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Online since: March 2023
Authors: Mobashir Faiyaz, Ravi Shankar, V. Veeranaath
Prolonged stirring also improved the surface quality as the properties are improved.
From analysis, it is understandable that two factors are more pointedly causative to the surface finish viz. cutting depth and feed (37% and 38% respectively).
S/N charts (response wise) are used to identify the situations under which enhanced properties can be achieved for a particular single objective in consideration.
Mahapatra, Recent progress in aluminum metal matrix composites: A review on processing, mechanical and wear properties, Journal of Manufacturing Processes 59 (2020) 131-152
Ponshanmugakumar, An investigation on wear properties of SiC/WC strengthened aluminium alloy hybrid composites.
From analysis, it is understandable that two factors are more pointedly causative to the surface finish viz. cutting depth and feed (37% and 38% respectively).
S/N charts (response wise) are used to identify the situations under which enhanced properties can be achieved for a particular single objective in consideration.
Mahapatra, Recent progress in aluminum metal matrix composites: A review on processing, mechanical and wear properties, Journal of Manufacturing Processes 59 (2020) 131-152
Ponshanmugakumar, An investigation on wear properties of SiC/WC strengthened aluminium alloy hybrid composites.
Online since: April 2008
Authors: Yong Lin Kang, Guo Ming Zhu, Wei Chen, Guang Ting Ma
In the H-beam rolling process, the deformations and temperature field of workpiece
significantly influence the mechanical properties due to the change of product microstructure.
The approach is based on 3D thermal mechanical coupled finite element method.
Factors that affect product quality, such as the shape of rolling grooves, flow characteristics of the material, friction coefficients between the roller and workpiece and the thermal field of workpiece must be considered.
The mechanical mass scaled stable time step is set to 6e-6 seconds.
Summary The 3D coupling thermo-mechanical FEM has been applied successfully to analyze the whole hot rolling process of H-beam.
The approach is based on 3D thermal mechanical coupled finite element method.
Factors that affect product quality, such as the shape of rolling grooves, flow characteristics of the material, friction coefficients between the roller and workpiece and the thermal field of workpiece must be considered.
The mechanical mass scaled stable time step is set to 6e-6 seconds.
Summary The 3D coupling thermo-mechanical FEM has been applied successfully to analyze the whole hot rolling process of H-beam.
Online since: July 2019
Authors: Ionuț Sebastian Vintilă, Constantin Sandu, Horatiu Serbescu, Mihaela Raluca Condruz
Introduction
During the lifetime of a spacecraft, materials are subjected to different environmental factors, affecting the integrity and functionality of the structure.
The resin system has been selected based on its high Tg (240oC) and its high mechanical properties (presented in Table 1).
The self-healing system constituents were chosen regarding to their physical properties and their compatibility with the resin matrix.
Three-point bending tests and impact test are to be performed on neat samples and on samples after exposure to evaluate and validate the healing properties.
FEM analysis are ongoing to numerically evaluate the mechanical properties of the new composite material.
The resin system has been selected based on its high Tg (240oC) and its high mechanical properties (presented in Table 1).
The self-healing system constituents were chosen regarding to their physical properties and their compatibility with the resin matrix.
Three-point bending tests and impact test are to be performed on neat samples and on samples after exposure to evaluate and validate the healing properties.
FEM analysis are ongoing to numerically evaluate the mechanical properties of the new composite material.
Online since: March 2013
Authors: Jaeh Yun Choi, Kyu Sung Lee
The factors that affect construction difficulty in the every stage of construction are identified.
Then the PMIS can incorporate those factors by employing difficulty factors to each unit of piping.
The material ID represents each individual component registered in the model with the unique properties.
In other words, the initial estimate does not reflect the reality of construction sequence because it does not consider the other factors such as location of pipe spool or distance between pipes that affect the constructability beside physical characteristics of material.
The factors that affect constructability for each type of materials must be identified and considered to improve the accuracy of performance measurement and prediction of remaining work scope.
Then the PMIS can incorporate those factors by employing difficulty factors to each unit of piping.
The material ID represents each individual component registered in the model with the unique properties.
In other words, the initial estimate does not reflect the reality of construction sequence because it does not consider the other factors such as location of pipe spool or distance between pipes that affect the constructability beside physical characteristics of material.
The factors that affect constructability for each type of materials must be identified and considered to improve the accuracy of performance measurement and prediction of remaining work scope.
Online since: February 2014
Authors: Bohuslav Mašek, Hana Jirková, Vít Pileček
Optimum mechanical properties are achieved by using correct processing parameters and chemistry of the material.
Introduction The developments in the field of heat treating high-strength materials in automotive industry lead to adoption of new technologies which allow mechanical properties to be improved at reduced manufacturing costs.
Mechanical properties of the processed material were tested using miniature tensile specimens.
The results show that important factors include not just the QT, which affects both mechanical properties and the RA volume fraction, but also the rate of cooling from the austenitizing temperature.
The study revealed the large potential of the application of Q&P processing to a steel with cost-effective chemistry, most notably in terms of mechanical properties.
Introduction The developments in the field of heat treating high-strength materials in automotive industry lead to adoption of new technologies which allow mechanical properties to be improved at reduced manufacturing costs.
Mechanical properties of the processed material were tested using miniature tensile specimens.
The results show that important factors include not just the QT, which affects both mechanical properties and the RA volume fraction, but also the rate of cooling from the austenitizing temperature.
The study revealed the large potential of the application of Q&P processing to a steel with cost-effective chemistry, most notably in terms of mechanical properties.
Online since: July 2017
Authors: Mingqing Huang, Xiao Hui Liu, Hai Yong Cheng
Relationships of paste properties and influential factors can be demonstrated with regression analysis.
