Model and Maximal Pull-out Force of Helicoidal Fiber Structure in the Underpinnings of Tumblebug Cuticle
The observation of scanning electron microscope (SEM) on the cuticle of Tumblebug shows that the cuticle is a kind of biocomposite consisting of chitin-fibers and collagen protein matrix. The observation also shows that there are many underpinnings in the cuticle. The underpinnings are also a kind of biological composite consisting of chitin-fiber layers and collagen protein matrixes. More careful observation indicates that the chitin-fiber layers enwrap the core of the underpinnings forming a kind of helicoidal fiber structure. The maximal pull-out force of the helicoidal fiber structure, related to the fracture toughness of the underpinnings, is theoretically and experimentally investigated and compared with that of parallel fiber structure. It shows that the maximal pull-out force of the helicoidal fiber structure is larger than that of the parallel fiber structure, which gives profitable information for the design of man-made high-performance composites and composite structures.
Tumblebug cuticle chitin fiber underpinning helicoidal fiber structure maximal pull-out force
Bin Chen Dagang Yin Quan Yuan Ji Luo Jinghong Fan
College of Resource and Environment Science, Chongqing University, Chongqing 400044, China Key Labor College of Resource and Environment Science, Chongqing University, Chongqing 400044, China Division of Mechanical Engineering, Alfred University, Alfred, N Y 14802, USA
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
427-431
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）