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Online since: July 2020
Authors: Amirah Abdul Latif, Halimah Mohamed Kamari, Nurisya Mohd Shah, Nurhayati Mohd Nor
The elastic properties of {[(TeO2)0.7 (B2O3)0.3]0.8(SiO2)0.2}(1-x)(V2O5)x glasses are investigated using ultrasonic pulse echo measurements and their elastic properties have been characterized at room temperature.
Introduction The propagation of ultrasonic wave in solids such as glass provides valuable information regarding the solids state motion in the material and has been considerable interest to understand the mechanical properties.
Vanadium-containing glasses is of interest as it present interesting semiconducting properties to the materials.
Another factor affecting Poisson's ratio is the average cross link density.
Syala, Mechanical and thermal properties of TeO2–Bi2O3–V2O5–Na2O–TiO2 glass system, Ceramics International. 42(16) (2016) 19218-19224
Introduction The propagation of ultrasonic wave in solids such as glass provides valuable information regarding the solids state motion in the material and has been considerable interest to understand the mechanical properties.
Vanadium-containing glasses is of interest as it present interesting semiconducting properties to the materials.
Another factor affecting Poisson's ratio is the average cross link density.
Syala, Mechanical and thermal properties of TeO2–Bi2O3–V2O5–Na2O–TiO2 glass system, Ceramics International. 42(16) (2016) 19218-19224
Online since: October 2025
Authors: Jacob Mayowa Owoyemi, Chinwuba Arum, Olurotimi Olusegun Ekundayo
Density is generally considered a predictor of wood strength and affects all other wood properties [4].
The growing conditions of the parent tree affect its properties.
Similarly, in wood composites, the aforementioned variable affects the mechanical properties of the wood product.
It is recognized that the process of destructive assessment of mechanical properties for wood is quite wasteful and would add to the demand pressure for green materials.
Physical-Mechanical Properties of Glued Laminated Timber Made from Tropical Small-Diameter Logs Grown in Indonesia.
The growing conditions of the parent tree affect its properties.
Similarly, in wood composites, the aforementioned variable affects the mechanical properties of the wood product.
It is recognized that the process of destructive assessment of mechanical properties for wood is quite wasteful and would add to the demand pressure for green materials.
Physical-Mechanical Properties of Glued Laminated Timber Made from Tropical Small-Diameter Logs Grown in Indonesia.
Online since: February 2016
Authors: Sergey M. Martemyanov, Olga S. Kvashnina, Andrey A. Bukharkin, Ilia A. Koryashov
However, the task of creating an adequate physical model requires taking into account a multitude of factors.
Therefore, the similarity criteria of the physical model should include all the factors, affecting the dynamics of the sample heating and the pyrolysis products composition.
Due to high dielectric properties of the bar material, in contrast to steel, it has no effect on the electromagnetic field distribution in the sample.
Overpressure safety is provided by the mechanical protect valve calibrated at the pressure of 10.1 kgf/cm2.
[5] Lopatin V.V., Martemyanov S.M., Investigation of the dielectric properties of oil shale, Russian Physics Journal, 55 (2012) 511-515 [6] Bukharkin A.A., Lopatin V.V., Martemyanov S.M., Koryashov I.A., Electrical discharge phenomena application for solid fossil fuels in-situ conversion, Journal of Physics: Conference Series, 552 (2014) 1-4.
Therefore, the similarity criteria of the physical model should include all the factors, affecting the dynamics of the sample heating and the pyrolysis products composition.
Due to high dielectric properties of the bar material, in contrast to steel, it has no effect on the electromagnetic field distribution in the sample.
Overpressure safety is provided by the mechanical protect valve calibrated at the pressure of 10.1 kgf/cm2.
[5] Lopatin V.V., Martemyanov S.M., Investigation of the dielectric properties of oil shale, Russian Physics Journal, 55 (2012) 511-515 [6] Bukharkin A.A., Lopatin V.V., Martemyanov S.M., Koryashov I.A., Electrical discharge phenomena application for solid fossil fuels in-situ conversion, Journal of Physics: Conference Series, 552 (2014) 1-4.
Online since: September 2013
Authors: Jian Zhang, Dong Lai Zhang
Changing the structure parameters and material properties of MCM would directly changes the thermal load distribution of the whole structure, thereby affecting the chip junction temperature.
Therefore thermal management of MCM, reasonable design of the structure of MCM and analysis of the structure parameters or material properties are benefit to guide the thermal design of MCM.
The parametric study shows the variation in package thermal resistance due to different thermal grease thicknesses and different chip-lid thermal interface material (TIM) properties [14].
