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Online since: November 2022
Authors: Ram Subbiah, M. Jeyakumar, R. Sanjeev Kumar, M. Sureshkumar, Sampath Boopathi
The damping and mechanical properties of oil palm and jute fiber epoxy product were investigated by varying fiber contents.
Dynamic mechanical properties (damping factor, loss and storage modulus) have been improved by increasing fiber content and hybridization with epoxy resin [22].
The influence of various operating factors on the drilling operations of NFRPC has been discussed in numerous research activities.
These factors have been affected by drilling speed, Feed rate, the diameter of the drill bit, and drill angle [40].
The jute fiber had been recommended in many research activities to obtain good mechanical properties and thermal stability
Dynamic mechanical properties (damping factor, loss and storage modulus) have been improved by increasing fiber content and hybridization with epoxy resin [22].
The influence of various operating factors on the drilling operations of NFRPC has been discussed in numerous research activities.
These factors have been affected by drilling speed, Feed rate, the diameter of the drill bit, and drill angle [40].
The jute fiber had been recommended in many research activities to obtain good mechanical properties and thermal stability
Online since: August 2019
Authors: S. Muthukumaran, D. Srija, P. Suresh, R. Dinesh Kumar
The Chemical composition and mechanical properties were analyzed for the base material of AA2024 and AA6061 as shown in Table 1 and Table 2.
Alloy (wt.%) Magnesium Manganese Copper Iron Silica Chromium Zinc Aluminium AA2024 1.5 0.6 4.35 0.5 0.5 0.10 0.25 remaining AA6061 1 0.15 0.27 0.7 0.6 0.19 0.6 remaining Table 2 Mechanical properties of 2024 and 6061 parent metals [12].
Nazar Abdulwadood, Burak Sahin, Nihat Yildirim, Effect of welding parameters on the mechanical properties of dissimilar aluminum alloys 2024-T3 to 6061-T6 joints produced by friction stir welding.
Muthukumaran, Investigation on the Mechanical and Wear Properties of Aluminium–Magneisum Bimetallic Composite Fabricated by Friction Stir Processing Technique , Trans Indian Inst Met (2018) 71(5):1247–1255 [3].
Muthukumaran, Effect of First and Second Passes on Microstructure and Wear Properties of Titanium Dioxide-Reinforced Aluminum Surface Composite via Friction Stir Processing, Arabian Journal for Science and Engineering 12 (2018) 12-20 [10].
Alloy (wt.%) Magnesium Manganese Copper Iron Silica Chromium Zinc Aluminium AA2024 1.5 0.6 4.35 0.5 0.5 0.10 0.25 remaining AA6061 1 0.15 0.27 0.7 0.6 0.19 0.6 remaining Table 2 Mechanical properties of 2024 and 6061 parent metals [12].
Nazar Abdulwadood, Burak Sahin, Nihat Yildirim, Effect of welding parameters on the mechanical properties of dissimilar aluminum alloys 2024-T3 to 6061-T6 joints produced by friction stir welding.
Muthukumaran, Investigation on the Mechanical and Wear Properties of Aluminium–Magneisum Bimetallic Composite Fabricated by Friction Stir Processing Technique , Trans Indian Inst Met (2018) 71(5):1247–1255 [3].
Muthukumaran, Effect of First and Second Passes on Microstructure and Wear Properties of Titanium Dioxide-Reinforced Aluminum Surface Composite via Friction Stir Processing, Arabian Journal for Science and Engineering 12 (2018) 12-20 [10].
Online since: May 2015
Authors: Jozef Kúdela, Martina Štrbová, Daniela Tesařová
Introduction
The quality of wood surface treatment with coating materials depends on the structure and properties of the coating material used, on the structure and surface properties of the wood substrate and on the interactions between these two environments.
The concern is about interactions among unsaturated force fields across the phase boundary between wood and coating materials as well as about the effects of a number of secondary factors [1,2].
Therefore, the interactions of these coatings with wood, affecting their adhesion to wood are needed to recognize.
The data summarized in Table l demonstrate that the surface free energy values obtained did not only result from the wood surface properties but that they were also influenced by the chemical structure of the liquid standard used.
