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Online since: October 2013
Authors: Y.Y. Zhou, Feng Hua Zhao, Yong Sheng Qi
The mechanical properties of the whole wall and the wall with openings under vertical loads are analyzed by nonlinearity finite element method (NFEM).
There are many factors can affect the mechanical properties of FQQB under vertical loads, such as concrete strength, diameter of inclined plug wire, load form, etc.
However, little investigation has been carried out on the mechanical properties of FQQB with openings, it is seldom reported.
Results Comparison of Test and FEM Simulation By the experimental results [1], the analysis is conducted in load form, wire diameter and other factors affect the mechanical performance of FQQB.
Jiang, Thermal and Mechanical Properties of the Concrete Sandwich Composite Wall Panels.
Online since: May 2005
Authors: A. Chrysanthou, Li Han, Ken W. Young, R. Hewitt, J.M. O'Sullivan
The mechanical properties of the NG5754 alloy are listed in Table 1.
The mechanical properties of the pre-strained NG5754 had changed as a result of pre-straining and are shown in Table 2.
Compositions and Mechanical properties of 5754 MECHANICAL PROPERTIES Young's Modulus (GPa) Tensile strength (MPa) Elongation Hardness (Hv) 70 240 22% 68.5 NOMINAL COMPOSITION IN WEIGHT% (BALANCE Al) Si Fe Cu Mn Mg 0-0.40 0-0.40 0-0.10 0-0.50 2.60-3.60 Table 2.
Mechanical Properties of pre-strained 5754 MECHANICAL PROPERTIES Pre-strain level Tensile strength (MPa) Elongation (%) Hardness (HV) 3% 254 20 73 5% 261 18 77 10% 276 16 86 The original NG5754 and the pre-strained NG5754 sheets were used to produce four groups of samples designated SG0, SG3, SG5 and SG10.
These factors contributed to the increase in the shear strength of the riveted samples as the amount of pre-straining level increased.
Online since: May 2014
Authors: Jorge López-Cuevas, M. León-Carriedo, C.A. Gutiérrez Chavarría, M.I. Pech Canul, J.L. Rodríguez Galicia
However, is necessary to consider that during the processing stage could originate defects or heterogeneities in materials that can adversely affect the mechanical properties during service [2].
Furthermore, the development of a uniform microstructure in the green parts improves both thermal consolidation and final mechanical properties [4].
General speaking, the assessment and quantification of these mechanical properties is done experimentally by mechanical testing mainly based on ASTM compression tests [9,10].
As was mentioned, zircon particles may affect the mechanical properties hence the Young and the fracture modulus was evaluate in all samples.
In addition, by mixing alumina and zircon particles it is possible produce composites with a wide range of mechanical properties that can be used in a wide range of structural applications.
Online since: September 2016
Authors: Shrutee Nigam, Siba Sankar Mahapatra, Saroj Kumar Patel
With metallization the plastic gains the properties like thermal conductivity, strength and hardness.
This work makes an extensive study to analyze the factors that are significantly affecting the wear nature of the deposited coating and to obtain an optimal combination of process parameters that results in a coating which adherant enough and has the lowest wear rate.
There are five basic controlling factors in like layer thickness, raster angle, air gap, part orientation, raster width in FDM route [16-18].
Factors which are significantly affecting the wear of the coating are raste angle, voltage and current.
Valiulis, Analysis of wire arc spraying process variables on coatings properties, Journal of Materials Processing Technology 175 (2006) 206-211
Online since: August 2017
Authors: Peter Šugár, Jana Šugárová, Miroslav Sahul, Martin Frnčík
It is the process in which the material’s thermophysical properties rather than mechanical properties determine the machinability.
Specific mechanical and physical properties of structural ceramics cause serious limitations toward machining into desirable components using conventional machining techniques.
These chosen parameters and its levels are summarized in Tab. 1, but a number of experiments required by a 3k full factorial design having four factors is 81.
Ten testing cavities were manufactured, each with a specific combination of input factors.
