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Online since: June 2014
Authors: K Raja, V.S. Chandrasekar, P. Marimuthu
It could spread experts in each domain by not affecting the evaluating results on participator’s problems.
The thermal and mechanical properties of Kevlar-49/epoxy-resin laminates have been studied [12].
Each particular composite material has a lot of physical and mechanical properties.
Material properties Every material has different physical and mechanical properties.
And the Important mechanical properties are young’s modulus, shear modulus, specific stiffness, and strength to weight ratio etc… Quantitative properties Such properties can be expressed numerically.
The thermal and mechanical properties of Kevlar-49/epoxy-resin laminates have been studied [12].
Each particular composite material has a lot of physical and mechanical properties.
Material properties Every material has different physical and mechanical properties.
And the Important mechanical properties are young’s modulus, shear modulus, specific stiffness, and strength to weight ratio etc… Quantitative properties Such properties can be expressed numerically.
Online since: November 2025
Authors: Yuriy Tsapko, Ivan Kasyanchuk, Olga Bondarenko, Oleksii Tsapko
However, as an organic material, wood is exposed to environmental factors that destroy it during operation.
The obtained biocomposites are characterized by morphology (SEM analysis), thermal behavior (TGA analysis) and mechanical properties.
The results showed an increase in mechanical properties and thermal stability.
Then, the physical, mechanical and morphological characterization of the fabricated WPCs were carried out to analyze their properties.
Paridah, Physical, mechanical, and biodegradable properties of meranti wood polymer composites, Materials and Design, 64 (2014) 743–749
The obtained biocomposites are characterized by morphology (SEM analysis), thermal behavior (TGA analysis) and mechanical properties.
The results showed an increase in mechanical properties and thermal stability.
Then, the physical, mechanical and morphological characterization of the fabricated WPCs were carried out to analyze their properties.
Paridah, Physical, mechanical, and biodegradable properties of meranti wood polymer composites, Materials and Design, 64 (2014) 743–749
Online since: January 2022
Authors: Lin Liu, Mei Qing Zhang
However, with the continuous promotion and use of high-rise buildings and mass concrete components, the traditional winter maintenance methods are more and more unsuitable for site construction in North China due to the influence of site construction conditions, site space conversion, construction safety, environmental pollution and other factors.
The temperature after concrete pouring is related to many factors such as temperature rise of hydration heat of cement, pouring temperature and progress of concrete, external temperature, surface protection, etc.
Mechanical Properties of Concrete.
Specimen concrete: C30 concrete is used as the test sample concrete, and the mechanical properties are shown in Table I Tab.1 Mechanical properties of concrete 28 d Strength Elastic modulus Poisson's ratio Density 30N/mm2 3.0×104N/mm2 0.2 2400kg/m3 Thermal Properties of Concrete.
Tab.2 Thermal Properties summary table of raw materials Material name Cement Sand Stone Water thermal conductivity {KJ/(m.h.
The temperature after concrete pouring is related to many factors such as temperature rise of hydration heat of cement, pouring temperature and progress of concrete, external temperature, surface protection, etc.
Mechanical Properties of Concrete.
Specimen concrete: C30 concrete is used as the test sample concrete, and the mechanical properties are shown in Table I Tab.1 Mechanical properties of concrete 28 d Strength Elastic modulus Poisson's ratio Density 30N/mm2 3.0×104N/mm2 0.2 2400kg/m3 Thermal Properties of Concrete.
Tab.2 Thermal Properties summary table of raw materials Material name Cement Sand Stone Water thermal conductivity {KJ/(m.h.
Online since: September 2014
Authors: Petr Valášek, Miroslav Müller
The first group is adhesive properties and conditions of an adhesive bond creation.
The adhesive properties can be influenced e.g. by an unsuitable storing.
Although both above stated groups of influences exert mechanical properties of adhesive bonds (their strength above all) in a complex it is important to review partially each particular factor in a form of laboratory experiments, also with a respect for a particular type of the adhesive [3, 4, 5, 6].
Technological and constructional aspects affecting bonded joints.
Comparative study on the adhesive properties of different epoxy resins.
The adhesive properties can be influenced e.g. by an unsuitable storing.
Although both above stated groups of influences exert mechanical properties of adhesive bonds (their strength above all) in a complex it is important to review partially each particular factor in a form of laboratory experiments, also with a respect for a particular type of the adhesive [3, 4, 5, 6].
Technological and constructional aspects affecting bonded joints.
Comparative study on the adhesive properties of different epoxy resins.
