohana Sivakrishnan,
  • Chandrasekar Muthukumar,
  • Jeyanthi Subramanian,
  • J. Sangilimuthukumar,
  • T. Senthil Muthu Kumar,
  • K. Senthilkumar

摘要

This study investigates the quasi-static indentation and post-fire behavior of foam-core glass fiber-reinforced polymer (GFRP) sandwich composites modified with varying weight fractions (0, 1, and 2 wt.%) of magnesium hydroxide as a flame-retardant filler. Experimental results demonstrated that the incorporation of magnesium hydroxide significantly enhanced both mechanical performance and fire resistance. The peak load increased from 0.383 kN to 0.433 kN by including 2 wt.% additive prior to fire exposure, and further to 0.570 kN following fire exposure. Energy absorption exhibited a similar trend, and rising from 4.25 J to 4.994 J by including 2 wt.% magnesium hydroxide in the composite. Moreover, the magnesium hydroxide included specimen showed an energy absorption of 5.662 J after fire exposure. These findings confirm that incorporating magnesium hydroxide provides optimal structural integrity and thermal protection, positioning it as a promising filler for GFRP sandwich composites intended for fire-critical structural applications.