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Online since: September 2013
Authors: Norzila Othman, Koh Heng Koh, R.M. Asyraf, S.K. Faisal, J.M. Irwan, Mahamad Mohd Khairil Annas
The Mechanical Properties of PET Fiber Reinforced Concrete From Recycled Bottle Wastes
J.M.
The study was conducted using cylindrical mold of concrete to investigate the performance of the concrete in term of mechanical properties.
There are several factors that contribute to the rapidly growth of plastics consumption such as low density, fabrication capabilities, long life, lightweight, and low cost of production [1].
The mechanical properties of the PET FRC studied are compressive strength, splitting tensile strength, and MOE.
Experimental study of thermo-mechanical properties of recycled PET fiber-reinforced concrete.
The study was conducted using cylindrical mold of concrete to investigate the performance of the concrete in term of mechanical properties.
There are several factors that contribute to the rapidly growth of plastics consumption such as low density, fabrication capabilities, long life, lightweight, and low cost of production [1].
The mechanical properties of the PET FRC studied are compressive strength, splitting tensile strength, and MOE.
Experimental study of thermo-mechanical properties of recycled PET fiber-reinforced concrete.
Online since: September 2013
Authors: A. M. Sanad, M. A. Moussa, H. A. Hassan
Corrosion of reinforcement steel is a major factor affecting the deterioration of reinforced concrete structures.
During corrosion, steel undergoes several phases of chemical reactions with consequent variation in steel section geometry and mechanical properties.
Durability is a main factor affecting the function of reinforced concrete structures during their life time, especially those exposed to marine environments.
This model uses the concrete properties for the 30MPa concrete with the 240/350 steel bar embedded.
Also, a variation in its mechanical and physical properties occurs within the same mix.
During corrosion, steel undergoes several phases of chemical reactions with consequent variation in steel section geometry and mechanical properties.
Durability is a main factor affecting the function of reinforced concrete structures during their life time, especially those exposed to marine environments.
This model uses the concrete properties for the 30MPa concrete with the 240/350 steel bar embedded.
Also, a variation in its mechanical and physical properties occurs within the same mix.
Online since: November 2012
Authors: S. Balaguru, Kumar Shashi, Murali Vela, P. Chellapandi
Among the material parameters, mechanical and physical properties at various temperatures and the type of filler-metal are important parameters.
Material properties SS304 is austenitic Cr-Ni stainless steel.
Table.2 Temperature-dependent material properties of SS304 Temp
Temperature dependant material properties of SS304 are shown in table.2 and temperature dependent material properties of colmonoy is shown in table 3.
Instead, it deactivates them by multiplying their stiffness (or conductivity, or other analogous quantity) by a severe reduction factor .This factor is set to 1.0E-6 by default, but can be given other values.
Material properties SS304 is austenitic Cr-Ni stainless steel.
Table.2 Temperature-dependent material properties of SS304 Temp
Temperature dependant material properties of SS304 are shown in table.2 and temperature dependent material properties of colmonoy is shown in table 3.
Instead, it deactivates them by multiplying their stiffness (or conductivity, or other analogous quantity) by a severe reduction factor .This factor is set to 1.0E-6 by default, but can be given other values.
Online since: April 2014
Authors: Ting Lei, Shan Ju Zhang, Mao Sheng Yang
The mechanical properties of the specimens were evaluated by means of tensile and impact tests.
Take the average of three tests of each mechanical properties value as the experimental results.
Fig. 1 The heat treatment process of tested steel Results and Discussion Mechanical Properties.
The existence of chain and network of precipitates is just one of the factors to reduce the toughness and tensile strength of material.
Increasing deformation ratio has improved the precipitates morphology and mechanical properties.
Take the average of three tests of each mechanical properties value as the experimental results.
Fig. 1 The heat treatment process of tested steel Results and Discussion Mechanical Properties.
The existence of chain and network of precipitates is just one of the factors to reduce the toughness and tensile strength of material.
Increasing deformation ratio has improved the precipitates morphology and mechanical properties.
Online since: August 2015
Authors: Muhammad Sarwar, Abd Majid Mohd Amin
Introduction
The performance of a power plant can be expressed through some common performance factors as heat rate (energy efficiency), thermal efficiency, capacity factor, load factor, economic efficiency, operational efficiency etc.
The beneficial strength and toughness properties of WB 36 arise due to copper precipitates, the coherent particles with a body centered cubic structure that induces a high level of compressive residual stress because of the larger atomic diameter of Cu compared to Fe.
Methodology For this research work, all the joints were made on WB 36 materials of different heats and conforming to the required mechanical and chemical properties according to Table 1 and Table 2.
All the other factors and parameters were controlled and maintained per Table 3.
Non-alloy and alloy steel tubes with specified elevated temperature properties (2008)
The beneficial strength and toughness properties of WB 36 arise due to copper precipitates, the coherent particles with a body centered cubic structure that induces a high level of compressive residual stress because of the larger atomic diameter of Cu compared to Fe.
Methodology For this research work, all the joints were made on WB 36 materials of different heats and conforming to the required mechanical and chemical properties according to Table 1 and Table 2.
All the other factors and parameters were controlled and maintained per Table 3.
Non-alloy and alloy steel tubes with specified elevated temperature properties (2008)
Online since: May 2013
Authors: Ming Jun Liu, Jun Xia Jiang, Hua Ping Chen
Powder forming process can produce parts with homogeneous and satisfactory mechanical properties.