Online since: August 2010
Authors: Jung Ju Lee, Young Ik Yoo
However, the TWSME is not an inherent property of SMAs, but can only be
obtained through a suitable thermo-mechanical treatment, usually termed training.
Various training methods have been utilized to develop the TWSME, and many factors influencing the development of the TWSME in NiTi have been investigated.
The physical properties of this material are presented in Table 1.
Table 1 Physical properties and chemical composition of the SM495 NiTi rod Physical properties Melting point 1310oC Coefficient of thermal expansion 6.6x10-6/oC Density 6.5g/cm 3 Ultimate tensile strength 1100MPa Electrical resistivity 76μhm-cm Total elongation 10% Elastic Modulus 28-41GPa Transformation temperature 60oC Table 2 Dimensions of NiTi specimens (unit: mm) Shape of specimen Solid cylindrical Tubular A Tubular B Tubular C Tubular D Tubular E Length 38 Outer diameter 13 Inner diameter 3 5 7 9 11 Thickness 5 4 3 2 1 The experimental system is shown in Fig. 1.
In such cases, a difference in the properties of the internal and external regions can occur.
Various training methods have been utilized to develop the TWSME, and many factors influencing the development of the TWSME in NiTi have been investigated.
The physical properties of this material are presented in Table 1.
Table 1 Physical properties and chemical composition of the SM495 NiTi rod Physical properties Melting point 1310oC Coefficient of thermal expansion 6.6x10-6/oC Density 6.5g/cm 3 Ultimate tensile strength 1100MPa Electrical resistivity 76μhm-cm Total elongation 10% Elastic Modulus 28-41GPa Transformation temperature 60oC Table 2 Dimensions of NiTi specimens (unit: mm) Shape of specimen Solid cylindrical Tubular A Tubular B Tubular C Tubular D Tubular E Length 38 Outer diameter 13 Inner diameter 3 5 7 9 11 Thickness 5 4 3 2 1 The experimental system is shown in Fig. 1.
In such cases, a difference in the properties of the internal and external regions can occur.
Online since: January 2015
Authors: Meri Cvetkovska, Ana Trombeva Gavriloska, Marijana Lazarevska, Milos Knezevic, Strahinja Trpevski, Andrej Andreev
The building orientation and the thickness of the thermal isolation of the building envelope are one of the factors affecting the achievement of the Passive House standard.
Other important factors are the windows.
Introduction The radical changes in urban development, related to the way the future buildings will be designed and built, will have an essential influence on reducing the energy consumption as one of the most important factors for sustainable development.
The under roof space is designed to accommodate mechanical equipment.
It is even more apparent in case of passive houses, because despite the need for good heat insulation properties, the use of energy from the sun in winter is of exceptional importance.
Other important factors are the windows.
Introduction The radical changes in urban development, related to the way the future buildings will be designed and built, will have an essential influence on reducing the energy consumption as one of the most important factors for sustainable development.
The under roof space is designed to accommodate mechanical equipment.
It is even more apparent in case of passive houses, because despite the need for good heat insulation properties, the use of energy from the sun in winter is of exceptional importance.
Online since: December 2023
Authors: Joonas Ilmola, Aarne Pohjonen, Jari Larkiola
Introduction
It is important to be able to control the mechanical properties of a steel product, since the application of the product can have special requirements for these properties [1].
The mechanical properties of steel can be controlled by the thermal path during cooling, which is affected by the heat transfer, conduction and latent heat released by the phase transformations, as well as the chemical composition of the steel.
In addition to the rate of cooling, also other factors influence hardness of steel.
Steel hardenability is affected by the chemical composition and the grain size of the austenite prior to the transformation from austenite to ferrite.
The steel composition affects the potency to form the soft phases, ferrite and pearlite, and a suitable composition can be chosen [4–8] to create the desired properties of the steel product, in addition to optimizing the cooling path [9–12] for this purpose [13].
The mechanical properties of steel can be controlled by the thermal path during cooling, which is affected by the heat transfer, conduction and latent heat released by the phase transformations, as well as the chemical composition of the steel.
In addition to the rate of cooling, also other factors influence hardness of steel.
Steel hardenability is affected by the chemical composition and the grain size of the austenite prior to the transformation from austenite to ferrite.
The steel composition affects the potency to form the soft phases, ferrite and pearlite, and a suitable composition can be chosen [4–8] to create the desired properties of the steel product, in addition to optimizing the cooling path [9–12] for this purpose [13].
