Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: August 2013
Authors: Natinee Lopattananon, Wilma Dierkes, Jacques W.M. Noordermeer, Kannika Sahakaro, Prachid Saramolee
The optimal mechanical properties of silica-filled vulcanizates are observed at the ELMWNR-28 (28 mol% epoxide) loading of 10 phr.
The incorporation of ELMWNR with 28 and 51 mol% epoxide groups into NR compounds introduces a second glass transition temperature and affects on their dynamic mechanical properties.
Introduction Good dispersibility of filler in the filled-rubber compounds improves physical and mechanical properties such as tensile strength, elongation at break, abrasion and fatigue resistance.
Dynamic mechanical properties are displayed in Fig. 2(b).
The optimal mechanical properties of silica-filled NR vulcanizates are obtained by using ELMWNR with 28 mol% epoxide at a concentration of 10 phr.
The incorporation of ELMWNR with 28 and 51 mol% epoxide groups into NR compounds introduces a second glass transition temperature and affects on their dynamic mechanical properties.
Introduction Good dispersibility of filler in the filled-rubber compounds improves physical and mechanical properties such as tensile strength, elongation at break, abrasion and fatigue resistance.
Dynamic mechanical properties are displayed in Fig. 2(b).
The optimal mechanical properties of silica-filled NR vulcanizates are obtained by using ELMWNR with 28 mol% epoxide at a concentration of 10 phr.
Online since: August 2013
Authors: Chutima Limmatvapirat, Sontaya Limmatvapirat, Noppadol Chongcherdsak, Direk Aekthammarat
The aim of this research was to elucidate the factors affecting drug release and buoyancy properties of effervescent shellac based matrix tablet.
The factors affecting floating and drug release, including amount of SHL and gas forming agent were investigated.
Due to the outstanding of SHL properties including moisture barrier and gastric protection[4], SHL was used as a film former for enteric coating and matrix forming agent.
In this study, effervescent gastric floating dosage form containing SHL as a matrix forming agent was fabricated and its physicochemical properties were characterized.
Puttipipatkhachorn, Modification of physicochemical and mechanical properties of shellac by partial hydrolysis, Int.
The factors affecting floating and drug release, including amount of SHL and gas forming agent were investigated.
Due to the outstanding of SHL properties including moisture barrier and gastric protection[4], SHL was used as a film former for enteric coating and matrix forming agent.
In this study, effervescent gastric floating dosage form containing SHL as a matrix forming agent was fabricated and its physicochemical properties were characterized.
Puttipipatkhachorn, Modification of physicochemical and mechanical properties of shellac by partial hydrolysis, Int.
Online since: June 2014
Authors: Ming Yin, Wen Tong Cheng, Li Juan Bai, Lan Lan Guo
NC machine creeping failure usually occurs in the mechanical part and feed servo system of NC machine tool feed system, because of low speed creeping phenomenon often depends on the characteristics of mechanical transmission parts.
The influencing factors of crawling (1) Crawling is associated with the properties of friction.
Among the mechanical transmission system, the stiffness of the whole system will be affected because of deformations of any transmission part, especially the last set of transmission part.
The main measures to prevent the crawling All the influencing factors of crawling, the difference between the static and dynamic friction force of the moving parts and rigidity of transmission system, are the two main factors .There are some measures to prevent crawling: 1.
Usually drive the equivalent damping coefficient of c1 is very small, the crawling phenomenon of theoretical analysis and numerical simulation can be seen: whether the creeping phenomenon depend mainly on the friction properties of the friction damping coefficient c2 , c2 >0 will not crawl phenomenon, while c2 <0 can produce creeping phenomenon
The influencing factors of crawling (1) Crawling is associated with the properties of friction.
Among the mechanical transmission system, the stiffness of the whole system will be affected because of deformations of any transmission part, especially the last set of transmission part.
The main measures to prevent the crawling All the influencing factors of crawling, the difference between the static and dynamic friction force of the moving parts and rigidity of transmission system, are the two main factors .There are some measures to prevent crawling: 1.
Usually drive the equivalent damping coefficient of c1 is very small, the crawling phenomenon of theoretical analysis and numerical simulation can be seen: whether the creeping phenomenon depend mainly on the friction properties of the friction damping coefficient c2 , c2 >0 will not crawl phenomenon, while c2 <0 can produce creeping phenomenon
Online since: June 2015
Authors: D. Bharath, T.S. Mahesh Babu, Vivek George Koshy
The heat developed inside the structure is to be dissipated uniformly without affecting the other components.
