Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: July 2021
Authors: Nurdin Ali, Husaini Husaini, Mulyati Sri, Zulfri Muhammad
Corrosion is the destruction or damage to property due to reacting to its environment [1], one of which is atmospheric corrosion.
Corrosion is the main factor causing premature failure of much of the equipment and infrastructure to be in corrosive operating environments [2],[3] [4].
Exposure testing only considers the weight loss variable, assuming that all atmospheric corrosion factors are represented in the form of mass loss.
The high rainfall that occurred at the study site, as well as humidity, greatly affects the level of corrosion that occurs in 5 (five) types of steel construction, as shown in Fig 9 above.
Ariffin, “Atmospheric Corrosion of Structural Steels Exposed in The 2004 Tsunami-Affected Areas of Aceh,” Int.
Corrosion is the main factor causing premature failure of much of the equipment and infrastructure to be in corrosive operating environments [2],[3] [4].
Exposure testing only considers the weight loss variable, assuming that all atmospheric corrosion factors are represented in the form of mass loss.
The high rainfall that occurred at the study site, as well as humidity, greatly affects the level of corrosion that occurs in 5 (five) types of steel construction, as shown in Fig 9 above.
Ariffin, “Atmospheric Corrosion of Structural Steels Exposed in The 2004 Tsunami-Affected Areas of Aceh,” Int.
Online since: July 2017
Authors: Yan De Liang, Fu Ben He, Roberto Bortoletto, Enrico Pagello
Although to apply a bio-inspired actuator can enhance the capabilities of robot in locomotion, the mechanical structure and control system still seem to be complex to develop.
A virtual model of the human musculoskeletal system that represents the kinematics of joints [7], the geometry of bones, the three-dimensional organization and force-generating properties of lower limb muscles [8,9] are modeled.
Since joint elasticity does not affect the kinematic measures and the segmented links are rigid, the kinematics of robot model can be described by Denavit-Hartenberg (DH) parameters, as illustrated in Fig. 6.
Zajac, Muscle and Tendon Properties Models Scaling and Application to Biomechanics and Motor Control, Critical Reviews in Biomedical Engineering, 17 (1989) 359-410
Hollander Comparison of Mechanical Design and Energy Consumption of Adaptable, Passive-compliant Actuators, The Int.
A virtual model of the human musculoskeletal system that represents the kinematics of joints [7], the geometry of bones, the three-dimensional organization and force-generating properties of lower limb muscles [8,9] are modeled.
Since joint elasticity does not affect the kinematic measures and the segmented links are rigid, the kinematics of robot model can be described by Denavit-Hartenberg (DH) parameters, as illustrated in Fig. 6.
Zajac, Muscle and Tendon Properties Models Scaling and Application to Biomechanics and Motor Control, Critical Reviews in Biomedical Engineering, 17 (1989) 359-410
Hollander Comparison of Mechanical Design and Energy Consumption of Adaptable, Passive-compliant Actuators, The Int.
Online since: May 2017
Authors: Margarita Isaenkova, Evgeny Grigoriev, Artem Lunev, Artem Zazolin, Denis Pchelyakov, Yuri Perlovich, Olga Krymskaya
The main reason for lower densities of the compacts in our experiment
is the absence of the binder, which strongly affects the pressing procedure [19].
Hopefully, this does not affect the peak of the distribution.
Corresponding relative changes in volume (and density) are of the same order.The expression obtained for the deformation rate ˙ε by Coble [23] is very similar to Eq. 1 except for a numeric factor and a slightly different dependence on the crystallite size d.
Nien-Nan, The conversion of UO2 via ammonium uranyl carbonate: Study of precipitation, chemical variation and powder properties, Journal of Nuclear Materials 99, 2 (1981) 135-147
Siegele, Cleavage fracture assessment of transient thermo-mechanical loading situations by local approach, Engineering Fracture Mechanics (2017) http://dx.doi.org/10.1016/j.engfracmech.2017.02.012 [23] R.
Hopefully, this does not affect the peak of the distribution.
Corresponding relative changes in volume (and density) are of the same order.The expression obtained for the deformation rate ˙ε by Coble [23] is very similar to Eq. 1 except for a numeric factor and a slightly different dependence on the crystallite size d.
Nien-Nan, The conversion of UO2 via ammonium uranyl carbonate: Study of precipitation, chemical variation and powder properties, Journal of Nuclear Materials 99, 2 (1981) 135-147
Siegele, Cleavage fracture assessment of transient thermo-mechanical loading situations by local approach, Engineering Fracture Mechanics (2017) http://dx.doi.org/10.1016/j.engfracmech.2017.02.012 [23] R.
Online since: September 2021
Authors: Roman Dychkovskyi, Edgar Caseres Cabana, Vasyl Lozynskyi, Volodymyr Falshtynskyi, Leonid Hrytsenko, Pavlo Saik
Following conditions were met while carrying out the research:
– in terms of their physical properties, natural materials meet the natural conditions;
– geometrical parameters of the gasification site are reproduced in the model with the provided principles of static similarity;
– lithological structure of the rock coal thickness considers its changes within the deposit area;
– hierarchical dependence of the mining and geological factors forming the stress train state of rock mass;
– CRMG versatility is provided by the balanced behavior of chemical reactions and physical velocities of the gasification processes.
