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Online since: May 2014
Authors: Hamid Reza Zareie Rajani, Andre Bernard Phillion
The solidification of the weld pool thus strongly affects the final properties of the fusion weld [4].
The authors were able to link the behaviour of the grain network to the macroscopic properties of the semisolid material.
Such a concurrent continuity is a key factor for semisolid defect formation.
Such a network of liquid channels plays a key role in the mechanical behaviour of the semisolid material, and the formation of hot cracks is strongly affected by their features (size, shape, etc.) [10].
Gilbert Kaufman, Properties of Aluminum Alloys, Aluminum Association, Ohio, 1999
The authors were able to link the behaviour of the grain network to the macroscopic properties of the semisolid material.
Such a concurrent continuity is a key factor for semisolid defect formation.
Such a network of liquid channels plays a key role in the mechanical behaviour of the semisolid material, and the formation of hot cracks is strongly affected by their features (size, shape, etc.) [10].
Gilbert Kaufman, Properties of Aluminum Alloys, Aluminum Association, Ohio, 1999
Online since: July 2013
Authors: Zhi Xiang Hu, An Jian Huang, Xiu Xu Zhao
Cyclic variation of oil film pressure generates a cycle of alternating stress on surface of bearing alloy, which is the main factor of bearing failure [2].
Cyclic variation of oil film pressure generates a cycle of alternating stress, which is the main factor of bearing failure.
Because the current difference of property between two kinds of materials, set the alloy layer and steel back to different entity unit of different meshing unit.
[8]Gui Changlin,He Zhixian, Li Zhen, Sun Jun.Systematical Analysis Method for the Mechanical Behaviors of Crankshaft to Bearing System [J].
Mechanical transmission,2008,32(3):4-5,8
Cyclic variation of oil film pressure generates a cycle of alternating stress, which is the main factor of bearing failure.
Because the current difference of property between two kinds of materials, set the alloy layer and steel back to different entity unit of different meshing unit.
[8]Gui Changlin,He Zhixian, Li Zhen, Sun Jun.Systematical Analysis Method for the Mechanical Behaviors of Crankshaft to Bearing System [J].
Mechanical transmission,2008,32(3):4-5,8
Online since: February 2026
Authors: Ruslan Sabah Abdulrahman, Farah Abdalsalam Ibrahim, Safaa H. Faisal, Tahseen A. Jabbar
Results reveal that the size of the internal heating source significantly affects the thermal performance of the combined structure.
This will make density difference that facilitates heat transfer without any external mechanical need.
The results showed that all geometric factors of the heater affect the flow field, temperature distribution, and heat transfer performance.
Furthermore, the mean temperature Tm= (TH+Tair)/2 is used to evaluate temperature-dependent physical properties.
Journal of Mechanical Science and Technology 33, no. 10 (2019): 4917–4929. https://doi.org/10.1007/s12206-018-0428-x [15] Mohammed, A.
This will make density difference that facilitates heat transfer without any external mechanical need.
The results showed that all geometric factors of the heater affect the flow field, temperature distribution, and heat transfer performance.
Furthermore, the mean temperature Tm= (TH+Tair)/2 is used to evaluate temperature-dependent physical properties.
Journal of Mechanical Science and Technology 33, no. 10 (2019): 4917–4929. https://doi.org/10.1007/s12206-018-0428-x [15] Mohammed, A.
Online since: April 2012
Authors: W. Kranendonk
During transformation this affects the nucleation and growth of ferrite, and hence, the microstructure and mechanical properties of the final product.
Therefore, a consistent reproducibility of mechanical properties of the final product makes high demands on the process control of the whole production chain.
However, even experiments with random orientations are recommended, because they may give at least some indication of the degree of the anisotropy of grain boundary properties.
However, one disadvantage is that properties, extracted from these experiments, are an average over the distribution of grain boundary orientations.
Therefore, these experiments cannot provide information about the anisotropy of grain boundary properties.
Therefore, a consistent reproducibility of mechanical properties of the final product makes high demands on the process control of the whole production chain.
However, even experiments with random orientations are recommended, because they may give at least some indication of the degree of the anisotropy of grain boundary properties.
