Utilisation of a wrinkled film-based structure for the sensing measurement of a vibro-impact capsule robot
Bi, H; Tian, J; Zhang, B; et al.Wang, B; Liu, Y
Date: 19 October 2023
Article
Journal
Meccanica
Publisher
Springer
Publisher DOI
Abstract
According to a pre-strain strategy, a wrinkled structure for measuring the contact pressure between
the intestinal wall and the vibro-impact capsule robot is proposed for the potential application of early
bowel cancer detection. An analytical model of this wrinkled structure is established by using an energy
method. Based on Hertz ...
According to a pre-strain strategy, a wrinkled structure for measuring the contact pressure between
the intestinal wall and the vibro-impact capsule robot is proposed for the potential application of early
bowel cancer detection. An analytical model of this wrinkled structure is established by using an energy
method. Based on Hertz theory, a theoretical expression for the elastic modulus of bowel tissue and
the amplitude of this structure, so the current generated, is obtained. It is found that the sensitivity
of the structure is dependent on its wrinkled amplitude. Our simulation results show that, for a static
capsule, the greater the contact pressure between the wrinkled structure and the capsule is, the greater
the current of this mechanism is generated, indicating the bowel tissue becomes stiffer. For a dynamic
capsule, our simulation results reveal that the faster the average velocity of the capsule is, the greater the
current is generated. These relationships are explained by modelling the hoop pressure of the intestine
on the capsule robot validated via finite element analysis. The findings of this paper can provide design
guidelines for fabricating the proposed mechanism integrated onto the vibro-impact capsule robot for
diagnostic and tracking purposes.
Engineering
Faculty of Environment, Science and Economy
Item views 0
Full item downloads 0