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Online since: January 2013
Authors: Xi Jing Wang, Ting Kai Guo, Zhong Ke Zhang, Pei Chung Wang, Ji Peng Shi, Yu Lian Wu, Yong Xin Lu
Using orthogonal experiment method, we select stir head rotating speed (n), shoulder friction time (t), and pin length (l) as orthogonal experiment of the three factors, and each factor has three levels, which can be found in Tab 2.
Filling the results of tensile test in the orthogonal table to carry on the calculation, the factors of tensile shear force are shown in Fig. 3.
As shown in Fig. 3, the tensile shear force of welding joint change violently with the increase of rotating speed, shoulder friction time and pin length, which verified that the test factors choosing is reasonable.
Fig. 3 Joint shear force of orthogonal factor index chart Orthogonal test result analysis is shown in Tab. 4, including Km (m = 1 ~ 3) for A, B and C factors of the mth of the corresponding level joint tensile strength average, the range R for K1, K2, K3,the number of 3 maximum and minimum difference, the greater the range, the factors that influence the joint tensile strength is larger.By three factors of the range all level analysis shows ,pin length has the biggest influence on the tensile share strength of welding joint, following the shouldr friction time and lastly the rotation speed.
Fig. 5 The fracture morphology and microscopic structure of Welding joint The macro morphology of joint fracture is shown in Fig. 5.Fracture occurs in heat affected zone of top magnesium plate, which is a typical button tear form.
Filling the results of tensile test in the orthogonal table to carry on the calculation, the factors of tensile shear force are shown in Fig. 3.
As shown in Fig. 3, the tensile shear force of welding joint change violently with the increase of rotating speed, shoulder friction time and pin length, which verified that the test factors choosing is reasonable.
Fig. 3 Joint shear force of orthogonal factor index chart Orthogonal test result analysis is shown in Tab. 4, including Km (m = 1 ~ 3) for A, B and C factors of the mth of the corresponding level joint tensile strength average, the range R for K1, K2, K3,the number of 3 maximum and minimum difference, the greater the range, the factors that influence the joint tensile strength is larger.By three factors of the range all level analysis shows ,pin length has the biggest influence on the tensile share strength of welding joint, following the shouldr friction time and lastly the rotation speed.
Fig. 5 The fracture morphology and microscopic structure of Welding joint The macro morphology of joint fracture is shown in Fig. 5.Fracture occurs in heat affected zone of top magnesium plate, which is a typical button tear form.
Online since: January 2012
Authors: Xiao Ming Liang, Hong Yu Guo, Bing Cheng Liu
These parameters affect the output of the ring mold machine and energy consumption directly.
Fig.1 The model of ring die Fig.2 The model of ANSYS ring mold 1.2 Ring mold material properties In this paper, the materials used in the ring mold is 42CrMo[3].
Table 1-1 is the main parameters of the mechanical 42CrMo.
Through mechanical analysis, the maximum stress should also appear here, Numerical simulation and theoretical analysis are identical. 2) The stress distribution on the working surface in the ring mold is uneven.
Granulating machine capacity of the influence factors[J].
Fig.1 The model of ring die Fig.2 The model of ANSYS ring mold 1.2 Ring mold material properties In this paper, the materials used in the ring mold is 42CrMo[3].
Table 1-1 is the main parameters of the mechanical 42CrMo.
Through mechanical analysis, the maximum stress should also appear here, Numerical simulation and theoretical analysis are identical. 2) The stress distribution on the working surface in the ring mold is uneven.
Granulating machine capacity of the influence factors[J].
Online since: September 2016
Authors: I.Y. Potoroko, A.A. Ruskina
This article assesses factors that affect merchandising and consumer performance of semi-prepared potato products and also deals with the issues of developing technologies and comprehensive assessment of the quality of the latter.
Polyphenol oxidase activity causes melanins buildup – these dark colored substances impair the outer look and other properties of the products [6].
Apart from oxidative enzymes, the potatoes darkening process is affected by respiration of the tubers.
Mechanical and other types of damage increase this rate.
As variable factors the power of ultrasonic influence (W) and time of influence (min.) have been chosen.
Polyphenol oxidase activity causes melanins buildup – these dark colored substances impair the outer look and other properties of the products [6].
Apart from oxidative enzymes, the potatoes darkening process is affected by respiration of the tubers.