However, one disadvantage is that properties, extracted from these experiments, are an average over the distribution of grain boundary orientations.
Therefore, these experiments cannot provide information about the anisotropy of grain boundary properties.
Online since: July 2011
Authors: Yong Jiu Shi, Huan Xin Yuan, Gui Xiang Zhang, Yuan Qing Wang
Welded and mechanical connections are both adopted in structural and mechanical systems.
While in China, interrelated concern to special properties of aluminum bolted connections was aroused with the increasing application of aluminum structures.
The detailed material properties were listed in Table 1.
Numerical model, which could be able to replicate the whole loading process, was built up with FE software ANSYS in consideration of actual geometrical and material properties.
The corresponding FE model is shown in Fig. 4(b), with the same material properties and geometrical dimensions.
While in China, interrelated concern to special properties of aluminum bolted connections was aroused with the increasing application of aluminum structures.
The detailed material properties were listed in Table 1.
Numerical model, which could be able to replicate the whole loading process, was built up with FE software ANSYS in consideration of actual geometrical and material properties.
The corresponding FE model is shown in Fig. 4(b), with the same material properties and geometrical dimensions.
Online since: June 2013
Authors: Piotr Pawluk, Emilia Skołek, Michał Kopcewicz, Wiesław Świątnicki
Introduction
Good mechanical properties, high availability and low price makes steel the most often used material for construction and machine components.
The mechanical properties of nanobainitic steel strongly depends on the kind of phases and their volume fraction occurring after the heat treatment.
The results might also be affected by strong and inhomogeneous deformations of crystallographic lattice resulting from high level of internal stress (which might cause differences between real values and the ones assumed in the analysis as specific for analyzed phases).
Another factor influencing the obtained results can be a large share of atoms located in the grain boundaries in the ultrafine structure of the samples after austempering.
It may be attributed to drastic difference of magnetic properties and different shape of obtained CEMS spectrum for non-magnetic austenite than spectra obtained for magnetic phases.
The mechanical properties of nanobainitic steel strongly depends on the kind of phases and their volume fraction occurring after the heat treatment.
The results might also be affected by strong and inhomogeneous deformations of crystallographic lattice resulting from high level of internal stress (which might cause differences between real values and the ones assumed in the analysis as specific for analyzed phases).
Another factor influencing the obtained results can be a large share of atoms located in the grain boundaries in the ultrafine structure of the samples after austempering.
It may be attributed to drastic difference of magnetic properties and different shape of obtained CEMS spectrum for non-magnetic austenite than spectra obtained for magnetic phases.
Online since: December 2010
Authors: Wei Fen Li, Shao Rong Yu, Ping An Shi, Zhi Ming Hao, Jun Wang
But unfortunately, the deformation mechanism of TiNiNb SMA is more complicated and there isn’t effective simulation method for it affected by the b-Nb phase.
(5) where, is the tensor of concentration factor. and
The behavior of SMAs at different temperatures can be described and the main fundamental properties of SMAs are qualitatively and quantitatively reproduced.
Based on the mechanical property experiment research of the TiNiNb shape memory alloy material, the constitutive relation of shape memory alloy was developed to study the mechanical behavior of Ni-Ti shape-memory alloy(SMA) at various temperatures and stress states.
Thermomechanical properties of smart composites.
(5) where, is the tensor of concentration factor. and
The behavior of SMAs at different temperatures can be described and the main fundamental properties of SMAs are qualitatively and quantitatively reproduced.
Based on the mechanical property experiment research of the TiNiNb shape memory alloy material, the constitutive relation of shape memory alloy was developed to study the mechanical behavior of Ni-Ti shape-memory alloy(SMA) at various temperatures and stress states.
Thermomechanical properties of smart composites.
Online since: September 2011
Authors: Yan Zhi Xia, Feng Jun Wang, Li Wen Tan, Quan Ji, Jian Jun Zhang, Feng Yu Quan
Further, the forming difficult degree and fiber physical properties of textile fiber are decided by the rheological property of raw material polymer because of molecular orientation or crystallization [6].
Rheological properties also are studied in these researches.
