The fracture and any dissipative processes must also remain confined to a small region in the vicinity of the crack tip. If these conditions are not met, linear elastic fracture mechanics concepts do not apply …

May 30, 2025 · LEFM is built on the following assumptions: Materials behave elastically up to the point of fracture. Plastic deformation is minimal and confined to a small zone near the crack tip. Cracks are …

Aug 20, 2025 · This chapter covers the fundamentals of linear-elastic fracture mechanics (LEFM) and how they are applied to selecting the material, obtaining the stress level, and determining the crack …

When the plastic zone at the tip of the crack is small relative to the crack length the stress state at the crack tip is the result of elastic forces within the material and is termed linear elastic fracture …

Again, LEFM is valid only when the inelastic deformation is small compared to the size of the crack, what we called small-scale yielding. If large zones of plastic deformation develop before the crack …

Linear elastic fracture mechanics (LEFM) assumes that the material is behaving in a linear-elastic manner. For this assumption to be valid, the size of the plastic zone must be small relative to the part …

Since materials plastically deform as the yield stress is exceeded, a plastic zone will form near the crack tip. The basis of LEFM remains valid, though, if this region of plasticity remains small in relation to …

Feb 5, 2016 · This chapter presents the gradual developments that have taken place to advance the understanding of fracture of brittle materials and other materials that give rise to small-scale plastic …

The linear elastic fracture mechanics (LEFM) is the pillar of all fracture mechanics. In this chapter, it is presented in full, with complete derivations and many examples.