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Online since: April 2018
Authors: Ida Westermann, Bjørn Holmedal, Siri Marthe Arbo
For dissimilar metal combinations, where the metals to be joined exhibit different mechanical properties, the thickness reduction is especially important as stated by Li et al. [9].
As only the effect of intermediate layer thickness was of interest, the 0,5 mm IF steel plate was annealed at 650°C for 30 min in order to reach the same mechanical properties as the as received plate.
However, the accuracy of about ±10 MPa is sufficient to conclude that after heating to 150°C the mechanical properties are quite similar for the two materials.
These cracks resulted in small steel fragments separating from the steel base during peel-testing, due to the large differences in mechanical properties between the fragments and base metal.
Akbarzadeh, Bond strength and mechanical properties of three-layered St/AZ31/St composite fabricated by roll bonding.
Online since: May 2006
Authors: Seiji Ban, Hiroshi Kono, Akihiko Yuda, Yuichi Izumi, Motoharu Miyamoto, Hisanoro Goto, Miho Machigashira
Introduction Titanium has been applied to various medical and dental treatments, because titanium has excellent mechanical properties and adequate biocompatibility [1].
From a materials viewpoint, the factors that affect the biological properties of dental implants can be divided into the kind of material and its surface condition.
Biochemical properties on the implant surface are affected by various surface treatments, including coating methodologies, roughening procedures, cleaning operations, and sterilization procedures.
The dental implant produced by mechanical cutting has a surface roughness Ra ranging from about 0.08 to 1.3µm [6].
Online since: February 2015
Authors: Zawati Harun, Nurafiqah Rosman
Effects of Hydrothermal Parameters on Synthesized Zeolite Rice Husk Particles NURAFIQAH Rosmana and ZAWATI Harunb * Advanced Material and Manufacturing Centre, Faculty of Mechanical Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat 86400,Johor,Malaysia aafiqahrosman@gmail.com, bzawati@uthm.edu.my Keywords: Rice husk ash, NaY zeolite, hydrothermal.
Because of molecular sieve properties along with high thermal, mechanical and chemical stabilities, zeolite is extensively used as catalyst, adsorbents, ion exchanger, liquid and gas separation, and membrane [4].
However, the synthesis of microsized NaY zeolite has received much attention owing to its special properties, such as of a highly catalytic center, high surface-atom ratio, large surface area, high surface energy and better reto-wear [5].
Properties and Industrial Applications of Rice husk: A review, International Journal of Emerging Technology and Advanced Engineering. 2 (10) (2012) [3] X.
Factors affecting the synthesis of microsized NaY zeolite, Microporous and Mesoporous Materials. 25 (1998) 131–136
Online since: September 2014
Authors: Yan Hong Pan
Therefore, based on the computer hardware and software technology as a strong technical support, from the mechanical properties of the basketball, we simulate the flight trajectory of basketball shooting process, and obtain the good simulation results, which provide technical support for basketball players.
Mechanics Modeling and UDF Program Design in the Basketball Flight Using computer methods to simulate the basketball flight, it needs to s to build basketball mechanical model, including basketball itself and air flow field.
Basketball deformation will affect the flight trajectory of basketball, thus affecting the basketball shooting effect.
Therefore, it needs to consider the factors of shooting speed and angle of shooting in basketball shooting process, adjusting the shot, so as to improve the percentage of hits.
Online since: August 2014
Authors: Husin Wagiran, Azadeh Refaei, M.A. Saeed
Thermoluminescence Properties of Optical Fibers Doped with RE+3 (RE=Sm, Nd) Ions Subjected to X-Ray Irradiation Azadeh Refaei 1, a, Husin Wagiran 1, b and M.A.Saeed 1, c 1Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Malaysia a arefae@yahoo.com, b husin@utm.my, c saeed@utm.my Keywords: Thermoluminescence properties; 6 MV photon X-ray; Glow curve; TL response Abstract.
This paper describes the thermoluminescence properties of RE+3(RE=Nd, Sm) doped optical fiber SiO2.
Recently, thermoluminescence properties of Al–doped and Ge-doped silica optical fibers were investigated [2-10].
Conclusions This research investigates the thermoluminescence properties of Nd, Sm-doped and undoped SiO2 optical fibers.
