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Online since: May 2016
Authors: Ageng Bekti Prakoso, Stefanus Adi Kristiawan
The mechanical properties of polymer mortar have been the subject of interest of many investigators.
Ribeiro et al. [5] showed that the most decisive factor affecting the flexural properties of polymer mortar is polymer type, followed by polymer content.
The flexural properties of UPR-mortars are affected by the UPR content especially at early age.
Handbook of polymer-modified concrete and mortars: properties and process technology.
Mechanical properties of unsaturated polyester resin.
Ribeiro et al. [5] showed that the most decisive factor affecting the flexural properties of polymer mortar is polymer type, followed by polymer content.
The flexural properties of UPR-mortars are affected by the UPR content especially at early age.
Handbook of polymer-modified concrete and mortars: properties and process technology.
Mechanical properties of unsaturated polyester resin.
Online since: December 2024
Authors: Huynh Thanh Liem, Le Quan Ngoc Tran, Zunaida Zakaria
The binderless chipboards’ thickness, density, and flexural properties were investigated.
Among this, coconut fiber has been studied and shows potential as raw material to produce furniture or building materials due to its fibers’s excellent thermal, physical and mechanical properties.
Rahman, Experimental study on the fabrication and mechanical properties of medium-density particleboards from coconut coir.
Sato, Manufacture and mechanical properties of binderless boards from kenaf core, J.
Niemz, Effect of high temperature on the change in color, dimensional stability and mechanical properties of stability and mechanical properties of spruce wood, Holzforschung. 57 (2003) 539-546
Among this, coconut fiber has been studied and shows potential as raw material to produce furniture or building materials due to its fibers’s excellent thermal, physical and mechanical properties.
Rahman, Experimental study on the fabrication and mechanical properties of medium-density particleboards from coconut coir.
Sato, Manufacture and mechanical properties of binderless boards from kenaf core, J.
Niemz, Effect of high temperature on the change in color, dimensional stability and mechanical properties of stability and mechanical properties of spruce wood, Holzforschung. 57 (2003) 539-546
Online since: October 2005
Authors: Ling Xue Kong, Z. Peng
On the other hand, the properties of
polymeric/inorganic composite are greatly influenced by the size of the inorganic phase.
The improved properties include enhanced toughness, stiffness, decreased gas permeability, increased transparency, scratch, abrasion, solvent and heat resistance.
Poly (vinyl alcohol) is a semicrystalline polymer possessing excellent water-soluble, biodegradable, biocompatible, gas barrier and high mechanical properties.
This indicates that the cooling rate is the main factor to affect Xc when cooling rate is low.
This indicates that SiO2 content is also a main factor affecting Xc.
The improved properties include enhanced toughness, stiffness, decreased gas permeability, increased transparency, scratch, abrasion, solvent and heat resistance.
Poly (vinyl alcohol) is a semicrystalline polymer possessing excellent water-soluble, biodegradable, biocompatible, gas barrier and high mechanical properties.
This indicates that the cooling rate is the main factor to affect Xc when cooling rate is low.
This indicates that SiO2 content is also a main factor affecting Xc.
Online since: November 2011
Authors: C. Sharma, S. Maheshwari, Anil Kumar
AEDM is affected by several factors including the material properties.
Cryogenically treatment to the electrode material in AEDM is a new advancement to cause beneficial changes in the material properties.
The advantages of cryogenic treatment include relieved residual stresses, refinement of grain sizes and better electrical and thermal properties [10].
Improved performance of cryogenically treated copper electrode is attributed to significant improvement in their thermal and electrical properties.
Dey: Journal of Mechanical Engineering Vol.57 (2006), p. 271 [10] N.S.
Cryogenically treatment to the electrode material in AEDM is a new advancement to cause beneficial changes in the material properties.
The advantages of cryogenic treatment include relieved residual stresses, refinement of grain sizes and better electrical and thermal properties [10].
Improved performance of cryogenically treated copper electrode is attributed to significant improvement in their thermal and electrical properties.
Dey: Journal of Mechanical Engineering Vol.57 (2006), p. 271 [10] N.S.
