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Online since: October 2014
Authors: Tamara Datsuk, U. Ivlev, Viktor Pukhkal
At the stage of building design it is essential to undertake complex analysis allowing revealing quantitative values of the governing factors and forecasting their joint influence affecting indoor microclimate formation.
At the stage of building design it is essential to undertake complex analysis allowing revealing quantitative values of the governing factors and forecasting their joint influence affecting indoor microclimate formation.
Neglecting of the said factors during design stage may cause violation of technical requirements in respect of natural ventilation air exchange rate.
Phase transitions occurring in construction materials pores considerably affect both thermal insulation properties and structures service life duration.
On one hand, such approach allows increasing natural illumination; on the other hand, thermal properties of outer structures are affected due to irregular indoor microclimate parameters distribution because rated resistance of translucent structures to thermal transmission is 6 times lower than that for outer walling.
At the stage of building design it is essential to undertake complex analysis allowing revealing quantitative values of the governing factors and forecasting their joint influence affecting indoor microclimate formation.
Neglecting of the said factors during design stage may cause violation of technical requirements in respect of natural ventilation air exchange rate.
Phase transitions occurring in construction materials pores considerably affect both thermal insulation properties and structures service life duration.
On one hand, such approach allows increasing natural illumination; on the other hand, thermal properties of outer structures are affected due to irregular indoor microclimate parameters distribution because rated resistance of translucent structures to thermal transmission is 6 times lower than that for outer walling.
Online since: November 2016
Authors: Marek S. Weglowski, Stanisław Dymek, Mateusz Kopyściański, Sylwester Błacha
The recent investigation have shown that the accurately selected heat thermal cycles can guarantee the acceptable mechanical properties of heat affected zone (HAZ) of high strength as well as ultra-high strength steels [4,5].
The temperature-time cycles during welding have a significant effect on the mechanical properties of a welded joint.
These factors have a positive effect on the mechanical properties that may reach the level typical for base metals.
Their mechanical properties are shown in Tables 1.
Mechanical properties of S690QL and S960QL steels Mechanical properties Steel S690QL [MPa] S960QL [MPa] Rm [MPa] 850 1065 Re [MPa] 720 1010 A5 [%] 16 14 Table 2.
The temperature-time cycles during welding have a significant effect on the mechanical properties of a welded joint.
These factors have a positive effect on the mechanical properties that may reach the level typical for base metals.
Their mechanical properties are shown in Tables 1.
Mechanical properties of S690QL and S960QL steels Mechanical properties Steel S690QL [MPa] S960QL [MPa] Rm [MPa] 850 1065 Re [MPa] 720 1010 A5 [%] 16 14 Table 2.
Online since: January 2012
Authors: Ming Hua Wu, Dong Ming Qi, Jian Peng Dong, Chong Qian, Xin Jiang
The mechanical properties of latex film were measured according to GB/T 1040-1992 mechanical properties test methods for plastics.
But the hydrophile-lipophile property of cross-linker can not only affect the distribution of cross-linking monomers between the oil and water phases, but also affect the distribution of cross-linking monomers in the oil phase droplet.
As shown in Fig. 2, the above two factors can significantly affect the viscosity and rheology of latex.
Thus, it can be considered that the mechanical properties of film are closely related to their cross-linking degree.
(2) The cross-linking degree and mechanical properties of acrylate Latex film cannot be related to the hydrophile-lipophile property of cross-linking monomers.
But the hydrophile-lipophile property of cross-linker can not only affect the distribution of cross-linking monomers between the oil and water phases, but also affect the distribution of cross-linking monomers in the oil phase droplet.
As shown in Fig. 2, the above two factors can significantly affect the viscosity and rheology of latex.
Thus, it can be considered that the mechanical properties of film are closely related to their cross-linking degree.
(2) The cross-linking degree and mechanical properties of acrylate Latex film cannot be related to the hydrophile-lipophile property of cross-linking monomers.
Online since: August 2015
Authors: S. Kalirasu, N. Rajini, N. Bharath Sagar, D. Mahesh Kumar, A. Gomathi Sankar
The influence of abrasive particle was found to be predominant affecting the performance of the output quality measures.
