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Online since: November 2013
Authors: Tomas Trčka, Pavel Koktavý, Robert Macků, Vladimir Holcman
Our efforts are directed to the noise properties assessment.
In addition the noise analysis is affected by the internal polarization phenomena and the material residual humidity.
This issue in connection with the sample geometrical properties and the dielectric noise measurement methodology take part in this paper.
The physical properties are defined on the basis of the fluctuation-deviation theorem and the Johnson-Nyquist (thermal) noise is produced.
Technically, the high input resistance and the sample capacitance along with the capacitance of the cables and feed thought connectors (CS’) ale limiting factors for the dielectric noise measurement.
In addition the noise analysis is affected by the internal polarization phenomena and the material residual humidity.
This issue in connection with the sample geometrical properties and the dielectric noise measurement methodology take part in this paper.
The physical properties are defined on the basis of the fluctuation-deviation theorem and the Johnson-Nyquist (thermal) noise is produced.
Technically, the high input resistance and the sample capacitance along with the capacitance of the cables and feed thought connectors (CS’) ale limiting factors for the dielectric noise measurement.
Online since: September 2013
Authors: Nihat Tosun, Ihsan Dagtekin, Latif Ozler, Ahmet Deniz
It has been found that the surface roughness obtained by cutting material with high mechanical properties is better than that of obtained by cutting material with inferior mechanical properties.
There are some internal and external factors that affect cutting quality.
In addition, the effect of mechanical properties of the material on surface roughness will be investigated.
The mechanical properties 6061 and 7075 aluminum alloys are presented in Table 1.
This means that AA7075-T6 material has higher mechanical properties compared to AA6061-T6.
There are some internal and external factors that affect cutting quality.
In addition, the effect of mechanical properties of the material on surface roughness will be investigated.
The mechanical properties 6061 and 7075 aluminum alloys are presented in Table 1.
This means that AA7075-T6 material has higher mechanical properties compared to AA6061-T6.
Online since: November 2014
Authors: Jie Guang Song, Rong Jin Liu, Xiu Qin Wang, Shi Bin Li, Fang Wang, Da Ming Du, Min Han Xu, Gang Chang Ji
For most of these applications, the porous materials need to fulfill specific requirements regarding their microstructure, porosity, permeability and mechanical properties [6].
To tailor the properties for each application it is necessary to control the factors affecting the sintering process such as the initial particle characteristics, the microstructure, the additives and the processing technique.
In this paper, the effect of maintenance technology on the properties of quartz sand unfired porous materials was investigated.
The properties of the unfired porous quartz bricks were tested.
The effect of chemical admixtures and mineral additives on the properties of self-compacting mortars.
To tailor the properties for each application it is necessary to control the factors affecting the sintering process such as the initial particle characteristics, the microstructure, the additives and the processing technique.
In this paper, the effect of maintenance technology on the properties of quartz sand unfired porous materials was investigated.
The properties of the unfired porous quartz bricks were tested.
The effect of chemical admixtures and mineral additives on the properties of self-compacting mortars.
Online since: December 2013
Authors: Ku Zilati Ku Shaari, Suriati Sufian, Zakaria Man, Yon Norasyikin Samsudin
The biopolymer compatibility with the urea phase is an important factor in the coating process since the adhesion properties at the interface will determine the final mechanical properties of the controlled release fertiliser.
Good mechanical properties such as modulus and impact strength are required to minimise attrition during the coating process and the final product must remain intact during storage and transportation.
One of the factors that affect the coating uniformity is the temperature inside the bed.
Therefore, an optimum temperature is very crucial because it will affect the wettabilty properties between the coating material and urea particle.
“Starch-isocyanate properties,” BioResources 6(1), 81-102
Good mechanical properties such as modulus and impact strength are required to minimise attrition during the coating process and the final product must remain intact during storage and transportation.
One of the factors that affect the coating uniformity is the temperature inside the bed.
Therefore, an optimum temperature is very crucial because it will affect the wettabilty properties between the coating material and urea particle.
