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Online since: December 2012
Authors: Marco Valente
The structure was designed according to the provisions of Eurocode 8 for a peak ground acceleration (PGA) equal to 0.35g with a type 1 response spectrum, ground type A, 5% viscous damping and behaviour factor q=6.
In the numerical models of the frame the different values of the conventional shear connection degrees η=N/Nf are achieved by retaining the position of the studs and changing their mechanical properties.
The change of the shear connection degree only slightly affects the global behaviour of the composite frame in terms of roof displacement and base shear.
In the numerical models of the frame the different values of the conventional shear connection degrees η=N/Nf are achieved by retaining the position of the studs and changing their mechanical properties.
The change of the shear connection degree only slightly affects the global behaviour of the composite frame in terms of roof displacement and base shear.
Online since: December 2013
Authors: Mohd Nazif Farhan, Mohd Faizal Mohideen Batcha, Sulastri Sabudin
DRYING CHARACTERISTICS OF SEVERAL AGRICULTURAL PRODUCT: EFFECT OF DRYING TEMPERATURE
Mohd Nazif Farhana, Mohd Faizal Mohideen Batchab and Sulastri Sabudinc
1Faculty of Mechanical and Manufacturing Engineering,
Universiti Tun Huessin Onn Malaysia, 86400 Parit Raja,
Batu Pahat, Johor, Malaysia
amymnaziff@gmail.com, bmfaizal@uthm.edu., csulastri@uthm.edu.my
Keywords: Drying, drying rate, drying temperature, moisture ratio, agricultural products
Abstract.
In some cases, wanted or unwanted biochemical or chemical reaction will leading to transform or change in texture, colour, odour or other property of solid product.
For example, when biogas is obtained from an anaerobic digestion process the percentage of solids present in the digestate affects the gas yields.
It was observed that main factor influencing drying kinetic is drying air temperature.
This may be attributed to the physical property of the fruit which has sticky and wet layer.
In some cases, wanted or unwanted biochemical or chemical reaction will leading to transform or change in texture, colour, odour or other property of solid product.
For example, when biogas is obtained from an anaerobic digestion process the percentage of solids present in the digestate affects the gas yields.
It was observed that main factor influencing drying kinetic is drying air temperature.
This may be attributed to the physical property of the fruit which has sticky and wet layer.
Online since: February 2007
Authors: Kyo Han Kim, Byung Ju Choi, J.W. Park, S.I. Yeo, Jo Young Suh, Y.T. Jung
Discussion
Modification of an implant surface can improve the mechanical and biological properties of
implants [11].
Cytocompatibility of biomaterial is the most important factor in clinical use.
It is suggested that anodized surfaces affect early cell response and that this effect on osteoblast is increased in accordance with amount of Ca and P in the oxide layer.
Cytocompatibility of biomaterial is the most important factor in clinical use.
It is suggested that anodized surfaces affect early cell response and that this effect on osteoblast is increased in accordance with amount of Ca and P in the oxide layer.
Online since: March 2020
Authors: Vladimir Luzin, Maxim Avdeev, Filomena Salvemini, Anna Sokolova, Sue Gatenby, Min Jung Kim, Francesco Grazzi, Anton Tremsin, Chris M. Wensrich, Alexander Gregg
Many factors such as historical events, politics, economy and culture contributed in shaping the evolution of the manufacturing techniques.
In contrast to standard analytical techniques which mainly require sampling, neutron imaging and diffraction methods are established non-invasive scientific analytical tools for qualitatively and quantitatively characterize the composition and the properties of the bulk in Heritage materials [4-9].
A novel method, the Bragg-edge neutron transmission, combines imaging and diffraction to obtain a spatially resolved map of the microstructural properties of the bulk material.
In the attempt to assign the manufacturing tradition of the un-known sample, the data obtained from the well-known blades were used to build up a reference database of signatures properties, such as composition, porosities, residual stress, texture, inclusions, which are related to the manufacturing process.
