Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: June 2015
Authors: Ionel Chicinaş, Olivier Isnard, Traian Florin Marinca, Bogdan Viorel Neamţu, Horea Florin Chicinaş
Even if the stability of the benzene molecule (aromatic ring) is larger compared to that of ethanol or oleic acid (chain like), is seems that the number of carbon atoms contained by the molecule is the main factor affecting the powder contamination and thus its amorphisation.
Duwez, Structure and properties of alloys rapidly quenched from the liquid state, Trans.
Păşcuţă, Preparation and soft magnetic properties of spark plasma sintered compacts based on Fe-Si-B glassy powder.
Kavečanský, The influence of the long time milling on the structure and magnetic properties of the Fe–Cu–Nb–Si–B powder, Mater.
Inoue, Enhanced mechanical properties due to structural changes induced by devitrification in Fe–Co–B–Si–Nb bulk metallic glass, Acta Mater., 58 (2010) 6256-6266
Duwez, Structure and properties of alloys rapidly quenched from the liquid state, Trans.
Păşcuţă, Preparation and soft magnetic properties of spark plasma sintered compacts based on Fe-Si-B glassy powder.
Kavečanský, The influence of the long time milling on the structure and magnetic properties of the Fe–Cu–Nb–Si–B powder, Mater.
Inoue, Enhanced mechanical properties due to structural changes induced by devitrification in Fe–Co–B–Si–Nb bulk metallic glass, Acta Mater., 58 (2010) 6256-6266
Online since: May 2015
Authors: Md Nizam Abd Rahman, Mohammad Minhat, Adnan Jameel Abbas
Heat generated in the cutting zone area is an important factor affecting workpiece and cutting tool properties.
Cutting temperature is considered an important factor affecting machining operations because it firmly influences cutting forces, workpiece surface integrity, and tool life [6].
The specification of product surface is an important factor affecting a materials ability to resist stresses, temperature, friction, and corrosion.
The chemical composition and mechanical properties of mild steel material shows in Tables 3, 4 respectively:- Table 3 Chemical composition of the work piece material.
Element C Si Mn P S Cr Ni Cu Weight(%) 0.42-0.50 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.25 0.25 Table 4 Mechanical properties of work piece material.
Cutting temperature is considered an important factor affecting machining operations because it firmly influences cutting forces, workpiece surface integrity, and tool life [6].
The specification of product surface is an important factor affecting a materials ability to resist stresses, temperature, friction, and corrosion.
The chemical composition and mechanical properties of mild steel material shows in Tables 3, 4 respectively:- Table 3 Chemical composition of the work piece material.
Element C Si Mn P S Cr Ni Cu Weight(%) 0.42-0.50 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.25 0.25 Table 4 Mechanical properties of work piece material.
Online since: November 2012
Authors: Mohd Hilmi Othman, Sulaiman Hasan, Shazarel Shamsudin
Ming-Chih Huang et.al (1999) have explored the factors affecting the warpage problem of an injection molded part with thin shell featured, made from Polycarbonate/Acrylonitrile Styrene PC/ABS blend.
Therefore, to continue the research, this investigation shall be carried out to determine which factors that affecting warpage and shrinkage, by using different material which is HDPE.
The properties of this material are stated in Table 1. [1] Table 1: General Properties of Generic Unfilled HDPE [1] Specific Gravity 0.94 Tensile Modulus @ 73oF (Mpsi) 0.2 Tensile Strength @ yield (Kpsi) 3.75 Notch Izod Impact @ 73oF (ft-lb-in) No break Thermal Limit Service Temperature.
The L9 is chosen as an OA because it is suitable for four factors with three levels.
Parameter Simulation Results Experimental Results Melt Temperature 180 180 Filling Time (s) 0.220 0.197 Packing Time (s) 15 5 Packing Pressure (%) 45 35 Conclusion Of all the factors affecting warpage and shrinkage in injection molding, the packing time is the most influential factor, which shows a contribution rate of 48.93%.
Therefore, to continue the research, this investigation shall be carried out to determine which factors that affecting warpage and shrinkage, by using different material which is HDPE.
The properties of this material are stated in Table 1. [1] Table 1: General Properties of Generic Unfilled HDPE [1] Specific Gravity 0.94 Tensile Modulus @ 73oF (Mpsi) 0.2 Tensile Strength @ yield (Kpsi) 3.75 Notch Izod Impact @ 73oF (ft-lb-in) No break Thermal Limit Service Temperature.