“Starch-isocyanate properties,” BioResources 6(1), 81-102
Online since: May 2014
Authors: Hui Ling Liu, Jun Zhang, Xing Wang Wen, Di Wu
The glass-ceramics with Ak = 0.36 possessed the best physical and chemical properties.
In addition, the formed novel materials possessing attractive mechanical and chemical properties can be utilized extensively in the building industry[7].
Effect of Alkalinity on the Sewage Sludge Glass-ceramics Properties Various properties of the glass-ceramics with different alkalinity were summarized in Table 4.
It was the most crystalline phases conduced S2 to possess the best physical properties.
The produced glass-ceramics possessed excellent properties, which were more related to the amount and type of generated crystalline phases.
In addition, the formed novel materials possessing attractive mechanical and chemical properties can be utilized extensively in the building industry[7].
Effect of Alkalinity on the Sewage Sludge Glass-ceramics Properties Various properties of the glass-ceramics with different alkalinity were summarized in Table 4.
It was the most crystalline phases conduced S2 to possess the best physical properties.
The produced glass-ceramics possessed excellent properties, which were more related to the amount and type of generated crystalline phases.
Online since: March 2024
Authors: Filip Khestl, Bohdan Sousedik, Vlastimil Bilek, Lucie Malíková, Lukáš Prochazka
The mechanical properties and frost resistance of these mixtures were discussed concerning the results obtained for concrete without aggregate substitution.
Deterioration due to freeze-thawing cycles (F&T cycles) is a severe problem affecting concrete structures' durability.
This indicates that LWA affects the mechanical properties negatively and no positive effects of self-curing were observed in terms of strengths and dynamic modulus of elasticity.
This contradicts the conventional understanding of water's role in developing mechanical properties.
Subsequent experiments in our ongoing research revealed that achieving a positive effect on mechanical properties from soaked LWA required a water-to-cement ratio of 0.20.
Deterioration due to freeze-thawing cycles (F&T cycles) is a severe problem affecting concrete structures' durability.
This indicates that LWA affects the mechanical properties negatively and no positive effects of self-curing were observed in terms of strengths and dynamic modulus of elasticity.
This contradicts the conventional understanding of water's role in developing mechanical properties.
Subsequent experiments in our ongoing research revealed that achieving a positive effect on mechanical properties from soaked LWA required a water-to-cement ratio of 0.20.
Online since: July 2007
Authors: Uwe Vogt, Marion Merklein
The mechanical properties after the short-term heat treatment are not stable.
The applicability of different heating technologies depends on technological and economic factors.
Mechanical properties before forming.
Mechanical properties after artificial aging.
Besides the mechanical properties of the shortterm heat treated zones of a THTB in state W, the mechanical properties in state T6, i.e. after artificial aging have to be studied.
The applicability of different heating technologies depends on technological and economic factors.
Mechanical properties before forming.
Mechanical properties after artificial aging.
Besides the mechanical properties of the shortterm heat treated zones of a THTB in state W, the mechanical properties in state T6, i.e. after artificial aging have to be studied.
Online since: December 2018
Authors: Zhao Xia Qu, Xiao Jie Wang, Li Qian Xia
The requirement of chemical compositions and physical properties of 9Ni steel is shown in Table 1 and Table 2.
Fig. 6 The result of maximum hardness test Matched Welding Consumables of 9Ni Steel To selecting matched welding consumables for general commercial steels, several factors should be considered as follows. 1) Excellent weldability. 2) Chemical compositions similar to that of base metal to avoid the various problems caused by dissimilar metal welding; 3) Mechanical properties equal to that of base metal; 4) Same level of Special properties of base metal (such as wear resistance and corrosion resistance).
Compared with CVN test, CTOD test has the following advantages: 1) CTOD can evaluate the toughness of welded joints more precisely; 2) CTOD results can directly demonstrate the toughness at the crack tip; 3) CTOD can reveal how the factors such as the residual stress, the geometry of weld joints, and etc, influence the toughness.
