Investigations on the influence of notched z-pins on the mechanical properties of carbon-fiber reinforced plastics
缺口Z型销对碳纤维增强塑料力学性能的影响研究
基本信息
- 批准号:398803737
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2018
- 资助国家:德国
- 起止时间:2017-12-31 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Fiber reinforced plastics (FRP) offer excellent mechanical properties regarding the fiber direction due to their microstructural construction of load-bearing fibers and shaping matrix. By contrast, a structure made of FRP loaded perpendicular to the laminate plane exhibits inferior mechanical properties, making it susceptible to delamination, e.g. due to interlaminar shear or impact stresses. The insertion of z-pins through the thickness of polymer matrix composites has been found to be a promising and low-cost method to enhance the interlaminar shear strength and reduce the mentioned vulnerability to delamination. Z-pins are needle-shaped, usually round bars, with diameters of typically 0.1-1.0 mm, and consist of materials with a high stiffness and strength, such as steel, titanium or carbon fiber reinforced plastics (CFRP). In conjunction with pre-impregnated semi-finished products (prepregs), the z-pinning technique is the most commonly used method for through-thickness reinforcement of FRP. Numerous studies have shown that the z-pinning is a very effective method to increase the damage tolerance of FRP. The aim of this project is the further increase of the effectiveness of z-pins by the application of a surface structure via ultra-short laser pulses and thus the creation of a form closure between the pins and laminate. Based on internal preliminary work, the influence of different surface structures on the mechanical properties of carbon fiber reinforced plastics and an optimal surface geometry should be determined.
纤维增强塑料(FRP)由于其承载纤维和成型基体的微观结构构造,在纤维方向上提供优异的机械性能。相比之下,由垂直于层压板平面加载的FRP制成的结构表现出较差的机械性能,使其易于分层,例如由于层间剪切或冲击应力。通过聚合物基复合材料的厚度插入z-销已被发现是一种有前途的和低成本的方法,以提高层间剪切强度和减少所提到的分层的脆弱性。Z销是针形的,通常是圆棒,直径通常为0.1-1.0 mm,并且由具有高刚度和强度的材料组成,例如钢、钛或碳纤维增强塑料(CFRP)。结合预浸渍半成品(预浸料),z钉扎技术是FRP全厚度加固最常用的方法。大量的研究表明,z钉扎是提高FRP损伤容限的一种非常有效的方法。该项目的目的是通过超短激光脉冲应用表面结构,从而在销和层压板之间形成闭合,进一步提高z销的有效性。基于内部前期工作,应确定不同表面结构对碳纤维增强塑料力学性能的影响以及最佳表面几何形状。
项目成果
期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Compression properties of z-pinned carbon-fibre/epoxy laminates reinforced with circumferentially notched z-pins
- DOI:10.1016/j.compscitech.2020.108486
- 发表时间:2021-01
- 期刊:
- 影响因子:9.1
- 作者:A. Knopp;G. Scharr
- 通讯作者:A. Knopp;G. Scharr
Tensile Properties of Z-Pin Reinforced Laminates with Circumferentially Notched Z-Pins
- DOI:10.3390/jcs4020078
- 发表时间:2020-06-01
- 期刊:
- 影响因子:3.3
- 作者:Knopp, Andre;Scharr, Gerhard
- 通讯作者:Scharr, Gerhard
Experimental Investigations on the Influence of Different Notch Designs on the Pullout Performance of Circumferentially Notched Z-pins
不同切口设计对周向切口Z销拉拔性能影响的实验研究
- DOI:10.3390/jcs4020067
- 发表时间:2020
- 期刊:
- 影响因子:3.3
- 作者:Scharr
- 通讯作者:Scharr
Experimental investigations on the influence of notch definition on the pullout performance of circumferentially notched z-pins
缺口定义对周向缺口z型销拉拔性能影响的实验研究
- DOI:10.1016/j.compstruct.2020.112527
- 发表时间:2020
- 期刊:
- 影响因子:6.3
- 作者:Scharr
- 通讯作者:Scharr
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Professor Dr.-Ing. Gerhard Scharr其他文献
Professor Dr.-Ing. Gerhard Scharr的其他文献
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{{ truncateString('Professor Dr.-Ing. Gerhard Scharr', 18)}}的其他基金
Behaviour of rectangular z-pins for translaminar reinforcement of fiber reinforced plastics under dynamic loading
动态载荷下纤维增强塑料跨层增强矩形 z 销的行为
- 批准号:
210369099 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Research Grants
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