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Online since: November 2025
Authors: Edward Missanjo, Henry Kadzuwa, Kamuhelo Lisao, Epafras Andreas
In addition, forestry materials are also being used in consumer goods, appreciating their aesthetics and performance properties.
Thus, sustainable forestry practices ensure ecological integrity and natural forest regeneration [13, 14]. 3.1.2 Bamboo Bamboo grows very fast with great mechanical properties.
Efforts to regulate and promote sustainable logging practices have been undermined by illegal operations, affecting the long-term availability of quality wood [25]. 3.5.2.
Challenges with Material Performance and Durability Forestry materials like wood and bamboo are prone to degradation due to moisture, pests, and environmental factors.
Kanoungo, The effects of surface treatment methods on properties of recycled concrete aggregates, Material Today and Proceedings, 50, (2022), 1848–1852
Online since: June 2012
Authors: Shan Lu, Jing Ping Liu, Bao Hua Wang
Drum is the main component of belt conveyor, its service life seriously affect the normal operation and production of belt conveyor.
Rollers structure determines loading quantity and quality of the conveyor belt and the roller bearing size and properties to a great extent.
Service life is not less than 50000 hours, rotation resistance factor is less than0.010, and torsion angle of roller shaft is less than 10'.
Colliery Mechanical & Electrical Technology.
Colliery Mechanical & Electrical Technology.
Online since: June 2019
Authors: Kay André Weidenmann, Vincent Sessner
However, the strong temperature dependency of the mechanical properties of the elastomer, requires the characterization also at different ambient temperatures.
A detailed description of the lay-up sequences and material properties can be found in [9].
At – 45 °C a strong strain rate dependency of the elastomers properties occurs.
It is assumed that the mechanical properties of the laminate are mostly affected by the change of the elastomer modulus, as the glass transition of the epoxy at Tg=135 °C does not significantly decrease the modulus of CFRP at 80 °C.
Weidenmann, Characterization of interface properties of Fiber-Metal-Laminates (FML) with optimized surfaces, in: Hausmann, Siebert (Hg.) 2016 – 2.
Online since: June 2014
Authors: Huda Abdullah, Sahbudin Shaari, Mohd Syafiq Zulfakar, Mohammad Tariqul Islam, Wan Nasarudin Wan Jalal, Zalita Zainuddin
Structural properties was investigated by atomic force microscopy (AFM) and x-ray diffractometer (XRD).
Each method has unique properties that can be used during the experimental.
Some researchers had studied the microwave dielectric properties of ZnAl2O4 ceramics and found that it has low dielectric constant (εr) and high quality factor (56,300 GHz) and this properties can be proposed as an excellent microwave substrate material [18].
Cordaro, Optical Properties of Zinc Aluminate, Zinc Gallate, and Zinc Aluminogallate Spinels, J.
Hong, Microwave dielectric properties of Ca2P2O7, J.
Online since: October 2009
Authors: Jin Chun Song, Zhi Wei Zhang, Jian Wen Chen, L.B. Jia, C.J. Pang
Zhang 1 and C.J.Pang2 1 School of Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning, China, 110004 2 College of Applied Chemistry, Shenyang Institute of Chemical Technology, Shenyang, Liaoning, China, 110142 a jwchen@mail.neu.edu.cn, bjlb_0700822@live.cn, c jchsong@mail.neu.edu.cn Keywords: Oil mist lubrication, Oil mist density, Plane polarized light, Optical rotation principle Abstract.
The density of oil mist in this paper is an important factor of oil mist lubrication technology, according to which the effect of lubrication will be known and from which the study on atomization effect will also benefit.
Since the effect of oil mist lubrication can be dramatically affected by oil mist density, this property of oil mist as well, consequently, is considered as a key factor of oil mist lubrication technique.
Online since: June 2010
Authors: Ho Yeon Song, Young Hee Kim, Jyoti M. Anirban, In Seon Byun, Kyung A Kwak, Byong Taek Lee
To increase the mechanical and osteoconductive properties, the granules and spongy type porous bone graft substitutes were prepared by fibrous monolithic process and polyurethane foam replica methods, respectively.
Xiaoming Li et al. suggested that modification in surface microstructures that affect and enhance surface are can enhance osteoinductivity in calcium phosphate ceramics due to their protein adsorption capability onto surfaces [9].
Therefore, the infiltration of cells into the ceramic scaffold, the supply of nutrients and oxygen and washing out the cellular wastes are important factors for developing a porous scaffold for bone replacement [1].