Generally, the targeted physical and chemical properties of CPB are apparently affected by many parameters such as mobility, uniaxial compressive strength (UCS), yield stress and concretion time.
Paste Properties Test.
The UCS tests were carried out according to the China national standard for test method of mechanical properties on ordinary concrete (GB/T 50081-2002) [5].
Range Analysis of Influential Factors.
Generally, the targeted physical and chemical properties of CPB are apparently affected by many parameters such as mobility, uniaxial compressive strength (UCS), yield stress and concretion time.
Paste Properties Test.
The UCS tests were carried out according to the China national standard for test method of mechanical properties on ordinary concrete (GB/T 50081-2002) [5].
Range Analysis of Influential Factors.
Online since: May 2012
Authors: Hai Ying Wang, Yu Mei Wang, Dong Liang Lin, Da Gang Li
Further more, it is a very important mechanical index to determine the stiffness of materials [11].
Composite deck boards in terms of their flexural properties are simple beams.
l = L sinα = L sin60° = (5) Methods to increase the stiffness of WPC board Factors that affect the bending deformation of the decking include elastic modulus, the moment of inertia and joist span.
[8] ASTM D 790,Standard Test Methods for Flexural Properties of Unreinforced and Reinforced plastics and Electrical Insulating Materials[ S]
[9] ASTM D 6109,Standard Test Methods for Flexural Properties of Unreinforced and Reinforced plastic Lumber and Related Products[ S]
Composite deck boards in terms of their flexural properties are simple beams.
l = L sinα = L sin60° = (5) Methods to increase the stiffness of WPC board Factors that affect the bending deformation of the decking include elastic modulus, the moment of inertia and joist span.
[8] ASTM D 790,Standard Test Methods for Flexural Properties of Unreinforced and Reinforced plastics and Electrical Insulating Materials[ S]
[9] ASTM D 6109,Standard Test Methods for Flexural Properties of Unreinforced and Reinforced plastic Lumber and Related Products[ S]
Online since: May 2014
Authors: B. Senthilkumar, K.P. Yuvaraj
It is found that, FSW has a major impact on the microstructure and mechanical properties of FSW TWBs and the thickness ratio significantly affects the properties of the blank.
Generally, the two factors such as tool geometry and process parameters would provide desired weld quality.
By focusing the future work with these two factors, we can obtain good weld joint with safe, environment friendly and economical welding condition.
"Mechanical Properties and Welding Power of Friction Stirred AA2024-T35 Joints."
"Fracture and mechanical properties of friction stir spot welds in 6063-T6 aluminum alloy."
Generally, the two factors such as tool geometry and process parameters would provide desired weld quality.
By focusing the future work with these two factors, we can obtain good weld joint with safe, environment friendly and economical welding condition.
"Mechanical Properties and Welding Power of Friction Stirred AA2024-T35 Joints."
"Fracture and mechanical properties of friction stir spot welds in 6063-T6 aluminum alloy."
Online since: July 2008
Authors: Masanori Kikuchi, Mamtimin Gheni
Shape Optimization of Metal Welded Bellows Seal based on the Turing
Reaction-diffusion Model coupled with FEM
Mamtimin Geni1a
and Masanori Kikuchi2b
1
School of Mechanical Engineering, Xinjiang University, Urumqi, China, 830008
2
Mechanical Department, Tokyo University of Science, Noda,Chiba,278,Japan
a
mgheni@263.net, bkik@me.noda.tus.ac.jp
Key Words: Reaction-diffusion Model, FEM, iBone, Metal Welded Bellows, Flexibility
Abstract.
Introduction The mechanical properties of the metal welded seal are strongly affected by the structures of the wave.
The shape of the bellows largely affects the welded metal bellows mechanical characteristics and technical targets.
All the other information was obtained locally and the cells communicated each other via diffusion of local factors.
Halida Musha, Mamtimin Geni, Buhalqam, Shape Optimization and Strength Evaluation of Metal Welded Bellows Wave of Mechanical Seal, Advanced Materials Research, Vols. 33-37,2008, 1377-1382
Introduction The mechanical properties of the metal welded seal are strongly affected by the structures of the wave.
The shape of the bellows largely affects the welded metal bellows mechanical characteristics and technical targets.
All the other information was obtained locally and the cells communicated each other via diffusion of local factors.
Halida Musha, Mamtimin Geni, Buhalqam, Shape Optimization and Strength Evaluation of Metal Welded Bellows Wave of Mechanical Seal, Advanced Materials Research, Vols. 33-37,2008, 1377-1382
Online since: June 2013
Authors: Yan Fang Liu, Ming Chong Mao, Gang Shi, Xiang Yang Xu
The calculated results show that the operating environment and current are important factors leading to thermal failure of solenoid valves.
The stability and reliability of solenoid valves directly affects the quality and safety of the entire electro-hydraulic control system and even the whole equipment.
Too high or too low operating voltage, excess number of cycles and high duty cycle are the main factors.
Since those failure factors with strong nonlinear coupling relations mainly originated from a multi-physical field, determining the key factors influence the reliability and life of solenoid valves and discover their influence rule is critical to reliability design of solenoid valves.
Finally, the properties of the materials of solenoid valve used in the current study are shown in Table 1.
The stability and reliability of solenoid valves directly affects the quality and safety of the entire electro-hydraulic control system and even the whole equipment.
Too high or too low operating voltage, excess number of cycles and high duty cycle are the main factors.
Since those failure factors with strong nonlinear coupling relations mainly originated from a multi-physical field, determining the key factors influence the reliability and life of solenoid valves and discover their influence rule is critical to reliability design of solenoid valves.
Finally, the properties of the materials of solenoid valve used in the current study are shown in Table 1.