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Online since: February 2024
Authors: Saiful Nizam Tajuddin, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Zulkifli
Several factors which influenced the air permeability of the fabric are fabric density, warp and weft linear density, weaving structure, and fibre content of the fabric [42,43].
Kumar, H.S Nalwad, A review: Antimicrobial properties of ZnO nanomaterials.
Lavasani, Antimicrobial properties of Pomegranate (Punica granatum L.) as a Tannin rich Fruit: a review.
Eltahan, Structural parameters affecting tear strength of the fabrics tents, Alex.
Amer, Comparison of functional properties of woven and knitted denim fabrics.
Online since: May 2011
Authors: Xin Hua Chen, Yuewen Li
Impact rupture surface of the composites was observed by scanning electron microscope(SEM), and its load deformation temperature(HDT) and mechanical properties were tested.
Properties Testing and Morphology Observation: HDT was tested according to ISO75-2:2003(A) on RV-300 thermal deformation Vicat softing point temperature tester.
The improvement of the mechanical properties can be related to the improved compatibility confirmed by SEM experiments.
When BPO was used as initiator, the mechanical properties of WPC can not be improved effectively because BPO was decomposed in advance
Although the mechanical properties were both remarkable improved whether WPC was extruded at 180˚C or at 200˚C, the optimal dosage of MAH was different when extrusion temperature changed.
Online since: September 2018
Authors: Feng Liu, Wei Xiao Du, Li Zhan, Bao Zhen Shan, Woon Bong Hwang
Material’s hydrophobicity depends on the tension between water and solid surface, and two factors should be included: the surface free energy and roughness.
When the concentration to 1.5mol/L, surface with distribution uniformly of micron structure is obtained, the water gas area is larger than the water surface area, the super hydrophobic properties are gained.
The Influence of the Roughness Factor on the Surface CA.
It can be deduced that the surface roughness can amplify the hydrophilic /hydrophobic properties of the surface material.
It can be seen that the surface roughness can amplify the hydrophilic /hydrophobic properties of the surface material.
Online since: August 2012
Authors: Peng Cao, Guian Wen
Contaminants, either in the original titanium powder, from the binder, or from the sinter furnace atmosphere, are usually a big concern for the component designers because these impurities significantly affect the mechanical properties of the final products [5].
Secondly, since most engineering plastics have a wide range of decomposition temperatures up to 500 °C [17], the polymer must be carefully chosen by the factors such as polymer structures, molecular weights, crystallinity and impurities.
As an example, Tijet, a German company, is using a wax-based binder system, which contains 32vol% mixture of PE, PW and SA [23] to produce engineering components such as bone screws for medical implants from Ti-6Al-4V and Ti-6Al-7Nb with mechanical properties equivalent to those of wrought alloys.
In spite of the success of PEG binder, one report discouraged the use of PEG because PEG results in increased oxygen content in the sintered parts due to the incomplete removal and hence adversely affects mechanical properties [26].
Takaki, Effects of pores and oxygen content on mechanical properties of a sintered Ti-4 mass% Cr alloy, Journal of the Japan Society of Powder & Powder Metallurgy 42 (1995) 911-917
Online since: November 2006
Authors: Seung Woo Lyu, Dae Seok Han, Tae Young Yang, Young Min Park, Hong Chae Park, Jae Myung Lee
Introduction Aluminum oxide (Al2O3), because of its high mechanical properties, good thermal and chemical stability and cost, is widely used as a monolithic ceramic and as a matrix material for composites.
To improve the mechanical properties of ceramic composites, the transformation of dispersed and/or precipitated tetragonal zirconia (t-ZrO2) particles to monoclinic (m-ZrO2) in ceramic matrix is used extensively [1, 2].
In order to improve mechanical properties of ceramics for structural applications, a great deal of attention has recently been concentrated on preparation of layered composites [3].
In the present work, symmetric three-layer Al2O3/t-ZrO2 composites have been fabricated by freeze casting, and their mechanical properties investigated.
The reasons can be explained in terms of two factors.