The heat developed inside the structure is to be dissipated uniformly without affecting the other components.
Hence the structure for the Nano satellite is designed in considering all this factors.
On comparing the various grads of Aluminium from the point of view of mechanical properties applicable to the satellite structure it is decided to choose ALUMINIUM 6082 for Frames, Ribs and ALUMINIUM 5754 for Shear Panels.
The above mentioned factors are the impact on satellite at the launch, as well as till the satellite deploy from the peapod.
The heat developed inside the structure is to be dissipated uniformly without affecting the other components.
Hence the structure for the Nano satellite is designed in considering all this factors.
On comparing the various grads of Aluminium from the point of view of mechanical properties applicable to the satellite structure it is decided to choose ALUMINIUM 6082 for Frames, Ribs and ALUMINIUM 5754 for Shear Panels.
The above mentioned factors are the impact on satellite at the launch, as well as till the satellite deploy from the peapod.
Online since: July 2013
Authors: Li Hong Liu
Large amounts of papers indicate that the substrate temperature is one of the factors that affect the preparing of CVD diamond with high qulity.
Chen, Mechanical Properties of Diamond Thin Films Characterized by Nano-indentation Method, Journal of the Chinese Ceramic Society, 33(2005)(12):1539-1543
Sussmann, Optical, thermal and mechanical properties of CVD diamond, Diamond and Related Materials, 9(2000):1726-1729
Yang, Nano-hardness Techniques and Its Applications in Mechanical Property Measurements for Surface Engineering, China Mechanical Engineering, 13(2002)24:2148-2151
Wang, Optical and electrical properties of different oriented CVD diamond films, Applied Surface Science, 252(2006):8239–8242.
Chen, Mechanical Properties of Diamond Thin Films Characterized by Nano-indentation Method, Journal of the Chinese Ceramic Society, 33(2005)(12):1539-1543
Sussmann, Optical, thermal and mechanical properties of CVD diamond, Diamond and Related Materials, 9(2000):1726-1729
Yang, Nano-hardness Techniques and Its Applications in Mechanical Property Measurements for Surface Engineering, China Mechanical Engineering, 13(2002)24:2148-2151
Wang, Optical and electrical properties of different oriented CVD diamond films, Applied Surface Science, 252(2006):8239–8242.
Online since: December 2011
Authors: Jan Madl, Vitezslav Razek, Vaclav Koutny, Jindrich Kafka
All machining processes result in changes of surface layer properties.
All these characteristics may affect fatigue cracks in machined parts.
In general, compressive residual stresses are to be preferred since they improve the fatigue life of parts and increase stress-corrosion cracking resistance, where as tensile residual stresses are usually detrimental to these properties.
The tool edge geometry also affects the generated residual stress profiles [5].
The finishing process in metal machining is affected by a number of factors mainly from differences in tooling and process kinematics [8,9,10].
All these characteristics may affect fatigue cracks in machined parts.
In general, compressive residual stresses are to be preferred since they improve the fatigue life of parts and increase stress-corrosion cracking resistance, where as tensile residual stresses are usually detrimental to these properties.
The tool edge geometry also affects the generated residual stress profiles [5].
The finishing process in metal machining is affected by a number of factors mainly from differences in tooling and process kinematics [8,9,10].
Online since: October 2020
Authors: Sergio Neves Monteiro, Foluke Salgado de Assis, Gilmar Cunha da Silva, Verônica Scarpini Candido, Alisson Clay Rios da Silva
The results showed that poly (methyl methacrylate) (PMMA) maintained its tensile mechanical properties up to 105°C.
This polymer presents good optical properties, mechanical resistance, good resistance to atmospheric agents and low absorption of water [5,7].
However this procedure decreases the PMMA optical properties [8,9].
Moreover, the nanocomposite production technique, another factor observed is the exposure temperature of the PMMA that may influence its mechanical properties [5].
The mechanical properties of PMMA revealed that the temperature may be a variable, which might contribute to increase the tensile strength.
This polymer presents good optical properties, mechanical resistance, good resistance to atmospheric agents and low absorption of water [5,7].
However this procedure decreases the PMMA optical properties [8,9].