PM processes can develop new and functional parts with homogeneous composition and satisfactory mechanical properties.
The yield stress correspondent to an instantaneous deformation state is called flow stress, which is a function affected by deformation rate, temperature, deformation degree and some other factors, and it is related to properties of the matrix material.
In powder forming, due to the varying powder density during the deformation, flow stress is also affected by the density.
It can be seen from Fig. 3 that except in Kuhn’s researches, become softer with n grows; which n value can bring the more accurate results depends on the material properties.
PM processes can develop new and functional parts with homogeneous composition and satisfactory mechanical properties.
The yield stress correspondent to an instantaneous deformation state is called flow stress, which is a function affected by deformation rate, temperature, deformation degree and some other factors, and it is related to properties of the matrix material.
In powder forming, due to the varying powder density during the deformation, flow stress is also affected by the density.
It can be seen from Fig. 3 that except in Kuhn’s researches, become softer with n grows; which n value can bring the more accurate results depends on the material properties.
Online since: May 2011
Authors: Fang Tian, Wei Xin Hu, He Ming Cheng, Ya Li Sun
But this shortcoming can be improved by incorporating a certain amount of fly ash into the concrete mixture as fly ash is known to be able to enhance the mechanical and transport properties concrete.
The different applications of fly ash produce concrete with totally different properties.
Results and Discussion There are many factors that affect the depth of concrete carbonation, but the main factor is the density of concrete, which affects the CO2 diffusion rate in concrete.
Because there are many complex factors for carbonization, and the data are greatly dispersed, it is difficult to make a statistics on these data to identify the major factors that affect the rate of carbonization.
Table 3 illustrates the affecting factors that yield by applying GRA, which has the greatest influence for carbonation depth.
The different applications of fly ash produce concrete with totally different properties.
Results and Discussion There are many factors that affect the depth of concrete carbonation, but the main factor is the density of concrete, which affects the CO2 diffusion rate in concrete.
Because there are many complex factors for carbonization, and the data are greatly dispersed, it is difficult to make a statistics on these data to identify the major factors that affect the rate of carbonization.
Table 3 illustrates the affecting factors that yield by applying GRA, which has the greatest influence for carbonation depth.
Online since: December 2013
Authors: Xin Guang Li, Ai Guo Zhang, Tie Jun Yang, Jing Tao Du, Peng Lv
The basic characteristic of the piezoelectric materials were analyzed and the affecting factors of characteristics were derived.
The model thickness greatly affected its stiffness and indirectly affected its output characteristics.
Introduction Mechanical equipment vibration was an important engineering problem.
In this paper, the model of single piezoelectric sheet piezoelectric materials was presented by ANSYS finite element techniques and was used to study the characteristics of piezoelectric materials and to derive the factors that were affecting its characteristics.
Factors influencing Analysis.
The model thickness greatly affected its stiffness and indirectly affected its output characteristics.
Introduction Mechanical equipment vibration was an important engineering problem.
In this paper, the model of single piezoelectric sheet piezoelectric materials was presented by ANSYS finite element techniques and was used to study the characteristics of piezoelectric materials and to derive the factors that were affecting its characteristics.
Factors influencing Analysis.
Online since: November 2011
Authors: Diego Mantovani, Ramiro M. Irastorza, Eugenia Blangino, Matteo Achilli, Marta Amadei, Bernard Drouin
Setup to simultaneosly measure mechanical and acoustic properties of gels.
Experiment 2: US and mechanical properties.
Results and Discussion It is remarkable that especial care was taken in preparing these kind hydrogels because of two important factors.
The former is related to the air bubble content of the collagen gels: the faster the gelation process the more bubbles remains within the gel affecting its acoustical properties.
Mechanical properties show similar behavior to those observed by Achilli et al [3].
Experiment 2: US and mechanical properties.
Results and Discussion It is remarkable that especial care was taken in preparing these kind hydrogels because of two important factors.
The former is related to the air bubble content of the collagen gels: the faster the gelation process the more bubbles remains within the gel affecting its acoustical properties.
Mechanical properties show similar behavior to those observed by Achilli et al [3].
Online since: November 2013
Authors: Zi Kai Hua, Yong Wei Fan
Zikai Hua E-mail: zikai_hua@shu.edu.cn
Keywords-biotribology; wear; orthopaedic biomaterial; pin on disk; wear testing
Abstract
Wear has been the primary failure mode affecting the long-term performance of orthopaedic implants.
Introduction Wear has been the primary failure mode affecting the long-term performance of orthopaedic implants, such as hip, knee and spine prostheses [1].
Over the years, numerous different test apparatus, called simulators, have been built to study the wear properties of different prostheses [2-5].
However, in the development of new orthopaedic biomaterials, i.e. biomecical PEEK, X-linked polymers, wear properties of the biomaterials need to be considered without the influence of implants design factors.
However, test results showed that the wear rates, or wear factors in detail, were far lower than the clinical findings [6].
Introduction Wear has been the primary failure mode affecting the long-term performance of orthopaedic implants, such as hip, knee and spine prostheses [1].
Over the years, numerous different test apparatus, called simulators, have been built to study the wear properties of different prostheses [2-5].
However, in the development of new orthopaedic biomaterials, i.e. biomecical PEEK, X-linked polymers, wear properties of the biomaterials need to be considered without the influence of implants design factors.
However, test results showed that the wear rates, or wear factors in detail, were far lower than the clinical findings [6].