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A triplane video-based experimental system for studying axisymmetrically inflated biomembranes

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5 Author(s)
Hsu, F.P.K. ; Dept. of Mech. Eng., Maryland Univ., Baltimore, MD, USA ; Liu, A.M.C. ; Downs, J. ; Rigamonti, D.
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Uniform inflation experiments are useful for studying the multiaxial mechanical properties of thin biological soft tissues, but previous inflation studies have been limited by: (1) the lack of a theory that allows a specific form of the constitutive relation to be inferred directly from data; and (2) slow, off-line methods for the measurement and analysis of strain. Here, the authors describe a new on-line, triplane, video-based experimental system for performing new theoretically based tests on axisymmetrically inflated biomembranes. In particular, in-plane principal stretch ratios and principal curvatures can be measured continuously in multiple regions during pressure-controlled inflation tests. Data from tests on rubber membranes and fusiform aneurysms illustrate the utility of both the new theory and the experimental system

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Biomedical Engineering, IEEE Transactions on  (Volume:42 ,  Issue: 5 )