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An experimental investigation on low-velocity impact response of a novel corrugated sandwiched composite structure

机译:新型瓦楞夹层复合结构的低速冲击响应的实验研究

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摘要

This research is geared towards the improvement of the dynamic response of the corrugated sandwiched composite structures under low-velocity impact. A novel glass fibre reinforced double-corrugated sandwiched composite (DCSC) structure was designed and was manufactured by using a vacuum assisted resin infusion (VARI) technique. The lattice core of the DCSC was formed by crosslinked composites as reinforced layers and PVC foam blocks as energy absorption components. The dynamic response of the proposed sandwiched composite structures on different locations was evaluated through low-velocity drop-weight impact tests and was compared to that of traditional single-corrugated sandwiched composite (SCSC) structures. Finally, the optical microscopy and mu-CT technique were utilized to explore failure mechanisms and damage affected zone within the specimens. The results indicated that the maximum impact load and the energy absorption capability before the structural failure of the DSCS structure were significantly improved combined with a lower indentation comparing to the traditional SCSC configuration only with a slight weight increase. No severe damage was observed given low impact energy. Fibre fracture, foam rupture and face-to-foam debonding became dominant while the energy was increased.
机译:该研究旨在改善低速冲击下瓦楞夹层复合结构的动态响应。设计了一种新型玻璃纤维增​​强的双瓦楞夹层复合材料(DCSC)结构,并通过使用真空辅助树脂输注(VARI)技术制造。 DCSC的晶格芯通过交联复合材料形成,作为增强层和PVC泡沫块作为能量吸收成分。通过低速滴重建试验评估所提出的夹层复合结构在不同位置的动态响应,并与传统的单波纹夹层复合(SCSC)结构进行比较。最后,利用光学显微镜和MU-CT技术来探索试样内的失效机制和受损影响区域。结果表明,在DSC结构结构失败之前的最大冲击载荷和能量吸收能力显着改善,与传统的SCSC配置相比,与传统的SCSC配置相比只能增加。没有对低冲击能量观察到严重的损害。纤维骨折,泡沫破裂和面对泡沫剥离变得显着,而能量增加。

著录项

  • 来源
    《Composite Structures》 |2020年第11期|112676.1-112676.13|共13页
  • 作者单位

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Wuhan Univ Technol Sch Sci Hubei Key Lab Theory & Applicat Adv Mat Mech Wuhan 430070 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China|Beijing Inst Technol Beijing Key Lab Lightweight Multifunct Composite Inst Adv Struct Technol Beijing 100081 Peoples R China;

  • 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

    Polymer-matrix composites (PMCs); Injection moulding; Impact behaviour; Fractography; mu-CT technology;

    机译:聚合物 - 基质复合材料(PMC);注塑;影响行为;Fractography;MU-CT技术;

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