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Material Properties Elasticity A -Elastic Limit B - Upper Yield Stress C - Lower Yield Stress D -Ultimate Stress E -Breaking Stress

Engineering Concepts in Assitive Technology 6

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This presentation is part six of a series that was recorded at the Rehabilitation Engineering and Assistive Technology Society of North America Conference in 2009. The presenter is Jerry Weisman from Rehabilitation Technology Services.

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Page 1: Engineering Concepts in Assitive Technology 6

Material Properties Elasticity

A -Elastic LimitB - Upper Yield StressC - Lower Yield StressD -Ultimate Stress

E -Breaking Stress

Page 2: Engineering Concepts in Assitive Technology 6

Material Properties Viscoelasticity

Time dependent properties

Page 3: Engineering Concepts in Assitive Technology 6

Material Properties Viscoelasticity

Time dependent propertiesCreep

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Material Properties Viscoelasticity

Time dependent propertiesStress Relaxation