Blanchet, UV-waterborne polyurethane-acrylate nanocomposite coatings containing alumina and silica nanoparticles for wood: mechanical, optical, and thermal properties assessment, J.
The concern is about interactions among unsaturated force fields across the phase boundary between wood and coating materials as well as about the effects of a number of secondary factors [1,2].
Therefore, the interactions of these coatings with wood, affecting their adhesion to wood are needed to recognize.
The data summarized in Table l demonstrate that the surface free energy values obtained did not only result from the wood surface properties but that they were also influenced by the chemical structure of the liquid standard used.
Blanchet, UV-waterborne polyurethane-acrylate nanocomposite coatings containing alumina and silica nanoparticles for wood: mechanical, optical, and thermal properties assessment, J.
Online since: July 2008
Authors: Luis Héctor Hernández-Gómez, G. Urriolagoitia-Calderón, E.A. Merchán-Cruz, Juan Alfonso Beltrán-Fernández, G. Urriolagoitia-Sosa, A. González-Rebatú, M. Dufoo-Olvera, R.G. Rodríguez-Cañizo
Conversely, it has to be considered that
cortical and trabecular bone densities vary from one patient to another due to a number of factors,
which can influence the fixation conditions of the screws.
Materials and Methods The cervical plate used on this work (Fig. 3) is made of a Titanium alloy Ti-6A1-4V, with the following mechanical properties provided by the manufacturer: E = 102 GPa, υ = 0.30, Sy = 827 MPa.
Fig. 4 CAD model of the Cervical vertebrae C3- C5 In accordance to the cervical plate manufacturer and technical information, this bend does not affect the mechanical properties of the plate.
It is also considered that C4 is replaced by a bone graft with the same mechanical properties used in the rest of the vertebrae and being adjacent to the superior and inferior surfaces of C3 and C5 respectively [9].
Even though the 3-D model does not consider the thread geometry of the screws, the CAD software used to model these elements (Mechanical Desktop) allows applying mechanical properties to the cylinder so it can represent the fixation properties of a screw, considering the type of thread, pitch, and number of threads.
Materials and Methods The cervical plate used on this work (Fig. 3) is made of a Titanium alloy Ti-6A1-4V, with the following mechanical properties provided by the manufacturer: E = 102 GPa, υ = 0.30, Sy = 827 MPa.
Fig. 4 CAD model of the Cervical vertebrae C3- C5 In accordance to the cervical plate manufacturer and technical information, this bend does not affect the mechanical properties of the plate.
It is also considered that C4 is replaced by a bone graft with the same mechanical properties used in the rest of the vertebrae and being adjacent to the superior and inferior surfaces of C3 and C5 respectively [9].
Even though the 3-D model does not consider the thread geometry of the screws, the CAD software used to model these elements (Mechanical Desktop) allows applying mechanical properties to the cylinder so it can represent the fixation properties of a screw, considering the type of thread, pitch, and number of threads.
Online since: June 2005
Authors: Sam Hong Song, Cheol Woong Kim, Dong Joon Oh
Many in-depth researches on mechanical properties by fiber
orientation of the existing the fiber reinforced composites have been carried out [1~3].
The regular relationship between the interlaminar stress and strain distribution and the fatigue life has not been observed because the delamination was greatly affected by the fiber orientation.
The stress transfer from the crack tip of Al alloy sheet to the fiber was accomplished along the fiber orientation and it greatly affected the delamination pattern.
The da/dN and ∆K relationship due to the fiber orientation The effect of the fiber orientation on the crack growth rate (da/dN) and stress intensity factor range (∆K) will definitely examine.
[5] Takamatsu T., Matsumura T., Ogura N., Shimokawa T., Kakuta Y., "Fatigue Crack Growth Properties of a GLARE3-5/4 Fiber/Metal Laminates," Engineering Fracture Mechanics, Vol. 63 (1999), pp. 253~272.
The regular relationship between the interlaminar stress and strain distribution and the fatigue life has not been observed because the delamination was greatly affected by the fiber orientation.