Moreover, the nanocomposite production technique, another factor observed is the exposure temperature of the PMMA that may influence its mechanical properties [5].
The mechanical properties of PMMA revealed that the temperature may be a variable, which might contribute to increase the tensile strength.
Online since: January 2014
Authors: Alfirano Alfirano, Hidayat Maulud, Wibawa Samdan
It was found that intercritical annealing temperature and holding time affected the microstructure and mechanical properties of dual phase low carbon steel.
Thus, dual phase steels have characteristic mechanical properties which include low yield strength and high ultimate tensile strength as compared with conventional low-carbon steel [3].
For mechanical properties, the samples were cut in to two parts.
Decrease in strain can occur due to two factors, such as the residual stress during the transformation of austenite to martensite during cooling and dislocations increases with increasing volume of martensite [4].
Miler, Mechanical properties of ferit–martensit steels, New Orleans, LA, USA, 1979
Thus, dual phase steels have characteristic mechanical properties which include low yield strength and high ultimate tensile strength as compared with conventional low-carbon steel [3].
For mechanical properties, the samples were cut in to two parts.
Decrease in strain can occur due to two factors, such as the residual stress during the transformation of austenite to martensite during cooling and dislocations increases with increasing volume of martensite [4].
Miler, Mechanical properties of ferit–martensit steels, New Orleans, LA, USA, 1979
Online since: November 2011
Authors: Bin Ma, Tie Chi, Xiao Fu Ma, Xiang Bin Meng, Lin Chong Hao, Di Wang
It is difficult to achieve automatic and intelligent monitoring for mechanical properties, and real-time and effective control of mechanical equipment.
The Monitoring System Structure of Mechanical Equipment based on Multi-Agent The monitoring system structure of mechanical equipment based on multi-Agent is shown in figure1.
Do statistical analysis, obtained estimated mechanical equipment condition, forecasts of operating mission objectives and the impact of environmental factors that might work on the device.
The raw materials of concrete are so many; including cement, fly ash, water, carpolite, grit, additive, etc., the ratio of these materials will affect the compressive strength, flexural strength of concrete.
As there are many factors affect the concrete index, and quantitative adjustments more complex, so adopt BP neural network algorithm [10] in the knowledge base of decision Agent.
The Monitoring System Structure of Mechanical Equipment based on Multi-Agent The monitoring system structure of mechanical equipment based on multi-Agent is shown in figure1.
Do statistical analysis, obtained estimated mechanical equipment condition, forecasts of operating mission objectives and the impact of environmental factors that might work on the device.
The raw materials of concrete are so many; including cement, fly ash, water, carpolite, grit, additive, etc., the ratio of these materials will affect the compressive strength, flexural strength of concrete.
As there are many factors affect the concrete index, and quantitative adjustments more complex, so adopt BP neural network algorithm [10] in the knowledge base of decision Agent.
Online since: May 2016
Authors: Cheng Jun Wang, Long Li, Chang Guo Xue, Qiong Liu
Researches on affecting factors on liquid metal filling capacity in casting and formation process have the great significance in analysis of casting defects, improvement in structural technique and quality[1-3].
Therefore, EDEM can be applied to simulate casting filling process under multidimensional vibration, and to intuitively observe liquid metal’s motion state and factors affecting filling capacity under the multidimensional vibration impact.
The comparative analysis shows that factors affecting filling time decrease in order are freedom, frequency, and amplitude, with degree of freedom as well as frequency showing great effect on filling time while amplitude showing no significant influence on filling time in table 4.
The results are consistent with the factors that affect the filling time by the orthogonal test.
Wan, Microstructure and properties of rheo-diecast Al-20Si-2Cu-1Ni-0.4Mg Alloy with Direct Ultrasonic Vibration Process, J.
Therefore, EDEM can be applied to simulate casting filling process under multidimensional vibration, and to intuitively observe liquid metal’s motion state and factors affecting filling capacity under the multidimensional vibration impact.
The comparative analysis shows that factors affecting filling time decrease in order are freedom, frequency, and amplitude, with degree of freedom as well as frequency showing great effect on filling time while amplitude showing no significant influence on filling time in table 4.
The results are consistent with the factors that affect the filling time by the orthogonal test.
Wan, Microstructure and properties of rheo-diecast Al-20Si-2Cu-1Ni-0.4Mg Alloy with Direct Ultrasonic Vibration Process, J.