We performed in vitro pressure-diameter and axial force-length experiments on nondiseased, passive bovine coronary arteries subjected to bath temperatures from 21 to 80° C for 90 s to 4 hr. Over the strain ranges studied, we found that: (a) vessel behavior remained the same over 20 min of testing at 21 to 55° C, (b) vessels stiffened multiaxially after 5 min of exposure to 60° C and continued to stiffen over 20 min of testing, (c) dramatic multiaxial vessel stiffening and shrinkage occurred after 90 s of exposure to 70 and 80° C, and (d) heat-induced changes at 70° C depended on the intraluminal pressure during heating. Thus, passive bovine coronary arteries exhibit a complex thermomechanical behavior that depends on the temperature, duration of thermal exposure, and the mechanical loads applied during heating.
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February 1995
Technical Papers
Heat-Induced Changes in the Mechanical Behavior of Passive Coronary Arteries
T. Kang,
T. Kang
Mechanical Engineering, University of Maryland
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J. Resar,
J. Resar
Department of Medicine, The Johns Hopkins University, Baltimore, MD 21205
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J. D. Humphrey
J. D. Humphrey
Department of Mechanical Engineering, The University of Maryland, Baltimore, MD 21228
Search for other works by this author on:
T. Kang
Mechanical Engineering, University of Maryland
J. Resar
Department of Medicine, The Johns Hopkins University, Baltimore, MD 21205
J. D. Humphrey
Department of Mechanical Engineering, The University of Maryland, Baltimore, MD 21228
J Biomech Eng. Feb 1995, 117(1): 86-93 (8 pages)
Published Online: February 1, 1995
Article history
Received:
March 5, 1993
Revised:
March 11, 1994
Online:
October 30, 2007
Citation
Kang, T., Resar, J., and Humphrey, J. D. (February 1, 1995). "Heat-Induced Changes in the Mechanical Behavior of Passive Coronary Arteries." ASME. J Biomech Eng. February 1995; 117(1): 86–93. https://doi.org/10.1115/1.2792274
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