Scaffold prepared by PUF methods are largely applicable for spongy bones due to their interconnected pore system and low fracture toughness and mechanical properties.
Online since: October 2011
Authors: Bibhuti B. Sahoo, Niranjan Sahoo, Ujjwal K. Saha
The important properties of fuels utilized in the experiments are presented in Table I.
Important Fuel Properties Properties Diesel JOME Biogas Chemical formula C12H26 --- 48% CH4; 42% CO2 by volume Density (kg/m3), 1 atm, 150 C 850 880 1.27 Lower heating value (MJ/kg) 42 38 15.74 Flame velocity (m/s) [4] [11] 0.3 --- 0.25 Cetane number [14] 45 – 55 50 --- Auto-ignition temperature (K) [11] [14] 553 573 923 Stoichiometric A/F (kg/ kg) 14.92 N/A 5.36 Energy density (MJ/Nm3) 2.82 N/A 2.87 The engine was tested for reference results with neat diesel fuel followed by dual fuel experiment.
Results and Discussion Mechanical Parameter Figure 2.
All these factors collectively reduced the friction power consumption (about 1 to 2 kW) of the dual fuel operation as compared to diesel mode (Fig. 3).
At low loads, these factors led to higher HC and CO emissions for the biogas fueling dual fuel mode.
Online since: September 2014
Authors: Armin Lechler, Alexander Verl, Karl Heinz Wurst, Christoph Batke
The new additional demand is therefore the adaptability in regard to component size and process properties.
For enhancing the work piece properties, their material can be fibre-reinforced.
With rapid clamping elements, properties of basic modules (e.g. rigidities, geometry and thermal behaviour) can be varied through exchanging frame elements.
However, the decisive factors for selecting such a production method are the properties of the resulting PCM.
Figure 3: Scheme of monolithic designs and interfaces Special functions and properties.
Online since: March 2025
Authors: Hideharu Kato, Shigehiko Sakamoto, Yuno Maeda, Ryuta Sato, Yukitoshi Ihara
Influence of Axis Configuration in 5-Axis Control Machining Center on Geometric Error of Cubic Machined Surfaces Yuno Maeda1,a*, Shigehiko Sakamoto2,b , Hideharu Kato2,c , Ryuta Sato3,d and Yukitoshi Ihara4,e 1Graduate School of Engineering, Kanazawa Institute of Technology, 3-1 Yatsukaho, Hakusan, Ishikawa 924-0838, Japan 2Department of Mechanical Engineering, Kanazawa Institute of Technology, 3-1 Yatsukaho, Hakusan, Ishikawa 924-0838, Japan 3Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan 4Department of Mechanical Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan ac1052097@planet.kanazawa-it.ac.jp, bsak@neptune.kanazawa-it.ac.jp, chkato@neptune.kanazawa-it.ac.jp, dryuta.sato@mae.nagoya-u.ac.jp, eyukitoshi.ihara@oit.ac.jp Keywords: 5-Axis Machining Centers, Cubic-Machining, Structure Error, Form-Shaping-Theory, Mechanical Structure Abstract.
However, static and dynamic error factors affect the machining process in actual machining, (a) Cubic-machinig (c) Top surface on the cube (e) Side surfece on the cube (b) Cubic-machining (d) Top surface sections (f) Side surfece sections on the 5-axis MC Fig. 1 Surfaces on the machined cube and the nine surfaces created as the machined surface will have height differences as machining errors.
Rotating the rotational axis B-axis to change the tool posture changes the orientation of each error factor relative to the workpiece coordinate system.
(3) Tool posture has only a small effect on the machined surface properties, and it is possible to measure the height difference between each machined surface.
Online since: May 2016
Authors: Guang Ming Zhu, C. Zhang, P.G. Xu, G.C. Bai
Bai1,d 1School of Mechanical Engineering, Shandong Uninversity of Technology, Zibo, P.R.China azgm@sdut.edu.cn, bkaikai19880407@163.com, c1127725051@qq.com, d1360666754@qq.com Key words: twin-roll strip casting, heat flux, influencing factors, experimental study Abstract: Heat flux between molten metal and casting rolls plays a key role in improving the quality of the strip, studying on the interfacial heat flux has very important theoretical significance and practical value.
Because of the good flowing property of liquid, there is a sufficient contact between solid and liquid, so the heat flux increases quickly.
In another way, the higher of molten aluminum temperature, the greater the thermal shrinkage solidification shell will be, which resulting in the shrinkage of solidification shell air gap increase, then the air gap will reduce the heat transfer rate and impede heat transfer and affect the contact interface heat transfer coefficient.
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