Venkateshwaran N et.al [1] summarised the research work published in the field of banana fibre reinforced polymer composites with special references to the structure, physical and mechanical properties of the composites.
It shows the effect of control factors on the kerf angle.
In order to study the significance of parameters affecting the kerf angle, ANOVA is used.
Fig.4, Average S/N ratio for control factors.
Venkateshwaran N et.al [1] summarised the research work published in the field of banana fibre reinforced polymer composites with special references to the structure, physical and mechanical properties of the composites.
It shows the effect of control factors on the kerf angle.
In order to study the significance of parameters affecting the kerf angle, ANOVA is used.
Fig.4, Average S/N ratio for control factors.
Online since: July 2013
Authors: Peng Cao, Ma Qian, David H. St. John, Michael Bermingham, Mark A. Easton
Both these factors have been brought together in the Interdependence Theory [8].
Large agglomerates affect mechanical integrity of castings.
Alloy composition changes and mechanical properties may not be desirable.
Some elements are detrimental to mechanical properties.
If one could be identified it could have a significant effect on the mechanical properties of this group of alloys.
Large agglomerates affect mechanical integrity of castings.
Alloy composition changes and mechanical properties may not be desirable.
Some elements are detrimental to mechanical properties.
If one could be identified it could have a significant effect on the mechanical properties of this group of alloys.
Online since: June 2020
Authors: Juri Saedon, Hwi Chie Ho, Shahriman Adenan, Armansyah Armansyah
As produced, the three factors of parameters were found statistically significant.
Conclusion This experiment and tests of three factors of parameters i.e. speed of spindle, depth of tool, and time of dwell have been assessed through fatigue testing and analysis of mode of failure in order to see significant contribution to the mechanical property of the joint of AA5052-H112 sheets.
Zou, “Effect of welding parameters on microstructure and mechanical properties of friction stir spot welded 5052 aluminum alloy,” Mater.
Muhayat, Triyono, “Effect of Tool Plunge Depth and Pin Profile on Mechanical Properties of Friction Stir Spot Welded AA5052 Joints,” in ICAME, 2017
Gianluca Buffa, Pierluigi Fanelli Livan Fratinia, “Influence of joint geometry on micro and macro mechanical properties of friction stir spot welded joints,” Procedia Eng., vol. 81, no. 2, pp. 2086–2091, 2014
Conclusion This experiment and tests of three factors of parameters i.e. speed of spindle, depth of tool, and time of dwell have been assessed through fatigue testing and analysis of mode of failure in order to see significant contribution to the mechanical property of the joint of AA5052-H112 sheets.
Zou, “Effect of welding parameters on microstructure and mechanical properties of friction stir spot welded 5052 aluminum alloy,” Mater.
Muhayat, Triyono, “Effect of Tool Plunge Depth and Pin Profile on Mechanical Properties of Friction Stir Spot Welded AA5052 Joints,” in ICAME, 2017
Gianluca Buffa, Pierluigi Fanelli Livan Fratinia, “Influence of joint geometry on micro and macro mechanical properties of friction stir spot welded joints,” Procedia Eng., vol. 81, no. 2, pp. 2086–2091, 2014
Online since: April 2024
Authors: Mohsen Ghali, Ahmed Abd El-Moneim, Cyril O. Ugwuoke
Thermoelectric Properties of Spray Coated n-Type PEDOT:PSS Film
Cyril O.
The tunning of the electrical properties of PEDOT:PSS can be achieved by solvent treatment.
It causes swelling of the polymer matrix, which could negatively affect PEDOT:PSS properties [11].
Karaman [13] reported the TE properties of PEDOT:PSS using BPO4 dopant.
Karaman [14] reported the TE properties of PEDOT:PSS/TiS2.
The tunning of the electrical properties of PEDOT:PSS can be achieved by solvent treatment.
It causes swelling of the polymer matrix, which could negatively affect PEDOT:PSS properties [11].
Karaman [13] reported the TE properties of PEDOT:PSS using BPO4 dopant.
Karaman [14] reported the TE properties of PEDOT:PSS/TiS2.
