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Online since: December 2024
Authors: Tuswan Tuswan, Rizquna Hafizh Kuncarajati, Sarjito Jokosisworo, Parlindungan Manik, Muryadin Muryadin, Samuel Samuel
Environmental factors can induce alterations in thermal conductivity [2].
To investigate the correction coefficient of the insulation thermal conductivity, the factors that affect the thermal conductivity of the insulation material should be confirmed.
The literature indicated that factors influencing thermal conductivity can be categorized as internal factors (such as density, porosity, chemical composition, and manufacturing technique) and external environmental factors [4].
The most important parameter for regulating the mechanical and thermal properties of closed-cell foam is its density[8].
The influence of fiberglass addition on increasing mechanical properties significantly[11][12].
To investigate the correction coefficient of the insulation thermal conductivity, the factors that affect the thermal conductivity of the insulation material should be confirmed.
The literature indicated that factors influencing thermal conductivity can be categorized as internal factors (such as density, porosity, chemical composition, and manufacturing technique) and external environmental factors [4].
The most important parameter for regulating the mechanical and thermal properties of closed-cell foam is its density[8].
The influence of fiberglass addition on increasing mechanical properties significantly[11][12].
Online since: October 2010
Authors: Susanna Eckhard, Manfred Fries
The investigated structure parameters were correlated with the studied mechanical properties using a commercially granule strength tester.
Mechanical granule properties were measured using an uniaxial compression tester (GFP, Etewe).
This can be confirmed with the measured shape factors (0.39 for sample 1, 0.42 for sample 2 and 0.28 for sample 3).
The spray dried granules were analyzed concerning mechanical properties at identical size classes of 63 – 100 µm.
As average micro parameters (shell porosity and primary particles distances) are similar for all investigated granules, the changed mechanical properties are an effect of changed macro structures that are a result of varied suspension properties.
Mechanical granule properties were measured using an uniaxial compression tester (GFP, Etewe).
This can be confirmed with the measured shape factors (0.39 for sample 1, 0.42 for sample 2 and 0.28 for sample 3).
The spray dried granules were analyzed concerning mechanical properties at identical size classes of 63 – 100 µm.
As average micro parameters (shell porosity and primary particles distances) are similar for all investigated granules, the changed mechanical properties are an effect of changed macro structures that are a result of varied suspension properties.
Online since: July 2021
Authors: Raul Fangueiro, Gonzalo Mármol, Francisco P. Brito, Usha Kiran Sanivada
The main factors affecting the damage of NFRCs are shown in Fig. 2.
Factors Affecting Impact Resistance Primary Factors Secondary Factors Resin Toughness Fabric Architecture Thermoset Resin Thermoplastic Resin 2 D FRC 3 D FRC Uni Directional Non Crimp Fabric Bi Directional Orthogonal Woven Commposite Non Woven Compsote Angle InInterlock Woven Composite Impactor Geometry Environment Conditions Size Mass Shape Humidity Hygro-Thermal Low/High Temp Fabric Hybridization Repeated Impact Ply Angle Ply Thickness Stacking Sequence Matrix Hybridization Summary Fig. 2 Factors Affecting Impact Resistance of Fibre Reinforced Composites [16] The mechanical properties such as tensile strength, flexural strength, impact toughness, and fracture toughness will be improved with the increment of the fibre loadings in the NFRC and the values of the fracture toughness and fibre loadings are proportional to each other up to a certain limit and decrease thereon.
The most critical factors affecting the fracture toughness and impact energy of biocomposites are the physical and chemical treatments that improve the interfacial adhesion at the fiber-matrix interface and also the type of hybridization process [2].
Polat, “Review of the Main Factors Controlling the Fracture Toughness and Impact Strength Properties of Natural Composites,” Mater.
Nayak, “Influence of Different Treated Cellulose Fibers on the Mechanical and Thermal Properties of Poly(lactic acid),” ACS Sustain.
