The influence of grain size distribution on ductile intergranular crack growth resistance is investigated using full field microstructure-based finite element calculations and a simpler model based on discrete unit events and graph search. The finite …
The onset of macroscopic strain localization limits the ductility of many ductile materials. For porous ductile materials, two distinct mechanisms of macroscopic localization have been identified: void growth induced softening and void coalescence. …
Uniaxial tensile tests were carried on graphene (reduced graphene oxide, RGO)–Al laminated composites with Al lamella thicknesses varying from 1 $μ$m down to 200 nm. It was found that there was a transition in plastic deformation mechanism, from a …
A model based on discrete unit events coupled with a graph search algorithm is developed to predict intergranular fracture. The model is based on two hypotheses: (i) the key unit event associated with intergranular crack propagation is the …
The objective is to identify the micromechanisms of ductile crack advance, and isolate the key microstructural and material parameters that affect these micromechanisms and fracture toughness of ductile structural materials. Three dimensional, finite …
Heat dissipation still remains an unsolved problem in dynamic plasticity, where nearly adiabatic conditions prevail during high-rate loading scenarios. It is well known that the mechanical energy that is not dissipated as heat during material …
Graphene is considered to be an ideal reinforcement in metals, and its strengthening to the metal matrix is found to be the combined effect of load-sharing and the alteration of dislocation activity in the matrix. In this study, uniaxial compression …
Single-walled carbon nanotubes (SWCNTs) have excellent intrinsic mechanical properties and would not suffer from inter-layer sliding as their multi-walled counterparts, making them promising reinforcing candidates for advanced metal matrix …
Metallic structures, produced by high pressure die-cast or powder bed fusion additive manufacturing techniques often contain gas pores. While under high triaxial stress states the effect of internal pressure can be superimposed on top of the applied …
Stress wave loaded specimens are extensively used to study the dynamic fracture of a variety of materials. Various geometries can be found in the literature, each having its advantages and disadvantages. The majority of the available specimens are …