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Online since: June 2020
Authors: Siti Halipah Ibrahim, Abdul Wafi Razali, Nur Fadilah Darmansah, Afzan Ahmad Zaini, Nadia Zaini, Sitti Diana Tamjehi, Gui Hun Chuen
The mechanical properties of concrete such as elastic modulus, peak temperature and strength can be improved by replacing cement with POFA [10]. 30% of cement replacement to POFA in concrete mixture reduced the concrete strength.
The results for 7.5% replacement was slightly higher than 5% was due to environmental factors when conducting the test.
The main factor affecting the mechanical properties of POFA concrete was the particle size of POFA, where finer particle of POFA can increase the compressive strength as compared with the ground ash POFA resulting from chemical reaction of higher Silicon dioxide (SiO2) content [13].
Abubakar, Properties of concrete containing high volume palm oil fuel ash: a short-term investigation, Malaysia.
Sooraj, Effect of palm oil fuel ash (POFA) on strength properties of concrete, Int.
The results for 7.5% replacement was slightly higher than 5% was due to environmental factors when conducting the test.
The main factor affecting the mechanical properties of POFA concrete was the particle size of POFA, where finer particle of POFA can increase the compressive strength as compared with the ground ash POFA resulting from chemical reaction of higher Silicon dioxide (SiO2) content [13].
Abubakar, Properties of concrete containing high volume palm oil fuel ash: a short-term investigation, Malaysia.
Sooraj, Effect of palm oil fuel ash (POFA) on strength properties of concrete, Int.
Online since: March 2019
Authors: Radim Kopřiva, Ondrej Bursik, Petra Petelova, Barbora Maresova
Introduction
The small punch test (SPT) is one of the preferred miniaturized testing methods developed for characterizing selected mechanical properties of materials.
The test does not cover the derivation of basic mechanical properties, but current activities of ASTM Subcommittee E10.02 Behavior and Use of Nuclear Structural Materials go in that direction [14].
Fe [N] Fm [N] um [mm] uf [mm] ESP [J] ETO [J] EPL [J] hf [mm] Chamfer 267.9 1783.6 1.484 1.647 1.819 1.543 1.125 0.159 Radius 222.9 1755.4 1.454 1.702 1.960 1.541 1.370 0.140 One of the other factors that may affect the resulting values is the tightening torque or in other words the boundary conditions.
“Small Punch Tests to Estimate the Mechanical Properties of Steels for Steam Power Plant: II.
“Recent Developments in Small Punch Testing: Tensile Properties and DBTT.”
The test does not cover the derivation of basic mechanical properties, but current activities of ASTM Subcommittee E10.02 Behavior and Use of Nuclear Structural Materials go in that direction [14].
Fe [N] Fm [N] um [mm] uf [mm] ESP [J] ETO [J] EPL [J] hf [mm] Chamfer 267.9 1783.6 1.484 1.647 1.819 1.543 1.125 0.159 Radius 222.9 1755.4 1.454 1.702 1.960 1.541 1.370 0.140 One of the other factors that may affect the resulting values is the tightening torque or in other words the boundary conditions.
“Small Punch Tests to Estimate the Mechanical Properties of Steels for Steam Power Plant: II.
“Recent Developments in Small Punch Testing: Tensile Properties and DBTT.”
Online since: March 2011
Authors: Ji Gang Wu, Kuan Fang He, Qi Li, Xue Jun Li
The forming of molten pool is directly related to the shape of welding seam, penetration level, joint microstructure and properties and distribution of stress.
The variation of thermal physical properties with temperature changing between 20~3000℃ can be calculated through temperature function as coefficient of heat conductivity, specific heat, density ,and heat transfer coefficient[5,6].
Meanwhile, the thermal physical properties are interpolated in the unknown temperature range.
Welding temperature field of different welding speed is calculated, different welding speed affect to molten pool temperature field is analyzed, which is basis for further analysis to welding pool dynamic behavior and weld seam shape factors of twin arc high-speed submerged welding.
[5] Q.G.Meng, H.Y.Fang, W.L.Xu, et al: Chinese Journal of Mechanical Engineering Vol.41-4 (2005) P.110~113
The variation of thermal physical properties with temperature changing between 20~3000℃ can be calculated through temperature function as coefficient of heat conductivity, specific heat, density ,and heat transfer coefficient[5,6].
Meanwhile, the thermal physical properties are interpolated in the unknown temperature range.
