A method to compute mixed‐mode stress intensity factors for nonplanar cracks in three dimensions
Sign Up to like & getrecommendations! Published in 2020 at "International Journal for Numerical Methods in Engineering"
DOI: 10.1002/nme.6432
Abstract: Methods to compute the stress intensity factors along a three‐dimensional (3D) crack front often display a tenuous rate of convergence under mesh refinement or, worse, do not converge, particularly when applied on unstructured meshes. In… read more here.
Keywords: crack front; method; intensity factors; stress intensity ... See more keywords
A family of non-conforming crack front elements of quadrilateral and triangular types for 3D crack problems using the boundary element method
Sign Up to like & getrecommendations! Published in 2019 at "Frontiers of Mechanical Engineering"
DOI: 10.1007/s11465-019-0540-3
Abstract: This study focuses on establishing nonconforming crack front elements of quadrilateral and triangular types for 3D crack problems when the dual boundary element method is applied. The asymptotic behavior of the physical variables in the… read more here.
Keywords: crack problems; front elements; elements quadrilateral; crack front ... See more keywords
Crack front waves: A 3D dynamic response to a local perturbation of tensile and shear cracks
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2019.103806
Abstract: Abstract Crack front waves are long-lived perturbations propagating along the crack front. They are triggered by heterogeneities on the crack plane, as for instance tough asperities, which disturb the crack front shape. Crack front waves… read more here.
Keywords: shear cracks; tensile shear; front waves; crack front ... See more keywords
Branching and softening of loading path during onset of crack at elastic-brittle interface
Sign Up to like & getrecommendations! Published in 2018 at "Mechanics of Materials"
DOI: 10.1016/j.mechmat.2018.08.013
Abstract: Abstract The load response during onset and reformation of an interface crack is investigated experimentally and theoretically using linear-elastic analysis. A number of double cantilever beam experiments is carried out under the prescribed displacement and… read more here.
Keywords: softening loading; crack front; branching softening; interface ... See more keywords
Stress intensity factor for clamped SENT specimen containing non-straight crack front and side grooves
Sign Up to like & getrecommendations! Published in 2018 at "Theoretical and Applied Fracture Mechanics"
DOI: 10.1016/j.tafmec.2017.07.011
Abstract: Abstract Three-dimensional (3D) finite element analyses (FEA) of clamped single-edge notched tension (SENT) specimens are performed to evaluate the stress intensity factor (SIF). Both the average and local SIF values over the crack front are… read more here.
Keywords: straight crack; crack front; intensity factor; stress intensity ... See more keywords
Topological defects govern crack front motion and facet formation on broken surfaces.
Sign Up to like & getrecommendations! Published in 2018 at "Nature materials"
DOI: 10.1038/nmat5008
Abstract: Cracks develop intricate patterns on the surfaces that they create. As faceted fracture surfaces are commonly formed by slow tensile cracks in both crystalline and amorphous materials, facet formation and structure cannot reflect microscopic order.… read more here.
Keywords: topological defects; crack front; facet formation; front ... See more keywords
Velocity correlated crack front and surface marks in single crystalline silicon
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-03642-w
Abstract: Single crystalline silicon fractures on low-energy cleavage planes such as (111) and (110). The crack propagation cannot accurately be predicted by linear elastic fracture mechanics since it does not account for small scale and inelastic… read more here.
Keywords: crystalline silicon; crack front; velocity; single crystalline ... See more keywords
Crack Front Interaction with Self-Emitted Acoustic Waves.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.195501
Abstract: The interaction of a propagating crack in implanted silicon with self-emitted acoustic waves results in periodic patterns on fractured surfaces. Direct measurement of the acoustic emission ahead of the fracture front shows the emergence of… read more here.
Keywords: emitted acoustic; crack front; acoustic waves; self emitted ... See more keywords
Interaction integral approach for the Evaluation of Crack-front Singularities in a Solid Cantilever Beam under Magneto-Electro-Elastic loading using XFEM
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Intelligent Material Systems and Structures"
DOI: 10.1177/1045389x221128578
Abstract: In the piezoelectric energy harvesting devices, the most preferred is the cantilever beam orientation that can produce maximum deflection. Therefore, in this paper, three-dimensional fracture analysis of a cracked magneto-electro-elastic cantilever beam is studied using… read more here.
Keywords: front singularities; electro elastic; crack front; magneto electro ... See more keywords