The mechanical and rheological properties of many alginate composite gels have been investigated, and these studies will provide significantly theoretical support for alginate applications in food and spinning [9-11].
The rheological properties were measured using a rotational rheometer.
Rheological properties determination.
Rheological properties also are studied in these researches.
The mechanical and rheological properties of many alginate composite gels have been investigated, and these studies will provide significantly theoretical support for alginate applications in food and spinning [9-11].
The rheological properties were measured using a rotational rheometer.
Rheological properties determination.
Online since: May 2013
Authors: Britta Wolff
Reported are the results yielded in the research project which covers the investigations to improve the mechanical adherence and to analyze the chemical reaction between the both building materials.
Due to their special structural-physical properties, hydrophobized lime plasters such as tadelakt have been rarely used so far, as there are almost no scientific findings and planning and executing parties are full with uncertainties.
· How does the firing process affect the quality if the lime?
Based on a field study in Morocco into the material composition of tadelakt, a map will be prepared of present-day and historic lime quarrying areas and lime samples analysed according to the factors already mentioned.
[6] Information on: www.kreidezeit.de/Produktinformationen/PDFs_Datenblaetter/Tadelakt.pdf. (10.7.2012) [7] DIN EN 1015-12 Determination of adhesive strength of hardened rendering and plastering mortars on substrates [8] DIN EN ISO 15148 Determination of water absorption coefficient by partial immersion [9] DIN EN ISO 12572 Determination of water vapour transmission properties [10] Dachverband Lehm e.V., Anforderungen an Lehmputze, TM 01, Weimar, 2008
Due to their special structural-physical properties, hydrophobized lime plasters such as tadelakt have been rarely used so far, as there are almost no scientific findings and planning and executing parties are full with uncertainties.
· How does the firing process affect the quality if the lime?
Based on a field study in Morocco into the material composition of tadelakt, a map will be prepared of present-day and historic lime quarrying areas and lime samples analysed according to the factors already mentioned.
[6] Information on: www.kreidezeit.de/Produktinformationen/PDFs_Datenblaetter/Tadelakt.pdf. (10.7.2012) [7] DIN EN 1015-12 Determination of adhesive strength of hardened rendering and plastering mortars on substrates [8] DIN EN ISO 15148 Determination of water absorption coefficient by partial immersion [9] DIN EN ISO 12572 Determination of water vapour transmission properties [10] Dachverband Lehm e.V., Anforderungen an Lehmputze, TM 01, Weimar, 2008
Online since: March 2019
Authors: Dinh Tuan Phan, Huu Quynh Anh Le
Introduction
Carbon nanotubes (CNTs) have attracted considerable attention because of their significant properties such as the unique structure, exceptional mechanical and electronic properties.
Multiwalled Carbon Nanotubes (CNTs) was synthesized by the Institute of Materials Science of Vietnam, with the fundamental physical properties as follows: diameter 20-100nm, length 1-10 µm, purity > 95%. 2.2.
Physical properties of CNTs: The physical properties of adsorbent such as tube diameter, surface functionnalization, amorphous carbon impurities are important contributors to vary surface area and adsorption capacity.
Physical properties of pristine CNTs Adsorbents Surface area [m2/g] Pore volume [cm3/g] [mesopore 5-100 nm] Average pore diameter [nm] CNTs 150,660 0,409 6,06 3.2.
There factors, including the flow rate, temperature and VOCs concentration, were evaluated for their effects on the adsorption performance of CNTs.
Multiwalled Carbon Nanotubes (CNTs) was synthesized by the Institute of Materials Science of Vietnam, with the fundamental physical properties as follows: diameter 20-100nm, length 1-10 µm, purity > 95%. 2.2.
Physical properties of CNTs: The physical properties of adsorbent such as tube diameter, surface functionnalization, amorphous carbon impurities are important contributors to vary surface area and adsorption capacity.
Physical properties of pristine CNTs Adsorbents Surface area [m2/g] Pore volume [cm3/g] [mesopore 5-100 nm] Average pore diameter [nm] CNTs 150,660 0,409 6,06 3.2.
There factors, including the flow rate, temperature and VOCs concentration, were evaluated for their effects on the adsorption performance of CNTs.