This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: lower temperature is a. lower b. higher c. same 8. To improve fatigue life of a component, a. residual tensile stress on the surface is beneficial b. residual compressive stress on the surface is beneficial c. no residual stress should be present 9. Fracture toughness in plane strain region is a. a constant for a given microstructure b. increases with crack size c. increases with applied stress 10. Stress relaxation in polymeric materials is a result of a. elastic deformation b. viscous deformation c. plastic deformation 11. Fatigue failure of components in service takes place when the sample is subjected to a. stress above the yield point b. stress closed to the UTS c. stress below the yield point 1. (a ) 2. ( b) 3. (b ) 4. (b ) 5. (b ) 6. (a ) 7. (a ) 8. ( b) 9. ( a) 10. (b ) 11. (c )...
View Full Document
This note was uploaded on 10/11/2009 for the course MSE 200 taught by Professor Wholedepartment during the Spring '08 term at N.C. State.
- Spring '08