Slide 13

Shown on the left is a typical stress versus strain curve for a ductile material. The slope of the line in the linear elastic region is the shear modulus for the material. The schematic on the right is a plot of torque versus rotation. This curve is similar to the stress-strain curve. The plot shows the evolution of plastic deformation for the shaft as the torque increases. Just at the end of the linear portion of the plot, the outer portion of the shaft begins to yield. As torque increases, the plastic zone expands to the inner core.

Introduction

Chalk Talks
•Basic theory
•Testing
  system
•Engineered   materials
•Turkey bone

Virtual Tests
•Aluminum
•Turkey bone
•PMMA
•Cast iron

Test Data
•Aluminum
•Turkey bone
•PMMA
•Cast iron

Lab Manual
•Engineered   materials
-Instructions
-Data sheets
•Turkey bone
-Instructions
-Data sheets
•Entire lab
  manual (.doc) (.pdf)

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