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- https://eng.libretexts.org/Bookshelves/Mechanical_Engineering/Mechanics_of_Materials_(Roylance)/06%3A_Yield_and_Fracture/6.02%3A_Dislocation_Basis_of_Yield_and_CreepThis page explores the role of dislocations in crystalline materials, emphasizing their influence on yield strength and deformation. It covers dislocation types, their movement, and interactions leadi...This page explores the role of dislocations in crystalline materials, emphasizing their influence on yield strength and deformation. It covers dislocation types, their movement, and interactions leading to creep and fracture. Key concepts include the transition of dislocation characters, critical resolved shear stress, and dislocation multiplication mechanisms like the Frank-Read source.
- https://eng.libretexts.org/Bookshelves/Mechanical_Engineering/Mechanics_of_Materials_(Roylance)/06%3A_Yield_and_Fracture/6.04%3A_Introduction_to_Fracture_MechanicsThis page discusses the cost and implications of material fractures, emphasizing fracture mechanics and safety in engineering design. It reviews historical incidents like the DeHavilland Comet and Alo...This page discusses the cost and implications of material fractures, emphasizing fracture mechanics and safety in engineering design. It reviews historical incidents like the DeHavilland Comet and Aloha Airlines Flight 243, illustrating challenges in aircraft design against catastrophic failures due to cracks. Key concepts include stress intensity factors, ASTM standards for fracture toughness, and the effects of material properties such as grain size and temperature on ductility and brittleness
- https://eng.libretexts.org/Bookshelves/Mechanical_Engineering/Mechanics_of_Materials_(Roylance)/06%3A_Yield_and_Fracture/6.05%3A_FatigueThis page discusses material fatigue leading to failure from repeated loading, focusing on crack initiation and growth patterns, tools like the S-N curve and Goodman diagram, and the limitations of Mi...This page discusses material fatigue leading to failure from repeated loading, focusing on crack initiation and growth patterns, tools like the S-N curve and Goodman diagram, and the limitations of Miner's Law in estimating cumulative damage. It also introduces Paris law for crack growth rates linked to stress intensity, underscoring the need for safety in engineering.
