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Online since: May 2020
Authors: N.P. Lukutsova, E.G. Borovik, D.A. Pehenko
Introduction
The improvement of the physical and mechanical properties of concrete by using nanosized materials with various functional properties plays an important role in the targeted regulation of hydration and structure formation processes of cement composites [1-8].
One of these factors is the use of silica nanostructures with abnormally high surface energy and a powerful dispersion effect [17, 18].
The same factors are very important in the formation of the strength structure of cement stone and concrete.
Therefore, it is natural to believe that the cement stone porosity is one of the main structural factors that determine the strength and other technical properties [19].
Brusser, Structure and Properties of Cement Concretes, Moscow, 1979
One of these factors is the use of silica nanostructures with abnormally high surface energy and a powerful dispersion effect [17, 18].
The same factors are very important in the formation of the strength structure of cement stone and concrete.
Therefore, it is natural to believe that the cement stone porosity is one of the main structural factors that determine the strength and other technical properties [19].
Brusser, Structure and Properties of Cement Concretes, Moscow, 1979
Online since: April 2018
Authors: Ľuboš Kaščák, Emil Spišák, Janka Majerníková, René Kubík
Commonly, the weld quality is affected by factors such as the intensity of electrical current, electrode force, the materials thicknesses, welding time, electrode type and size [4,7].
The mechanical properties of spot welds as well as the affecting the microstructure of the weld by welding current was investigated in [24,25].
The influence of electrode force on the mechanical properties of spot welds was observed in [26].
The mechanical properties of dual-phase steels strongly depend on their material structure properties.
Ball, Influence of heat treatment on mechanical properties of clinched joints in titanium alloy sheets, Int.
The mechanical properties of spot welds as well as the affecting the microstructure of the weld by welding current was investigated in [24,25].
The influence of electrode force on the mechanical properties of spot welds was observed in [26].
The mechanical properties of dual-phase steels strongly depend on their material structure properties.
Ball, Influence of heat treatment on mechanical properties of clinched joints in titanium alloy sheets, Int.
Online since: March 2022
Authors: Endarto Yudho Wardhono, Nufus Kanani, Wardalia Wardalia, Rahmayetty Rahmayetty
Milkfish satay susceptible to be spoiled due to the moisture contents, chemical, and physical factors, however it can impact to the short shelf life.
Blending chitosan (CH) and synthetic polymer with good mechanical properties such as poly (ethylene oxide) (PEO), poly (vinyl alcohol) (PVA), and poly (lactic acid) (PLA) can improve the mechanical properties of blend film [15][16].
Integrate the chitosan (CH) enrich with essential oil blend film and PLA can improve the versatile properties such as mechanical properties and water barrier properties of blend film [21].
Blend film with various essential oil contents were characterized to evaluated the blend film mechanical properties.
Result and Discussion Mechanical Properties Analysis.
Blending chitosan (CH) and synthetic polymer with good mechanical properties such as poly (ethylene oxide) (PEO), poly (vinyl alcohol) (PVA), and poly (lactic acid) (PLA) can improve the mechanical properties of blend film [15][16].
Integrate the chitosan (CH) enrich with essential oil blend film and PLA can improve the versatile properties such as mechanical properties and water barrier properties of blend film [21].
Blend film with various essential oil contents were characterized to evaluated the blend film mechanical properties.
Result and Discussion Mechanical Properties Analysis.
Online since: September 2011
Authors: Xiao Chu Liu, Li Yao, Hua Long Wu, Wen Xiong Li
The mechanical properties and the conductive properties of the material were tested and we found the graphite-based cementitious material which contains 30% to 50% of graphite could be an applicable material for the soil moisture probe.
Even if the probe has a corrosion resistance to passive properties, it still formed multi-element metal film on its surface.
In order to explore the performance of this material, we prepared eight different cementitious materials of different graphite contents, and tested their mechanical properties and electrical conductivity.