And [19] analyzes the effects of factors such as thermal conductivity and interfacial thermal resistance of the thermal interface materials, solder bump patterns, solder ball patterns, thickness of the chips, the spacing between chips, flow velocity and liquid inlet temperature on the thermal performance of MCM.
Table 1 Structure parameters and material properties of MCM It is air natural convection cooling in the MCM module, the surrounding air temperature is 25℃.
Therefore thermal management of MCM, reasonable design of the structure of MCM and analysis of the structure parameters or material properties are benefit to guide the thermal design of MCM.
The parametric study shows the variation in package thermal resistance due to different thermal grease thicknesses and different chip-lid thermal interface material (TIM) properties [14].
And [19] analyzes the effects of factors such as thermal conductivity and interfacial thermal resistance of the thermal interface materials, solder bump patterns, solder ball patterns, thickness of the chips, the spacing between chips, flow velocity and liquid inlet temperature on the thermal performance of MCM.
Table 1 Structure parameters and material properties of MCM It is air natural convection cooling in the MCM module, the surrounding air temperature is 25℃.
Online since: October 2021
Authors: Jenjira Sukmanee, Khompee Limpadapun
It decided the factors were perceived to have a significant effect on the role of one factor, dependent on the extent of the other factors.
From Anova Table (Table 3) and Fig.3, they clearly demonstrated that the three main factors directly affect the Final Moisture content (P-Value, which is less than α = 0.05).
Imaida, Y, A study on preparation and mechanical properties of long jute fiber reinforced polylactic acid by the injection molding process.
The effects of moisture and temperature on the mechanical properties of additive manufacturing components: Fused deposition modeling.
Low, Effect of water absorption on the mechanical properties of nanofiller reinforced epoxy nanocomposites, Mater.
From Anova Table (Table 3) and Fig.3, they clearly demonstrated that the three main factors directly affect the Final Moisture content (P-Value, which is less than α = 0.05).
Imaida, Y, A study on preparation and mechanical properties of long jute fiber reinforced polylactic acid by the injection molding process.
The effects of moisture and temperature on the mechanical properties of additive manufacturing components: Fused deposition modeling.
Low, Effect of water absorption on the mechanical properties of nanofiller reinforced epoxy nanocomposites, Mater.
Online since: September 2011
Authors: Zhi Yuan Zhang, Zong Min Liu, Chao Sun, Ji Ze Mao
This might cause concrete materials degradation and reduce the mechanical performance of concrete seriously.
As the porosity increased and mechanical properties decreased, the concrete materials degrade when subject to freezing and thawing.
Because of the inhomogeneous chloride ion distribution during its diffusion process, concrete showed properties of layered degradation when subjected to comprehensive effects.
Ling: Degradation of Mechanical Properties of Concrete Caused by Freeze-thaw Action, Journal of Building Structures, 29(2008), p. 117-123 [4] J.
Ru: The Durability and Prediction of Concrete under Multi-factors of Freeze-thaw Action Cycles, Southeast University, Doctoral Dissertation, (2000) [7] K.E.
As the porosity increased and mechanical properties decreased, the concrete materials degrade when subject to freezing and thawing.
Because of the inhomogeneous chloride ion distribution during its diffusion process, concrete showed properties of layered degradation when subjected to comprehensive effects.
Ling: Degradation of Mechanical Properties of Concrete Caused by Freeze-thaw Action, Journal of Building Structures, 29(2008), p. 117-123 [4] J.
Ru: The Durability and Prediction of Concrete under Multi-factors of Freeze-thaw Action Cycles, Southeast University, Doctoral Dissertation, (2000) [7] K.E.
Online since: April 2023
Authors: B.K. Barakhtin, S.N. Perevislov, A.S. Zhukov, V.V. Madin, P.A. Kuznetcov
The properties of dampers manufactured by the selective laser melting are investigated.
Microswear with different elastic and plastic properties were found.
It is assumed that the features in the atomic crystalline structure of the SLM metal are defining factors in the elastic and plastic properties of the dampers.
Such defects affect the mechanical behavior of thin walls when they are bended or compressed, which is noted on the compression diagrams (Fig. 5) in the form of local minimums.
Taking into account the remarks on the mechanical stability of the plates, it can be assumed that the orientation and length of the melt volume, as well as the elastoplastic accommodation of their boundaries, are determining structural factors in the elastoplastic properties of the metal.
Microswear with different elastic and plastic properties were found.
It is assumed that the features in the atomic crystalline structure of the SLM metal are defining factors in the elastic and plastic properties of the dampers.