The stress transfer from the crack tip of Al alloy sheet to the fiber was accomplished along the fiber orientation and it greatly affected the delamination pattern.
The da/dN and ∆K relationship due to the fiber orientation The effect of the fiber orientation on the crack growth rate (da/dN) and stress intensity factor range (∆K) will definitely examine.
[5] Takamatsu T., Matsumura T., Ogura N., Shimokawa T., Kakuta Y., "Fatigue Crack Growth Properties of a GLARE3-5/4 Fiber/Metal Laminates," Engineering Fracture Mechanics, Vol. 63 (1999), pp. 253~272.
Online since: July 2016
Authors: Yan Xiao, Bo Shan, Wei Liang Zhang, Bo Liu
The shear-relative slip curves were measured and all the relevant mechanical properties such as slip moduli and shear capacities were calculated.
GluBam owns special laminate structure of bamboo fibers and excellent mechanical properties compared with bamboo veneer.
The main mechanical properties of GluBam are almost the same as GluLam which was a type of engineered lumber product using structurally graded timber laminations [2].
The shear-relative slip curves were measured and all the relevant mechanical properties, such as slip moduli and shear capacities were calculated.
Experimental research on mechanical properties of GluBam [J].
GluBam owns special laminate structure of bamboo fibers and excellent mechanical properties compared with bamboo veneer.
The main mechanical properties of GluBam are almost the same as GluLam which was a type of engineered lumber product using structurally graded timber laminations [2].
The shear-relative slip curves were measured and all the relevant mechanical properties, such as slip moduli and shear capacities were calculated.
Experimental research on mechanical properties of GluBam [J].
Online since: January 2020
Authors: Wen Ting Sun, Qiu Ying Jia, Shuang Xi Liu, Xu Gao, Liang Liang Li, Chang Xin Hu
PES membrane has incomparable advantages over other membrane materials for its excellent mechanical property, remarkable oxidation stability and thermal stability[2;3].
However, as membrane products from traditional non-solvent induced phase separation is applied in the field of food, membrane is polluted quickly because irreversible embedded pollution is liable to occur due to high sinuosity of pore structure, affecting service life of membrane products [7-9].
Because solidification process of hollow fiber membrane and foaming pore-forming process occur synchronously, foaming pore-forming only makes the internal pore structure more connective without affecting pore structure on the surface, effectively guaranteeing mechanical property of the obtained hollow fiber membrane and avoiding the generation of defect.
Fig. 7 The influence of different coagulation bath on mechanical property of membrane filament The influence on membrane pore size.
The mechanical property of membrane filament is guaranteed while cross section of hollow fiber membrane has a wedged shape and runs through even macroporous structure of internal and external surface
However, as membrane products from traditional non-solvent induced phase separation is applied in the field of food, membrane is polluted quickly because irreversible embedded pollution is liable to occur due to high sinuosity of pore structure, affecting service life of membrane products [7-9].
Because solidification process of hollow fiber membrane and foaming pore-forming process occur synchronously, foaming pore-forming only makes the internal pore structure more connective without affecting pore structure on the surface, effectively guaranteeing mechanical property of the obtained hollow fiber membrane and avoiding the generation of defect.
Fig. 7 The influence of different coagulation bath on mechanical property of membrane filament The influence on membrane pore size.
The mechanical property of membrane filament is guaranteed while cross section of hollow fiber membrane has a wedged shape and runs through even macroporous structure of internal and external surface
Online since: January 2011
Authors: Rong Jun Zhao, Xian Bao Cheng, Wei Wei Shangguan
Nowadays there are two methods to evaluate the mechanical properties of wood fiber: extension test of single fiber and zero-span tensile technique.
The single fiber extension test is a direct method to measure the mechanical properties of fibers, but it has some obvious drawbacks, for instance, tedious, big workload, and just demonstrate the fiber’s own mechanical properties, can not reflect the bonding strength between fibers.
Later on the Akker’s group[1] studied the parameters affecting the test and proposed a model for it.
Recently, this efficient micromechanical test technology has been introduced into the research area of measuring the mechanical properties of wood cell wall.
