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Online since: March 2025
Authors: Ivna Kavre Piltaver, Robert Peter, Kresimir Salamon, Nenad Lazarević, Jasmina Lazarević, Maja Mičetić, Mladen Petravić
The incorporation of hydrogen into WO3 can strongly influence the material's electrical, optical, and structural properties.
Elevated temperatures can induce phase transitions in WO₃, potentially altering its crystalline structure and electronic properties.
Furthermore, higher temperatures might enhance thermal vibrations within the lattice, affecting the interaction dynamics between hydrogen ions and the WO₃ matrix.
Kand, Optical and electrical properties of thin films of WO3 electrochemically coloured, Electrochim.
Granqvist, Electronic structure and optical properties of WO3, LiWO3, NaWO3, and HWO3.
Elevated temperatures can induce phase transitions in WO₃, potentially altering its crystalline structure and electronic properties.
Furthermore, higher temperatures might enhance thermal vibrations within the lattice, affecting the interaction dynamics between hydrogen ions and the WO₃ matrix.
Kand, Optical and electrical properties of thin films of WO3 electrochemically coloured, Electrochim.
Granqvist, Electronic structure and optical properties of WO3, LiWO3, NaWO3, and HWO3.
Online since: December 2013
Authors: Wen Li Liu, Jing Gui Wu, Xin Yu Zhao
Soil aggregates have certain mechanical resilience, water stability and biological stability.
The quantity and stability of soil aggregates was affected by environmental change and production activities[2,3].
Soil erodibility was determined by the joint action of various soil properties[5], in which soil structure was considered to be the most important and direct property [6].
Orchard soils have the same properties with the soils of food crops.
Table 1 Composition of aggregates in orchard soils (dry-sieving method) The formation and change process of the aggregates is the consequence of various complex factors.
The quantity and stability of soil aggregates was affected by environmental change and production activities[2,3].
Soil erodibility was determined by the joint action of various soil properties[5], in which soil structure was considered to be the most important and direct property [6].
Orchard soils have the same properties with the soils of food crops.
Table 1 Composition of aggregates in orchard soils (dry-sieving method) The formation and change process of the aggregates is the consequence of various complex factors.
Online since: October 2011
Authors: Hsiang Chen Hsu, Cai Wan Changjian, Jiann Lin Chen, Guan I Wu
The roughness effect is also a significant factor in determining bearing performances, but before studies does not take it into consideration for related PSFD theoretical and experimental researches.
All the above researches concerned the bearing performance or properties much more, but bearings should be actually fixed on turbo machineries or other real apparatuses.
Neither the longitudinal and transverse nor the values of roughness parameters would not affect strongly nonlinear rotor-bearing system very much even though for higher permeability, and the result may caused by the strongly nonlinear effect inclusive of the strongly nonlinear oil film force and nonlinear Duffing equations controlling nonlinear dynamics of the whole system.
Institution of Mechanical Engineers, (1957), p.151
Christensen: Stochastic models for hydrodynamic lubrication of rough surfaces, Proceedings Institution of Mechanical Engineering (Part-I), Vol. 184 (1969), p.1013
All the above researches concerned the bearing performance or properties much more, but bearings should be actually fixed on turbo machineries or other real apparatuses.
Neither the longitudinal and transverse nor the values of roughness parameters would not affect strongly nonlinear rotor-bearing system very much even though for higher permeability, and the result may caused by the strongly nonlinear effect inclusive of the strongly nonlinear oil film force and nonlinear Duffing equations controlling nonlinear dynamics of the whole system.
Institution of Mechanical Engineers, (1957), p.151
Christensen: Stochastic models for hydrodynamic lubrication of rough surfaces, Proceedings Institution of Mechanical Engineering (Part-I), Vol. 184 (1969), p.1013
Online since: November 2015
Authors: Florian Hugger, Stephan Roth, Vincent Mann, Fabian Gärtner, Konstantin Hofmann, Felix Tenner
Additionally, electrical and mechanical properties of the welded joints are determined.
Results and Discussion Especially the weld seam geometry, e.g. the shape of the weld seams is of interest with regard to mechanical and electrical properties as well as later rework steps.
In addition to the geometrical and electrical properties of welded copper connections, also the mechanical properties of the joints are relevant for many industrial applications.
A comparison of the mechanical properties of the joints with regard to the knurling parameters of the filler wires show the same behavior as the Cu-OF joints.