Its value seems to be affected by a lot of texture variation, therefore part of it can be not just residual strain values, or change of lattice constant only due to change in composition.
In contrast to standard analytical techniques which mainly require sampling, neutron imaging and diffraction methods are established non-invasive scientific analytical tools for qualitatively and quantitatively characterize the composition and the properties of the bulk in Heritage materials [4-9].
A novel method, the Bragg-edge neutron transmission, combines imaging and diffraction to obtain a spatially resolved map of the microstructural properties of the bulk material.
In the attempt to assign the manufacturing tradition of the un-known sample, the data obtained from the well-known blades were used to build up a reference database of signatures properties, such as composition, porosities, residual stress, texture, inclusions, which are related to the manufacturing process.
Its value seems to be affected by a lot of texture variation, therefore part of it can be not just residual strain values, or change of lattice constant only due to change in composition.
Online since: September 2012
Authors: Jun Tian, Zi Qiong Shi
PVD preparation process of (TiN + CrN) / CrAlN superhard nanocomposite multilayer coatings
Jun Tian1, a, Ziqiong Shi1,b
1College of Mechanical Engineering, Dongguan University of Technology, Dongguan, 523808, China
a841608534@qq.com, b569332129@qq.com
Keywords: PVD technology, nano-composite multi-layer, preparation
Abstract.
These coatings formed by the combination of nanolayers, and some may be too far because the physical properties of the nano-layer of different composition and the difference of the matrix, such as thermal expansion coefficient of the coating will have a greater internal stress, making the coating to break or fall off[7-8].
The Al content of CrAlN department is another important factor to affect the coating hardness and antioxidant capacity.
These coatings formed by the combination of nanolayers, and some may be too far because the physical properties of the nano-layer of different composition and the difference of the matrix, such as thermal expansion coefficient of the coating will have a greater internal stress, making the coating to break or fall off[7-8].
The Al content of CrAlN department is another important factor to affect the coating hardness and antioxidant capacity.
Online since: November 2012
Authors: Li Hui Yang, Ying Hao Chen, Shann Chyi Mou
Design and Analysis of a Ultrasonic Sliding Platform
Shann-Chyi Moua*, Li-Hui Yanga, Ying-Hao Chenb
aDepartment of Mechanical Engineering, Ching Yun University, 32097 Zhongli, Taiwan
bDepartment of Engineering and System Science, National Tsing Hua University, 30013 Hsinchu, Taiwan
* Corresponding author.
Because the propeller actuator is driven by the direct touch, thus the preload between the actuator and the platform will directly affect the movement features of platform.
(a) The structure diagram of propeller actuator; (b) The 3-D diagram of propeller system power, higher quality factor and superior non-touchable levitating force.
(a) The dynamic diagram of sliding vibrator; (b) The displacement curves of sliding vibrator with the x, y and z-axis under various frequencies Properties Measurement Fig. 6(a) indicates the measurement for the friction coefficient of sliding platform.
Because the propeller actuator is driven by the direct touch, thus the preload between the actuator and the platform will directly affect the movement features of platform.
(a) The structure diagram of propeller actuator; (b) The 3-D diagram of propeller system power, higher quality factor and superior non-touchable levitating force.
(a) The dynamic diagram of sliding vibrator; (b) The displacement curves of sliding vibrator with the x, y and z-axis under various frequencies Properties Measurement Fig. 6(a) indicates the measurement for the friction coefficient of sliding platform.
Online since: January 2012
Authors: Takaomi Itoi, Mitsuji Hirohashi, Ryu Ichikawa
These Mg alloys were prepared by extrusion or rolling processes and indicated excellent mechanical properties [2,3].
When a stress is loaded parallel to the basal plane, schmid factor for basal plane is negligible, kink deformation is initiated.
From these results, the kink deformation significantly affects deformation of the LPSO phase and contributes the better rollability compared with pure-Mg at room temperature.
When a stress is loaded parallel to the basal plane, schmid factor for basal plane is negligible, kink deformation is initiated.
