IAAM recognizes the contribution of scientists towards the advancement of materials to global excellence with the ‘Researcher of the year’ award every year. Prof. Zhong Lin (Z. L.) Wang from Georgia Tech., USA and Prof. T. Venkatesan from Nano Core Research Center at National University of Singapore were recognized with this prestigious award in 2017 and 2018, respectively. This year, the award is presented to eminent physicist Prof. Enge Wang, Vice President of Chinese Academy of Sciences (CAS) and President Emeritus of Peking University, China, for his contribution towards the nanotechnology research and innovations. Advanced Materials Letters feels very honored and privileged to confer upon him the ‘Researcher of the Year’ award and dedicate the cover photo of December 2019 issue for his several years of diligence and uncountable achievements.
Validation of Advanced Constitutive Models for Accurate FE Modeling of TPU
Robert Eberlein*,1, Lucian Pasieka2 and Dimosthenis Rizos3
1Institute of Mechanical Systems, Zurich University of Applied Sciences, Winterthur, Switzerland
2,3Eugen Seitz AG, Wetzikon, Switzerland
Adv. Mater. Lett., 2019, 10 (12), pp 893-898
DOI: 10.5185/amlett.2019.0031
Publication Date (Web): Jun 24, 2019
Copyright © 2019 VBRI Press
E-mail: ebei@zhaw.ch
Thermoplastic polyurethanes (TPU) have become preferred materials for demanding high strain rate applications in many industries throughout past years. Due to their comparatively high abrasion resistance and toughness, TPU materials form an excellent fit for critical components sustaining high pressures in combination with harsh ambient conditions. This presentation illustrates a comparatively new field of critical applications for TPU components. While the operational pressures remain rather moderate at maximum 50 bar, challenges arise from high-frequency, cyclic loading conditions. In order to design robust dynamic TPU components, two main tasks must be accomplished: (i) visco-elastic-plastic material modeling and parameter identification, and (ii) material validation under realistic dynamic loading conditions on system level by means of advanced finite element (FE) simulations. This article puts (i) emphasis on the material calibration process and (ii) specifically demonstrates material validation on system level for selected TPU materials. In this context strain rate dependency of various TPU grades is discussed, which illustrates deficiencies of classical material modeling techniques available in commercial finite element software versus advanced nonlinear models. Eventually, recommendations are provided for an efficient but also accurate material calibration process of solid TPU materials that can significantly enhance product innovation processes. © VBRI Press.
Researcher of the Year 2019: Professor Enge Wang – A Legendary Researcher of Atomistic World
Graphene in Russia: The Main Centers, Research Areas, Results
Principles and practices of Si light emitting diodes using dressed photons
Dual Effect of Light Irradiation for Surface Relief Gratings Formation in Se-rich Ge-Se Thin Films
Synthesis, Structural Characterization, Dielectric and Piezoelectric Properties of Multiferroic Double-perovskite Bi2FeMnO6 Ceramics
Anisotropic and Nonlinear Mechanical Properties in Two-dimensional Nanomaterials
Anisotropy of Mechanical Properties of an AZ31 Alloy Prepared by SPD Method
Alignment of Rods and Flakes using Electric Field
Shape Memory Polymer Composites for Long-Term Exposure to Space Environment
In-soil Biodegradation Behavior of Chitosan-Coated Phosphorylated Starch Films
Adaptive FRP Structures for Exterior Applications
Characterization of Plasma Activated Water for Medical Applications
Current Global Scenario of Electric Vehicles
Review on Detection of Phenol in Water
Investigating the Machinability of Metallic Matrix Composites Reinforced by Carbon Nanotubes: A Review
Photocatalytic ZnO based PES Membranes for AOP Water Treatments under UV and Sunlight
Plasma Activated Water as a Source of Nitrogen for Algae Growth
Digital Light Processing (DLP) 3D Printing of Polyethylene Glycol (PEG) Biopolymer, Commercially available Ultra-High and Tough (UHT) Resin and Maghemite (γ-Fe2O3) Nanoparticles Mixture for Tissue Engineering Scaffold Application
Fabrication of Nanoparticle Embedded Polymeric Microbeads as an Efficient Drug Delivery System
Micro/Nanostructured Papers from Bagasse Pulp Reinforced by Nanofibrillated Cellulose from different Agro-Waste Sources
Structural, Optical and Magnetic Properties of Pristine, (Mn, Al) co-doped ZnO Nanocrystallites Synthesized via co-Precipitation Method
Nanosecond Laser Surface Patterning of Ti6Al4V Bio-alloy for Improved Biological Performance
Synthesis of Cu2O/Ag Composite Nanocubes with Promising Photoluminescence and Photodegradation Activity over Methylene Blue Dye
Locally available Clays of Bangladesh as a Replacement of imported Clays for Ceramic Industries
Green Synthesis and Characterization of Silver Nanoparticles using Cassia auriculata Leaves Extract and Its Efficacy as A Potential Antibacterial and Cytotoxic Effect