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Online since: June 2009
Authors: Burhanuddin Yeop Majlis, Fatimah Lina Ayatollahi
This paper presents material properties of a micromachined mesoscopic acoustic speaker for hearing aid applications.
Thickness is one of the important design parameters affecting the device deflection behavior.
Coil width is one of the important design parameters affecting the device deflection behavior.
Material properties for micro-machined mesoscopic acoustic speaker have been performed.
The chosen materials represent balances between competing factors, for example, membrane thickness and fabrication processes limit.
Online since: February 2025
Authors: Dova Novi Salantua, Liliani Liliani, Chintya Gunarto, Aning Ayucitra, Indah Epriliati, Dian Retno Sari Dewi, Gogot Setyo Budi, Edward Alexandria, Herman Hindarso
Various types of rubber can be used for modifications that can improve the mechanical properties of asphalt, including crepe rubber.
To increase the lifetime and durability of pavements, improvement of asphalt mechanical properties must be done, such as addition of polymers.
Phase separation in modified asphalt products is influenced by several factors, including gravity, diffusion, density and viscosity.
This phase separation is influenced by many factors including gravity, diffusion, density, and viscosity.
However, storage temperature is the main factor affecting the phase separation between asphalt and polymer [7, 31, 32, 35, 36].
Online since: September 2016
Authors: Raoul François, Dario Coronelli, Hiep Dang, Wen Jun Zhu
Previous studies [1] [2] show that changes in geometry, material properties and load-bearing mechanisms must be considered.
Both generalized corrosion affecting the surface of the bar and the localized pits, if present, must be considered.
Material properties Mean values of the properties are determined, for use in the models compared to the tests results.
The reduced cross-sections and material properties with the corrosion effects are used.
Diez, Factors controlling cracking of concrete affected by reinforcement corrosion, RILEM Mat.
Online since: February 2007
Authors: Jow Lay Huang, Chien Cheng Liu
The effects of TiN addition to Si3N4 on its mechanical and wear properties were investigated.
Introduction Silicon nitride is a very attractive ceramic material because of its excellent mechanical properties at both ambient and elevated temperatures.
One approach to improving the mechanical properties of brittle materials in general is through composite strengthening techniques, such as fiber, whisker or particulate-reinforced ceramics [2-5].
This work investigated the mechanical properties of silicon nitride based composite with secondary phase TiN addition, and examines the influence of friction coefficient for different load under reciprocated sliding wear test.
Tribological factors include the friction coefficient and the wear coefficient (W), W=V/LD (mm3N -1m-1) with V (mm3) the wear volume, L (N) the normal force and D (mm) the sliding distance [19].
Online since: December 2010
Authors: Zhuo Hao Xiao, Ming Hua Luo
Heat treatment condition, including the temperature and hold time of nucleating and crystallizing, is one of the key factors that affect the microstructure and properties of LAS glass-ceramics.
Preparation, structural and thermo-mechanical properties of lithium aluminum silicate glass-ceramics [J].
Thermal expansion properties of some synthetic lithia minerals [J].
Preparation and thermal properties of P2O5 doped Li2O-Al2O3-SiO2 glass-ceramics [J].
The study of the properties and crystallization on LAS glass-ceramics.
Online since: October 2007
Authors: Ping Dong, Rui Wen Li
Both of the dimension and strength were affected by the complex residual stress distribution in the assembled tube.
Moreover, many factors may affect the welding residual stress, such as the initial stress from over fitting, a complex thermo-elastic-plastic constitutive relation and welding loading and unloading process, etc.
Because the contact boundary condition at the interface during weld process may vary with time, a coupled thermal and mechanical analysis was adopted.
The physical properties and mechanics properties of material are assumed to be temperature dependent.
For mechanical aspect, a special fixture is used for fixing one end, and the other end is constrained.
Online since: January 2010
Authors: Dong Wang, J. Bi, Z. Zhang, Z.Y. Ma, B.L. Xiao
The strength of the NOS sample reached up to 85% of the 2024Al alloy with the joint failing in the heat affected zone on the 2024Al side.
While the microstructural evolution during FSW was subjected to a detailed examination, no mechanical properties of the joint were reported [6].
The aim is to investigate the effect of welding conditions on the microstructure and mechanical properties of the joints.
Some pure Al (denoted by A in Fig. 1a) was observed in the bottom of the thermo-mechanically affected zone (TMAZ) on the retreating side, which was the Al-clad layer of the 2024Al aggregated on the retreating side during FSW.
This implies that some other factors affected the strength of the OS samples.
Online since: February 2012
Authors: Łukasz Madej, Konrad Perzynski
This combination of layers is widely used in medicine for improvement mechanical properties and biocompatibility behavior of bio elements.
The multi layer structures improves mechanical and biocompatibility properties of medical implants.
The transitional metal nitrides such as TiN are widely used as hard protective coatings due to their chemical stability and excellent mechanical properties.
Swain, Investigation of the stresses and stress intensity factors responsible for fracture of thin protective films during ultra-micro indentation tests with spherical indenters, Th.
Lee, Effects of the thickness of Ti buffer layer on the mechanical properties of TiN coatings, Surf. and Coat.
Online since: April 2004
Authors: P. Zeng, Gang Fang
In fine blanking process, some factors such as punch-die clearance, punch velocity, tool geometry and the mechanical properties of the materials influence the quality of cross-section and dimension precision.
Selecting some different tool dimension and processing factors, we can obtain workpiece with the different quality.
In fine blanking, roll-over high is affected by thickness, geometry and properties of material, reverse press and V-ring factors.
Fig.6 Effect of tooth distance a on roll-over high h 5 CONCLUSIONS In this paper, under several factors setting, the fine blanking processes with V-ring are simulated.
Li, Stamping process technology, (Beijing, Mechanical Industry Press,1982, in Chinese) 2.
Online since: June 2012
Authors: Jan Pěnčík, Libor Matějka, Tomáš Pospíšil, Libor Matějka, Alena Kalužová, Darina Dostálová
Decisive properties in choosing the materials to be applied include mainly the coefficient of thermal conductivity, density, compressive strength and water absorption.
This linear polymer contains methyl groups (–CH3) in its formula, on whose spatial arrangement its physical properties depend.
Due to the thermoplastic properties of polymers the composite material is produced in electric furnace.
The weight ratio and the mutual arrangement of layers of binder and filler affect the thermal technical and mechanical properties of composite.
Ehrenstein: Polymeric Materials : Structure - Properties - Applications.
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