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Online since: August 2017
Authors: Duangdao Aht-Ong, Pitcha Liewchirakorn, Pumpanchat Suthisamphat, Wannee Chinsirikul
Rate of migration depends on many factors.
Some researchers demonstrated that size of AF additive molecule affects migration behavior.
Another factor was surface energy, similar surface energy of matrix and additive could inhibit migration of the additive [4].
As shown in Fig. 6, sealing temperature affected seal strength of both films.
Maazouz, Improvement of Thermal Stability, Rheological and Mechanical Properties of PLA, PBAT and Their Blends by Reactive Extrusion with Functionalized Epoxy, Polymer Degradation and Stability, 97 (2012), 1898-914
Online since: December 2024
Authors: Abdul Hamid, Nurhatisyah Nurhatisyah, Dedik Romahadi, Andi Firdaus, Gilang Awan Yudhistira, Muhamad Fitri
Polymer degradation is a change in the properties of polymers or polymer-based products under the influence of one or more environmental factors such as heat, light, or chemicals.
Mechanical Properties Analysis.
This study has been established that UV irradiation caused the decrease of mechanical properties of material (SUTS and BS).
This study has been established that UV irradiation caused the decrease of mechanical properties of material (SUTS and BS).
Zaleha, “UV radiation effect towards mechanical properties of Natural Fibre Reinforced Composite material: A Review,” J.
Online since: February 2020
Authors: Iosif Tempea, Edward Rășchitor, Carmen Elisabeta Radu
The rubber has very good depreciation properties, thus reducing the energy of vibration and is a very good silencer, very important element in the case of electric motors.
The isolation of the base-as a technological principle-is recommended to high structures when it is desired to protect the non-structural elements (rubber cover, closure system, thermal and acoustic insulation), the defects of which could affect the safety of human life.
Conclusions The following conclusions are drawn: a) The correct assessment of the seismic action on a structure must take into account the following factors: the type of earthquake and its intensity (fast-slow, magnitude), the type of soil of the site, the structural characteristics (type of structure, materials used, structural system).
The rubber has very good damping properties, reducing the vibration energy and is a very good noise damper.
[10] http://nees.buffalo.edu/seesl/Image226.gif [11] C.G Koh, J.M Kelly, A simple mechanical model for elastomeric bearings used in based isolation, International Journal of Mechanical Sciences, no. 30, 1988, pp. 933–943
Online since: July 2012
Authors: Lan Lan Liu, Zheng Jian Ying, Li Ping Zhou
The asymmetric decorating of blades on the broach leads to tool produce radial force, which affects the stress of machine tool resulting in causing deformation and quality of holes.
Choosing appropriate “d” value affects the convergence of the simulative calculation.
The friction factor was 0.6, the thermal conductivity was 45 w/(m·k).
The materials of blades and workpiece were tungsten carbide (WC) and 45 steel respectively in the simulation, and their properties are displayed successively in table 1 and table 2.The amount of grid is 50000 and 80000.
(In Chinese) [4] Liping Zhou, Nenzhuang Wu: the prediction research of the cutting force Based on FEM.Tool Engineering, 2006(6):14—17. [1] (In Chinese) [5] Haixia Zhao: the FEM simulation of the Metal cutting force. school of mechanical & Xi’an industrial university ,xi’an,2007:83—86.[1] (In Chinese)
Online since: January 2013
Authors: Kwang Hee Im, Ki Youl Kim, Ki Taek Shin, Han Hee Lee, To Kang, Hyun Joon Cho, Jong An Jung
Ltd. 503 Worldvision, 234-6 Kochon Weuwang, Kunggi, 437-801, Korea 4Dept. of Mechanical and Automotive Engineering, Songwon University, Gwangju 502-210, Korea akhim@woosuk.ac.kr (corresponding author) and blhh@tmcltd.co.kr Keywords: Defects, Bushing, Composite-sintered, Nondestructive evaluation, Simulation Abstract.
Reliability of the bond is important factor more than anything else in determining the quality of the product.
Also, the mechanical properties could be obtained in this testing.
