• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Mechanical properties of 3-D printed truss-like lattice biopolymer non-stochastic structures for sandwich panels with natural fibre composite skins
【24h】

Mechanical properties of 3-D printed truss-like lattice biopolymer non-stochastic structures for sandwich panels with natural fibre composite skins

机译：具有天然纤维复合表层的3-D打印桁架状晶格生物聚合物非随机结构的力学性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A full mechanical characterisation of three types of 3-D printed lattice cores was performed to evaluate the feasibility of using additive manufacturing (AM) of lightweight polymer-based sandwich panels for structural applications. Effects of the shape of three selected lattice structures on the compression, shear and bending strength has been experimentally investigated. The specimens tested were manufactured with an open source fused filament fabrication-based 3-D printer. These sandwich structures considered had skins made of poly-propylene (PP)-flax bonded to the polylactic acid (PLA) lattice structure core using bi-component epoxy adhesive. The PP-flax and the PLA core structures were tested separately as well as bonded together to evaluate the structural performance as sandwich panels. The compression tests were carried out to assess the in-plane and out of plane stiffness and strength by selecting a representative number of cells. Shear band and plastic hinges were observed during the in-plane tests. The shear and three-point bending tests were performed according to the standard to ensure repeatability. The work has provided an insight into the failure modes of the different shapes, and the force-displacement history curves were linked to the progressive failure mechanisms experienced by the structures. Overall, the results of the three truss-like lattice biopolymer non-stochastic structures investigated have indicated that they are well suited to be used for potential impact applications because of their high-shear and out of the plane compression strength. These results demonstrate the feasibility of AM technology in manufacturing of lightweight polymer-based sandwich panels for potential structural uses.
机译：对三种类型的3-D打印晶格芯进行了完整的机械表征，以评估将轻质聚合物基夹芯板用于结构应用的增材制造（AM）的可行性。实验研究了三种选定晶格结构的形状对压缩，剪切和弯曲强度的影响。测试的标本是使用基于开源熔丝制造的3-D打印机制造的。所考虑的这些夹心结构具有由聚丙烯（PP）-亚麻制成的表皮，该表皮使用双组分环氧粘合剂与聚乳酸（PLA）晶格结构核结合。 PP-亚麻和PLA芯结构分别进行了测试并结合在一起，以评估其作为夹芯板的结构性能。通过选择代表性的单元数量，进行压缩测试以评估平面内和平面外的刚度和强度。在平面测试中观察到剪切带和塑料铰链。根据标准进行了剪切和三点弯曲测试，以确保可重复性。这项工作提供了对不同形状的破坏模式的洞察力，力-位移历史曲线与结构所经历的渐进破坏机制相关。总体而言，研究的三种桁架状晶格生物聚合物非随机结构的结果表明，它们具有高剪切力和平面外抗压强度，非常适合用于潜在的冲击应用。这些结果证明了增材制造技术在制造潜在结构用途的基于聚合物的轻质夹芯板中的可行性。

著录项

  • 来源
    《Composite Structures》 |2019年第4期|220-230|共11页
  • 作者

    Azzouz Lyes; Chen Yong; Zarrelli Mauro; Pearce Joshua M.; Mitchell Leslie; Ren Guogang; Grasso Marzio;

  • 作者单位

    Univ Hertfordshire, Sch Engn & Technol, Automot Mech & Mechatron Engn Div, Hatfield, Herts, England;

    Univ Hertfordshire, Sch Engn & Technol, Automot Mech & Mechatron Engn Div, Hatfield, Herts, England;

    Natl Res Council Italy CNR, IPCB, Rome, Italy;

    Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA|Aalto Univ, Sch Elect Engn, Dept Elect & Nanoengn, Espoo, Finland;

    Univ Hertfordshire, Sch Engn & Technol, Automot Mech & Mechatron Engn Div, Hatfield, Herts, England;

    Univ Hertfordshire, Sch Engn & Technol, Automot Mech & Mechatron Engn Div, Hatfield, Herts, England;

    Univ Hertfordshire, Sch Engn & Technol, Automot Mech & Mechatron Engn Div, Hatfield, Herts, England;

  • 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

    Natural fibre composites; Lattice structures; PLA; Sandwich structure; Stochastic structures; Biopolymers;

    机译：天然纤维复合材料;晶格结构;PLA;三明治结构;随机结构;生物聚合物;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号