References [1] LI Jianmin, WANG Peizhan, LIU Dongfeng, Investigation on Microstructure and Mechanical Properties of 9Ni Steel for LNG Storage Tank during Service, Journal of Taiyuan University of Technology
[2] YANG Yue-hui, CAI Qing-wu, WU Hui-bin, Effect of quenching, lamellarizing and tempering process on properties of 9Ni steel, TRANSACTIONS OF MATERIALS AND HEAT TREATMENT. 30(3:2009)92-95
Fig. 6 The result of maximum hardness test Matched Welding Consumables of 9Ni Steel To selecting matched welding consumables for general commercial steels, several factors should be considered as follows. 1) Excellent weldability. 2) Chemical compositions similar to that of base metal to avoid the various problems caused by dissimilar metal welding; 3) Mechanical properties equal to that of base metal; 4) Same level of Special properties of base metal (such as wear resistance and corrosion resistance).
Compared with CVN test, CTOD test has the following advantages: 1) CTOD can evaluate the toughness of welded joints more precisely; 2) CTOD results can directly demonstrate the toughness at the crack tip; 3) CTOD can reveal how the factors such as the residual stress, the geometry of weld joints, and etc, influence the toughness.
References [1] LI Jianmin, WANG Peizhan, LIU Dongfeng, Investigation on Microstructure and Mechanical Properties of 9Ni Steel for LNG Storage Tank during Service, Journal of Taiyuan University of Technology
[2] YANG Yue-hui, CAI Qing-wu, WU Hui-bin, Effect of quenching, lamellarizing and tempering process on properties of 9Ni steel, TRANSACTIONS OF MATERIALS AND HEAT TREATMENT. 30(3:2009)92-95
Online since: October 2025
Authors: Rittichai Phaoniam, Somchai Wonthaisong, Narin Intawong
Hardness profiles were measured across the weld metal, heat-affected zone (HAZ), and base metal.
This form of cracking typically occurs in the heat-affected zone (HAZ) of weldments as a result of an interaction among three key factors: namely, diffusible hydrogen, tensile residual stresses, and a susceptible microstructure [1-2].
Factors such as elevated hardness values and high residual stress concentrations in the CGHAZ are known to promote crack initiation and propagation.
It indicated that a clear correlation between these two properties, indicating that changes in grain size have a direct influence on the hardness of the weld.
Effect of cooling rate on microstructure and mechanical properties in the CGHAZ of electroslag welded pearlitic rail steel.
This form of cracking typically occurs in the heat-affected zone (HAZ) of weldments as a result of an interaction among three key factors: namely, diffusible hydrogen, tensile residual stresses, and a susceptible microstructure [1-2].
Factors such as elevated hardness values and high residual stress concentrations in the CGHAZ are known to promote crack initiation and propagation.
It indicated that a clear correlation between these two properties, indicating that changes in grain size have a direct influence on the hardness of the weld.
Effect of cooling rate on microstructure and mechanical properties in the CGHAZ of electroslag welded pearlitic rail steel.
Online since: June 2009
Authors: Hong Tsu Young, Kuen Ren Chen
Chemical mechanical polishing (CMP) is a semiconductor process that is used to achieve
global planarization.
The diamond pitch is relative to the number of diamonds and the scale of the total scratch time, but does not affect the profile of the scratch time.
There are still many researches considering the effect of pad properties, like pad roughness, and other polishing conditions on the polishing removal rate.
The geometry of a disk-type dresser can be separated into three aspects, while other factors will not affect the scratch trajectory.
In addition, the distribution area of diamond is relative to the number of diamonds and then will affect the scale of scratch times.
The diamond pitch is relative to the number of diamonds and the scale of the total scratch time, but does not affect the profile of the scratch time.
There are still many researches considering the effect of pad properties, like pad roughness, and other polishing conditions on the polishing removal rate.
The geometry of a disk-type dresser can be separated into three aspects, while other factors will not affect the scratch trajectory.
In addition, the distribution area of diamond is relative to the number of diamonds and then will affect the scale of scratch times.