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Han-eol Kim, Sang-gui Ha, Hafeezur Rehman and Han-kyu Yoo
Mechanical methods of tunnel excavation are widely used because of their high excavation output, and the selection of appropriate technology depends on ground composition and project-related features. Compared with tunnel boring machines (TBMs) and roadh...
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Matteo Bottin, Silvio Cocuzza and Matteo Massaro
The proposed variable stiffness mechanism will be used in robotic deburring applications, in particular in applications with high and irregular burr profiles, ensuring a precision cut without damaging the cutting tool or the robot.
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Deborah De Oliveira, Milla Caroline Gomes, Aline Gonçalves dos Santos, Marcio Bacci Da Silva
Pág. 195 - 201
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János György Bátorfi, Mátyás Andó
Pág. 136 - 144
The authors analyzed the force and stress values in the simplified cutting model and compared the results with the literature. For the study a 2D model was created in DEFORM 2D finite element software, using the temperature depended multilinear flow...
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Benjámin Borsos, András Csörgo, Anna Hidas, Bálint Kotnyek, Antal Szabó, Attila Kossa, Gábor Stépán
Pág. 44 - 54
Despite crucial efforts invested into computational methods, explicit dynamics simulation of cutting operations may still be unacceptably expensive. Therefore, in many cases a two-dimensional model is considered. Here an overview of the possibilities of ...
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Chen Xu, Yujie Zhu, Danqing Song, Xiaogang Guo, Xiaoli Liu, Enzhi Wang and Runhu Lu
Disc cutters are the dominant tool used in the excavation of hard rock formations in any underground construction application, such as when tunneling using tunnel-boring machines (TBM), as well as in shaft- and raise boring operations. Optimization of th...
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Enze Shao, Qichang Mei, Tongjun Ye, Bálint Kovács, Julien S. Baker, Wei Liu and Yaodong Gu
Interval running methodologies simulate competition and training conditions, with the aim of enhancing an athletes? ability to cope with constant deceleration, acceleration, and sudden changes in direction, as associated athletic and performance challeng...
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Cyril Bourgenot, Valdis Krumins, David G. Bramall and Abdul M. Haque
CubeSats, known for their compact size and cost effectiveness, have gained significant popularity. However, their limited size imposes restrictions on the optical aperture and, consequently, the Ground Resolution Distance in Earth Observation missions. T...
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Jinxing Wu, Lin He, Yanying Wu, Chaobiao Zhou, Zhongfei Zou, Gang Zhan, Tao Zhou, Feilong Du, Pengfei Tian, Zichuan Zou and Xiuhua Zhang
Tool-chip friction increases cutting temperature, aggravates tool wear, and shortens the service life of cutting tools. A micro-groove design of the rake face can improve the wear performance of the tool. In this study, we used the finite element simulat...
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Victoria N. Kyznetsova, Vitaliy V. Savinkin, Tatyana Yu. Ratushnaya, Andrei Victor Sandu and Petrica Vizureanu
The relevance of this research lies in the need to develop a scientifically-grounded methodology for designing the optimal profile of the contact frontal surface of an energy-efficient earthmoving machine operating device, which ensures the redistributio...
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Zhaolong Zhu, Dietrich Buck, Xiaolei Guo, Pingxiang Cao and Mats Ekevad
This paper investigated the machinability of a stone?plastic composite (SPC) via orthogonal cutting with diamond cutters. The objective was to determine the effect of cutting depth on its machinability, including cutting forces, heat, chip formation, and...
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Shuhe Zheng, Chongcheng Chen and Yuming Guo
Aiming at the problems found in grinding Jun-Cao, such as poor grinding effect and high grinding power of mill, this study proposes a blade Jun-Cao grinding hammer based on the traditional hammer mill. With dynamics model analysis, it had better performa...
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Krzysztof Falkowski, Paulina Kurnyta-Mazurek, Tomasz Szolc and Maciej Henzel
New technologies are being developed to elaborate cutting-edge electrical jet engines to replace classical constructions. These new concepts consider the possibility of using electrical machines both as starters and generators, as well as suspension syst...
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Fajar Perdana Nurullah, Abdul Muhyi, Devia Gahana Cindi Alfian
Pág. 299 - 306
The use of composite materials continues to show an increasing trend in various fields such as sports, aviation and the military. This also increases the need for knowledge about the manufacturing process of composites. One of the most widely used compos...
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Fajar Perdana Nurullah, Abdul Muhyi, Devia Gahana Cindi Alfian
Pág. 299 - 306
The use of composite materials continues to show an increasing trend in various fields such as sports, aviation and the military. This also increases the need for knowledge about the manufacturing process of composites. One of the most widely used compos...
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Kazimierz A. Orlowski, Przemyslaw Dudek, Daniel Chuchala, Wojciech Blacharski and Tomasz Przybylinski
Cutting wood with circular saws is a popular machining operation in the woodworking and furniture industries. In the latter sliding table saws (panel saws) are commonly used for cutting of medium density fiberboards (MDF), high density fiberboards (HDF),...
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Mahros Darsin,Timotius Pasang,Zhan Chen
Pág. 23 - 30
This paper concerns on drillability of Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) from the point view of thrust force (Fz) & torque (Mz) using a TiAlN CVD coated carbide tool. The condition of the material was varied with three different heat treatments. Whereas, the ...
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Ahmad Jahanbakhshi
Pág. 171 - 176
The physical and mechanical properties of agricultural products have an effective role in determining the quality of the products, reducing the potential damage caused by transportation and eventually designing the equipment used in the processing of the...
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Feizollah Shahbazi
Pág. 187 - 192
The objective of this research was to determine the effects of moisture content and stem region on some physical and shearing properties of chickpea stems. The experiments were conducted at four moisture contents of 10, 15, 20 and 25% w.b. and at the bot...
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István Biró, Miklós Czampa, Tibor Szalay
Pág. 16 - 22
Machining and more specifically face milling are productive ways of material shaping. Predictive models are very important for effective: quick, easy-to-use and accurate process planning. There are many industrial and scientific researches about modellin...
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