From these results, the kink deformation significantly affects deformation of the LPSO phase and contributes the better rollability compared with pure-Mg at room temperature.
Online since: July 2011
Authors: Hong Sun, Li Hua Luan, Zheng Nan Jin, Qian Liu
Effects of Temperature on the Impedance of PEM Fuel Cell
Qian liu1, a, Hong Sun1, Zhengnan Jin1, Lihua Luan1
1Transportation and Mechanical Engineering School, Shenyang Jianzhu University, Shenyang 110168, China
aqian546000@163.com
Keywords: PEM; fell cell; electrochemical impedance; temperature
Abstract.Electrochemical impedance (EI) plays a very important role on the characteristics of proton exchange membrane (PEM) fuel cell.
SHANG et al. [1], GUO et al.[2] experimentally analyzed the impedance with different discharge current of the PEM fuel cell; Ma [3] found that there are marked differences of EI for the PEM fuel cells with different channels; FAN et al. [4] analyzed the typical shapes of electrochemical impedance spectrum(EIS)and calculated the polarization resistances by the equivalent circuits; YANG et al.[5] experimentally studied the EI of PEM fuel cell without external humidification, and found that the increase of ohms impedance is the main factor that caused the breakdown of the performance of PEM fuel cell; Easton et al. [6] analyzed the capacitance and ion transport properties of the catalyst layers in the PEM fuel cell; Wagner et al.[7-8] studied the effect of the concentration of CO on the EI in the PEM fuel cell; Chen [9] studied the effects the diffusion layer in the PEM fuel cell on its EI; Saeed et al. [10] studied the effects of the assembly pressure on the EI of the PEM fuel cell.
That is to say, the temperature doesn’t affect markedly the impedance of electric double layer.
SHANG et al. [1], GUO et al.[2] experimentally analyzed the impedance with different discharge current of the PEM fuel cell; Ma [3] found that there are marked differences of EI for the PEM fuel cells with different channels; FAN et al. [4] analyzed the typical shapes of electrochemical impedance spectrum(EIS)and calculated the polarization resistances by the equivalent circuits; YANG et al.[5] experimentally studied the EI of PEM fuel cell without external humidification, and found that the increase of ohms impedance is the main factor that caused the breakdown of the performance of PEM fuel cell; Easton et al. [6] analyzed the capacitance and ion transport properties of the catalyst layers in the PEM fuel cell; Wagner et al.[7-8] studied the effect of the concentration of CO on the EI in the PEM fuel cell; Chen [9] studied the effects the diffusion layer in the PEM fuel cell on its EI; Saeed et al. [10] studied the effects of the assembly pressure on the EI of the PEM fuel cell.
That is to say, the temperature doesn’t affect markedly the impedance of electric double layer.
Online since: December 2006
Authors: Meng Yin Tu, Wen Hsiung Wang, Yung Fu Hsu
As to medium-high
carbon steels such as eutectoid SK5 steel, there is still less discussion about cleavage crack because
of another key factor-carbide- which dominates the mechanical properties of the bainite structure
in medium-high carbon steel, of course including the fracture behavior.
This also significantly affects the quality of the EBSP and our ability to determine the orientation.
This also significantly affects the quality of the EBSP and our ability to determine the orientation.
Online since: October 2014
Authors: Xin Huang, Jian Wei Yang, Yang Pan, Jin Pi
These results indicated that the chloride concentration was most important factor that affects the hydrates of MOC specimens.
Gomez Pecho, Effect of the dissolved magnesium chloride content and the specific weight of the caustic magnesite on the mechanical resistance of magnesium cement.
H., A study on the theories and techniques for improving the properties of MgO-based basic salt cements and their articles.
Gomez Pecho, Effect of the dissolved magnesium chloride content and the specific weight of the caustic magnesite on the mechanical resistance of magnesium cement.
H., A study on the theories and techniques for improving the properties of MgO-based basic salt cements and their articles.