Factors and its levels used in effect of the scanning speed on the machined surface quality and MRR analysis Factors Levels Scanning speed vs (mm.s-1) 1000; 1200; 1400; 1600; 1800; 2000; 2200; 2400; 2600; 2800 Repetition rate PRR (kHz) 50 Power I (W) 52 Laser tracks distance s (μm) 10 Table 5.
Online since: December 2024
Authors: Markku Keskitalo, Mikko Hietala, Antti Järvenpää, Jari Arvola
Mechanical properties altered post-welding, with yield strength decreasing from 749 MPa to 732 MPa.
Laser welding has emerged as a preferred method for joining UHS steel components due to its precision, high welding speeds, and minimal heat-affected zones, which are critical for preserving the material's inherent mechanical properties [8-10].
Mechanical properties of the UHS steel welding wire.
Mechanical properties of WAAM UHS steel and WAAM UHS steel laser weld.
Areas with lower mechanical properties are more susceptible to fatigue crack initiation and propagation.
Online since: January 2019
Authors: Dian Xiu Xia, Shou Ren Wang, Xiao Dong Zhang
And then it will affect the subsequent martensitic phase transition, and eventually affect the comprehensive properties of the steel [3-4]. 51CrV4 steel has good mechanical and technological properties, and has been widely used in various fields.
The quenching process was optimized and the austenite grain, microstructure and mechanical properties were analyzed.
Fig. 3 Effect of heating temperature on austenite grain size of test steel The factors affecting the austenite grain size mainly include austenitizing temperature, alloying elements and holding time.
Because it can affect martensitic transformation and further affect the comprehensive properties of steel [12].
Effect of Austenitizing Temperature on Mechanical Properties of Test Steel.
Online since: April 2009
Authors: L. Wang, Diran Apelian, Makhlouf M. Makhlouf
In this study, we optimized the mechanical properties of A380 alloy by optimizing its chemical composition.
These curves (equations) are used to tell the direction in which an element affects a property, but, in some cases, the predicted values deviate from the measured values.
In fact, these formulas are the trend equations and they are used to estimate the results (e.g. properties) when the factors (alloying elements) are within their tested ranges, provided that the effects of the factors are linear and their interactions are negligible.
It has been utilized to develop alloys for high thermal conductivity, as well as for enhancing mechanical properties of alloys.
Alloy compositions and predicted properties.
Online since: April 2015
Authors: N.V. Martyushev, Sergei Yu. Tarasov, Anton Viktorovich Korchmit, Olga S. Kvashnina
Structure and Properties of Multicomponent Tin Leaded Bronzes upon Die-casting Depending on Pouring Temperature Anton V.
This work presents the characteristic properties of powdered materials sintering under conditions of liquid-phase sintering.
The structure and properties of tin bronze casts are affected by a set of technological factors such as pouring temperature (heat content of the melt), heat storage capacity of the mould (cooling rate), rotational speed of a casting mould (in centrifugal casting), rate of pouring the melt into a mould, mould temperature, and some others.
The mechanical properties have been determined by a modern testing machine MIRI-100K with a computerized control and analysis of mechanical parameters [3-6].
Thus, pouring temperature is an important factor affecting the formation of the multicomponent tin leaded bronze (with zinc and nickel content) structure and eventually determining its properties.
Online since: November 2014
Authors: Andrzej Komorek, Paweł Przybyłek, Dawid Brzozowski
This article presents the results of the influence of solar radiation (UV) on the strength properties of laminates with different types of reinforcement.
Introduction Aircraft parts, while in interaction with the natural environment, are exposed to the destructive influence of weather conditions as well as the factors that shape them together with local environmental changes.
UV radiation brings about the build-up of photooxidation mechanisms; therefore, it may be included in the group of atmospheric degradation factors.
Appearance of composite surface after impact loading: a) matrix cracks, b) area of delamination In the next phase, we specified mechanical properties of the newly prepared and damaged laminates.
These results may indicate a considerable impact of UV radiation on the strength properties of carbon fibres in the polymer matrix.
Showing 3391 to 3400 of 26166 items