Online since: September 2013
Authors: Yuan Qiang Tan, Cong Fang Hu
Under different friction factors, several groups of the rubber O-rings have been analyzed, finding that the friction factor is the reason of un-uniform compression.
If one describes the model with two parameters, the above equation becomes the common Mooney-Rivilin constitutive model: (2) This model can illustrate the mechanical properties of the rubber material very well because it satisfies the accuracy requirements for the practical application of the rubber material deformed less than 150%.
When under different friction factors, the smaller friction factor used, the smaller contact stress and contact area with shorter span L between the maximum and minimum, as shown in fig. 3 to 6.
So the compression rate εm also affects the decreasing slope.
Mechanical science and technology. 2000 (9): 625-626
If one describes the model with two parameters, the above equation becomes the common Mooney-Rivilin constitutive model: (2) This model can illustrate the mechanical properties of the rubber material very well because it satisfies the accuracy requirements for the practical application of the rubber material deformed less than 150%.
When under different friction factors, the smaller friction factor used, the smaller contact stress and contact area with shorter span L between the maximum and minimum, as shown in fig. 3 to 6.
So the compression rate εm also affects the decreasing slope.
Mechanical science and technology. 2000 (9): 625-626
Online since: October 2014
Authors: Xiang Xia, Li Ping Liao, Shi-Kun Xie
Technologic Properties of Welding Analysis and The Choice of Welding Method
So called technologic properties of welding is point to welding joins have a tendency of process defects, In particular the likelihood of cracks under some conditions.
Welding red copper without phase change, Low melting point eutectic between grain formation of liquid film; At the same time the linear expansion coefficient and good thermal conductivity characteristics, Copper welding heat-affected zone broadening, Welding stress increases, These factors have increased copper hot tearing tendency
(3) Prone to infiltration of low alloy steel heat affected zone cracking.
in the process of assembling and welding Vessel shell, mechanical property and physical property of material has a remarkable effect on the technologic properties of welding, red copper strength is less than steel, Good plasticity, larger coefficient of heat conductivity, coefficient of heat conductivity is almost 7-11 times larger than steel.
(5) In the surfacing Ni112 forming transition electrode layer on T2 and A407 welding, which good at welding the two kinds of methods, and to guarantee good properties with very few defects.
Welding red copper without phase change, Low melting point eutectic between grain formation of liquid film; At the same time the linear expansion coefficient and good thermal conductivity characteristics, Copper welding heat-affected zone broadening, Welding stress increases, These factors have increased copper hot tearing tendency
(3) Prone to infiltration of low alloy steel heat affected zone cracking.
in the process of assembling and welding Vessel shell, mechanical property and physical property of material has a remarkable effect on the technologic properties of welding, red copper strength is less than steel, Good plasticity, larger coefficient of heat conductivity, coefficient of heat conductivity is almost 7-11 times larger than steel.
(5) In the surfacing Ni112 forming transition electrode layer on T2 and A407 welding, which good at welding the two kinds of methods, and to guarantee good properties with very few defects.
Online since: December 2023
Authors: K.P. Vasantha Kumar, M. Balasubramanian, K. Arumugam
Some researcher have already coupled taguchi approach with grey relation algorithm to find optimum process parameter for achieving high mechanical properties [10-13].
In this research, the Taguchi-based GRA (Grey relational analysis) approach was implemented to multi-optimization of mechanical properties on welding of AA 6061 and AZ31B alloy plates using FSW process.
· The tool diameter ratio has high influence on mechanical properties than tool pin profile
Alagarsamy, Parametric optimization of mechanical properties via FSW on AA5052 using Taguchi based grey relational analysis, Incas Bulletin 13 (2021) 21-30
Balasubramanian, Analyzing the effect of FSW process parameter on mechanical properties for a dissimilar aluminium AA6061 and magnesium AZ31B alloy, Materials Today: Proceedings, 22 (2020) 2883-2889
In this research, the Taguchi-based GRA (Grey relational analysis) approach was implemented to multi-optimization of mechanical properties on welding of AA 6061 and AZ31B alloy plates using FSW process.
· The tool diameter ratio has high influence on mechanical properties than tool pin profile
Alagarsamy, Parametric optimization of mechanical properties via FSW on AA5052 using Taguchi based grey relational analysis, Incas Bulletin 13 (2021) 21-30
Balasubramanian, Analyzing the effect of FSW process parameter on mechanical properties for a dissimilar aluminium AA6061 and magnesium AZ31B alloy, Materials Today: Proceedings, 22 (2020) 2883-2889