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Online since: January 2012
Authors: Halit S. Türkmen, Onur Coskun
Mechanical properties, bending stiffness and free vibration frequency of the sandwich beam are investigated.
These outstanding properties are also followed by lower lateral deformations, higher buckling resistance and higher natural frequency [1].
According to the characteristic of these materials, which are more complex than the metallic ones, a damage due to fatigue could affect unfavorably the interactions of face sheets, core and matrix form that may give overall effect on the sandwich structure properties.
Notch factor and an amplitude factor were described to consider a prediction model.
A map of a failure affected by material, beam geometry and loading conditions was described.
Online since: January 2011
Authors: Mohd Afendi, Tokuo Teramoto, Akihiro Matsuda
There are many critical factors affecting the structural integrity and reliability of scarf joints.
In the literature, the most commonly considered factors are joint geometry, mechanical properties of adhesive and adherend, bonding surface as well as loading condition.
In our previous study [3], the mechanical properties of the bulk epoxy adhesive were measured using the dog-bone specimen in uniaxial tension, and the pertinent results are tabulated in Table 1.
Table 1 Mechanical properties of materials.
The adherends were assumed to remain elastic materials and the mechanical properties data were taken from Table 1.
Online since: September 2013
Authors: Hai Yang Wang, Ping Li, Wan E Wu
The influence factors, such as reactant concentration, reaction temperature and ultrasonic frequency were discussed.
However, with the rapid development of modern military technology and weapons systems upgrading, the existing hot-pressing magnesium fluoride material has not been able to meet the requirements of high-speed missile on the mechanical properties of the material.
The ultrasonic can significantly affect the product size and morphology.
(2) Reactant concentration, temperature, ultrasonic frequency affects experiments
[5] Cao Minhua, Controllable Preparation and properties of low-dimensional nanomaterials [D] .Northeast Normal University, 2006.05.10
Online since: November 2011
Authors: Yi Dan Zhou, Tao Wang
The cutting condition and material properties are summarized in Table 1.
Table 1 Cutting condition and Material properties of 42CrMo for FEM simulations Cutting parameters 42CrMo workpiece properties Cutting speed (m/min) 100 Yield strength(MPa) 930 Tool point angle(°) 140 Tensile strength (MPa) 1080 Tool Diameter(mm) 10 Section shrinkage (%) 50 Tool clearance angle(°) 7 Hardness (HB) 270 Tool helix angle(°) 30 Impact toughness (J/cm2) 78 Tool chisel edge angle(°) 48 Elongation (%) 15 Tool edge radius(mm) 0.03,0.06,0.10 Impact energy (J) 63 Geometric Model.
In this paper, the highest simulation temperature is about 1411℃.The cutting process is a very complicated deformation process, there are many factors need to be considered.
Due to the limitation of calculate condition and mesh re-classified, the curves of the maximum temperature sometimes fluctuate dramatically, however, it does not affect the analysis of simulation.
However, it does not affect the study on the simulation.
Online since: July 2013
Authors: Tohru Suzuki, Kouichi Nakashima, Kenta Yamashita, Kazuki Maeda, Ichiro Fujii, Satoshi Wada, Yoshihiro Kuroiwa
Microstructure control of potassium niobate porous ceramics and their sensor properties Kazuki Maeda1,a, Kenta Yamashita1, Ichiro Fujii1, Kouichi Nakashima1, Tohru S.
Their piezoelectric properties were measured and a relationship between porosity, pore size, and sensor properties was studied.
Then, a relationship between porosity, pore size, and sensor properties was studied.
The dielectric properties of the ceramics were measured at room temperature and 1MHz using impedance analyzer (Agilent Technologies Co., HP4294A).
Their piezoelectric properties were measured and a relationship between porosity, pore size, and sensor properties was discussed.
