Results 261 to 270 of about 156,071 (279)

A Theoretical Approach to Matching Characteristics of a Novel Absorber Based on the Concept of Equivalent Transformation Method of Material Constant

IEICE Transactions on Electronics, 2006
Based on the concept of Equivalent Transformation Method of Material Constant (ETMMC), a thin and light weight EM-wave absorber is newly proposed. It becomes possible to merge both the competing characteristics of changing the matching frequency toward a higher frequency region by means of punching out small holes in the magnetic absorber and of ...
Youji Kotsuka, Kazuo Shimodaira
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Prediction of fracture loads in PMMA U‐notched specimens using the equivalent material concept and the theory of critical distances combined criterion

Fatigue & Fracture of Engineering Materials & Structures, 2017
AbstractThis paper provides a methodology for the prediction of fracture loads in notched materials that combines the equivalent material concept with the theory of critical distances. The latter has a linear‐elastic nature and requires material calibration in those cases where the non‐linear material behaviour is significant.
S. Cicero, A.R. Torabi, V. Madrazo, P. Azizi   +3 more
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Crack growth onset in thin aluminum sheets under mixed mode I/II loading: A new form of the Equivalent Material Concept

Thin-Walled Structures, 2019
Abstract Ductile failure of diagonally loaded square plate (DLSP) samples, created from Al 6061-T6 and Al 7075-T6 alloys with small thickness weakened by central cracks, is assessed theoretically and experimentally under combined in-plane loading. To provide different combinations of mode I and mode II loadings in the tests on DLSP, various crack ...
A.R. Torabi, M.R. Ayatollahi, M. Torabi, A.S. Rahimi   +3 more
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Fracture study of a ductile polymer-based nanocomposite weakened by blunt V-notches under mode I loading: Application of the Equivalent Material Concept

Theoretical and Applied Fracture Mechanics, 2018
Abstract The onset of fracture is studied in a ductile epoxy-based nanocomposite containing round-tip V-notches both experimentally and theoretically under pure mode I loading conditions. Mechanical properties of the nanocomposite containing 0.1, 0.3, 0.5 and 1 wt% multi-walled carbon nanotubes (MWCNTs) are experimentally measured to find a desired ...
A.R. Torabi, A.S. Rahimi, M.R. Ayatollahi   +2 more
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Application of the concept of the criterion of equivalence of complex stress state to simple tension for assessing the fatigue resistance of structural materials. Part 1. Review of some experimental data with the preparation of the necessary information for subsequent use

Vestnik Mashinostroeniya, 2021
A brief overview of the features of the fatigue resistance of some steels is given with the selection of terms, concepts and numerical data necessary for the subsequent compilation and verification of the equivalence criterion in relation to assessing the ability of structural materials to resist fatigue for a long time under the action of certain ...
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The Equivalent Material Concept in Functionally Graded Plates Calculus

2023
V. Nastasescu, S. Marzavan
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Mixed-mode fracture assessment of functionally graded materials using rule of mixtures and equivalent stress intensity factor concept

Multidiscipline Modeling in Materials and Structures
Purpose This paper aims to evaluate mixed-mode fracture behavior in alumina/zirconia functionally graded materials (FGMs) by integrating the rule of mixtures with the equivalent stress intensity factor (SIF) concept. Design/methodology/approach
Abdelkader Boulenouar, Mohammed A. Bouchelarm, Meriem Chafi, Mohamed Mazari, Noureddine Benseddiq   +4 more
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A successful combination of the equivalent material concept and the averaged strain energy density criterion for predicting crack initiation from blunt V-notches in ductile aluminum plates under mixed mode loading

Physical Mesomechanics, 2016
Crack initiation from blunt V-notch borders in ductile Al 6061-T6 plates is investigated experimentally and theoretically under mixed mode I/II loading. Experimental observations with naked eye during loading indicated large plastic deformations around the notch tip at the onset of crack initiation, demonstrating large-scale yielding failure regime for
Torabi, A. R., Campagnolo, A., Berto, F.
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Electronic_Supplementary_Material – Supplemental material for The health locus of control concept: Factorial structure, psychometric properties and form equivalence of the Multidimensional Health Locus of Control scales

2016
Supplemental material, Electronic_Supplementary_Material for The health locus of control concept: Factorial structure, psychometric properties and form equivalence of the Multidimensional Health Locus of Control scales by Angelos P Kassianos, Maria Symeou and Myria Ioannou in Health Psychology ...
Kassianos, Angelos P, Symeou, Maria, Myria Ioannou   +2 more
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A computational approach based on the integration of the equivalent-eigenstrain concept with the eXtended Finite Element Method for general-shaped inclusions embedded in ceramic materials

2015
Tempering and firing practices decrease the strength of ceramic materials such as those used for traditional pottery, due to thermal expansion mismatch between temper particles and ceramic matrix [1]. We study stress concentration around sharp temper inclusions where damaged zones have a toroidal shape (Figure 1) [2].
BENVENUTI, Elena, Sevostianov Igor
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