Indentation technique for simultaneous estimation of young’s modulus and poisson’s ratio of soft tissues

Pong Chi Choi, Hang Yin Ling, Yongping Zheng

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

Abstract

Young’s modulus and Poisson’s ratio are the important parameters for representing the mechanical properties of soft tissue. Indentation test is an in vivo, non-invasive and convenient technique for measuring the tissue properties. In this chapter, two methods for the simultaneous estimation of Young’s modulus and Poisson’s ratio of soft tissues using indentation are presented. With the consideration of the finite deformation effect, the first method is based on the use of two sized indentors for conducting two different indentation tests, whereas the second one is only a single indentation test. Finite element (FE) analysis was used to demonstrate the feasibility of these two methods. The FE results were found to be comparable to the one shown in the previous literatures. It was revealed that finite deformation effect is of vital importance in the estimation of the Young’s modulus and Poisson’s ratio. Simultaneous estimation of these two parameters is necessary for achieving an accurate measurement of the Young’s modulus.
Original languageEnglish
Title of host publicationBiomechanical Systems Technology
Subtitle of host publicationMuscular Skeletal Systems
PublisherWorld Scientific Publishing Co.
Pages227-243
Number of pages17
ISBN (Electronic)9789812771384
ISBN (Print)9789812709837, 9812707980
DOIs
Publication statusPublished - 1 Jan 2009

Keywords

  • Finite element analysis
  • Indentation
  • Poisson’s ratio
  • Soft tissue
  • Young’s modulus

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

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