Lecture 18 - Biomechanics and Orthopedics

author: W. Mark Saltzman, Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University
recorded by: Yale University
published: Jan. 4, 2011,   recorded: March 2008,   views: 3152
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Description

Professor Saltzman introduces the material properties of elasticity and viscosity. He describes two separate experimental setups to measure the elasticity and the viscosity of a material. Material elasticity can be defined in terms of stress-strain property, and defines the Young's modulus (E), which is the slope of the stress-strain curve. Fluid viscosity, on the other hand, is described by shear stress. When modeling any material, the spring can be used to represent an ideal elastic material and the dashpot an ideal viscoelastic material. All biomaterials contain some combination of these properties and can be described by physical models that consist of both spring and dashpot.

Reading assignment:

Biomedical Engineering: Bridging Medicine and Technology, in preparation by Mark Saltzman (forthcoming by Cambridge University Press); chapters 10 and 13

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