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Online since: June 2024
Authors: Sugeng Winardi, Mohammad Irwan Fatkhur Rozy, K. Kusdianto, Suci Madhania, Jauharatul Wardah
Velo-Gala et al. (2013) when exposed to UV light, activated carbon exhibits photoactive and semiconductor properties [14].
On the other hand, Cruz et al, (2017) mentioned that producing composite materials with combined or synergistic features like high surface area, mechanical strength, thermostability and insolubility, antibacterial capacity, and photocatalytic properties will be possible by growing semiconductors onto activated carbon [2].
Irradiation time, light intensity source, and MB concentration are factors that can affect MB photodegradation [27].
Arya et al., “Review—Influence of Processing Parameters to Control Morphology and Optical Properties of Sol-Gel Synthesized ZnO Nanoparticles,” ECS J.
Hameed, “Parameters affecting the photocatalytic degradation of dyes using TiO2-based photocatalysts: A review,” J.
Online since: March 2007
Authors: Jean Louis Soubeyroux, Stéphane Gorsse, G. Orveillon
The ODF model, synthesized alloys by mould casting, characterization by X-ray diffraction and DSC techniques are presented. 1.Introduction Bulk metallic glasses (BMG) exhibit particularly attractive mechanical properties like high stresses to fracture and large elastic strains.
It is also important to produce alloys with a high critical diameter (or thickness) in order to produce thick pieces with the vitrous characteristics responsible of the good mechanical properties.
There is a lack of data on the surface energies; however, the driving forces are the main factor that affects nucleation kinetics [10,11] and can be calculated if the Gibbs free energies of the crystalline phases are known.
Concerning the particular alloys obtained in this study, the best compositions studied are for a rare earth content of 11 or 12%, they present a high crystallization temperature (≈ 396 K for Y, ≈ 385 K for Gd), a high melting temperature (≈ 730 K for Y, ≈ 708 K for Gd), a large ΔT (75-70 K) and a high γ value (> 0.41), samples with 10 millimeter diameter are almost fully amorphous with the presence of a minor crystallized fraction that could have a good influence on mechanical properties.
Mechanical properties under compression at room temperature and in the ΔT range are under investigations.
Online since: May 2011
Authors: Wen Pan, Liang Bin Qin, Xiao Dong Yang, Yu Bai, Zhong Tao
The mechanical properties of the specimens are obtained through test.
Introduction For the advantages of the raw soil building, such as available local materials, adaptation to local conditions, simple technology, low cost and good thermal insulation properties, it is widely constructed in the majority of towns and villages in western China, especially in the remote mountain areas.
The strength test method of adobe and mud is designed in reference to "Test Method for the Bricks of Building Walls" (GB/T2524-2003) [2] and "Test Method for Key Properties of Constructional Mortar" (JGJ70-90) [3].
The influence which pine affect compressive strength of adobe and the optimal ratio of pine and are obtained by statistical methods .
(1) Comparing with the wall building with the traditional method, the improved earth wall significantly increases the failure load and the average load reaching by 124%, strengthens the stability and enhances the ductility factor
Online since: August 2015
Authors: Piyalak Ngernchuklin, Jung Ho Ryu, Arjin Boonruang, Chalearmchai Jeerapan, Pracha Laoauyporn, Sittichai Kanchanasutha
It was shown that the constrained layer either soft PZT or hard PZT affected various properties including the dome geometry, the strain-E-field response, and the displacement hysteresis loop.
Recently the development of single crystal relaxor ferroelectrics based on PMN-PT and PZN-PT) exhibits superior electromechanical properties and strains over 1 % compared to PZT [3].
The measured effective electrical properties (d33eff and K33eff) were lower than the calculated values.
Bryant, Thin-layer composite unimorph ferroelectric driver and sensor properties, Materials Lett. 35 (1998) 39-49
[10] S.A.Wise, Displacement properties of RAINBOW and THUNDER piezoelectric actuators, Sens Actuators A. 69 (1998) 33-38
Online since: February 2011
Authors: B.T. Hang Tuah Baharudin, Shamsuddin Sulaiman, Mohd Khairol A. Arifin, Tang Sai Hong, S. Sreenivasan
Sulaimanb, B.T.H.T Baharuddin, Tang Sai Hong and S.Sreenivasanc Department of Mechanical and Manufacturing Engineering Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia akhairol@eng.upm.edu bsuddin@eng.upm.edu.my and cs_sarma82@yahoo.com Keywords: Bulk Moulding Compounds, Thermoset, Injection Moulding and Autodesk Moldflow Plastics InsightÒ.
