Collective indentation as a novel strategy for mechanical palpation tomography

Ivan I. Argatov, Xiaoqing Jin*, Leon M. Keer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The method of mechanical (or robotic) palpation tomography assumes the use of a rigid indenter for in vivo detecting the presence of tissue lesions by the quasi-static contact probe inspection of the surface of the human body. The interpretation of the indentation data requires the inverse solution to contact problems for inhomogeneous substrates. A particular interest has been drawn to quantitative and qualitative analysis of the deformation behavior of a homogeneous elastic substrate with a spherical inclusion under the action of a rigid probe on the substrate surface. In the present paper, using a first-order perturbation-based asymptotic model of multiple contact, it is shown that the indentation tomography problem can be solved in a more efficient way if a system of indenters is simultaneously employed for performing the mechanical palpation diagnostics.

Original languageEnglish (US)
Article number104063
JournalJournal of the Mechanics and Physics of Solids
Volume143
DOIs
StatePublished - Oct 2020

Keywords

  • Indentation tomography
  • Mechanical palpation
  • Moduli-perturbation approach
  • Spherical inhomogeneity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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