Dear Colleagues,
After one-year effort, we are happy to announce that the SI on Instability and Bifurcation in Materials and Structures is now completed and comes out online (https://www.sciencedirect.com/journal/international-journal-of-non-linear-mechanics/special-issue/1089TRQ46GQ).
A quantitative phase-field model is developed for prediction of solute trapping for solidification velocities relevant to additive manufacturing. S. Kavousi and M. Asle Zaeem, Quantitative phase-field modeling of solute trapping in rapid solidification. Acta Materialia 205 (2021) 116562 (11 pages).
Esteemed Colleague,
as the Editor-in-Chief of Theoretical and Applied Fracture Mechanics (TAFMech, https://www.journals.elsevier.com/theoretical-and-applied-fracture-mechanics/), this post is to invite you to attend the following free on-line global live webinars on Fracture Mechanics-related topics:
Þ Prof. David McDowell – Georgia Tech Institute for Materials, Atlanta, Georgia, USA
Dear iMechanicians,
I hope that the following work is of interest to you. We combine the phase field method with cohesive zone modelling to predict the fracture behaviour of fibre-reinforced composites across scales.
Wei Tan & Emilio Martínez-Pañeda. Phase field predictions of microscopic fracture and R-curve behaviour of fibre-reinforced composites. Composites Science and Technology 202, 108539 (2021)
Heavy ion irradiation can be used to modify the atomic structure of a material and improve its dissolution characteristics as shown here. This has implication for the design of bioceramics
The morphology of MAX phase composites is examined here. Specifically, crack branching is examined in Al - Ti2AlC composites showing the role of MAX phase distribution on the fracture performance of such materials. Ductile alloy phases serve to deflect cracks in the hard, yet tough, MAX phase.
Full text available here
EML Webinar on 16 December 2020 will be given by Dave Weitz, Harvard University. Discussion Leader Jia Liu, Harvard University.
Title: Snap, Speckle and Spot: Sight and Sound of Hydraulic Fracture
Time: 6:30 am California, 9:30 am Boston, 2:30 pm London, 10:30 pm Beijing on 16 December 2020
Natural nonlinear materials, e.g., biological materials and polymers, are mechanically weak. It has been amajor challenge to develop a nonlinear material with potentialmechanical applications. Here, we develop a nonlinear elastic metamaterial with giant and tailorable-nonreciprocal elastic moduli. The metamaterial is designed with a microstructural axial asymmetry, which activated nonlinear microstructural deformations in the axial direction and microstructural residual moments.
The classical continuum mechanics assumes that a material is a composition of an infinite number of particles each of which is a point that can only move and interact with its nearest neighbors. This classical mechanics has limited applications where it fails to describe the discrete structure of the material or to reveal many of the microscopic phenomena, e.g., micro-deformation and micro-dislocation.
