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Impact response of shear thickening fluid filled polyurethane foam core sandwich composites

机译：剪切增稠液填充聚氨酯泡沫芯夹芯复合材料的冲击响应

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摘要

Up to date, a considerable experimental work has been performed to reveal the impact behavior of polymer foam core sandwich composites. Though, a few attempts have been made to integrate shear thickening fluids (STF) in closed cell rigid polyurethane foams (PU). STF possess a unique rheological property providing a rapid response to the structure against impact loads. The effects of STF on polymer foam cell morphology, thermal stability, and mechanical performance are investigated with advanced characterization techniques. The drop-weight impact test results of sandwich composites show that STF filled PU foam cores exhibit a higher energy absorption rate compared to its neat counterpart. Specific compressive strength and impact energy absorbing capability of STF filled PU foam cores increase with respect to the higher cell thickness-to-length ratios and higher cell densities achieved with STF inclusion. In addition, STF filled PU foam core sandwich composites are found to respond with lower damage width compared to neat PU foams.
机译：迄今为止，已经进行了相当大的实验工作，以揭示聚合物泡沫芯夹层复合材料的影响行为。虽然，已经尝试一定的尝试将剪切增稠液（STF）整合在闭孔刚性聚氨酯泡沫（PU）中。 STF具有独特的流变性质，可快速响应对抗载荷的结构。采用先进的表征技术研究了STF对聚合物泡沫细胞形态，热稳定性和机械性能的影响。夹层复合材料的滴重量撞击试验结果表明，与其整齐的对应物相比，STF填充的PU泡沫芯表现出更高的能量吸收率。 STF填充PU泡沫芯的特定抗压强度和冲击能量吸收能力相对于较高的细胞厚度与长度比和通过STF夹杂物实现的更高细胞密度增加。此外，与整齐的PU泡沫相比，发现STF填充的PU泡沫芯夹芯复合材料较低的损伤宽度。

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  • 来源
    《Composite Structures》 |2020年第7期|112171.1-112171.8|共8页
  • 作者

    Caglayan Cigdem; Osken Ipek; Ataalp Altug; Turkmen Halit S.; Cebeci Hulya;

  • 作者单位

    Istanbul Tech Univ Fac Aeronaut & Astronaut Istanbul 34469 Turkey|Istanbul Tech Univ ITU Aerosp Res Ctr Istanbul 34469 Turkey;

    Istanbul Tech Univ Fac Aeronaut & Astronaut Istanbul 34469 Turkey|Istanbul Tech Univ ITU Aerosp Res Ctr Istanbul 34469 Turkey;

    Istanbul Tech Univ Fac Aeronaut & Astronaut Istanbul 34469 Turkey;

    Istanbul Tech Univ Fac Aeronaut & Astronaut Istanbul 34469 Turkey;

    Istanbul Tech Univ Fac Aeronaut & Astronaut Istanbul 34469 Turkey|Istanbul Tech Univ ITU Aerosp Res Ctr Istanbul 34469 Turkey;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sandwich composites; Polyurethane foam; Shear thickening fluids; Rheology; Impact;

    机译：夹层复合材料;聚氨酯泡沫;剪切增稠液;流变学;影响;

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