Online since: December 2012
Authors: Shuang Bao Zhang, Hai Tao Cheng, Wen Yan Li
In this paper, the interfacial compatibility of the bamboo fiber/thermoplastic and affected factors were briefly analyzed, and improving methods of the interfacial compatibility were introduced.
Material Properties Bamboo Fiber Properties.
Thermoplastic Properties.
Through border and pressure method, the mechanical properties of bamboo fiber will relatively decrease, but the composites’ will be improved [9].
Maximizing all physical and chemical methods based on mastering bamboo fiber properties to modify, thus improving the mechanical properties of bamboo fiber and the compatibility of the composite interface.
Material Properties Bamboo Fiber Properties.
Thermoplastic Properties.
Through border and pressure method, the mechanical properties of bamboo fiber will relatively decrease, but the composites’ will be improved [9].
Maximizing all physical and chemical methods based on mastering bamboo fiber properties to modify, thus improving the mechanical properties of bamboo fiber and the compatibility of the composite interface.
Online since: May 2011
Authors: Keisuke Houri, Kenji Kanemasu, Kenichi Saruwatari, Megumi Uryu, Katsuyuki Kida, Takashi Honda, Edson Costa Santos
Cyclic stresses around welding joint-part affect the strength of mechanical components.
Tables 1 and 2 show the chemical composition and mechanical properties of the specimens, respectively.
Mechanical properties of the specimen Yielding stress (MPa) Tensile strength (MPa) 318 440 Table 3.
This means that the magnetic field is affected by cyclic fatigue in a direction perpendicular to the specimen surface, i.e., the key factor to evaluate the fatigue is the range between “S” and “N” (“peak-to-bottom” values) of the magnetic fields.
XV INTERNATIONAL COLLOQUIUM "MECHANICAL FATIGUE OF METALS" (XV-ICMFM), Opole, Poland, September 13 - 15, pdf-p.1-6 (2010)
Tables 1 and 2 show the chemical composition and mechanical properties of the specimens, respectively.
Mechanical properties of the specimen Yielding stress (MPa) Tensile strength (MPa) 318 440 Table 3.
This means that the magnetic field is affected by cyclic fatigue in a direction perpendicular to the specimen surface, i.e., the key factor to evaluate the fatigue is the range between “S” and “N” (“peak-to-bottom” values) of the magnetic fields.
XV INTERNATIONAL COLLOQUIUM "MECHANICAL FATIGUE OF METALS" (XV-ICMFM), Opole, Poland, September 13 - 15, pdf-p.1-6 (2010)
Online since: April 2014
Authors: Tao Ge, Xiang Shen, Xiao Zhou
Flexibility is an important mechanical property of stent.
With the emergence of biodegradable materials [2], for a stent that is given in its structure, factors that affect the stent flexibility not only include the materials of stent, but also include the work status of stent, such as crimping status during delivery, supporting status after expansion of stent and so on.
More and more attention is paid to the flexibility of stent by domestic and abroad researchers since it is one of the important mechanical properties of stent.
The general mechanical properties of this material are as follows [10]: Yang’s modulus, 200 GPa; Poisson’s ratio, 0.35; tangent modulus, 1 GPa; yield strength, 315 MPa.
The mechanical properties of biodegradable pure iron are as follows [11]: Yang’s modulus, 211 GPa; Poisson’s ratio, 0.3; yield strength, 130 MPa; tangent modulus, 470 MPa.
With the emergence of biodegradable materials [2], for a stent that is given in its structure, factors that affect the stent flexibility not only include the materials of stent, but also include the work status of stent, such as crimping status during delivery, supporting status after expansion of stent and so on.
More and more attention is paid to the flexibility of stent by domestic and abroad researchers since it is one of the important mechanical properties of stent.
The general mechanical properties of this material are as follows [10]: Yang’s modulus, 200 GPa; Poisson’s ratio, 0.35; tangent modulus, 1 GPa; yield strength, 315 MPa.
The mechanical properties of biodegradable pure iron are as follows [11]: Yang’s modulus, 211 GPa; Poisson’s ratio, 0.3; yield strength, 130 MPa; tangent modulus, 470 MPa.