Chap9 - 1. 2. 3. ab {4. } 5. 6. 7. 8. 9. (a)(b) 10. 11....

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Unformatted text preview: 1. 2. 3. ab {4. } 5. 6. 7. 8. 9. (a)(b) 10. 11. (a)(b) 1. Ductile fracture. A mode of fracture that is attended by extensive gross plastic deformation. / Brittle fracture. Fracture that occurs by rapid crack propagation and without appreciable macroscopic deformation. Transgranular fracture. Fracture of polycrystalline materials by crack propagation through the grains. Intergranular fracture. Fracture of polycrystalline materials by crack propagation along grain boundaries. Fracture mechanics. A technique of fracture analysis used to determine the stress level at which preexisting cracks of known size will propagate, leading to fracture. Stress raiser. A small flaw (internal or surface) or a structural discontinuity at which an applied tensile stress will be amplified and from which cracks may propagate. Fracture toughness ( Kc ). Critical value of the stress intensity factor for which crack extension occurs. ( Kc ) Plane strain. The condition, important in fracture mechanical analyses, wherein, for tensile loading, there is zero strain in a...
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This note was uploaded on 10/15/2011 for the course ENG 302 taught by Professor Haitaowang during the Winter '10 term at Tsinghua University.

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Chap9 - 1. 2. 3. ab {4. } 5. 6. 7. 8. 9. (a)(b) 10. 11....

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