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Online since: February 2014
Authors: Bharoto Bharoto, Rifai Muslih, Herry Mugirahardjo, Tri Hardi Priyanto
This indicates a change in crystallite size that affects the behavior of plastic deformation in the welded material.
Fundamentally, FSW is a severe thermo-mechanical deformation process; it relies on extensive thermo-mechanical  deformation to develop the metallurgical bonding.
The key factors contributing to a successful FSW operation are the temperature and stress distributions during the process, particularly the temperature and stresses near the rotating tool where the materials is stirred and metallurgical bond is formed.
The deep penetration capability of neutron into most metallic materials makes neutron diffraction a unique and powerful tool for the investigation of their structures and properties [3].
The deformation is divided into three zones, namely stir zone (SZ), thermo-mechanically affected zone (TMAZ) and heat affected zone (HAZ).
Online since: August 2023
Authors: Marion Cossin, Annie Ross, Prince Francois
The amount of energy stored and released from the board is dependent on various factors, such as the height and movement of the landing acrobat, the mass and movement of the taking-off acrobat, and the mechanical properties of the board.
Unlike most sports, most manufacturers don’t measure or know the mechanical properties of circus equipment they build.
The teeterboard and the hockey stick share similar properties.
Table 1 Mechanical properties and dimensions of the teeterboards.
These findings offer further understanding on the mechanical factors that influence the performance of Korean teeterboard acrobats.
Online since: July 2015
Authors: Andreas Weber, Patrick Zierdt
Additionally, constant research on WPC has significantly improved their mechanical properties, weatherability and processability [2,3].
Verification of this approach was done by characterization of the mechanical and thermo-mechanical properties of the processed bio-WPC.
To investigate the impact of water uptake on the mechanical properties, testing was done on fresh as-molded and conditioned specimens.
The thermo-mechanical properties of the processed bio-WPC were investigated by analysis of the heat distortion temperature.
Gardner, Dynamic mechanical properties of extruded nylon-wood composites, Polym.
Online since: October 2008
Authors: Wen Hui Li, Sheng Qiang Yang, H.L. Chen
Consequently, it has effects of finishing crankshafts, increasing surface quality and improving the physical-mechanical properties.
Through surface geometric characteristic, physical-mechanical property, cleanness degree, this paper is to decide the effect improving surface integrity [5, 6].
(a) before finishing (b) finishing 40min Fig. 4 Contrast photos of surface micro shape Surface Physical-mechanical Property Analysis Surface hardness.
Therefore its manufacturing enterprises not only controls its material, size, tolerances, but also its cleanliness degree, which is one of the most important factors.
It could produce abrasions, damage crankshaft bearing, hinder cooling water flow, etc., which affects the product life and performance.
Online since: May 2011
Authors: Long Wen, Xiao Jiang Wang, Hao Xiang Wu, Bao Lin Cui, Xiao Yi Cui, Hao Liu
BRA is composed of 70~80 percent Buton rock (BR) minerals and 20~30 percent pure rock asphalt (RA), which is formed by the function so-called “adsorption~ integration~ deposition” between ancient oil and volcanic ash owing to the effect of different kinds of environmental factors including heat energy, temperature, water, enzyme, pressure and geology.
All previous studies show that BRA has some wonderful pavement performance properties, for example: high softening point, high content of nitrogen, non-wax, high molecular weight, high viscosity, strong anti-oxidation and spalling-resistance, good durability and corrosion resistance, easy of processing and storage, good compatibility and non-segregation.
Because of the effect of “adsorption~ integration~ deposition” in billons of years, the mechanical properties, adhesion property and spalling-resistance capability of “BR~RA” blend are much better than ordinary mastic composed by matrix asphalt and slag.
In addition, the special “BR~RA” blend microstructure of BRA possesses wonderful mechanical properties, adhesion property and spalling-resistance capability.
Its performance is affected by temperature, load and time significantly.