Mechanical and other types of damage increase this rate.
As variable factors the power of ultrasonic influence (W) and time of influence (min.) have been chosen.
Online since: September 2011
Authors: H. Z. Cui
The compressive strength is one of the most important mechanical properties of concrete.
Yang and Huang [17] demonstrated that the compressive strength of lightweight aggregate concrete is mainly affected by the properties and volume fraction of aggregate.
Model B: The LWAC strength model is based on the properties of LWA alone.
J., Effect of Coarse Aggregate Characteristics on Mechanical Properties of High-Strength Concrete, ACI Materials Journal, 1990, 87, 2, pp 103–107
Z., Mechanical Properties of Lightweight Aggregate Concrete — Effect of Lightweight Aggregate on the Concrete, PhD thesis, City University of Hong Kong, 2006 [17] Yang C.
Yang and Huang [17] demonstrated that the compressive strength of lightweight aggregate concrete is mainly affected by the properties and volume fraction of aggregate.
Model B: The LWAC strength model is based on the properties of LWA alone.
J., Effect of Coarse Aggregate Characteristics on Mechanical Properties of High-Strength Concrete, ACI Materials Journal, 1990, 87, 2, pp 103–107
Z., Mechanical Properties of Lightweight Aggregate Concrete — Effect of Lightweight Aggregate on the Concrete, PhD thesis, City University of Hong Kong, 2006 [17] Yang C.
Online since: August 2014
Authors: Dan Shi Zhu, Jie Yu Liang, Xue Hui Cao, Jian Rong Li, Jia Yu Lv, Yong Hong Ge, Xu Qiao Feng
Gas composition was affected by respiration rate of pear and the permeability of packaging material remarkably.
However, red fragrant pear is susceptible to mechanical damage because of its thin skin.
The contents of O2 and CO2 in the packages during the storage were affected by many factors, such as packaging material, film thickness, permeability of film, so it was vital to choose suitable film to preserve Red Fragrant Pear.
Relationships among measurement variables were studied by using the correlation factor (R).
‘Kabaaşı’): Effect of Atmosphere, Packaging Material Type and Coating on the Physicochemical Properties and Sensory Quality: Food Bioprocess Technol. vol. 5 (2012),p.1601-1611
However, red fragrant pear is susceptible to mechanical damage because of its thin skin.
The contents of O2 and CO2 in the packages during the storage were affected by many factors, such as packaging material, film thickness, permeability of film, so it was vital to choose suitable film to preserve Red Fragrant Pear.
Relationships among measurement variables were studied by using the correlation factor (R).
‘Kabaaşı’): Effect of Atmosphere, Packaging Material Type and Coating on the Physicochemical Properties and Sensory Quality: Food Bioprocess Technol. vol. 5 (2012),p.1601-1611
Online since: November 2012
Authors: Jin Yu, Ying He, Guo Qin Huang
If this happens in the high pressure liquid-filled pipe system, the work state of the actuator would be badly affected [1].
And the velocity field, the pressure field and the pressure dissipation distribution were obtained to analysis the factors which influence the vibration of pipe in the valve port.
Assuming that the fluid which with constant property was incompressible Newtonian fluid was full developed.
And this was also the factor that leads to vibrations.
Chinese Journal of Mechanical Engineering. 8, 38(2002) 27-30
And the velocity field, the pressure field and the pressure dissipation distribution were obtained to analysis the factors which influence the vibration of pipe in the valve port.
Assuming that the fluid which with constant property was incompressible Newtonian fluid was full developed.
And this was also the factor that leads to vibrations.
Chinese Journal of Mechanical Engineering. 8, 38(2002) 27-30
Online since: October 2015
Authors: Janka Mihalčová
This significantly affects the life cycle of oil and, consequently, the lubrication system.
Methods of Assessment of Physicochemical Properties of Oils, Chemické listy 103/5 (2009) 416-418
Kosiba, Research on properties of organic liquids and new test methods for lubricating oils, 1st ed., SPU, Nitra, 2014.
Kuna, Adaptive rejection filter for the drives stabilization of pressure die casting machines, Advances in Mechanical Engineering 6 (2014) 1-10
Kuna, Experimental Study of Correlation of Mechanical Properties of Al-Si Casts Produced by Pressure Die Casting with SiFeMn Content and Their Mutual Mass Relations, Advances in Materials Science and Engineering (2013) 1-7
Methods of Assessment of Physicochemical Properties of Oils, Chemické listy 103/5 (2009) 416-418
Kosiba, Research on properties of organic liquids and new test methods for lubricating oils, 1st ed., SPU, Nitra, 2014.