The pressure generated by an adult weight is about 2.5 × 10-2MPa ~ 4.0 × 10-2MPa.We made compression tests to test the mechanical properties of the material.
Therefore, we should improve the strength of cementitious material as much as possible, but not affect its humidity property.
Even if the probe has a corrosion resistance to passive properties, it still formed multi-element metal film on its surface.
In order to explore the performance of this material, we prepared eight different cementitious materials of different graphite contents, and tested their mechanical properties and electrical conductivity.
The pressure generated by an adult weight is about 2.5 × 10-2MPa ~ 4.0 × 10-2MPa.We made compression tests to test the mechanical properties of the material.
Therefore, we should improve the strength of cementitious material as much as possible, but not affect its humidity property.
Online since: July 2005
Authors: Kwang Seon Shin, Hwa Chul Jung
The research activities have been concentrated on many different fields, including the development of
high pressure die casting process and semi-solid processing, development of high strength wrought
alloys and components, and characterization of microstructure, mechanical properties as well as
corrosion properties.
Since the mechanical properties of the final cast products are significantly affected by the castability of the reheated billets, the SSP of Mg alloy components requires reliable production of the high quality Mg billets for the subsequent SSP.
One of the most important factors in casting Mg alloy billets is the safety of the process.
New wrought Mg alloys with better mechanical properties have been developed at SNU [16].
The research activities include the development of high pressure die casting process and semi-solid processing, development of high strength wrought alloys and components, and characterization of microstructure, mechanical properties as well as corrosion properties.
Since the mechanical properties of the final cast products are significantly affected by the castability of the reheated billets, the SSP of Mg alloy components requires reliable production of the high quality Mg billets for the subsequent SSP.
One of the most important factors in casting Mg alloy billets is the safety of the process.
New wrought Mg alloys with better mechanical properties have been developed at SNU [16].
The research activities include the development of high pressure die casting process and semi-solid processing, development of high strength wrought alloys and components, and characterization of microstructure, mechanical properties as well as corrosion properties.
Online since: October 2018
Authors: Phimraphas Ngamsantivongsa, S. Boonthalarath, B. Wong-Ek, S. Nuanklai, T. Kanasittiboon, A. Bunluekadee
Results and Discussions
Ablative Properties.
Mechanical Properties.
The mechanical properties of the composites remain at an acceptable level [15].
Wang et al., Mechanical Properties with High Temperature and the Microstructure of Carbon/Phenolic Ablative Composites, J.
Winya et al., Study of factors affecting the ablation rate of phenolic resin/fiber glass, Int.
Mechanical Properties.
The mechanical properties of the composites remain at an acceptable level [15].
Wang et al., Mechanical Properties with High Temperature and the Microstructure of Carbon/Phenolic Ablative Composites, J.
Winya et al., Study of factors affecting the ablation rate of phenolic resin/fiber glass, Int.
Online since: October 2010
Authors: Chang Hong Liu, Yan Yan Li, Wen He, Jia Yuan Ding, Yun Long Ai
Compared with cold pressing, the comprehensive properties of warm pressing are better.
The preparation of green bodies play a key and basic role among the factors of microwave sintering, because the sintering process bases on the material's interaction with microwaves, it is thought that the heating state of the sample can be affected by the different compaction methods.
As shown in Fig.3 (b), the warm pressing sample is better, and has higher mechanical properties.
As we all know, grains’ refining strengthening is beneficial to mechanical properties.
Fig.4 XRD patterns of MoSi2 compacted by cold pressing and warm pressing Mechanical properties of the composite ceramics at room temperature.
The preparation of green bodies play a key and basic role among the factors of microwave sintering, because the sintering process bases on the material's interaction with microwaves, it is thought that the heating state of the sample can be affected by the different compaction methods.
As shown in Fig.3 (b), the warm pressing sample is better, and has higher mechanical properties.
As we all know, grains’ refining strengthening is beneficial to mechanical properties.