Welding temperature field of different welding speed is calculated, different welding speed affect to molten pool temperature field is analyzed, which is basis for further analysis to welding pool dynamic behavior and weld seam shape factors of twin arc high-speed submerged welding.
[5] Q.G.Meng, H.Y.Fang, W.L.Xu, et al: Chinese Journal of Mechanical Engineering Vol.41-4 (2005) P.110~113
Online since: March 2010
Authors: Zhan Qiang Liu, Zhen Yu Shi
Guo and
Liu [9] investigated material properties of hardened AISI 52100 steel and demonstrated that
hardness greatly influences the material properties accounting for high variation in flow stress
properties.
Table 1 and Table 2 show the chemical composition and mechanical properties of AISI 440C steel respectively.
The factors and factor levels are summarized in Table 3.
Additionally, plots of significant factors corresponding to ANOVA analysis were constructed.
These plots provide a more in-depth analysis of the significant factors related to the surface roughness.
Table 1 and Table 2 show the chemical composition and mechanical properties of AISI 440C steel respectively.
The factors and factor levels are summarized in Table 3.
Additionally, plots of significant factors corresponding to ANOVA analysis were constructed.
These plots provide a more in-depth analysis of the significant factors related to the surface roughness.
Online since: February 2024
Authors: Devi Ardelia Wardani, Fahimah Martak, Hanna Eryati Nur'ain, Okky Putri Prastuti, Yuni Kurniati
The physical and mechanical properties of the composites were evaluated based on the SNI 03-2059-2006 and SNI-01-4449-2006 standard.
This epoxy resin is water, heat, and chemical resistant material, flexible and has strong mechanical properties and good electrical insulating properties [6].
This study aims to determine the physical and mechanical properties of rice straw hydrophobic composites and the effect of volume fraction and alkalization treatment on fiber.
The cellulose content is influenced by the place of growth, the type of biomass, the age of the plant, the location in the plant stem and environmental factors [17].
And one of the factors that affect the bond between the fiber and the matrix is voids, namely the presence of gaps in the fiber or imperfect shape of the fiber which can cause the matrix to be unable to fill the empty space in the mold.
This epoxy resin is water, heat, and chemical resistant material, flexible and has strong mechanical properties and good electrical insulating properties [6].
This study aims to determine the physical and mechanical properties of rice straw hydrophobic composites and the effect of volume fraction and alkalization treatment on fiber.
The cellulose content is influenced by the place of growth, the type of biomass, the age of the plant, the location in the plant stem and environmental factors [17].
And one of the factors that affect the bond between the fiber and the matrix is voids, namely the presence of gaps in the fiber or imperfect shape of the fiber which can cause the matrix to be unable to fill the empty space in the mold.
Online since: October 2010
Authors: Min Li Zheng, Shu Cai Yang, Yi Hang Fan
A. also thinks that the rigidity and cutting speed are the two main factors to
affect the chip shape
[5].
Titanium alloy material of Ti6Al4V has the following properties as shown in Table 1.
Table1 Material properties of workpiece Material Properties TiAl6V4 Young's modulus(GPa) 114 Poission's ratio 0.342 Extensive ratio 10% Tensile strength (MPa) 920 Yield strength(MPa) 860 Hardness(Bhn) 320 Experimental Equipments.
In the high speed cutting process, a large amount of heat is generated by friction and other factors.
Zhang: Mechanical Design and Manufacture Vol.5 (2001), p.83
Titanium alloy material of Ti6Al4V has the following properties as shown in Table 1.
Table1 Material properties of workpiece Material Properties TiAl6V4 Young's modulus(GPa) 114 Poission's ratio 0.342 Extensive ratio 10% Tensile strength (MPa) 920 Yield strength(MPa) 860 Hardness(Bhn) 320 Experimental Equipments.
In the high speed cutting process, a large amount of heat is generated by friction and other factors.
Zhang: Mechanical Design and Manufacture Vol.5 (2001), p.83
Online since: June 2014
Authors: Yu Tao Xu, Dan Jiang, Jian Feng Ren, Shu Tao Zhao
Introduction
In power system, the mechanical properties parameter of high voltage circuit breaker (HV) is an important basis of judgment and guarantee the normal work of the circuit breaker, it has a close relationship with safe and reliable of power grid [1].
In the test of high voltage circuit breaker's mechanical characteristic parameters, the parameters about breaker’s moving contact is very important.