Such defects affect the mechanical behavior of thin walls when they are bended or compressed, which is noted on the compression diagrams (Fig. 5) in the form of local minimums.
Taking into account the remarks on the mechanical stability of the plates, it can be assumed that the orientation and length of the melt volume, as well as the elastoplastic accommodation of their boundaries, are determining structural factors in the elastoplastic properties of the metal.
Online since: July 2007
Authors: M. Ham, J. Jeswiet
The Box-Behnken used in this paper solved five factors at three levels in forty six runs.
The previous studies of parameters affecting the formability of SPIF were done in on an ad hoc basis.
The points at the vertices correspond to the limits of the factors.
The values for these factors are given in Table 2.
All of these plots are concave in shape; the reason for the shape is the properties of the material.
The previous studies of parameters affecting the formability of SPIF were done in on an ad hoc basis.
The points at the vertices correspond to the limits of the factors.
The values for these factors are given in Table 2.
All of these plots are concave in shape; the reason for the shape is the properties of the material.
Online since: January 2012
Authors: Zhao Feng Chen, Juan Zhang, Bin Bin Li, Jie Ming Zhou, Zhou Chen
Because of this hardly permeable rigid barrier, VIS presents more fantastic properties such as resistance against external mechanical loads and penetration of atmospheric gases and water vapor.
(a) Exterior perspective of VIS Evacuation valve Mash-screen Stainless envelope Core material (b) Sketch of the structure of VIS Fig.1 Structure of a VIS specimen Lower sheet Core materials Upper sheet Welding Evacuation Fig.2 Sketch of manufacturing process of a VIS specimen Capability of effective thermal insulation The equivalent thermal conductivity (λequ) of VIS is affected by two factors: the center-of-panel thermal conductivity (λcop) and the edge effects [6, 7].
Another notable property of VIS is that the rigid structure of VIS made them supportable of relatively high mechanical loads, it is testified that no element was damaged even with loads up to 90kN on an area of 100mm×100mm [6].
Mainly two factors are respondent for their service life: one is the core material; the other is the type and quality of barrier envelope.
On the one hand, high thermal performance is presented by resistance against gases; on the other hand, VIS can withstand relatively high mechanical loads, which greatly facilitates the use of VIS element in load-bearing structure.
(a) Exterior perspective of VIS Evacuation valve Mash-screen Stainless envelope Core material (b) Sketch of the structure of VIS Fig.1 Structure of a VIS specimen Lower sheet Core materials Upper sheet Welding Evacuation Fig.2 Sketch of manufacturing process of a VIS specimen Capability of effective thermal insulation The equivalent thermal conductivity (λequ) of VIS is affected by two factors: the center-of-panel thermal conductivity (λcop) and the edge effects [6, 7].
Another notable property of VIS is that the rigid structure of VIS made them supportable of relatively high mechanical loads, it is testified that no element was damaged even with loads up to 90kN on an area of 100mm×100mm [6].
Mainly two factors are respondent for their service life: one is the core material; the other is the type and quality of barrier envelope.
On the one hand, high thermal performance is presented by resistance against gases; on the other hand, VIS can withstand relatively high mechanical loads, which greatly facilitates the use of VIS element in load-bearing structure.
Online since: August 2013
Authors: Li Li Yi, Xue Chun Li, Shi Xing Yu, Jin Yong Yang, Xue Shun Wang, Lu Wang
Density is an important indicator of wood’s properties, which directly impact on the physical, mechanical and processing and using performance.
Wood as a load-bearing structure of the material, its quality depends mainly on its density, which is closely related with its mechanical properties, hardness, abrasion resistance, and so on.
Since the absorption intensity of near-infrared spectral is weak, the sample spectrum is susceptible to the sample state, the measurement conditions and other factors.
Therefore, before building spectral prediction model, the spectral data need to be preprocessing to enhance the effective information of spectrum, eliminating the interference of various factors, improved spectral prediction accuracy.
Conclusion Wood density is one of the important properties of wood, using near-infrared spectroscopy technology can predict it quickly.
Wood as a load-bearing structure of the material, its quality depends mainly on its density, which is closely related with its mechanical properties, hardness, abrasion resistance, and so on.
Since the absorption intensity of near-infrared spectral is weak, the sample spectrum is susceptible to the sample state, the measurement conditions and other factors.
Therefore, before building spectral prediction model, the spectral data need to be preprocessing to enhance the effective information of spectrum, eliminating the interference of various factors, improved spectral prediction accuracy.
Conclusion Wood density is one of the important properties of wood, using near-infrared spectroscopy technology can predict it quickly.