Results 1 to 10 of about 164,066 (268)

Investigation of Material Constants of CaTiO3 Doped (K,Na)NbO3 Film by MEMS-Based Test Elements [PDF]

open access: yesMicromachines, 2018
A CaTiO3-doped (K,Na)NbO3 (KNN-CT) film is a lead-free piezoelectric film that is expected to substitute Pb(Zr,Ti)O3 (PZT) film in piezoelectric micro electro mechanical systems (MEMS).
Ryosuke Kaneko   +5 more
doaj   +2 more sources

The flow behavior modeling of as-extruded 3Cr20Ni10W2 austenitic heat-resistant alloy at elevated temperatures considering the effect of strain [PDF]

open access: yesMaterials Research, 2014
In order to investigate the compressive deformation behavior of 3Cr20Ni10W2 alloy, a series of isothermal upsetting experiments were carried out in the temperature range of 1203-1403 K and strain rate range of 0.01-10 s-1 on a Gleeble-1500 thermo ...
Guo-Zheng Quan   +4 more
doaj   +1 more source

Plane anisotropic rari‐constant materials [PDF]

open access: yesMathematical Methods in the Applied Sciences, 2015
We consider here the existence of rari‐constant anisotropic layers and show that actually there are two distinct classes of such materials, mutually exclusive. Also, we show that the correct condition for establishing that a material is of the rari‐constant type is that the number of independent linear tensor invariants of the elastic tensors must ...
Vannucci, Paolo, Desmorat, Boris
openaire   +1 more source

Material Size Dependence on Fundamental Constants [PDF]

open access: yesPhysical Review Letters, 2019
Precise experimental setups for detection of variation of fundamental constants, scalar dark matter, or gravitational waves, such as laser interferometers, optical cavities and resonant-mass detectors, are directly linked to measuring changes in material size.
Pašteka, Lukáš F.   +4 more
openaire   +5 more sources

Measurement of Orthotropic Material Constants and Discussion on 3D Printing Parameters in Additive Manufacturing

open access: yesApplied Sciences, 2022
In this study, the orthogonal mechanical properties of additive manufacturing technology were explored. Firstly, six test pieces of different stacking methods were printed with a 3D printer, based on fused deposition modeling. The resonance frequency was
Yu-Hsi Huang, Chun-Yi Lin
doaj   +1 more source

Micromechanical Analysis for Macroscopic Elastic Constants and Thermal Expansion Coefficients of Composite Materials Including Double Inhomogeneous Inclusions (1st Report, Derivation of Solutions for Spheroidal Shapes)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
In this study, micromechanical modeling and analysis is performed for a composite material containing many double inhomogeneous inclusions which consist of a nested sequence of two inhomogeneous inclusions, whose shapes are spheroids that are different ...
Hiroyuki ONO, Akihiro KARIYA
doaj   +1 more source

A Global Optimization Method to Determine the Complex Material Constants of Piezoelectric Bars in the Length Thickness Extensional Mode

open access: yesActuators, 2021
Optimization methods have been used to determine the elastic, piezoelectric, and dielectric constants of piezoelectric materials from admittance or impedance measurements.
Xiangming Xiong, Xiaotian Li
doaj   +1 more source

Hyperelastic-material characterization: a comparison of material constants

open access: yesMateriali in tehnologije, 2020
Data fitting is an essential part of obtaining material constants for hyperelastic models. However, due to inadequate experimental data, a single-data set, i.e. uniaxial data, is often used for fitting. Despite a frequent use of this method, it is proven that it provides an inaccurate forecast for a characterization. Therefore, as an alternative method,
Keerthiwansa, Gustinna Wadu Rohitha   +2 more
openaire   +2 more sources

Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis

open access: yesDrvna Industrija, 2016
This paper presents a numerical procedure for the analysis of complex laminate structures. The procedure is based on the application of reduced stiffness of complex laminate.
Biserka Nestorović   +3 more
doaj   +1 more source

A characterization for the flow behavior of as-extruded 7075 aluminum alloy by the improved Arrhenius model with variable parameters

open access: yesMaterials Research, 2012
In order to perform the numerical simulations of forging response and establish the processing parameters for as-extruded 7075 aluminum alloy, the compressive deformation behavior of as-extruded 7075 aluminum alloy were investigated at the temperatures ...
Guo-zheng Quan   +5 more
doaj   +1 more source

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