Results 21 to 30 of about 1,119 (244)
Experimental methodology for the quantification of crack tip plastic zone and shape from the analysis of displacement fields [PDF]
Fracture and Structural Integrity, 2017 The current work presents a novel methodology for the experimental quantification of the crack tip plastic zone during fatigue crack growth. This methodology is based on the application of yield criteria to estimate the area and the shape of the plastic ...
J.M. Vasco-Olmo +4 more
doaj +1 more source
Crack-tip shielding in silica at room temperature
, 2020 When water penetrates into silica surfaces near a crack tip, it reacts with the SiO$_{2}$ network and generates hydroxyl $\equiv$SiOH. Due to the hydroxyl generation, the glass must expand. Since a free expansion is not possible for the thin layers on the undeformed bulk material, compressive stresses occur which shield the crack-tip region from ...
Fett, T., Schell, K. G., Bucharsky, C.
openaire +2 more sources
Interaction between offset parallel cracks in rock
Yantu gongcheng xuebao, 2017 The interaction of cracks with different locations and sizes is a key factor leading to the damage of rock. Based on the Kachanov method, the interaction rules between two offset parallel cracks with different level intervals, vertical intervals, crack ...
ZHU Di-jie 1, CHEN Zhong-hui 1, XI Jing-yi 2, YANG Deng-feng 1
doaj +1 more source
Erratum to: The shielding effect of the crack-tip plastic zone [PDF]
International Journal of Fracture, 2011 which should be regarded by the reader as the final version. Fortunately, this mistake has negligible effect on the numerical results shown in Figs. 2, 3 and 4, so that Eqs. (19) and (20) are applicable. In addition, the non-zero components of the Eshelby tensor given in Eq.
P. Zhu, L. Yang, Z. Li, J. Sun
openaire +1 more source
On Crack Closure and Crack Tip Shielding During Fatigue Crack Growth
, 1999 Fatigue crack growth can be strongly influenced by crack closure, i. e., the contacting of the opposing faces of a fatigue crack above the minimum load in a loading cycle. This crack closure shields the crack tip from the full stress field, but different views are held regarding the extent of this shielding.
Marcus, Harris, McEvily, Arthur
openaire +3 more sources
Superhard bulk high-entropy carbides with enhanced toughness via metastable in-situ particles
Nature Communications, 2023 Despite the extremely high hardness of recently proposed high-entropy carbides (HECs), the low fracture toughness limits their applications in harsh mechanical environment. Here, we introduce a metastability engineering strategy to achieve superhard HECs
Jiaojiao Hu +6 more
doaj +1 more source
Effect of stiff substrates on enhancing the fracture resistance of Barium Titanate thin films
Materials & Design, 2023 Damage tolerance of a thin film attached to a substrate is dependent on several parameters such as film thickness, film orientation, residual stresses, nature of interfaces, microstructure and defects present.
Nidhin George Mathews +5 more
doaj +1 more source
Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales
Advanced Engineering Materials, EarlyView.Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik +7 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley +1 more source
Advanced Engineering Materials, EarlyView.Different Al/Al bimetals with a single engineered interface reveal how mechanical mismatch governs fatigue crack growth under cyclic loading. Additionally, loading–unloading–reloading tests link the microyielding behavior to the fatigue crack growth resistance, while crack‐path analysis reveals toughening mechanisms at the interface, highlighting ...
Sebastian Vollath +2 more
wiley +1 more source