Factors Affecting Impact Resistance Primary Factors Secondary Factors Resin Toughness Fabric Architecture Thermoset Resin Thermoplastic Resin 2 D FRC 3 D FRC Uni Directional Non Crimp Fabric Bi Directional Orthogonal Woven Commposite Non Woven Compsote Angle InInterlock Woven Composite Impactor Geometry Environment Conditions Size Mass Shape Humidity Hygro-Thermal Low/High Temp Fabric Hybridization Repeated Impact Ply Angle Ply Thickness Stacking Sequence Matrix Hybridization Summary Fig. 2 Factors Affecting Impact Resistance of Fibre Reinforced Composites [16] The mechanical properties such as tensile strength, flexural strength, impact toughness, and fracture toughness will be improved with the increment of the fibre loadings in the NFRC and the values of the fracture toughness and fibre loadings are proportional to each other up to a certain limit and decrease thereon.
The most critical factors affecting the fracture toughness and impact energy of biocomposites are the physical and chemical treatments that improve the interfacial adhesion at the fiber-matrix interface and also the type of hybridization process [2].
Polat, “Review of the Main Factors Controlling the Fracture Toughness and Impact Strength Properties of Natural Composites,” Mater.
Nayak, “Influence of Different Treated Cellulose Fibers on the Mechanical and Thermal Properties of Poly(lactic acid),” ACS Sustain.
Online since: August 2018
Authors: Lateef O. Mudashiru, Samuel O. Alamu, Emmanuel O. Sangotayo
Olawale et al. performed correlation of process variables in shielded metal arc welding (SMAW) and post weld heat treatment on some mechanical properties of low carbon steel weld.
First, welds tend to be regions of weakness in a structure due to stress concentration effects and poor material properties.
These mathematical models show the dependency of the mechanical properties of the steel sample on the design variables which are welding speed, welding current and electrode diameter.
For two factors interaction, input combination of welding speed and electrode diameter has the highest F-value of 114.56 and thereby most significant on the tensile strength property.
“Effect of heat treatment on mechanical properties and microstructure of NST 37-2 steel” Journal of Minerals and Material Characteristics & Engineering, 10: 299-308
First, welds tend to be regions of weakness in a structure due to stress concentration effects and poor material properties.
These mathematical models show the dependency of the mechanical properties of the steel sample on the design variables which are welding speed, welding current and electrode diameter.
For two factors interaction, input combination of welding speed and electrode diameter has the highest F-value of 114.56 and thereby most significant on the tensile strength property.
“Effect of heat treatment on mechanical properties and microstructure of NST 37-2 steel” Journal of Minerals and Material Characteristics & Engineering, 10: 299-308
Online since: November 2024
Authors: Valeria Arrighi, Ahmed Zaed, Arno Kraft, Wanisa Abdussalam-Mohammed, Moussa Khlifa
Nanosize inorganic particles affect larger improvements in mechanical properties compared to micron-sized fillers.
For these materials, the improvement in dynamic mechanical properties is similar to that of crosslinked polymers and provides clear evidence for suppression of polymer flow.
Mechanical properties of particulate organic natural filler-reinforced polymer composite: A review.
The role of the distance between filler aggregates in the dynamic properties of filled vulcanizates.
Dynamic mechanical study of the factors affecting the two glass tranistion behavior of filled polymers .
For these materials, the improvement in dynamic mechanical properties is similar to that of crosslinked polymers and provides clear evidence for suppression of polymer flow.
Mechanical properties of particulate organic natural filler-reinforced polymer composite: A review.
The role of the distance between filler aggregates in the dynamic properties of filled vulcanizates.
Dynamic mechanical study of the factors affecting the two glass tranistion behavior of filled polymers .
Online since: January 2022
Authors: Hafida Zmamou, Daniel Levacher, Nathalie Leblanc, Irini Djeran Maigre, Andry Razakamanantsoa, Mazhar Hussain
Factors such as type of fibers, percentage of fibers, length of fibers and distribution of fibers inside the bricks have significant effect on mechanical, physical and thermal properties of biobased composite materials.
It can be observed by tests such as indirect tensile strength, compressive strength for mechanical characteristics, density, shrinkage, color for physical properties, thermal conductivity and resistivity for thermal properties, and inundation test for durability of crude bricks.
Physical properties of bricks are studied through density and shrinkage.
Thermal properties are studied with thermal conductivity and resistivity test.
