research
Analytical Model and Experimental Verification of the Interfacial Peeling Strength of Electrodes
Background
The interfacial peeling strength of lithium-ion battery electrodes is a very important mechanical property that significantly affects the electrochemical performance of battery cells.
Objective
To characterize the interfacial peeling strength of an electrode, an analytical model based on the energy balance principle is established by considering the state of charge (SOC), the energy release rate, the tensile stiffness, and the peeling angle.
Achieving selective snapping-back and enhanced hysteresis in soft mechanical metamaterials via fibre reinforcement
When a soft mechanical metamaterial, consisting of a regular array of representative volume elements (RVE), is stressed up to a large strain, the delicately tailored behavior of the RVE does not prevail in the metamaterial due to boundary effect and manufacturing imperfections. A metamaterial sheet comprising RVEs designed for snapping-back behavior exhibits random snapping-through instability when uniaxially stretched. We conceptualize that loss of representativeness of RVE can be avoided by introducing fibre reinforcement to regulate boundary conditions.
Development and Characterization of Ti/SiC Metal Matrix Nanocomposite Coating with Superior Surface Properties
In this work, a Ti/SiC metal matrix nanocomposite (MMNC) coating was produced on Ti-6Al-4V substrate by Selective Laser Melting (SLM) technique. The MMNC coating had 7% SiC and 93% Ti by volume. It was observed that applying the nanocomposite coating on titanium substrate significantly reduced the wear and coefficient of friction (COF). By applying the coating, 108% improvement in hardness of Ti-6Al-4V substrates was obtained.
Global Composites Experts Webinar by Dr. J. N. Reddy
cdmHUB invites you to attend the Global Composites Experts Webinar Series.
Title: Recent Developments in Computational Approaches to Model Laminated Composite Shells and Damage and Fracture in Solids
Speaker: Dr. J. N. Reddy
Time: 2/11, 11AM-12PM EST.
Please go to https://www.purdue.edu/cmsc/events/2020-webinars/ to register for this webinar.
Call for Papers: Special Issue on Advances in Integrated Digital Engineering Applications
Dear Colleagues,
I'm current guest editor on a Special Issue of the MDPI Journal of Applied Sciences. This is a journal with an impact factor of 2.474.
The aim of this Special Issue is to explore the re-engineering of engineering through the integration of advanced digital technologies. Research papers or case studies involving any discipline of engineering are welcome. Topics may include, but are not limited to, the following:
Mechanics of Sodium-ion Battery Electrode
Measurement of Volume Changes and Associated Stresses in Ge Electrodes Due to Na/Na+ Redox Reactions
On the origin of supercontraction in spider silk
Spider silk is a protein material that exhibits extraordinary and nontrivial properties such as the ability to soften and decrease its length by up to ∼60% upon exposure to high humidity. This counter-intuitive process is commonly called supercontraction and is the result of a transition from a highly oriented glassy phase to a disoriented rubbery phase. In our new paper (published in biomacromolecules) we derive a model that explains the origins of the supercontraction phenomena. The insights from this work motivate the development of novel biomimetic materials.