The L9 is chosen as an OA because it is suitable for four factors with three levels.
Parameter Simulation Results Experimental Results Melt Temperature 180 180 Filling Time (s) 0.220 0.197 Packing Time (s) 15 5 Packing Pressure (%) 45 35 Conclusion Of all the factors affecting warpage and shrinkage in injection molding, the packing time is the most influential factor, which shows a contribution rate of 48.93%.
Online since: October 2011
Authors: Jin Hong Ma, Hui Li
The recrystallization simulation of H-beam rolling process
Jinhong Ma1,2 a, Hui Li1,2
1Metallurgy and energy college of Hebei United University, Tangshan, 063009 China
2Hebei Province modern metallurgy technology key laboratory,063009,china
amajinhong@126.com
Keywords: deform; recrystallization; relative reduction
Abstract:Based on commercial FE software of DEFORM-3D,the recrystallization in the rolling process of H-Beam is simulated, the factors affect the recrystallization are analyzed.
The different reduces affect the recrystallization are also analyzed.
Introduction H-beam is widely used in the construction of national economy in virtue of its excellent section properties[1].
But at this case, increasing the reduce will cause uneven grain size at the cross-section to increase, in order to improve the mechanical properties of H-beam, on making the rolling schedules, in the condition of meeting the requirement of the stiffness and strength equipment, as much as possible increasing the reduce, however, avoiding the rolling temperature and rolling speed lead to the larger grain size.
Anshan Iron and Steel Technology. 1998,(4):21-23 (In chinese) [2] Senumz T, Suehiro M, Yada H, Mathematical models for predicting microstructural evolution and mechanical properties of hot strips[J].
The different reduces affect the recrystallization are also analyzed.
Introduction H-beam is widely used in the construction of national economy in virtue of its excellent section properties[1].
But at this case, increasing the reduce will cause uneven grain size at the cross-section to increase, in order to improve the mechanical properties of H-beam, on making the rolling schedules, in the condition of meeting the requirement of the stiffness and strength equipment, as much as possible increasing the reduce, however, avoiding the rolling temperature and rolling speed lead to the larger grain size.
Anshan Iron and Steel Technology. 1998,(4):21-23 (In chinese) [2] Senumz T, Suehiro M, Yada H, Mathematical models for predicting microstructural evolution and mechanical properties of hot strips[J].
Online since: October 2012
Authors: Jian Ming Zhan, Li Yong Hu, Di Zheng, Chong Yang Yuan
Through analysis, it was pointed out that the key factor affecting the polishing quality of this system is the stability of the system.
Based on the property of MRF, a MRT was designed in this paper to provide stable and controllable torque for the compliant polishing tool system.
In a certain polishing process, as the coefficient K is a constant and the relative polishing velocity can be controlled by the DC motor, the polishing pressure becomes the most important factor affecting the polishing quality, and thus, a stable and controllable polishing pressure is certainly required.
In the process, the material properties of each component, appropriate constraints, loadings, and kinematic pairs were defined, and suitable solver was selected for the simulation of the virtual prototype.
Cui: Chinese Mechanical Engineering, Vol.20 (2009) No.5, pp.518-521.
Based on the property of MRF, a MRT was designed in this paper to provide stable and controllable torque for the compliant polishing tool system.
In a certain polishing process, as the coefficient K is a constant and the relative polishing velocity can be controlled by the DC motor, the polishing pressure becomes the most important factor affecting the polishing quality, and thus, a stable and controllable polishing pressure is certainly required.
In the process, the material properties of each component, appropriate constraints, loadings, and kinematic pairs were defined, and suitable solver was selected for the simulation of the virtual prototype.
Cui: Chinese Mechanical Engineering, Vol.20 (2009) No.5, pp.518-521.
Online since: April 2015
Authors: Ying Hong Peng, Da Yong Li, Qiang Ren, Tian Xia Zou, Guang Han Wu
Fluctuations in material properties of the incoming steel for UOE forming process are widespread.
In this paper, experiments were conducted to investigate how a stochastic material behavior of noise factors affected UOE forming quality.
Although these fluctuations meet the API standards in terms of the mechanical properties of the pipeline steel, they seriously affect the stability of UOE pipe forming.
Table 1 Material properties and corresponding variation of X80.
As opposed to variations in material properties, processing parameters can be precisely controlled in UOE forming process, and they also have significant influence on the ovality.
In this paper, experiments were conducted to investigate how a stochastic material behavior of noise factors affected UOE forming quality.
