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Online since: August 2020
Authors: Zainab Abdul Rdha Thoeny
The particle size, total surface area and particle size distribution were factors affecting plaster properties used for construction.
In the present investigation, an attempt has been made to test the effect of particle size distribution of hemihydrate gypsum on some of physical and mechanical properties.
Physical properties and Chemical analysis of ordinary gypsum.
Plachy, Evolution of Mechanical Properties of Gypsum in Time, International Journal of Mechanics. 5 (2011)1-9
AL-Baghdady, Improving of Mechanical Properties for Juss mortar Using Vegetable and their Plants Fibers, Technology Journal (2010)
Online since: April 2012
Authors: Chiravoot Pechyen, Lerpong Jarupan, N. Thongjun
Efficacy of Activated Carbon In- situ to Oil Palm Frond Paper for Active Packaging on Mechanical Properties N.
It was aimed to investigate the effect of in-situ activated carbon on physical and mechanical properties of the pulp handsheets made from OPF.
That may cause the reduction in mechanical properties of the fabricated handsheets.
It investigates the effect of in-situ activated carbon at different proportions on physical and mechanical properties of OPF pulp handsheets.
With activated carbon in-situ the fibrous OPF handsheets, decrease in density gets mechanical properties to decrease.
Online since: June 2019
Authors: Dietmar Koch, Yuan Shi, Yan Lei Xiu
The influence of different numbers of coupons on the mechanical properties has been identified.
While the mechanical properties of different CMCs have been characterized and evaluated in a large number of studies, only few studies have been published discussing the statistical distribution of their properties.
[17] "DIN EN 658-1: Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 1: Determination of tensile properties," 1999
[19] "DIN EN 658-2: Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 2: Determination of compression properties," 2003
Salem, "Reliability and fracture statistics of highly vitrified ceramics: Effect of technical factors on strength distribution," Construction and Building Materials, vol. 101, pp. 1097-1104, 2015
Online since: June 2012
Authors: Francesco Cardaropoli, Fabrizia Caiazzo, Vincenzo Sergi, Vittorio Alfieri
The relative difference of mechanical properties causes the phenomenon of stress shielding, which has a detrimental effect on the longevity of dental implants.
In addition, these materials are characterised by: low density (40% less than steel), good mechanical properties, acid resistance, no magnetic properties, good heat transfer, connected with thermal conductivity.
Indeed, this factor not only affects the osseointegration, but also mechanical properties in terms of stiffness.
Some factors adopted are constant: scan length of 5 mm, average size of the powder equal to 30 μm, and layer thickness of 30 μm.
Influence of Porosity on Mechanical Properties and in Vivo Response of Ti6Al4V Implants.
Online since: June 2007
Authors: Yeong Maw Hwang, Hung Hsiou Hsu
Friction stir processes (FSP) are important for enhancing mechanical properties of metal sheets, such as the tensile strength, the elongation, etc.
The stress distribution of the tool pin is affected by the thermo-mechanical characteristics of the workpiece in FSP.
The mechanical properties of a welded sheet material have various advantages such as improved strength, finer grain size, better fatigue strength and anti corrosion property.
The thermal-mechanical affect zone (TMAZ) and thermal affect zone (TAZ) occurred under the welding path, i.e. the rotating tool pin causes a TMAZ and TAZ.
Fratini used an inverse identification approach based on a linear regression procedure to develop the material properties.
Online since: December 2018
Authors: Erika O. Avila-Davila, Victor M. Lopez-Hirata, Luis M. Palacios-Pineda, Ignacio Ramirez-Vargas, Luis G. Trapaga-Martinez, Juan M. Alvarado-Orozco, Maria M. Cueto-Rodriguez, M.L. Saucedo-Muñoz
Thus, this study was carried out with the purpose to identify the critical parameters that promote microstructural changes in the Ni-based superalloy and therefore affect the mechanical behavior in this turbine blade.
Introduction Nickel-based superalloys are widely used in severe service conditions because of maintain their mechanical properties even at high temperatures for prolonged periods of time and have a good resistance in corrosive environments [1].
So, this analysis took into account the service conditions of the blade [9] to calculate, with ANSYS software, distribution gradients of temperatures and normal stress on the surface and inside of the blade that modifying its internal structure and consequently its mechanical properties, hardness.
It is known that this structure is obtained as a result of the heat treatment in IN792 to improve mechanical properties in the superalloy [13].
Floreen, Metallurgical Factors Affecting the Crack Growth Resistance of a Superalloy, Metallurgical Transactions A. 8A (1977) 51-55
Online since: September 2014
Authors: Cristina Gentilini, Elisa Franzoni, Gabriela Graziani, Simone Bandini
Rising damp is one of the main issues affecting masonry buildings.
Besides these negative effects, the presence of water in the pores may influence the mechanical properties of building materials.
In the case of masonry structures, the presence of rising damp and salts may cause the deviation of the mechanical properties from the expected ‘ideal’ behaviour [6].
Results and discussion Mechanical and microstructural properties of brick and mortar are reported in Table 1.
Mechanical and microstructural properties of the materials used for manufacturing the triplets.
Online since: June 2014
Authors: Ying Lei Xu
Meanwhile, it had to be stopped and maintenance, seriously affecting work efficiency and increasing economic losses [3, 4].
However, these factors are different to change of the determined system hardware.
Effect of the compression ratio is relatively direct and too large compression ratio will generate more deformation and heat, which affects the mechanical properties of the wire.
Effect of the drawing speed The main impact of the drawing speed is the generated heat on the wire properties.
Effect of the compression ratio is relatively direct and too large compression ratio will generate more deformation and heat, which affects the mechanical properties of the wire.
Online since: August 2019
Authors: S. Muthukumaran, C. Sathiya Narayanan, K. Tejonadha Babu, C.H. Bharat Kumar
A Study on Influence of Underwater Friction Stir Welding on Microstructural, Mechanical Properties and Formability in 5052-O Aluminium Alloys K.
The effect of UWFSW on microstructural developments, mechanical properties, and formability was evaluated and compared.
Grain refinement is an important opportunity to improve the mechanical properties of FS welds.
Tensile properties and fractography analysis The weld metal microstructure has an important influence on the mechanical properties of FS weld.
Che, Improving mechanical properties of dissimilar material friction welds, Appl.
Online since: June 2013
Authors: Hong Zhi Cui, Shu Qing Yang, Ting Peng, Wai Ching Tang
In this study, the cement pastes with different dosages of RLP on RA surface modification were used and the effects on the mechanical properties of the resulting concretes were studied.
The test results showed that the properties of recycled aggregates were not as good as those of natural aggregates, thus resulting in poorer mechanical properties of the recycled aggregate concrete.
This research provides some useful practical insights to improving mechanical properties of recycled aggregate concrete.
Experimental work Properties of recycled aggregates.
Among all, the porosity of aggregate is the most important factor.
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