Online since: June 2014
Authors: Tao Feng, Zhen Zhen Jia
Influencing Factors on Coal gangue Hills Explosion
The explosion of the coal gangue hill is caused by various factors, including the internal factors and the external factors [3,4].
The internal factors mainly contains: the degree and area of spontaneous combustion of the coal gangue hill; the content of residual coal in the coal gangue, the metamorphic degree of the coal gangue, and the coal macerals; the aggregation states and types of sulfide in the coal gangue; the porosity of the coal gangue hill; mechanical properties, fragmentation and weathering of the coal gangue.
Conclusions The explosion of spontaneous combustion of the coal gangue hill is caused by various factors, including the internal factors and the external factors (such as environment and climate conditions).
Zhang, Blasting law and inducing factors of self-combustion waste heap, J.
Li, Analysis of gangue hill spontaneous combustion and its affecting factors, J.
The internal factors mainly contains: the degree and area of spontaneous combustion of the coal gangue hill; the content of residual coal in the coal gangue, the metamorphic degree of the coal gangue, and the coal macerals; the aggregation states and types of sulfide in the coal gangue; the porosity of the coal gangue hill; mechanical properties, fragmentation and weathering of the coal gangue.
Conclusions The explosion of spontaneous combustion of the coal gangue hill is caused by various factors, including the internal factors and the external factors (such as environment and climate conditions).
Zhang, Blasting law and inducing factors of self-combustion waste heap, J.
Li, Analysis of gangue hill spontaneous combustion and its affecting factors, J.
Online since: November 2007
Authors: Ana Lilia Leal-Cruz, Martin I. Pech-Canul
Introduction
Silicon nitride is an advanced ceramic material with attractive mechanical, thermal, chemical,
electrical and optical properties [1,2].
On the other hand, nucleation and growth of phases obtained by CVD are determined by two major factors: the concentration (supersaturation) of adsorbed monomers or atoms on the surface, and the temperature which relates to their mobility.
The type of nitrogen precursor affects not only the morphology but also the amount of the products.
The type of nitrogen precursor affects both dissociation of the solid precursor (Na2SiF6) and formation of Si3N4.
Rainforth: Ceramic Microstructures, Property Control by Processing (Chapman & Hall, USA 1994)
On the other hand, nucleation and growth of phases obtained by CVD are determined by two major factors: the concentration (supersaturation) of adsorbed monomers or atoms on the surface, and the temperature which relates to their mobility.
The type of nitrogen precursor affects not only the morphology but also the amount of the products.
The type of nitrogen precursor affects both dissociation of the solid precursor (Na2SiF6) and formation of Si3N4.
Rainforth: Ceramic Microstructures, Property Control by Processing (Chapman & Hall, USA 1994)
Online since: September 2020
Authors: Jian Guang Xie, Ming Xi Liu, Zhan Qi Wang, Yan Ping Liu
The peak sound absorption coefficient was used as the system characteristic behavior sequence, and the percentage of voids in different equivalent diameter range was used as the system related factor behavior sequence.
Research on Skid Resistance and Noise Reduction Properties of Cement Concrete Pavements with Different Surface Textures, Journal of Highway and Transportation Research and Development, 2013, 7(2): 22-27
Optimized Acoustic Properties of Cellular Solids, Journal of the Acoustical Society of America, 1999, 106(2): 756-765
Analysis of Factors Affecting Water Stability of Asphalt Stabilized Macadam Based on Grey Entropy Method, Journal of Chongqing Jiaotong University (Natural Science),2008, 27(06): 1077-1080
Study on Mechanical Properties and Micropore Structure of FRCC Based on Grey Entropy Method, Concrete, 2019(06): 13-17
Research on Skid Resistance and Noise Reduction Properties of Cement Concrete Pavements with Different Surface Textures, Journal of Highway and Transportation Research and Development, 2013, 7(2): 22-27
Optimized Acoustic Properties of Cellular Solids, Journal of the Acoustical Society of America, 1999, 106(2): 756-765
Analysis of Factors Affecting Water Stability of Asphalt Stabilized Macadam Based on Grey Entropy Method, Journal of Chongqing Jiaotong University (Natural Science),2008, 27(06): 1077-1080
Study on Mechanical Properties and Micropore Structure of FRCC Based on Grey Entropy Method, Concrete, 2019(06): 13-17
Online since: September 2013
Authors: Zhan Yuan Zhu, Fei Luo, Cong Cai, Ling Zhi Cui
Introduction
The presence of solid ice crystals in permafrost soil is greatly different from thawed soil in term of deformation properties.