Although these fluctuations meet the API standards in terms of the mechanical properties of the pipeline steel, they seriously affect the stability of UOE pipe forming.
Table 1 Material properties and corresponding variation of X80.
As opposed to variations in material properties, processing parameters can be precisely controlled in UOE forming process, and they also have significant influence on the ovality.
Online since: December 2024
Authors: Adavayya Sangayya Chikkamath, I.G. Siddhalingeshwar, Vinod Kumar V. Meti
Higher percentages could lead to difficulties achieving a homogenous distribution, negatively affecting the composite's properties.
Aluminum Matrix Composites (AMCs) are widely used due to their exceptional mechanical and wear properties.
Therefore, it is possible to think of adhesion, delamination, and plastic deformation as the three factors that control the wear mechanism.
Effect of ZrO2 addition on microstructure and mechanical properties of Al-Zn-Mg alloy matrix composite.
An investigation on the mechanical properties of hybrid metal matrix composites.
Aluminum Matrix Composites (AMCs) are widely used due to their exceptional mechanical and wear properties.
Therefore, it is possible to think of adhesion, delamination, and plastic deformation as the three factors that control the wear mechanism.
Effect of ZrO2 addition on microstructure and mechanical properties of Al-Zn-Mg alloy matrix composite.
An investigation on the mechanical properties of hybrid metal matrix composites.
Online since: October 2019
Authors: Wantanee Buggakupta, Pornapa Sujaridworakun, Kasidet Rupiyawet, Kritsana Kaewlob
There are many factors affecting the performance of brake pads, particularly their friction and wear rate [4].
These factors are statistically significant at the 0.05 level with the current model.
A summary of the measured properties that are influenced by the mixing time No.
However, every specimen has a slight difference in physical properties, given the rather similar wear rate, as noted earlier [11], A variation in porosity affects the performance of brake pad less than does a variation in hardness.
Thus, the consideration of physical properties focused on hardness.
These factors are statistically significant at the 0.05 level with the current model.
A summary of the measured properties that are influenced by the mixing time No.
However, every specimen has a slight difference in physical properties, given the rather similar wear rate, as noted earlier [11], A variation in porosity affects the performance of brake pad less than does a variation in hardness.
Thus, the consideration of physical properties focused on hardness.
Online since: July 2015
Authors: Zahurin Halim, Zuraida Ahmad, Syarifah Nur Adilla Syed Taha
The nature of natural fibers causes it to be suitable for the above said properties.
However, some properties of natural fibers may restrict its utilization.
The main problem leading to reduced mechanical properties in natural fiber reinforced polymer is the poor compatibility or adhesion between the hydrophilic fibers and the hydrophobic matrix materials.
The three factors affecting the bond between two materials are the mechanical interlocking, the molecular attractive forces, and the chemical bonds.
It is intended to improve mechanical properties by reducing moisture absorption of hydrophilic kenaf fiber [7].
However, some properties of natural fibers may restrict its utilization.
The main problem leading to reduced mechanical properties in natural fiber reinforced polymer is the poor compatibility or adhesion between the hydrophilic fibers and the hydrophobic matrix materials.
The three factors affecting the bond between two materials are the mechanical interlocking, the molecular attractive forces, and the chemical bonds.
It is intended to improve mechanical properties by reducing moisture absorption of hydrophilic kenaf fiber [7].
Online since: August 2019
Authors: K. Mayandi, M.T.H. Sultan, J Manivannan, S. Rajesh
Further, considering the mechanical properties of any composite is a lot of vital to any or all engineering applications.
The length of the fiber affects the mechanical properties of banana fiber reinforced polyester composite [5].
The large interfacial gap is one of the factors for losing tensile properties; in this SWPC SEM image also has a large interfacial gap between fiber and matrix.
Vignesh, Mechanical properties of chemically treated Luffa aegyptiaca fiber reinforced epoxy matrix composite, Int.
Yin, Mechanical and thermal properties of chicken feather fiber/PLA green composites, Compos.
The length of the fiber affects the mechanical properties of banana fiber reinforced polyester composite [5].
The large interfacial gap is one of the factors for losing tensile properties; in this SWPC SEM image also has a large interfacial gap between fiber and matrix.
Vignesh, Mechanical properties of chemically treated Luffa aegyptiaca fiber reinforced epoxy matrix composite, Int.
Yin, Mechanical and thermal properties of chicken feather fiber/PLA green composites, Compos.