Annals of Biomedical Engineering

, Volume 14, Issue 5, pp 451–466 | Cite as

Mechanical behavior of excised canine visceral pleura

  • J. D. Humphrey
  • D. L. Vawter
  • R. P. Vito
Article

Abstract

A computer-controlled optical electromechanical biaxial test system was employed to study the mechanical response of excised sheets of canine visceral pleura. Three classes of tests were performed: uniform biaxial stretching tests and tests in which the specimen was cyclically stretched along one axis while either the load or dimension was maintained at a prescribed level in the orthogonal direction. The tests were defined completely within the software. Strain was inferred from tracking four particles affixed to the central region of the specimen surface. The visceral pleura was found to behave similarly to other biological soft tissues and required preconditioning to yield repeatable responses. In addition, the visceral pleura appeared to possess in-plane transverse isotropic material symmetry and to exhibit strong in-plane mechanical coupling at lower loads. The data presented herein is sufficient for determination of certain three-dimensional constitutive laws which are essential for further biomechanical analyses of the visceral pleura's role in lung response.

Keywords

Biaxial tests Stress-strain curves Material behavior 

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Copyright information

© Pergamon Journals Ltd. 1986

Authors and Affiliations

  • J. D. Humphrey
    • 1
  • D. L. Vawter
    • 2
  • R. P. Vito
    • 2
  1. 1.Department of Mechanical Engineering and MedicineJohns Hopkins UniversityBaltimore
  2. 2.School of Engineering Science and MechanicsGeorgia Institute of TechnologyAtlanta

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