Online since: May 2011
Authors: Wen Xian Tang, Jun Jie Sun, Bin Wang
The results could greatly affect the dynamic properties of mechanism.
In order to adapt the mechanical trend of high speed and precision, the dynamic balancing technology of main driving mechanism has become one of the key technologies of modern cold rolling mills.
Fig.1 diagram of crank-slider mechanism (1) Where Array reflects inertia force and inertia moment; Array reflects reaction of kinematic pair and input torque. 2) Dynamic property indexes of mechanism The dynamic property indexes reflect inertia effect of mechanism.
Among dynamic property indexes of optimal balance system in main driving mechanism of cold rolling mill, balance coefficient and balance position play great influences on the optimal property of each index.
A mapping relationship between fitness function and dynamic property index should be constructed.
Online since: March 2015
Authors: Li Hua Zhang, Ling Lin Zhang, Bo Wang, Min Zeng
Results show that the influence of 3 factors on the comprehensive evaluation: The slice thickness > Microwave power > The pulse ratio.
Microwave heating won't produce harmful substances and does not affect the quality of food, so it will not cause ecological damage.
The drying process will select index and determine the factors and level of factors, so apply RSM studying factor interactions on ginger intermittent microwave drying process, the drying characteristics of ginger in the intermittent microwave drying conditions and explore the influence of different factors on the drying rate, energy consumption and Chromatic aberration.
The experimental values and theoretical values are consistent and the reliability and rationality of the model are proved. 3) RSM directly analyzes the influence factors of the interaction term and obtains that the interaction of slice thickness and microwave power has significant effect on the comprehensive index, but other interaction factors not.
Effects of microwave drying on the aging properties of vulcanized natural rubber of hot oxygen "[J]."
Online since: July 2011
Authors: Chang Jiang Pan, Yu Dong Nie, Yun Xiao Dong
Controlling surface properties of scaffolds materials can be used to control cell morphology and further direct cell function.
The type of micropattern can evidently affect the production of collagen II and VI, indicating that BMP-2 micropattern can modulate cell function.
For joint cartilage, the mechanical, biochemical, inflammatory, or immunological stimuli can give rise to ECM synthesis and decomposition disbalance of chondrocytes, further resulting in degradation of cartilage matrix.
The main feature of osteoarthropathy is the ECM degradation of cartilage chondrocytes concurrently with the release of inflammatory factors [6].
The as-prepared protein micropatterns can significantly affect human chondrocytes adhesion, spread, growth and protein expression.
Online since: August 2008
Authors: José Renato Coury, M.A.F. Daher, M.V. Rodrigues, Vádila Giovana Guerra, José Antônio Silveira Gonçalves
However, these droplet characteristics are partly due to the jet properties, such as: jet velocity, diameter, trajectory, penetration in the gas current and atomization mechanisms.
Particularly, the jet penetration is one of the most important factors in the determination of the space distribution of the droplets.
The size of the droplets generated in the atomization process is an important parameter, once it affects the particle collection within the scrubber.
These interactions certainly affect the size of the droplets generated inside the scrubber.
Tanasawa: Transactions of the Society of Mechanical Engineers Vol. 4 (1938), p.86
Online since: December 2012
Authors: Bin Deng, Chen Hu, Ning Wen, Shan Yu Zhou, Long Quan Shao, Jun Ai, Lin Lin Wang
Introduction Nowadays, all-ceramic crowns and veneers are amongst the best choice for aesthetic treatment in the anterior region due to the natural appearance and fair mechanical properties.
There are many factors that influence on the color stability of the resin cements including exposure to environment factors, ultraviolet irradiation, heat, water, which may cause a color mismatch in an otherwise acceptable ceramic restorations.
It exhibits outstanding esthetic features and adequate strength properties.
In addition, the physicochemical properties of monomers used in a resin matrix may influence resistance to staining.
Bolay, Micromechanical properties of veneer luting resins after curing through ceramics, Clin Oral Invest. 16 (2012) 139-146
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