Nisbeta, Ahmad Taufek Abdul Rahmana, Fatma Issaa, Noramaliza Mohd Noora, Amani Alalawia, Review of doped silica glass optical fibre: Their TL properties and potential applications in radiation therapy dosimetry.
Online since: May 2011
Authors: Te Wei Fan
Factors that affect the brittle fracture strength of connections include: weld defect, residual stress, HAZ, welding parameter.
It needs to incorporate temperature-dependent material properties as shown in table 1.
The material properties are listed in table 1 where yield strength is 350 MPa and elastic modulus is 200 GPa in room temperature.
Due to the mechanical and thermal properties of weld are slightly different from base metal, the same material properties of base metal are used for both.
Stress intensity factors of different crack depth and hold time Fig. 7.
Online since: September 2014
Authors: Radu Cojocaru, Victor Verbiţchi, Lia-Nicoleta Botila, Cristian Ciucă
This fact allows the joining of different types of metals having completely different chemical, physical and mechanical properties and avoiding, at the same time, the formation of inter-metallic phases (unwanted) that currently occur during the fusion welding process.
In the contrive and design of the FSS tool, it is very important to keep in mind the material, geometrical shape and sizes of the shoulder and pin (for the tools with a pin), depending on the properties and characteristics of the materials to join, including their thickness.
The factors that influence the amount of heat developed during the process are: the characteristics of the base metal, the diameter of the tool shoulder, the rotational speed of the tool, the travel speed of the tool and the pressing force of the tool on the base material.
For each couple of base materials (BM1 and BM2) to be soldered by FSS, harmonizing is necessary of all factors that influence the process temperature (Fig. 6).
The factors that influence the quantity and distribution of heat during the FSS process The mode to prepare, clean and place the base materials (BM1 and BM2) must also be respected.
Online since: May 2013
Authors: Elisa Maria Ruiz-Navas, N. Hari Babu, Elena Gordo, Leandro Bolzoni
Nevertheless, powder metallurgy techniques could be used to obtain this alloy with specific properties.
Moreover, titanium has the ability to retain its mechanical properties to relatively high service temperatures; normally up to approximately 500ºC.
Concerning the mechanical properties, the variation in the hardness with sintering temperature was measured by means of a Wilson Wolpert Universal Hardness DIGI-TESTOR 930 tester performing HV30 measurements. 3.
Collings, Materials Properties Handbook: Titanium Alloys, in: A.
Snyder, Effects of Three Interstitial Solutes (Nitrogen, Oxygen and Carbon) on the Mechanical Properties of High-purity Alpha Titanium, Journal of Metals 188 (1950) 277-286
Online since: December 2014
Authors: Jorge Fernandez Dos Santos, Roger Navarro Verastegui, Telmo Roberto Strohaecker, José Antonio Esmerio Mazzaferro, Cíntia Cristiane Petry Mazzaferro
The joining of steel and aluminum alloy A6061-T6 applying the laser pressure welding technology has proven to generate sound welds with good mechanical properties as reported by Nishimoto et al [2].
Zhang et al [9, 10] reported that the joining of hot-dip galvanized steel and pure aluminum AA1060 can be done by the modified Metal Inert Gas process (MIG) obtaining good mechanical properties.
Taguchi methods steps – three factors, two levels and three replications – lead to the best parameters combination shown in Fig. 7.
Hackl, Interfacial microstructure and mechanical properties of aluminum–zinc-coated steel joints made by a modified metal inert gas welding–brazing process, Materials Characterization 58 (2007) 588–592 [10] H.T.
Microstructure and Properties of Friction Spot Welds in a 2-mm Thick Alclad AA2024 T3 Alloy.
Online since: July 2014
Authors: Swamy R. Narayana, Prabhu K. Narayan
The mechanical and thermal properties of the materials of bodies in contact influence the extraction of heat at the interface [10].
Analysis of Variance (ANOVA) technique was used to determine the statistical significance of various factors that affect the thermal contact resistance (TCR).
The factors considered in ANOVA are materials in contact, load and interface materials.
The peak temperature and the heating rate of the cold material depend on thermophysical properties, applied load and the TIM.
Factorial experiments carried out suggest that the applied load plays a significant role in minimizing the thermal contact resistance compared to other factors.
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