K-means clustering algorithm is a continuously iterative process, the main factors of influencing the clustering results are as follows: number of clustering k, the initial clustering center and the distance between objects .
Due to the L * a * b color space separate color and brightness thoroughly, it overcome influence of illumination of color differentiation, the factors affecting the size of the weighted Euclidean distance is mainly on the *a and *b, the weighted of and *b should as far as possible big, and because the object of study mainly distributed on *a coordinates, so it should have a maximum value, after repeated experiments, the best values are: 0.01, 1.00, 0.1.
For this purpose, the segmentation result affects the final experiment results directly, in view of the different types of images, the final segmentation quality evaluation indexes are different.
In the test of high voltage circuit breaker's mechanical characteristic parameters, the parameters about breaker’s moving contact is very important.
K-means clustering algorithm is a continuously iterative process, the main factors of influencing the clustering results are as follows: number of clustering k, the initial clustering center and the distance between objects .
Due to the L * a * b color space separate color and brightness thoroughly, it overcome influence of illumination of color differentiation, the factors affecting the size of the weighted Euclidean distance is mainly on the *a and *b, the weighted of and *b should as far as possible big, and because the object of study mainly distributed on *a coordinates, so it should have a maximum value, after repeated experiments, the best values are: 0.01, 1.00, 0.1.
For this purpose, the segmentation result affects the final experiment results directly, in view of the different types of images, the final segmentation quality evaluation indexes are different.
Online since: January 2025
Authors: Majid Ali, Arshad Ullah
The investigation suggested that deterioration is influenced by factors such as climate effects, material properties, and characteristics of vehicular loads [2].
Physical and mechanical properties of fibers [20].
Adding fibers to concrete mixes increases mechanical properties like compressive, split tensile, and flexural strength
Mechanical and dynamic properties of coconut fibre reinforced concrete.
Mechanical, Dynamic and Absorption Properties of Hybrid Fiber Reinforced Concrete for Rigid Pavements Application.
Physical and mechanical properties of fibers [20].
Adding fibers to concrete mixes increases mechanical properties like compressive, split tensile, and flexural strength
Mechanical and dynamic properties of coconut fibre reinforced concrete.
Mechanical, Dynamic and Absorption Properties of Hybrid Fiber Reinforced Concrete for Rigid Pavements Application.
Online since: December 2013
Authors: M.R.M. Akramin, Ahmad K. Ariffin, A. Zulkifli
Material properties that have been used in this study are summarized in Table 1.
The crack opening resistance is a function of the specimen’s geometry, material properties, orientation with respect to loading and the crack geometry.
The second parameter affected in this study is force applied on the vertebral body with correlation 0.192.
Chui, Bone material properties and fracture analysis: Needle insertion for spinal surgery, Journal of The Mechanical Behavior of Biomedical Materials 1 (2008) 115-139
Guo, Some factors that affect the comparison between isotropic and orthotropic inhomogeneous finite element material models of femur, Medical Engineering & Physics 32 (2010) 553-560
The crack opening resistance is a function of the specimen’s geometry, material properties, orientation with respect to loading and the crack geometry.
The second parameter affected in this study is force applied on the vertebral body with correlation 0.192.
Chui, Bone material properties and fracture analysis: Needle insertion for spinal surgery, Journal of The Mechanical Behavior of Biomedical Materials 1 (2008) 115-139
Guo, Some factors that affect the comparison between isotropic and orthotropic inhomogeneous finite element material models of femur, Medical Engineering & Physics 32 (2010) 553-560
Online since: October 2015
Authors: Eckhard Pippel, Martin Kittler, Manfred Reiche, Hans Kosina, Alois Lugstein, Hartmut Uebensee
Electronic properties of dislocations
M.
Measurements on defined dislocation arrays proved numerous exceptional electronic properties.
This indicates that defect engineering moves to single atom treatments and a consequent transition to single electron transistors including the employment of quantum mechanical properties associated to the wave behavior of single excess carriers [2].
These findings demonstrate that dislocations are nanowires having exceptional electronic properties.
Such high strain values cause dramatic changes of the band structure and therefore of the electronic properties.
Measurements on defined dislocation arrays proved numerous exceptional electronic properties.
This indicates that defect engineering moves to single atom treatments and a consequent transition to single electron transistors including the employment of quantum mechanical properties associated to the wave behavior of single excess carriers [2].
These findings demonstrate that dislocations are nanowires having exceptional electronic properties.
Such high strain values cause dramatic changes of the band structure and therefore of the electronic properties.