Fig.4 XRD patterns of MoSi2 compacted by cold pressing and warm pressing Mechanical properties of the composite ceramics at room temperature.
Online since: February 2011
Authors: Mei Lin Zhang, Ming Wei Zhao
It is known that the surface structure has significant influence on the microstructure and properties of the final coating such as adhesion [5-7].
It was stated that grit blasting generated sufficient roughness, which ensured mechanical anchoring between coating and substrate.
By varying the grit blasting pressure, the adhesive properties of WC-Co coatings are positively affected by roughness variations.
Furthermore, the surface roughness and thermal conductivity greatly affected the structure and properties of coating [12].
These factors can be used to affect heat affected area of the grit blasted specimen was larger than that of the electrospark one.
It was stated that grit blasting generated sufficient roughness, which ensured mechanical anchoring between coating and substrate.
By varying the grit blasting pressure, the adhesive properties of WC-Co coatings are positively affected by roughness variations.
Furthermore, the surface roughness and thermal conductivity greatly affected the structure and properties of coating [12].
These factors can be used to affect heat affected area of the grit blasted specimen was larger than that of the electrospark one.
Online since: October 2014
Authors: Ye Suel Park, Saemi Park, Joong Seong Lee, Gyung Min Choi
Fuel composition affects flame properties including heating value, and adiabatic flame temperature.
In turn, these properties changes gas turbine primary parameter such as compressor inlet mass flow, compressor pressure ratio, fuel mass flow, and cooling air mass flow.
Therefore, if the condition is changes (e.g., a decrease in heating value), the matching between the turbine and the compressor causes a change in the working pressure ratio of compressor thereby affecting the surge margin [3].
Fig. 2 represents real and simulation data of power and heat rate correction factor for various ambient temperature.
Correction Factor of Gas Turbine Main Parameter using TIT Control TET control.
In turn, these properties changes gas turbine primary parameter such as compressor inlet mass flow, compressor pressure ratio, fuel mass flow, and cooling air mass flow.
Therefore, if the condition is changes (e.g., a decrease in heating value), the matching between the turbine and the compressor causes a change in the working pressure ratio of compressor thereby affecting the surge margin [3].
Fig. 2 represents real and simulation data of power and heat rate correction factor for various ambient temperature.
Correction Factor of Gas Turbine Main Parameter using TIT Control TET control.
Online since: October 2018
Authors: Ahmed El-Ghannam, Arief Cahyanto, Muga Restunaesha, Myrna Nurlatifah Zakaria, Andri Rezano
The mechanical strength of pulp capping material based on carbonate apatite and silica calcium-phosphate composite (CO3Ap-SCPC) is one of the key factors for the success of the material in protecting the vitality of the pulp during the formation of apatite and dentin reparative.
Modifying the CO3Ap cement with the addition of various concentration of SCPC and Ca(OH)₂ expected could improve the mechanical properties of this cement [3,16].
Conclusion The addition of various concentrations of SCPC and Ca(OH)2 have an effect in forming CO₃Ap and also improving the mechanical properties of the cement.
Braga, Ion Release and Mechanical Properties of Calcium Silicate and Calcium Hydroxide Materials Used for Pulp Capping, Int.
Hasratiningsih, Mechanical Strength Properties of Injectable Carbonate Apatite Cement with Various Concentration of Sodium Carboxymethyl Cellulose, Key Eng.
Modifying the CO3Ap cement with the addition of various concentration of SCPC and Ca(OH)₂ expected could improve the mechanical properties of this cement [3,16].
Conclusion The addition of various concentrations of SCPC and Ca(OH)2 have an effect in forming CO₃Ap and also improving the mechanical properties of the cement.
Braga, Ion Release and Mechanical Properties of Calcium Silicate and Calcium Hydroxide Materials Used for Pulp Capping, Int.
Hasratiningsih, Mechanical Strength Properties of Injectable Carbonate Apatite Cement with Various Concentration of Sodium Carboxymethyl Cellulose, Key Eng.