For this purpose, the geometrical, electrical and mechanical properties of the resulting joints are determined.
Results and Discussion Especially the weld seam geometry, e.g. the shape of the weld seams is of interest with regard to mechanical and electrical properties as well as later rework steps.
In addition to the geometrical and electrical properties of welded copper connections, also the mechanical properties of the joints are relevant for many industrial applications.
A comparison of the mechanical properties of the joints with regard to the knurling parameters of the filler wires show the same behavior as the Cu-OF joints.
For this purpose, the geometrical, electrical and mechanical properties of the resulting joints are determined.
Online since: June 2011
Authors: A. El Hami, Anis Ben Abdessalem
These uncertainties can manifest during production and affect considerably the final quality of the part and their mechanical properties and can lead to the failure of the process.
Koç et al. [17] found that loading path and variation in material properties has a significant effect on the robustness of the THP and final part specifications.
Table 1 illustrates the statistical properties of the design variables.
Table 1 Statistical properties of the control points described the load path Fig. 5 Definition of the design variables 2.
Table 2 illustrates the statistical properties of all random parameters.
Koç et al. [17] found that loading path and variation in material properties has a significant effect on the robustness of the THP and final part specifications.
Table 1 illustrates the statistical properties of the design variables.
Table 1 Statistical properties of the control points described the load path Fig. 5 Definition of the design variables 2.
Table 2 illustrates the statistical properties of all random parameters.
Online since: April 2022
Authors: Oluseyi O. Ajayi, Olufunmilayo Oluwabukola Joseph, Philip Babalola, Nduka E. Udoye, Joseph O. Dirisu, Sunday Olayinka Oyedepo, Michael Ajibero, Ojo Sunday Isaac Fayomi, K.M. Oluwasegun
The perfection of the ceiling-making process is very subjective to the adhesive and density levels of physical and mechanical properties.
Most importantly, microstructures affect the physical properties and behaviour of a material, and we can tailor the microstructure of a material to give it specific properties (this is the subject of the next course).
The minimal fire resistivity of the epoxy polymer signifies a limitation in major structural implementations because it affects the mechanical properties of the composite.
The inclusion of fire retardants, however, would retain their thermal and mechanical properties [34, 37].
The Mechanical Properties of Ceiling Board Produced from Waste Paper.
Most importantly, microstructures affect the physical properties and behaviour of a material, and we can tailor the microstructure of a material to give it specific properties (this is the subject of the next course).
The minimal fire resistivity of the epoxy polymer signifies a limitation in major structural implementations because it affects the mechanical properties of the composite.
The inclusion of fire retardants, however, would retain their thermal and mechanical properties [34, 37].
The Mechanical Properties of Ceiling Board Produced from Waste Paper.
Online since: June 2013
Authors: Wing Kong Chiu, Lydia Chwang Yuh Wong, Matthias Russ, Susan Liew
Vibration analysis involves the study of dynamic responses, namely the frequency response and resonance frequency, of a structure induced by mechanical excitation [21, 23].
This allowed more tests to be conducted and also ensures repeatability as opposed to using cadaveric pelvises which will vary in material properties, size, and may be limited in availability.
Therefore changes in surface displacement as a result of a mechanical excitation in a specimen can be detected so long as the PZT is bonded securely onto the specimen.
Laugier, Computational evaluation of the compositional factors in fracture healing affecting ultrasound axial transmission measurements, Ultrasound Med Biol, 36 (2010) 1314-26 [16] C.F.
Cunningham, Monitoring the mechanical properties of healing bone, Clin Orthop Relat Res, 467 (2009) 1964-71 [24] G.
This allowed more tests to be conducted and also ensures repeatability as opposed to using cadaveric pelvises which will vary in material properties, size, and may be limited in availability.
Therefore changes in surface displacement as a result of a mechanical excitation in a specimen can be detected so long as the PZT is bonded securely onto the specimen.
Laugier, Computational evaluation of the compositional factors in fracture healing affecting ultrasound axial transmission measurements, Ultrasound Med Biol, 36 (2010) 1314-26 [16] C.F.
Cunningham, Monitoring the mechanical properties of healing bone, Clin Orthop Relat Res, 467 (2009) 1964-71 [24] G.
Online since: September 2014
Authors: M.Y. Ali, M.H. Zainulabidin, A.A. Saad, Abdul Latif Mohd Tobi
Premature mechanical failure can occur due to fretting even when the applied loads are well below structural design limits.