Kuna, Adaptive rejection filter for the drives stabilization of pressure die casting machines, Advances in Mechanical Engineering 6 (2014) 1-10
Kuna, Experimental Study of Correlation of Mechanical Properties of Al-Si Casts Produced by Pressure Die Casting with SiFeMn Content and Their Mutual Mass Relations, Advances in Materials Science and Engineering (2013) 1-7
Online since: August 2014
Authors: Anna Benešová, Miroslava Netopilová, Jan Mikulenka
It is a known fact that timber constructions are distinguished by numerous advantages, such as good mechanical and physical properties, compatibility with health and environment, availability and renewability, economy, etc.
For example, the properties, including fire technical characteristics, of final products can be affected to a great extent by aimed choice of the matrix materials, as well as of particle or fibrous dispersed phase of wood composite.
Asbestos was commonly used till the second half of the last century due to its price availability and especially to characteristic properties such as rigidity, elasticity, chemical stability, electric insulation, and thermal resistance.
Partial replacement of wood components by suitable inorganic material provides the means of the improvement of some physical and mechanical properties, and probably of fire technical characteristics as well.
The aim of the research is the utilization of secondary raw materials, as well as the gaining of required properties, including fire and technical characteristics.
For example, the properties, including fire technical characteristics, of final products can be affected to a great extent by aimed choice of the matrix materials, as well as of particle or fibrous dispersed phase of wood composite.
Asbestos was commonly used till the second half of the last century due to its price availability and especially to characteristic properties such as rigidity, elasticity, chemical stability, electric insulation, and thermal resistance.
Partial replacement of wood components by suitable inorganic material provides the means of the improvement of some physical and mechanical properties, and probably of fire technical characteristics as well.
The aim of the research is the utilization of secondary raw materials, as well as the gaining of required properties, including fire and technical characteristics.
Online since: May 2012
Authors: Nian Jie Ma, Zhi Qiang Zhao, Hua Zhao, Li Shuai Jiang
The immediate roof consists of mudstone and Muddy siltstone which has the high swelling property.
Measuring Ground Stresses and its Affect on the Stability of Surrounding Rock Results of measuring ground stresses.
Affect on the stability of roadway surrounding rock.
Based on the theory of the maximum stress level [4], the stability of roadway roof and floor is deeply affected by horizontal stress if horizontal stress in surrounding rock of roadway is greater than vertical stress.
In order to make the rock deformation around roadway of high stress soft rock roadway under control and increase the safety factor, the roadway T1493 use full section bolting net spray which showed by Fig.5.
Measuring Ground Stresses and its Affect on the Stability of Surrounding Rock Results of measuring ground stresses.
Affect on the stability of roadway surrounding rock.
Based on the theory of the maximum stress level [4], the stability of roadway roof and floor is deeply affected by horizontal stress if horizontal stress in surrounding rock of roadway is greater than vertical stress.
In order to make the rock deformation around roadway of high stress soft rock roadway under control and increase the safety factor, the roadway T1493 use full section bolting net spray which showed by Fig.5.
Online since: January 2021
Authors: Asma Ababsa, Hachemi Ben Temam, Abderrahmane Gana, Ouahiba Herzallah
Introduction
Electrodeposited nickel coatings are used in a wide range of applications to enhance mechanical properties [1], corrosion [2,3] and wear resistance [4] of the coated components.
The purpose behind the deposition of alloy coatings is attaining the properties which cannot be obtained with pure metal alone.
Alloying with Co enhances the properties of Ni coatings.
The effect of these parameters on the mechanical properties has been dealt with in detail in the literature [12, 13].
William, The properties of Electrodeposited Metals and Alloys, Handbook: Elsevier Publication 1986
The purpose behind the deposition of alloy coatings is attaining the properties which cannot be obtained with pure metal alone.
Alloying with Co enhances the properties of Ni coatings.
The effect of these parameters on the mechanical properties has been dealt with in detail in the literature [12, 13].
William, The properties of Electrodeposited Metals and Alloys, Handbook: Elsevier Publication 1986