As for the temperature mode, a chemical reaction is much more sensitive to the temperature changes than to other physical factors.
The Change of Structural and Thermal Properties of Rocks Exposed to High Temperatures in the Vicinity of Designed Geo-Reactor.
IEEE 8th International Conference Nanomaterials: Application & Properties (NAP), 8915065 https://doi.org/10.1109/nap.2018.8915065 [34] Koveria, A., Kieush, L., Hrubyak, A., & Kotsyubynsky, V. (2019).
Properties of Donetsk basin hard coals and the products of their heat treatment revealed via Mossbauer spectroscopy, Petroleum and Coal, 61(1), 160-168 [35] Kieush, L. (2019).
As for the temperature mode, a chemical reaction is much more sensitive to the temperature changes than to other physical factors.
The Change of Structural and Thermal Properties of Rocks Exposed to High Temperatures in the Vicinity of Designed Geo-Reactor.
IEEE 8th International Conference Nanomaterials: Application & Properties (NAP), 8915065 https://doi.org/10.1109/nap.2018.8915065 [34] Koveria, A., Kieush, L., Hrubyak, A., & Kotsyubynsky, V. (2019).
Properties of Donetsk basin hard coals and the products of their heat treatment revealed via Mossbauer spectroscopy, Petroleum and Coal, 61(1), 160-168 [35] Kieush, L. (2019).
Online since: March 2018
Authors: Felix Omoruwuo, Akindele Okewale
Deleterious effect on material integrity and mechanical properties resulting from failure caused by corrosion process is severe in some cases.
The corrosion of a metal or a material is a global scientific problem as it affects different walks of life especially in metallurgical, chemical, materials and oil industries.
Corrosion is defined as the degradation of materials or its properties due to a reaction with the environment.
The adsorption process is affected by the chemical structures, allocation of charge in molecule, the nature and apparent charge of metal, and the type of aggressive media [25].
[34] Fuchs Godec, R., and Zerjav, G., (2009), Inhibition properties of Triton – X – 100 on Ferritic Stainless steel in Sulphuric Acid at Increasing Temperature, Acta chimica Slovenica, 56(1): 78 – 85
The corrosion of a metal or a material is a global scientific problem as it affects different walks of life especially in metallurgical, chemical, materials and oil industries.
Corrosion is defined as the degradation of materials or its properties due to a reaction with the environment.
The adsorption process is affected by the chemical structures, allocation of charge in molecule, the nature and apparent charge of metal, and the type of aggressive media [25].
[34] Fuchs Godec, R., and Zerjav, G., (2009), Inhibition properties of Triton – X – 100 on Ferritic Stainless steel in Sulphuric Acid at Increasing Temperature, Acta chimica Slovenica, 56(1): 78 – 85
Online since: July 2020
Authors: B. Gunnar Malm, Carl Mikael Zetterling, Mattias Ekström
Transistors with large aspect ratios (100/2) and relatively
long pulses with rise and fall times (>1 µs) were used to reduce the influence of the geometric factor
[8, 3, 5].
Eq. 4 reduces to Eq. 5 for the highlow case,Fig. 3: Simulated quantum mechanical system.
Most material properties are software default values the potential barrier was set to ∼2.7 eV, by setting the electron affinity of SiO2 to 0.95 eV and 4HSiC to 3.65 eV, based on the result of Afanas'ev et al. [19]. a) Potential well and the first four eigenenergies.
The rough charge pumping estimates gave median results that were in good agreement with the fine frequency measurements, which indicates that the highlow approach may be suitable for automatic extraction of MOS interface properties.
Charge pumping is a suitable method for automatic extraction of defect densities, and ultrafast pulsedTable 3: Properties measured from transistors (100 µm width, 2 µm length), estimated at 200 ◦C.
Eq. 4 reduces to Eq. 5 for the highlow case,Fig. 3: Simulated quantum mechanical system.
Most material properties are software default values the potential barrier was set to ∼2.7 eV, by setting the electron affinity of SiO2 to 0.95 eV and 4HSiC to 3.65 eV, based on the result of Afanas'ev et al. [19]. a) Potential well and the first four eigenenergies.
The rough charge pumping estimates gave median results that were in good agreement with the fine frequency measurements, which indicates that the highlow approach may be suitable for automatic extraction of MOS interface properties.
Charge pumping is a suitable method for automatic extraction of defect densities, and ultrafast pulsedTable 3: Properties measured from transistors (100 µm width, 2 µm length), estimated at 200 ◦C.
