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Online since: November 2014
Authors: R. Rajeswari, R. Jothilakshmi
The unique properties of MNPs which make them to be widely used for medical purposes are their surface to mass ratio, quantum properties, chemical, electrical and magnetic properties.
Various techniques such as Molecular Dynamics (MD), Ab Initio methods and Monte Carlo simulations (MC) are available to obtain the information and predict the mechanical, chemical, electrical, optical and biological properties of nanoparticles [7].
MNPs for drug delivery 2.1.Properties of MNPs.
The size of MNPs also affects drug release.
The magnetic transport and MNP based drug carrier and delivery of drugs at the target site depends on a number of factors including magnetic force, interactivity, inertia, buoyancy, thermal kinetics and other characteristics.
Online since: August 2010
Authors: Z.J. Ma, S.J. Zhang
Damage is considered as weakening of the structure that negatively affects its performance and can be defined as any deviation in structure's original geometric or material properties that may cause undesirable stresses, displacements or vibrations on the structure.
In all the cases damage can severely affect safety and serviceability of the bridges.
Second type Crack of steel and concrete induced by various factors, such as fatigue.
Escamilla-Ambrosio, "Frequency response function shape-based methods for structural damage localization", Mechanical System and Signal Processing, vol.23(4), 2009, p.1243-1259
Qiao, "Novel Laplacian scheme and multi resolution modal curvatures for structural damage identification", Mechanical System and Signal Processing, vol.23, 2009, p.1223-1242
Online since: October 2013
Authors: Yu Min Liu, Qiao Zhi Lu, Yong Zhi Zou, Lan Yao
Table 3 Safety rating of structure Region Upper load-bearing structure Integrity Load- bearing Lateral displacement Load-bearing building envelope Arrangement Support 1~4×A~H D D D D D 1~4×H~P C C C C C 1~4×P~S C C C C C 1~4×S~W B B B C B 5~6×A~C C C C C C 5~6×C~H D D D D D 5~6×H~S C C C C C 5~6×S~W B B B B B Region Building envelope without bearing load Structure Connection Influence 1~4×A~H D D D 1~4×H~P C C C 1~4×P~S C C C 1~4×S~W B B B 5~6×A~C C C C 5~6×C~H D D D 5~6×H~S C C C 5~6×S~W B B B Mechanical Properties of Steel Material.
Researches on the properties of steel after a fire are still in the initial stage and under development yet.
After cold bending 180°C under the normal temperature of steel, each specimen was in good condition, there was no peeling, cracking or any other observed damages, all the specimens satisfied the requirement of impact toughness properties.
The appendix J of CECS252:2009 has provided steel yield strength reduction factor after high temperature.
[8] GB/T 2975-1998, Steel and Steel Products-Location and Preparation of Test Pieces for Mechanical Testing
Online since: July 2017
Authors: Li Yang Xie, Xin Bai, Ming Li, Wei Ying Meng, An Shi Tong
Therefore the mechanical performance requires a better understanding, especially in the presence of open holes.
The mechanical behavior of notched FMLs is very complex due to their specific features like heterogeneity, anisotropy or strain gradients.
As part of the notch sensitivity study, unnotched coupons are also tested to determine the unnotched tensile strength and in-plane laminate mechanical properties in accordance with ASTM D-3039.The damage characteristics are determined after chemical removal of the outer aluminum layers.
These axial splits blunt the notch, hence reduce the stress concentration factor.
Determination of the properties of composite materials thanks to digital image correlation measurements.
Online since: January 2017
Authors: Al Emran Ismail, Hilton Ahmad
However, the drawback is the hydrophilic properties of natural fiber during mixing stage with hydrophobic polymers (more significant with thermoplastic polymers), but with proper pre-treatment these problems can be eliminated.
Some researchers determine fracture energy properties of natural fiber composites by calibrating datasets available from literature and known as apparent fracture energy, however, the value is not considered to be accurate.
End tab with 25 mm length on each side were prepared to prevent the occurrence of slippage during mechanical testing.
The fracture toughness values are largely dependent upon parametric factor such as fiber orientations and crack length.
Fracture toughness value is a material property parameter to describe the ability of a discontinuities plate to resist fracture and failure.
Online since: October 2014
Authors: Georgios Martinopoulos, Alexandros Tsimpoukis, Konstantinos Papakostas
Materials commonly used in urban areas, such as concrete and asphalt, have significantly different thermal properties (including heat capacity and thermal conductivity) and surface radiative properties (albedo and emissivity) than the surface materials of surrounding rural areas.
