Fundamentals of Metal Fatigue AnalysisThe first book to present current methods and techniques of fatigue analysis, with a focus on developing basic skills for selecting appropriate analytical techniques. Contains numerous worked examples, chapter summaries, and problems. (vs. Fuchs/Stevens). |
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Page 90
... LEFM Assumptions Linear elastic fracture mechanics ( LEFM ) is based on the application of the theory of elasticity to bodies containing cracks or defects . The assumptions used in elasticity are also inherent in the theory of LEFM ...
... LEFM Assumptions Linear elastic fracture mechanics ( LEFM ) is based on the application of the theory of elasticity to bodies containing cracks or defects . The assumptions used in elasticity are also inherent in the theory of LEFM ...
Page 118
... LEFM assumptions violated ? 3.6 . A large plate made of 4140 steel ( σ , = 90 ksi ) containing a 0.2 in . center crack is subjected to a tensile stress of 30 ksi . Determine the plastic zone size . Are LEFM assumptions violated ? If the ...
... LEFM assumptions violated ? 3.6 . A large plate made of 4140 steel ( σ , = 90 ksi ) containing a 0.2 in . center crack is subjected to a tensile stress of 30 ksi . Determine the plastic zone size . Are LEFM assumptions violated ? If the ...
Page 237
... LEFM approach is the only method that deals directly with the propagation of fatigue cracks . It also provides a ... LEFM approach can also be used in conjunction with Sec . 6.5 Fracture Mechanics LEFM Approach 237 Fracture Mechanics ...
... LEFM approach is the only method that deals directly with the propagation of fatigue cracks . It also provides a ... LEFM approach can also be used in conjunction with Sec . 6.5 Fracture Mechanics LEFM Approach 237 Fracture Mechanics ...
Common terms and phrases
AKeff alternating stress applied ASTM behavior compressive constant amplitude crack closure crack growth rate Crack Initiation crack length crack propagation crack tip cycle counting cyclic stress-strain curve Determine elastic endurance limit Engineering equation estimate fatigue analysis fatigue crack growth fatigue damage fatigue strength Figure fracture mechanics fracture toughness fully reversed geometry K₁ Kmax LEFM load history mean stress effects Metals Miner's rule Mohr's circle multiaxial fatigue nominal stress notch root radius Omax plane strain plastic strain plate plot predictions problem rainflow counting relationship residual stresses S-N curve Section shear stress shot peening shown in Fig Society for Testing specimen steel strain amplitude strain history strain range stress amplitude stress and strain stress concentration stress intensity factor Stress ksi stress level stress-life stress-strain response surface techniques tensile tensile stresses Testing and Materials torsional true fracture ultimate strength values variable amplitude loading yield strength Δε