Online since: September 2014
Authors: Rustam Usmanov, Vera Murgul, Ivan Mrdak, Marina Rakočević, Nikolay Vatin, Ljiljana Žugić
Analysis of the influence of dynamic properties of structures on seismic response according to Montenegrin and European regulations.
All these factors affect the dynamic characteristics of the structure, which directly affect the response of the structure during an earthquake.
A linear-elastic dynamic analysis of structures can be described by the following dynamic properties: stiffness, mass and damping.
In fact, by varying the number of floors, the mass changed as well as the stiffness of the elements of the structure, while other factors affecting the seismic response of the structure are considered invariably.
Murgul: Improvement of the energy efficient properties of the houses in the historical area of Saint-Petersburg, Architecton: Proceedings of Higher Education, 4 (40) (2012), pp. 54-62 [10] A.
Online since: June 2007
Authors: C.H. Lee, Kyoung Hoan Na, Seong Joo Lim, Ho Joon Choi
The formed parts under a rotary swaging process have good mechanical properties such as surface hardness, elastic limit, tensile strength, compressive strength and bending strength since microstructures of formed materials exhibit fiber structures.
Suffredini [3] investigated the influence of the rotary swaging process on mechanical properties.
The results predict the proper process variables affecting the quality of tube and solid bar product such as dimensional precision and surface roughness.
Thus these factors are considered and selected as important process parameters for cold experiment by the rotary swaging.
From these results, it is found that the dimensional precision of solid bar is slightly affected by variation of the forming speed.
Online since: September 2013
Authors: Abdelali Hayoune, Nacereddine Titouche
During aging at a relatively low temperature (100 °C) of the PA material, a small increasing of the mechanical properties was detected, which was explained by the formation of atomic clusters, GP zones and β” phase.
During aging at relatively low temperature (100 °C), in contrast to the 75 % deformed material that shows a small variation in their mechanical properties, the mechanical properties, of the 30 % deformed material, are almost constant.
Factors such as low degree of activation during irradiation, high corrosion resistance in vapour–water media, high weldability, medium strength, high extrudability have supported the usage of the 6xxx class of alloys as structural materials in the industry of nuclear research reactors [1].
So, the slight increase of the mechanical properties can be, properly, attributed to the formation of an additional amount of both of clusters, GP zones and β” phase.
Aging of the heavily deformed material, at relatively higher temperature (140 °C), leads to a fast decreasing of the mechanical properties.
Online since: July 2021
Authors: Jyoti Vimal, Nikhil Aditya
Introduction Composite materials have wide application because of their versatile properties which include high strength to weight ratio, high stiffness to weight ratio, design flexibility, good damping properties, and corrosion resistance[1].
The results revealed that there is an enhancement in the mechanical properties of composite materials due to hybridization.
They also performed a parametric study to examine the effect of ply orientations, material properties, element type, and column size on the buckling strength of plates.
Mechanical properties for the same are shown in table 1.
Mechanical properties of the E-Glass/Epoxy unidirectional composite material [17] E1 [Mpa] E2=E3 [Mpa] ν12=ν13 ν23 G12=G13 [Mpa] G23 [Mpa] 45000 10000 0.3 0.4 5000 3846.2 ANSYS workbench has a dedicated module for the analysis of composite materials which is known as ACP (ANSYS composite prepost).
Online since: October 2006
Authors: Cornel Miclea, Anca Gheorghiu, Corneliu Florin Miclea, Constantin Tanasoiu, I. Spanulescu, M. Cioangher
Structure and magnetic properties of strontium hexaferrite nanopowders prepared by mechanochemical synthesis C.
The magnetic properties of hexaferrite nanopowder, both compacted and dispersed in a nonmagnetic matrix were determined.
The magnetic properties of such powders vary from one material to another.
Generally, the coercive field seems to be the most affected property by factors such as particle size and defects introduced during preparation.
The magnetic properties (coercive field and saturation magnetization) of the synthesized nanopowders by mechanical activation were measured at room temperature.
Showing 11261 to 11270 of 26166 items