Applied normal load, slip amplitude, frequency, contact geometry, surface roughness and material properties are the main parameters that affect the fretting wear response [2].
For Isotropic hardening model, plasticity is simply expansion of the yield locus by the same factor in all loading directions.
The material properties assigned to the geometries is of titanium alloy, Ti-6Al-4V.
The elastic modelled are Young's modulus of 115 GPa and Poisson's ratio of 0.342.The plasticity properties of the titanium alloy, Ti-6Al-4V is as shown in the Table 1 [8].
Applied normal load, slip amplitude, frequency, contact geometry, surface roughness and material properties are the main parameters that affect the fretting wear response [2].
For Isotropic hardening model, plasticity is simply expansion of the yield locus by the same factor in all loading directions.
The material properties assigned to the geometries is of titanium alloy, Ti-6Al-4V.
The elastic modelled are Young's modulus of 115 GPa and Poisson's ratio of 0.342.The plasticity properties of the titanium alloy, Ti-6Al-4V is as shown in the Table 1 [8].
Online since: March 2012
Authors: Ping Jin, De Wang, Xiao Ming Tan
Hygrothermal behavior is an important factor need to be considered in the whole environment, and it is also the problem that all the composite materials must face.
In general terms, with properties being sensitive to the condition of environment, interlaminar shear and flexural properties are generally more sensitive to moisture than tensile properties, especially in high temperature[9].
As an important micro-structure, the performance of fiber-matrix interface affects the whole performance of composite materials directly[15].
(2) Mechanical hinge: This is produced by crack and roughness of the skin-face
References [1] Sun Tao: The influence of Pore on the Mechanical properties of CFRP on Hygrothermal Environment (Harbin engineering university, Harbin 2010), in Chinese
In general terms, with properties being sensitive to the condition of environment, interlaminar shear and flexural properties are generally more sensitive to moisture than tensile properties, especially in high temperature[9].
As an important micro-structure, the performance of fiber-matrix interface affects the whole performance of composite materials directly[15].
(2) Mechanical hinge: This is produced by crack and roughness of the skin-face
References [1] Sun Tao: The influence of Pore on the Mechanical properties of CFRP on Hygrothermal Environment (Harbin engineering university, Harbin 2010), in Chinese
Online since: October 2006
Authors: S.W. Chung, Byung Young Moon, Byeong Soo Kim, H. K. Kang
Chung
4
1,4
Pusan National University, 30 Jangueon-dong, Keumjeong-ku, Busan P.O.B 609-735, Korea
2
Department of Mechanical and Automobile Engineering, Inje University, Kimhae, Korea
3
Department of Mechanical Engineering, Kyungsang National University, Kyungnam, Korea
a
moonby@pusan.ac.kr
Keywords: Finite elements, Stress extrapolation, Knee Contact System, Tribology, Coating Failure.
Material properties of steel ( E = 200 GPa and ν=0.3) were prescribed to all models.
The stress intensity factor for this Mode I loading is given by the well-known formula: ( ) ( )baFaK II / 2/1 πσ= (1) where a is the crack length, b is the plate width and )/( baFI is obtained as )]2//[cos(]})2/sin(1[37.0)/(02.2752.0{)]2/tan()/2[()/( 3 2/1 ba ba ba baabbaFI π π ππ −+ + = (2) (a) (b) Fig. 2 (a) Finite element mesh of Model 1, showing full constraint along the left edge and uniform −x directed stress applied at right.
Their use may affect the present trends and conclusions.
References [1] Banks-Sills, L. and Sherman, D., "Comparison of methods for calculating stress intensity factors with quarter point elements."
Material properties of steel ( E = 200 GPa and ν=0.3) were prescribed to all models.
The stress intensity factor for this Mode I loading is given by the well-known formula: ( ) ( )baFaK II / 2/1 πσ= (1) where a is the crack length, b is the plate width and )/( baFI is obtained as )]2//[cos(]})2/sin(1[37.0)/(02.2752.0{)]2/tan()/2[()/( 3 2/1 ba ba ba baabbaFI π π ππ −+ + = (2) (a) (b) Fig. 2 (a) Finite element mesh of Model 1, showing full constraint along the left edge and uniform −x directed stress applied at right.
Their use may affect the present trends and conclusions.
References [1] Banks-Sills, L. and Sherman, D., "Comparison of methods for calculating stress intensity factors with quarter point elements."