Online since: October 2004
Authors: I.C. Howard, Eric J. Palmiere, S. Das
Howard
3,c
1
Automation Division, Tata Steel, Jamshedpur, INDIA-831 001
2
Institute for Microstructural and Mechanical Processing: The University of Sheffield (IMMPETUS)
Department of Engineering Materials, Mappin Street, Sheffield, S1 3JD, UK
3
IMMPETUS, Department of Mechanical Engineering, Mappin Street, Sheffield, S1 3JD, UK
a
sumitesh.das@tatasteel.com, be.j.palmiere@sheffield.ac.uk, ci.howard@sheffield.ac.uk
Keywords: Cellular automata modeling, FE modeling, length scales, hot rolling.
Differentiating the above equation with respect to strain gives i CA i CA d l M d ε ρ b = + (2) where +i CAdρ is the increase in dislocation density as a result of a change in strain ( i CAdε ) at a CA cell, M is the Taylor factor (=3.1 for f.c.c. metals) and i is the property of the CA cell expressed in terms of microstructural features such as grain interiors, grain boundaries, carbide particles etc.
The simulation is not affected as the macro variables in each FE drive the CA associated with it and act independently of the neighbouring CA arrays.
Differentiating the above equation with respect to strain gives i CA i CA d l M d ε ρ b = + (2) where +i CAdρ is the increase in dislocation density as a result of a change in strain ( i CAdε ) at a CA cell, M is the Taylor factor (=3.1 for f.c.c. metals) and i is the property of the CA cell expressed in terms of microstructural features such as grain interiors, grain boundaries, carbide particles etc.
The simulation is not affected as the macro variables in each FE drive the CA associated with it and act independently of the neighbouring CA arrays.
Online since: December 2022
Authors: Ojo Sunday Isaac Fayomi, Biola Mathew Biodun, O. Joshua Okeniyi
The size of an oxide's particles is very important to the structure, size, and other properties of a substance.
Temperature, pH, and time are just a few examples of process factors that can and should be adjusted [38].
Ashori, ‘Wood plastic composites from agro-waste materials: Analysis of mechanical properties’, Bioresource technology, vol. 101, no. 7, pp. 2525–2528, 2010.
“Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Conditions in Three Continents.”
Influence of inherent silicon and metals in rice husk on the char properties and associated silica structure.
Temperature, pH, and time are just a few examples of process factors that can and should be adjusted [38].
Ashori, ‘Wood plastic composites from agro-waste materials: Analysis of mechanical properties’, Bioresource technology, vol. 101, no. 7, pp. 2525–2528, 2010.
“Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Conditions in Three Continents.”
Influence of inherent silicon and metals in rice husk on the char properties and associated silica structure.
Online since: September 2014
Authors: Viacheslav Tarelnyk, Vasyl Martsynkovskyy
It should be noted that in case of SPD of hardened by EEA layers, such characteristic of their physical and mechanical properties is more physically substantiated and convenient, as it defines actually the layer hardenability in the process of SPD method, and therefore the change of operational properties of this layer.
Influence of the Main Technological SPD Parameters on Microgeometry, Structure and Properties of EEA Layers The mentioned above determination of SPD force and deformation parameters of the EEA layers of different hardness allowed to generalize the research results of the surface layer microgeometry, its structure and properties.
Obviously, SPD hardening affects here.
With ball burnishing specific force increase, the mechanical hardening of the surface layer takes place, which becomes a significant factor with increase of the layer depth.
Consequently according to the results of experimental researches of the main technological parameters of SPD method influence on microgeometry, structure and properties of EEA layers, the following conclusion should be made: 1.
Influence of the Main Technological SPD Parameters on Microgeometry, Structure and Properties of EEA Layers The mentioned above determination of SPD force and deformation parameters of the EEA layers of different hardness allowed to generalize the research results of the surface layer microgeometry, its structure and properties.
Obviously, SPD hardening affects here.
With ball burnishing specific force increase, the mechanical hardening of the surface layer takes place, which becomes a significant factor with increase of the layer depth.
Consequently according to the results of experimental researches of the main technological parameters of SPD method influence on microgeometry, structure and properties of EEA layers, the following conclusion should be made: 1.
Online since: September 2013
Authors: C. Gupta, R.N. Singh, J.K. Chakravartty
Within the DSA temperature a sharp decline in the fracture properties was observed.
The present investigation that characterizes the tensile and fracture properties of two alloy variants of the steel would provide valuable information for design of microstructure specifically catering to resistance to brittle fracture and also to generate a database of material properties which would be an input to fail safe analysis.
The ductility properties passed through a minimum in the temperature range where serrated flow was observed.
On increasing the pull rates by a factor of 10, such perturbations in the load and DCPD signal was not observed.
As a result, the embrittling manifestations of DSA on the mechanical properties of AISI 403 steel are significantly increased.
The present investigation that characterizes the tensile and fracture properties of two alloy variants of the steel would provide valuable information for design of microstructure specifically catering to resistance to brittle fracture and also to generate a database of material properties which would be an input to fail safe analysis.
The ductility properties passed through a minimum in the temperature range where serrated flow was observed.
On increasing the pull rates by a factor of 10, such perturbations in the load and DCPD signal was not observed.
As a result, the embrittling manifestations of DSA on the mechanical properties of AISI 403 steel are significantly increased.