There was an average variance of 7% which was thought to be acceptable as the simulation considers the ideal condition, where as there may be external factors such as the machine wear and tear during the actual moulding of the part.
These fibre reinforcements help increase certain properties like tensile strength, heat resistance, arc resistance etc.
Using measured physical and chemical properties of the RIM system; mould-ability can be determined in advance.
The study assumes that the percentage of fibre content does not affect the results.
Online since: February 2012
Authors: Michele Monno, Matteo Strano, Andrea Rossi
With this respect, the epistemic variability in stochastic variables may only influence the value of the optimal solution, but will not affect the probability of failure.
Equation (8) can be simplified as: , (9) where gc and gt are constant values, expressed in [€/mm2] or [MJ/mm2], which might be affected by epistemic uncertainty.
Fig. 3: Fatigue limits (safety factor=2) of typical steel for tensioning wires and cast iron for frames.
On the contrary, when the optimization deals with forming processes rather than forming machines, the material properties or the model itself are the main concern with respect to uncertainty.
Chinese Journal of Mechanical Engineering (2006) 42:03
Online since: June 2014
Authors: Ming Liu, Tao Feng
Retrogradation properties of bread crumb A differential scanning calorimeter (Q2000 Model Differential Scanning Calorimeter; DSC-TA Instruments, New Castle, DE, USA) was used to study the retrogradation properties of bread during storage.
The endothermic properties were analyzed by the software supplied with the instrument.
Rheological properties of rice starch–Mesona Blumes gum mixtures.
Assessment of hydrocolloid effects on the thermo-mechanical properties of wheat using the Mixolab.
Impact of different baking processes on bread firmness and starch properties in breadcrumb.
Online since: May 2018
Authors: Ming Zhi Zhu, Fei Yang
Bone scaffolds not only support bone at initial implantation and stimulate new bone tissue ingrowth and become completely integrated into the native tissue, but also achieves enough mechanical strength and cell-material interaction properties [5].
Osteogenic properties of scaffolds is known to be influenced by scaffold parameters such as mean pore size, porosity, pore interconnectivity, mechanical strength and elastic modulus of the base materials [10,11,12].
The sintering scheme, structural, mechanical and biological properties of the β-TCP scaffolds fabricated were investigated.
In contrast, the β-TCP scaffolds fabricated in this study had higher compressive strength, satisfying the requirement of the bone tissue scaffolds microstructure and mechanical properties, which was beneficial to bone repair and bone tissue ingrowth.
[25] C.H.Liu, Preparation and properties of porous scaffolds for calcium phosphate biocerates in bone tissue engineering, Master dissertation, Southeast University, China, 2004
Online since: October 2008
Authors: Yan Ming Quan, Jing Zhao, Y.S. Le
Le 1,c 1 College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China a meymquan@scut.edu.cn, b zhaojing8319@126.com, cangel_tree@sina.com Keywords: Cutting temperature, Natural thermocouple, Online measurement, Real-time monitoring Abstract.
Take the monitoring based on cutting force measurement for example, because of the installation condition limitation of dynamometers, it is used only in laboratorial commonly; there are a lot of factors causing cutting tool vibrations and signal noises in machining process; it is difficult to establish some definite relations between the tool performance, the machined surface quality and the signal characteristics of machine spindle power, or vibration and acoustic emission.
Cutting heat and its induced temperature affect cutting tool performance and machined surface quality directly.
The modified spindle structure is shown in Fig. 1. 1. fixed wire terminal 2. plastic plug 3. sealing cover 4. copper cup 5. insulator 6. mercury 7. pulling shaft nut 8. wire 9. spindle pulling shaft Fig. 1 The structure of spindle pulling shaft and current collector The most important property of the current collector is the magnitude of auxiliary frictional potential caused by the disturbance of the fixed wire in the mercury.
Changho: JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing, Vol. 46 (2003), pp. 314
Online since: December 2012
Authors: Andreas Killinger, Rainer Gadow, Miriam Floristán
Many of the coating properties, such as hardness, adhesion, tribological behaviour or formation of micro cracks, depend not only on the material inherit properties, but also on the thermal history of the component.
Table 2: Mechanical and thermo physical properties of substrate and coating materials (b: bulk material; APS: sprayed material) [24].
The thermal history of the composite influences coating properties such as porosity, residual stresses, micro crack formation, etc.
By applying air cooling, the crack formation was reduced and controlled, being the porosity the parameter affecting the coating electrical resistivity, as it can be seen in Fig. 18.
However, if the requirements regarding electrical properties are fulfilled by the one-layer systems, these are less time consuming during production.
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