It is thought, therefore, that the cracks over the dotted red line in Fig.8 are affecting the composite-sintered bush seriously under the same condition.
Online since: August 2013
Authors: Vlad Andrei Ciubotariu
The mechanical characteristics of both steel grades available for the present study are shown in table 1.
Basic mechanical properties of the materials in discussion Characteristic I II TWB Tensile strength [MPa] 410.95 418.48 432.88 Yield stress [MPa] 177.77 230.43 245.57 Coefficient of resistance K 518.05 528.19 541.86 Strain hardening exponent n 0.213 0.161 0.157 Experimental setup.
The strain rate effect was accounted by using the Cowper and Symonds model that scales the flow stress with the factor 1+ (έ/C) 1/P.
This may be caused by the presence of the flanges which affects the characteristic progressive buckling of circular structures.
This may be caused by the flanges of the structure which affects some certain deformation modes of the walls; -the number of folds increases with the decrease of the facets width; - the mean crashing load decreases with the increase of the facets width.
Online since: July 2022
Authors: Dong Won Jung, Krishna Singh Bhandari, Nodirbek Kosimov, Si Jia Li, Wen Ning Chen
Research on High-Temperature Constitutive Relationship of Aluminum Alloy Chen Wenning1,a, Li Sijia2,b, Kosimov Nodirbek3,c, Krishna Singh Bhandari4,d, Dongwon Jung5,e* 1,2,3,4Research Scholar, Department of Mechanical Engineering, Jeju National University, Jeju Island, South Korea. 5Professor, Department of Mechanical Engineering, Jeju National University, Jeju Island, South Korea.
However, without understanding the nature properties, light material cannot be applied directly to replacement or investigated work performance [3].
From Eq. 1, temperature is the main factor affecting the development of the curve, which makes this model reasonable.
Online since: June 2012
Authors: Gui Qiang Liang, Ping Fa Feng, Ding Wen Yu, Zhi Jun Wu, Jian Fu Zhang
It has been widely used in various fields such as aerospace, aviation and military industry due to their specific properties including high specific strength and rigidity, low linear expansibility, good abradability, heat conductivity and dimensional stability at high temperature [1].
Therefore, the processing technology and mechanism of SiCp/Al composite materials has become an important research subject in the field of mechanical manufacturing [4].
It discussed the influence of surface roughness and cutting force contrast with rotairy ultrasonic milling and ordinary milling processing by single factor experiment.
In order to ensure that it will not be affected by external force during processing, the workpiece was glued to the loading platform by using the low temperature hot melt adhesive paste.
Mechanical model for predicting thrust and torque in vibration drilling fibre-reinforced composite materials, International Journal of Machine Tools & Manufacture 41 (2001) 641-657.
Online since: April 2014
Authors: Feng Li, Qin Wang, Ying Li, Jian Hong Fang, Qing Gao, Ming Lin, Ji Qin Han, Xin Xu
Titanium (Ti) and its alloys have become the most striking metallic materials for the purpose of orthopedic implants in recent years owing to their excellent biocompatibility, mechanical properties, and light weight [3,4].
Conclusion The processing time of the PEO could affect the morphology, element and phase composition of oxide coatings on Ti substrates, when the other electrical parameters were fixed.
Dahotre, Calcium phosphate coatings for bio-implant applications: materials, performance factors, and methodologies, Mat.
Online since: August 2013
Authors: Yu Jie Li, Hui Jie Xu, Yuan Zhang, Juan Juan Yao
Because of the internal and external factors, which is the influence by construction near the urban rail transit lines, the continuous degradation on structural performance of tunnel, and low frequency vibration load cycles of train, underground railway structure often appear lining diseases phenomenon, such as lining cracks, chip off-falling and leakage.
The lining structure cracks are not only affects beautiful, but also has adverse effect on the service life of structure (durability), and the structure water-proof.
It receives the light itight light and high corrosion resistance properties from carbon fiber.
It formatied advanced composite materials, which works with existing structures, and it reinforcement and improvement of mechanical structures of existing structures [4].
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