The mechanical and physical properties of unfired earth bricks stabilized with gypsum and Elazıg ̆Ferrochrome slag.
It can be observed by tests such as indirect tensile strength, compressive strength for mechanical characteristics, density, shrinkage, color for physical properties, thermal conductivity and resistivity for thermal properties, and inundation test for durability of crude bricks.
Physical properties of bricks are studied through density and shrinkage.
Thermal properties are studied with thermal conductivity and resistivity test.
The mechanical and physical properties of unfired earth bricks stabilized with gypsum and Elazıg ̆Ferrochrome slag.
Online since: November 2014
Authors: Xi Hai Hao, Jing Deng, Zheng Jie Cao, Qiong Xue, Wen Li
The mechanical properties firstly increased with the BMH content and then rapidly decreased.
Thereby the mechanical properties was increased in a certain range.
So that the mechanical properties of film becomes worse too.
These results suggested that the addition of inorganic BMH particles had adversely affected the film optical properties.
Antimicrobial, water vapour permeability, mechanical and thermal properties of casein based Zataraia multiflora Boiss.
Thereby the mechanical properties was increased in a certain range.
So that the mechanical properties of film becomes worse too.
These results suggested that the addition of inorganic BMH particles had adversely affected the film optical properties.
Antimicrobial, water vapour permeability, mechanical and thermal properties of casein based Zataraia multiflora Boiss.
Online since: October 2006
Authors: Marcin Leonowicz, L.A. Ivanchenko, Magdalena Szutkowska
The hysteresis loops were determined in order
to asses the possibility of application of this material as affecting the drug delivery carriers.
Selected properties of the tested samples.
Ca10(PO4)6O-Y Selected mechanical properties of tested materials are presented in Table 3.
Summary of the mechanical properties.
Mechanical properties of the OK6+2wt% Fe3O4 (specimen 3) are somewhat different from the others materials tested.
Selected properties of the tested samples.
Ca10(PO4)6O-Y Selected mechanical properties of tested materials are presented in Table 3.
Summary of the mechanical properties.
Mechanical properties of the OK6+2wt% Fe3O4 (specimen 3) are somewhat different from the others materials tested.
Online since: October 2010
Authors: Zhou Wei, Xiao Xia Zhang
Because of small specimen and contact relationship between wedged pressure head and wedged cuts, complex stress state is affected by many factors resulting from interface, and also by the thickness of coating.
Introduction Thermal sprayed coatings, which have excellent properties such as hardness, wear and corrosion resistance, are widely used in engineering application.
Many testing methods such as shear adhesion test, tensile adhesion test [2], and so on have been conducted to evaluate adhesion properties of coating.
Mechanical model of the specimen is shown in Fig. 2.
So the coating has good mechanical properties.
Introduction Thermal sprayed coatings, which have excellent properties such as hardness, wear and corrosion resistance, are widely used in engineering application.
Many testing methods such as shear adhesion test, tensile adhesion test [2], and so on have been conducted to evaluate adhesion properties of coating.
Mechanical model of the specimen is shown in Fig. 2.
So the coating has good mechanical properties.
Online since: May 2012
Authors: Wei Lv, Zhuang Li, Di Wu
A feasible combination of free-cutting additives should yield a stainless steel product with acceptable machining and mechanical properties.
The results of the comparative evaluation of the metallurgical properties, mechanical properties and machinability of this free machining steel with the performance of the existing austenitic stainless steel were described.
Specimens cut from the bars were examined as to the metallurgical properties, machinability and mechanical properties.
And as the same time, the mechanical properties of the free cutting austenitic stainless steel are still approached those of the conventional austenitic stainless steel.
A feasible combination of free-cutting additives should yield a stainless steel product with acceptable machining and mechanical properties.
The results of the comparative evaluation of the metallurgical properties, mechanical properties and machinability of this free machining steel with the performance of the existing austenitic stainless steel were described.
Specimens cut from the bars were examined as to the metallurgical properties, machinability and mechanical properties.
And as the same time, the mechanical properties of the free cutting austenitic stainless steel are still approached those of the conventional austenitic stainless steel.
A feasible combination of free-cutting additives should yield a stainless steel product with acceptable machining and mechanical properties.