EML Webinar on 7 October 2020 will be given by Prof. Kaushik Bhattacharya, Caltech, Discussion leader: Shengqiang Cai, UCSD
Title: Title: Liquid crystal elastomers
Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on 7 October 2020
Zoom Link: https://harvard.zoom.us/j/271079684
Zoom ID: 271 079 684
Toughening Transparent Ceramics with Bio-inspired Architectures
Zhen Yin (1, 2)
1 McGill University, Canada
2 Max Planck Institute for Intelligent Systems, Germany
Acknowledgement: This journal club was posted on my last day in Montreal. Thanks Prof. Francois Barthelat and all the group memebers for the wonderful six years. A special thanks goes to Prof. Francois Barthelat for his advisory in these years that makes this journal club possible.
A phase-field model based on a modified form of the regularized formulation of Griffith’s fracture theory is presented to investigate intergranular and transgranular crack propagations in polycrystalline brittle materials. Grains and grain boundaries are incorporated in the crack initiation and propagation model based on a phase-field model for grain growth, in which the elastic anisotropy varies based on the grain orientation angle, and the grain boundary energy is related to the misorientation angle of the adjacent grains.
Title: Direct coupling predicting the strength and life of fiberous composite laminates
Speaker: Dr. Ken L Reifsnider
Time: 10/8, 11AM-12PM EST.
Please go to https://www.purdue.edu/cmsc/events/2020-webinars/ to register for this talk.
There is a new paper in predicting battery aging without testing based empirical models. "Entropy generation model to estimate battery aging"
https://www.sciencedirect.com/science/article/abs/pii/S2352152X20315772…
https://www.linkedin.com/feed/update/urn:li:activity:671384407290732134…
Motivated by the recent synthesis of boron-carbon-nitride (BCN) monolayers with different atomic compositions, we propose a novel planar BCN lateral heterostructure with a combination of graphene and hexagonal boron nitride (h-BN) counterparts. Density functional theory (DFT) and classical molecular dynamics (CMD) simulations are integrated to examine the effects of defects (vacancy and Stone-Wales (SW) defects) and temperature on the physical properties of the BCN heterostructure.
A postdoctoral and graduate student openings with the main focus on the mechanics of composites materials are available immediately in Shakiba's group. We are looking for strongly motivated candidates to work on an AFOSR supported project on 1) thermo-mechanical damage coupling in FRPs, 2) simulation of additively manufactured composites and 3) sensitivity and machine learning for damage predictions.
EML Webinar on 23 September 2020 will be given by Marc Geers, Eindhoven University of Technology, Discussion leader: Laurence Brassart, Oxford University.
Title: Title: Multi-scale homogenization of materials with an emergent macroscopic behaviour
Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on 23 September 2020
Tribological behavior of graphene layers has been a focus of intensive research interest since its crystal lattice structure can be exploited to achieve incommensurate contact, leading to nearly zero friction, namely structural superlubricity. However, wrinkling undulations are omnipresent on graphene and difficult to be completely eliminated, which inevitably resists superlubricity in reality. Here, we explore how the presence of surface wrinkles affects nanotribological behavior of graphene sliding systems.