The factors affect dynamic strain amplitude of frozen soil.
Among factors, temperature is key factors affecting the ice content.
From Figure 4, when temperature is less than-4℃ and is falling, the curves coincide approximately and dynamic strain amplitude have no change as temperature changes, which indicated that the deformation properties of permafrost gradually stable.
Loads are major factors about causing soil deformation and the deformation development, and dynamic strain amplitude varies with dynamic load size changing.
The factors affect dynamic strain amplitude of frozen soil.
Among factors, temperature is key factors affecting the ice content.
From Figure 4, when temperature is less than-4℃ and is falling, the curves coincide approximately and dynamic strain amplitude have no change as temperature changes, which indicated that the deformation properties of permafrost gradually stable.
Loads are major factors about causing soil deformation and the deformation development, and dynamic strain amplitude varies with dynamic load size changing.
Online since: June 2013
Authors: Sergejs Gluhihs, Andris Chate, Andrejs Kovalovs
., the possibility of measuring the elastic modulus as a function of the processes proceeding in a specimen and affecting the structure of a polymeric material (aging, sorption, and desorption of liquid media and vapors by the material, temperature variations, etc.).
The initial information for development of the plan is the number of factors n and the number of experiments k.
The points of experiments in the domain of factors are distributed as regularly as possible (Fig. 2).
The elastic properties of the material were modeled by Hooke’s relations.
The method allows one to use the "principle of a unified specimen", i.e., the possibility of measuring the elastic modulus as a function of various processes affecting the structure and properties of a polymeric material (aging, action of temperature and moisture, etc.).
The initial information for development of the plan is the number of factors n and the number of experiments k.
The points of experiments in the domain of factors are distributed as regularly as possible (Fig. 2).
The elastic properties of the material were modeled by Hooke’s relations.
The method allows one to use the "principle of a unified specimen", i.e., the possibility of measuring the elastic modulus as a function of various processes affecting the structure and properties of a polymeric material (aging, action of temperature and moisture, etc.).
Online since: July 2011
Authors: Chang Jiang Song, Liang Zhu, Ke Feng Li, Qi Jie Zhai, Yuan Yi Guo, Feng Mei Sun
Introduction
Ferritic stainless steels possess good corrosion resistance and properties at high temperature.
For the ferritic stainless steels, alloying elements Nb and Ti can be added to improve the mechanical properties through solution strengthing and precipitation strengthing, and also to eliminate the sensitization (i.e. susceptibility to intergranular corrosion)[3-4].
This phenomenon results in a coarsened grain zone which can not be refined because of the untransformable microstructure, which cause high temperature embrittlement and deterioration of mechanical properties[3,7].
To solve this problem and improve the mechanical properties of welding HAZ, it is important to have an insight into the grain growth behaviour at high temperature.
Moreover, alloying element Ti should be another factor which leads to higher grain initial rapid growth temperature.
For the ferritic stainless steels, alloying elements Nb and Ti can be added to improve the mechanical properties through solution strengthing and precipitation strengthing, and also to eliminate the sensitization (i.e. susceptibility to intergranular corrosion)[3-4].
This phenomenon results in a coarsened grain zone which can not be refined because of the untransformable microstructure, which cause high temperature embrittlement and deterioration of mechanical properties[3,7].
To solve this problem and improve the mechanical properties of welding HAZ, it is important to have an insight into the grain growth behaviour at high temperature.
Moreover, alloying element Ti should be another factor which leads to higher grain initial rapid growth temperature.