Factors affecting Longitudinal Tensile Strength of Softwood Tracheids Investigated with Zero-span Tension.
The single fiber extension test is a direct method to measure the mechanical properties of fibers, but it has some obvious drawbacks, for instance, tedious, big workload, and just demonstrate the fiber’s own mechanical properties, can not reflect the bonding strength between fibers.
Later on the Akker’s group[1] studied the parameters affecting the test and proposed a model for it.
Recently, this efficient micromechanical test technology has been introduced into the research area of measuring the mechanical properties of wood cell wall.
Factors affecting Longitudinal Tensile Strength of Softwood Tracheids Investigated with Zero-span Tension.
Online since: December 2006
Authors: Marita Yusrini, Idris Yaacob Iskandar
Films can be electroplated with excellent magnetic
properties and plating cells are relatively inexpensive.
Recently, much attention has been paid to the study of nanocrystalline nickel - iron alloys due to their interesting mechanical and magnetic properties [2,3].
Coercivity is a factor that describes how hard or soft a magnet is.
The plating current densities influence the grain size, composition, and consequently affect the magnetic properties of the plated layer.
Nickel-iron films showed excellent soft magnetic properties with high saturation magnetization.
Recently, much attention has been paid to the study of nanocrystalline nickel - iron alloys due to their interesting mechanical and magnetic properties [2,3].
Coercivity is a factor that describes how hard or soft a magnet is.
The plating current densities influence the grain size, composition, and consequently affect the magnetic properties of the plated layer.
Nickel-iron films showed excellent soft magnetic properties with high saturation magnetization.
Online since: June 2019
Authors: Yuriy Vovk, Maria Sokil, Mykhaylo Levkovych, Oleg Tson, Dmytro Kondratyuk, Viktor Dmytrenko, Oleg Lyashuk
Thus, main characteristics of the mechanical system under investigation and the whole range of forces estimation, system parameters and boundary conditions affecting the dynamic process are shown on Fig. 1.
Elastic properties of an auger screw model under study are depicted by applying the quasi-linear law of elasticity , where - the normal tension in a cross-section of the system model, and - the relative strain and its rate; - a feature that indicates the deviation of elastic model material properties from the linear law; - a small parameter, which indicates a small deviation from the specified properties of the linear law.
Fig. 4 shows the response surfaces of value Q change caused by simultaneous change of two factors for the feed mix: (а) - ; (b) - ; (c) - ; (d) - ; (e) -; (f) - of geometrical and structural parameters whilst feed mix making by spring-actuated tool at the tool rotation frequency (10, 12, 15, 20 rev/с), depth of the tool screw hole within the limits m and with different steps of the tool m and crest width of elastic element m.
Response surfaces of dependencies: (а) - ; (b) - ; (c) - ; (d) - ; (e) -; (f) - We found out that the most important factors affecting the output are the tool rotation frequency, its step and width of the elastic element crest and less important is the depth of the tool screw hole .
New trends in mechanical engineering and materials, Book Series: Applied Mechanics and Materials. 251 (2013) 101-103
Elastic properties of an auger screw model under study are depicted by applying the quasi-linear law of elasticity , where - the normal tension in a cross-section of the system model, and - the relative strain and its rate; - a feature that indicates the deviation of elastic model material properties from the linear law; - a small parameter, which indicates a small deviation from the specified properties of the linear law.
Fig. 4 shows the response surfaces of value Q change caused by simultaneous change of two factors for the feed mix: (а) - ; (b) - ; (c) - ; (d) - ; (e) -; (f) - of geometrical and structural parameters whilst feed mix making by spring-actuated tool at the tool rotation frequency (10, 12, 15, 20 rev/с), depth of the tool screw hole within the limits m and with different steps of the tool m and crest width of elastic element m.
Response surfaces of dependencies: (а) - ; (b) - ; (c) - ; (d) - ; (e) -; (f) - We found out that the most important factors affecting the output are the tool rotation frequency, its step and width of the elastic element crest and less important is the depth of the tool screw hole .
New trends in mechanical engineering and materials, Book Series: Applied Mechanics and Materials. 251 (2013) 101-103