Online since: May 2013
Authors: V.D. Danchuk, A.P. Kravchuk
It is shown that one of the factors that determine the appropriate rheological properties of bitumen is the existence in certain temperature ranges rotational phase of hydrocarbon components.
Therefore, at the first stage it is advisable to study in depth the properties of relatively simple model hydrocarbon components.
This will detect the influence of the main features of the processes that occur in these materials on their rheological properties.
This leads to dramatic (nonlinear) changes in structural and mechanical properties of hydrocarbon components of bitumen, namely, sharp on some orders, reducing their viscosity even at temperatures below the melting point.
Thus, there is reason to believe that one of the factors that determine the appropriate rheological properties of bitumen is the existence in certain temperature ranges rotational phase of hydrocarbon components.
Online since: July 2022
Authors: Andrea Ghiotti, Stefania Bruschi, Rachele Bertolini
This poses challenging issues since the microstructural features characterizing the AM alloys are drastically different from those of the wrought alloys of the same chemical composition, which, in turn, may affect the mechanical and machining response to a great extent.
This can be ascribed to various factors, especially the layer-by-layer nature of the process, namely the smallest built element, which affects the part resolution and is influenced by the deposition parameters and the characteristics of the feedstock material, the defects that can arise as a consequence of the material deposition and fusion, like partially fused powders, balling effect,...
In [11] the SLM Inconel 718 was found to have comparable machinability of the cast and wrought alloy if subjected to heat treatments capable to guarantee the same mechanical properties of the conventionally fabricated alloy and when using emulsion during milling.
Zhang, Additive manufacturing of metallic components – process, structure and properties.
Journal of Mechanical Science and Technology 32(10) (2018) 4883-4892
Online since: October 2012
Authors: Zan Wu Tan, Kong Lian Xu, Su Yun Hu
In this paper, finite element method (FEM) simulation was carried out to analyze some factors such as stress distribution, strain distribution, and fillet radius.
Adjustment of the blank holder force can affect formability and dimensional accuracy of stamped parts.
The mechanical properties of the material were determined by conducting tensile test as shown in Table 1.
Mechanical properties of nickel and steel Property item Property value Modulus of elasticity E Posson’s ratio ν Yield strength 254GPa 0.31 241MPa 200 GPa 0.25 300 MPa Nickel Steel Results and Discussion The stress distribution and the strain distribution The results indicate that the nickel-plated steel sheet can be squeezed to the desired shape.
International Journal of Mechanical Sciences, 53 (2011) pp407–416
Online since: November 2014
Authors: Mohd Zulkefli Selamat, Sivaraos Sivaraos, Md Radzai bin Said, Ahmad Rivai, Sivakumar Dhar Malingam, Muhammad Ammar bin Che Mahzan, Mohd Nur Azmi Nordin
Current researches done on palm fiber composite had mainly focused on tensile and flexural properties.
The main factors and parameters used are shown in Table 1.
When performing an experiment, varying the levels of the factors simultaneously rather than one at a time is efficient in terms of time and cost, and also allows for the study of interactions between the factors.
Fig. 3 elucidates response of the significant factors.
,Tensile properties of single oil palm fruit bunch (OPEFB) fibre.
Online since: March 2024
Authors: Antoneta Tomljenović, Ilda Kazani, Jonida Haskurti, Juro Živičnjak, Ivan Kraljević, Zenun Skenderi
It is well known that the air, moisture and heat transfer through the garment are the most important factors in clothing comfort [7].
Future studies will examine the properties of the socks after repeated washing and drying cycles to better understand the impact of domestic care and the change in measured properties on the end user.
Alan, Dimensional and physical properties of socks made from reclaimed fibre, J.
Kerpauskas, Investigation of the thermal properties of socks knitted from yarns with peculiar properties.
Irshad, Analysis of the factors affecting the dimensional stability of socks using full-factorial experimental design method, J.
Showing 8461 to 8470 of 25930 items