Results 41 to 50 of about 35,679 (298)

Viscoelastic Relaxation Modulus Characterization Using Prony Series

Latin American Journal of Solids and Structures
The mechanical behavior of viscoelastic materials is influenced, among other factors, by parameters like time and temperature. The present paper proposes a methodology for a thermorheologically and piezorheologically simple characterization of ...
Juliana E. Lopes Pacheco, Carlos Alberto Bavastri, Jucélio Tomás Pereira   +2 more
doaj   +1 more source

Predicting the Relaxation Modulus for the Study of the Delayed Behaviour of Kenaf Fibres in Stress Relaxation

Fibres and Textiles in Eastern Europe, 2021
Plant fibres (PFs) are preferred reinforcements of bio-composites. Knowledge of their lifespan requires a study of their viscoelastic behaviour. In this paper, a stress relaxation analysis of kenaf fibres was performed at a constant rate of deformation at room temperature. A method for extracting the relaxation modulus in the deferred zone was proposed.
S Saïdjo, Richard Ntenga, Etienne Mfoumou, Tibi Beda, Alexis Beakou   +4 more
openaire   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton

Applied Sciences, 2021
Seed cotton compression molding solves the inconvenience of seed cotton transportation and storage after mechanical harvesting. Stress relaxation is closely related to the performance of the compressed seed cotton.
Jun Wang, Hongwen Zhang, Lei Wang, Ximei Wei, Meng Wang, Yanqing Gu, Yunxiao Cai   +6 more
doaj   +1 more source

the relaxation modulus master curve of HDPE (trade mark YEM4803T)

, 2018
figure 4-Curve fitting to the test data of HDPE tensile relaxation modulus with time figure 4 is the relaxation modulus master curve of HDPE (trade mark YEM4803T)
Shi, J (via Mendeley Data)
core   +1 more source

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

Constitutive Model Based on Stress Relaxation for Composite Modified Double-Base Propellants and Master Curve of Relaxation Modulus

Aerospace
This study investigates the constitutive model and relaxation modulus master curve of composite modified double-base (CMDB) propellants through uniaxial constant-rate tensile tests and stress relaxation tests.
Yao Li, Jinsheng Xu, Changsheng Zhou, Xiong Chen, Xiumin Yang   +4 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Experimental and Theoretical Analysis of Frequency- and Temperature-Dependent Characteristics in Viscoelastic Materials Using Prony Series

Applied Mechanics
This study comprehensively investigates the frequency- and temperature-dependent viscoelastic properties of two elastomer materials, focusing on the comparison between experimental results and theoretical models derived from Prony series coefficients ...
Gökhan Aslan, Nizami Aktürk
doaj   +1 more source

Dynamic relaxations in a bio‐based polyamide with enhanced mechanical modulus [PDF]

Journal of Applied Polymer Science, 2018
ABSTRACTA new grade of bio‐based polyamide (PA)—PA meta‐xylylene diamine 10 (PA mXD 10)—was investigated. Its first interest is that it permits mild processing conditions at about 200 °C. The calorimetric study shows the existence of two cold crystallizations indicative of slow crystallization rate. The glass transition stabilizes at 55 °C.
G. Haddou, A. Roggero, J. Dandurand, E. Dantras, P. Ponteins, C. Lacabanne   +5 more
openaire   +3 more sources