Results 51 to 60 of about 2,607,929 (307)

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Torsional strain-induced microstructural control in magnesium alloys: A pathway to enhanced mechanical performance

Materials & Design
To achieve a strength-ductility synergy in extruded ZM6 magnesium alloy, three torsion-dominated heterogeneous plastic deformation processes were proposed. The deformation mechanisms and the evolution of microstructure, texture, twin volume fraction (TVF)
Xiaodan Zhang, Xiaochuan Sun, Chuhao Liu, Kecheng Zhou, Huamiao Wang, Peidong Wu   +5 more
doaj   +1 more source

Experimental and Simulation Studies of Strength and Fracture Behaviors of Wind Turbine Bearing Steel Processed by High Pressure Torsion

Energies, 2016
White structure flaking (WSF) has been found to be one of the failure modes in bearing steels under rolling contacts through the formation of cracks associated with a microstructural change called white etching area (WEA).
Ning Wang, Luis V. Wilches Peña, Ling Wang, B. G. Mellor, Yi Huang   +4 more
doaj   +1 more source

Torsional Mechanics of Circular DNA

Circular DNA found in the cell is actively regulated to an underwound state, with their superhelical density close to σ ∼ - 0.06. While this underwound state is essential to life, how it impacts the torsional mechanical properties of DNA is not fully understood.
Gundeep Singh, Yifeng Hong, James T. Inman, James P. Sethna, Michelle D. Wang   +4 more
openaire   +2 more sources

Analysis of dynamic mechanical response in torsion [PDF]

Journal of Rheology, 2016
We investigate the dynamic response of industrial rubbers (styrene-butadiene random copolymers, SBR) in torsion and compare against common small amplitude oscillatory shear measurements by using a torsion rectangular fixture, a modified torsion cylindrical fixture, and a conventional parallel plate fixture, respectively, in two different rheometers ...
Dessi, Claudia, Tsibidis, George D., Vlassopoulos, Dimitris, DE CORATO, MARCO, TROFA, MARCO, D'AVINO, GAETANO, MAFFETTONE, PIER LUCA, Coppola, Salvatore   +7 more
openaire   +3 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Pre‐Torsion Tubular Metamaterials: Multi‐Effect Integration for Advanced Functional Applications

Advanced Science
Mechanical metamaterials continuously push the boundaries of mechanical properties far beyond conventional materials. However, a critical step toward the applications of metamaterials lies in combining multiple effects and functionalities into a single ...
Xuegang Zhang, Jianfei Yin, Xin Ren, Jie Wu, Yang Wang, Xingchi Teng, Wei Jiang, Dong Han, Xihai Ni, Yi Zhang, Dianlong Yu, Jihong Wen   +11 more
doaj   +1 more source

Patient with antiphospholipid syndrome presenting with testicular torsion-like symptoms

Urology Case Reports, 2017
Testicular torsion, a urological emergency, occurs due to absence of testicular blood supply secondary to a mechanical twist of the spermatic cord. The authors describe a 28-year-old male who presented with torsion symptoms, first in the left testicle ...
Arnav Srivastava, Joan Ko, Joy Ogunsile, Alison Moliterno, William H. Westra, Alice Semerjian   +5 more
doaj   +1 more source

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

Advanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil, Edward D. McCarthy, Parvez Alam   +2 more
wiley   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source