Furthermore, urban canyons which are characterized by smaller sky view factors and, thus, lower rates of long wave radiation loss during the night, blocking of wind which also inhibits cooling by convection, high air pollution levels which may change the radiative properties of the atmosphere between urban and suburban/rural areas, and the considerable anthropogenic heat emissions produced by energy-intensive human activities (automobiles, air conditioning, industry and other sources) lead to an increase of temperatures in urban areas [1].
Mapping these differences across an urban area, will allow the assessment of weighting factors to the energy calculation results obtained with the use of climatic data which are included in country specific building regulations.
They presumed that the geometry of the streets affects the creation of different microclimatic conditions in the urban canyons.
Tsimpoukis, Calculation of Heating and Cooling Degree-days from records of meteorological stations in the greater metropolitan area of Thessaloniki, Diploma thesis, Mechanical Engineering Department, Aristotle University of Thessaloniki, 2014 (in Greek).
Online since: June 2013
Authors: Takashi Iizuka, Shohei Kajikawa
To date, however, detailed research into injection molding using heat-treated wood biomass has not been conducted, and for injection molding of wood biomass, good material injectability, and good mechanical properties of molded products all remain targets to be realized.
From these results, we investigated the changes in the injectability of powder as well as the mechanical properties of products formed from wood powder by looking at the difference in heat treatment parameters.
It is considered that the factor that improves flowability is different from that affecting the hardness of compacted products with respect to the heat treatment of powder.
Kikata, Effect of wood species on thermal flow behavior and physical properties of thermoplastic moldings, Wood Sci Technol. , 46 (2012), 419-429
Okuma, Development of boards made from oil palm frond II: properties of binderless boards from stem-exploded fibers of oil palm frond, J.
Online since: July 2006
Authors: Andrew Greene, Adam Pitman, Manuel A. Salazar-Guapuriche, Y.Y. Zhao
The ageing conditions and therefore the mechanical properties of the components can be predicted more accurately by the simultaneous combination of hardness and conductivity values.
For example, the quench factor analysis model has been applied successfully to the prediction of post-quench physical properties in aged Al alloys [1].
Rosen et al [3] used electrical conductivity to study the changes in the mechanical properties during the age hardening process in AA 2024 and evaluated quantitatively the extent of removal of the minor constituents Cu and Mg from the solid solution.
Brasche et al [5] and Koch and Kolijn [6] also studied the properties, such as strength, fracture toughness and stress corrosion cracking, non-destructively.
Aluminium: Properties and Physical Metallurgy, 1st ed.
Online since: July 2020
Authors: Retno Wulandari, Galih Adhi Kurniawan, Agus Dwi Putra, Andoko Andoko
In general, the position, extension, and complications of the dislocation are affected by the position of the blow.
This occurrence is often generated by several factors, namely [28]: (1) Uneven lattice distortion, which can be caused by nanocrystal surface tension, crystalline morphology, and interstitial impurities. (2) Dislocations, (3) Border domains between phases, which are formed at the time of material structure preparation that undergoes a transformational disturbance.
Ma, “Surface properties of Mg-Gd-Zn-Zr alloy modified by Sn ion implantation,” Mater.
Vida et al., “Directionally solidified dilute Zn-Mg alloys: Correlation between microstructure and corrosion properties,” J.
Brnić, “Low cycle fatigue and mechanical properties of magnesium alloy Mg–6Zn–1Y–0.6Ce–0.6Zr at different temperatures,” Mater.
Online since: August 2005
Authors: S.L. Ko, Jung Il Park, Y.H. Hanh, Yuri Mikhailovich Baron
Baron 4 1.2.3 Dep. of Mechanical Design and Production Eng., Konkuk University, Seoul, Korea Center for Advanced E-System Integration, Konkuk Univ. 2 Corresponding author, slko@konkuk.ac.kr, (82)2-450-3465 4 St.Petersburg State Polytech University, St.Petersburg, Russia Keywords: magnetic-abrasive finishing, burr, deburring, magnetic inductor, abrasive, electric gun.
It is verified the chemical composition of surface is not affected by the powder composition when the proper powder are used with coolant.
MAF is based on the magnetization property of ferromagnetic iron and the machining property of abrasives which is made of Al2O3 and SiC.
These important factors depend on the design of the magnetic inductor and the property of the magnetic powder.
These impurities are imbedded into surface as result of chemical and mechanical interaction.
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