Experimental study on the effects of shear stress on viscoelastic properties of the intestines

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	Experimental study on the effects of shear stress on viscoelastic properties of the intestines
	Li Jie 1; Bi XiaoNan 1; Zhang Ke 1; Zhang Cheng 2; Liu Hao 2
刊名	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
	2019
卷号	62 期号:6 页码:1028-1034
关键词	FRICTIONAL RESISTANCE CAPSULE ROBOT MODEL shear stress nonlinear viscoelastic property intestine loss factor negative gas adsorption
ISSN号	1674-7321
其他题名	Experimental study on the effects of shear stress on viscoelastic properties of the intestines
英文摘要	Shear deformation induced by shear stress is one of the major forms of interaction between the locomotion mechanism and the intestines. Relatively few experimental studies using locomotion mechanisms have been performed to investigate the viscoelastic property of intestines. There is a lack of reliable data regarding the relative movement between various locomotion mechanisms and the small intestine, and how that movement affects the measurement of shear displacement. In this work, a novel platform was constructed with two elaborately designed clamps that could securely fix both sides of an intestine sample using negative gas adsorption. The platform was also integrated with noncontact measuring equipment to record the thickness of the intestine sample. Subsequently, preservation measure was applied to porcine intestine, and multiple intestine samples were prepared and tested under strains of 20%, 50%, 80% and 100%. A five-element viscoelastic model that was fitted to multiple sets of data could accurately predict the biomechanical property of the intestines. Finally, a new criterion, the loss factor, was calculated with the parameters of the five-element model to represent the dynamic behavior of soft tissue, and it was used to verify the reliability and effectiveness of the experimental setup and results.
资助项目	[National Key R&D Program of China] ; [National Natural Science Foundation of China] ; [Open Fund of State Key Laboratory of Robotics of China]
语种	英语
CSCD记录号	CSCD:6516861
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/150687]
专题	金属研究所_中国科学院金属研究所
作者单位	1.沈阳建筑大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Li Jie,Bi XiaoNan,Zhang Ke,et al. Experimental study on the effects of shear stress on viscoelastic properties of the intestines[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2019,62(6):1028-1034.
APA	Li Jie,Bi XiaoNan,Zhang Ke,Zhang Cheng,&Liu Hao.(2019).Experimental study on the effects of shear stress on viscoelastic properties of the intestines.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,62(6),1028-1034.
MLA	Li Jie,et al."Experimental study on the effects of shear stress on viscoelastic properties of the intestines".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 62.6(2019):1028-1034.