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Journal articles on the topic 'Machine-tools of turning group'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Klymenko, Galyna, Yana Vasylchenko, Yevhen Reva, Dmytro Korchma, and Roman Boroday. "DETERMINATION OF THE STABILITY PERIOD OF TURNING CUTTERS FOR HEAVY MACHINE TOOLS." Cutting & Tools in Technological System, no. 101 (December 7, 2024): 95–102. https://doi.org/10.20998/2078-7405.2024.101.09.

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To determine the optimal cutting modes under conditions of increased requirements for the stability of technological processes, it is necessary to take into account the value of the tool life with a given probability. In this paper, the stability dependence for prefabricated cutters used on heavy machine tools with maximum diameters Dmax = 1250-2500 mm is specified using the group argumentation method. The study presents a new mathematical model that establishes the relationship between tool fracture resistance and key operational parameters. This model incorporates the probabilistic nature of

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Kadubovskaya, G. "Theoretical studies of the “Workpiece-tool” system vibroacoustic dynamics of the turning group woodworking machines." Journal of Physics: Conference Series 2131, no. 2 (2021): 022040. http://dx.doi.org/10.1088/1742-6596/2131/2/022040.

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Abstract In the woodworking industry, the issue of noise reduction is one of the fundamental ones. In most cases, it is an indicator of equipment and products quality, in addition, it negatively affects the performance and irritates the nervous system of machine operators. [1]. The cause of noise is the process of cutting tool interaction with wood and it also depends on the type of wood cutting tool. For wood manufacturing, the blade and abrasive cutting tools are used. The blade instrument has a specified number of fixed shape blades and is divided into disk, cylindrical, conical and plate-s

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3

Tymochko, V., I. Horodetskyi, and A. Berezovetskyi. "Risk assessment at work on metal-working machine of turning group." Bulletin of Lviv National Agrarian University. Agroengineering Research, no. 22 (December 1, 2018): 187–95. http://dx.doi.org/10.31734/agroengineering2018.01.187.

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4

Безъязычный, Вячеслав, Vyacheslav Bezyazychnyy, Александр Чукарин, et al. "Sliding block vibrations when turning." Science intensive technologies in mechanical engineering 2018, no. 11 (2018): 3–8. http://dx.doi.org/10.30987/article_5bd8ab4233c8d4.32366481.

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Computation dependences on the definition of vibration amplitude in machine sliding blocks of a lathe group, in particular, sliding blocks of boring lathes of VM series, feed through cutters and boring ones are defined. Vibration speeds of oscillations in the direction of coordinate axes with the aid of which one defines actually amplitudes of deformations are defined. As a result of investigations there are determined dependences to obtain amplitudes of deformations, mean-square values of oscillation speeds affecting errors at parts machining on boring lathes.

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de Lima, J. G., R. F. de Ávila, and A. M. Abrão. "Turning of hardened AISI 4340 steel using coated carbide inserts." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 221, no. 8 (2007): 1359–66. http://dx.doi.org/10.1243/09544054jem847.

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The machining of hardened steels employing polycrystalline cubic boron nitride and ceramic tooling has been comprehensively investigated over the last 20 years; however, the development of newer cemented carbide grades has extended the use of this group of materials to the machining of steels hardened up to 45 HRC (Rockwell C). The current paper is therefore concerned with continuous turning of AISI 4340 steel hardened from 250 to 525 HV using coated carbide tools in order to investigate whether this cutting tool grade is capable of providing a satisfactory performance when machining a steel w

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Dyrbuś, Grzegorz. "WEAR STUDY ON THE APPLICATION OF DIPS COOLING FOR MACHINING INCONEL 718 WITH CERAMIC INSERTS." International Journal of Modern Manufacturing Technologies 16, no. 2 (2024): 72–79. https://doi.org/10.54684/ijmmt.2024.16.2.72.

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Traditional methods of machining Inconel 718 alloys using conventional cooling cause a significant decrease in tool life, so the research attempted to determine how the use of cryogenic cooling will affect the machining. The article contains the results of experimental research, the main goal of which was to determine the possibility of using DIPS dry ice cooling for machining difficult-to-machine materials. The research involved comparing of the tool life for three types of cooling system: conventional cooling with oil emulsion, cryogenic cooling with CO2 using - Dry Ice Powder System (DIPS)

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Sang, Lu Ping. "Turning-Milling Machining Center of Each Axis Movement Principle and the Headstock Structure Analysis." Advanced Materials Research 912-914 (April 2014): 878–81. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.878.

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Turning milling machining center are analyzed the structure and working principle of headstock of numerical control machine tool headstock consists of motor, drive system and components of the head of a bed, is mainly used to achieve the main movement of the machine tool. Spindle structure adopts precision double row cylindrical roller bearing and two-way thrust angular contact ball bearing group and type. The machine is the best combination of lathe and milling machine. Configuration French NUM1060 system, realize five axis control, a loading card can complete a variety of difficult machining

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8

Ren, Xiaolu, Xuanchi Li, and Xinrong Song. "Modeling and Optimization of Interaction Behavior between Right Turning Motor Vehicles and Pedestrians at Signalized Intersections based on Machine Learning." Frontiers in Science and Engineering 4, no. 9 (2024): 165–70. http://dx.doi.org/10.54691/whzf3371.

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This project first conducted a comprehensive analysis of the interaction process between pedestrians and right turning motor vehicles and its influencing factors through a summary of existing literature and observation of actual situations. On the basis of comprehensive and accurate data, machine learning algorithms were used to model and predict the interaction behavior between pedestrians and right turning motor vehicles. By comparing different algorithms, the optimal models for predicting the yielding behavior of right turning motor vehicles and pedestrian crossing behavior in the current d

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Muhamedsalih, Yousif, Julian Stow, and Adam Bevan. "Use of railway wheel wear and damage prediction tools to improve maintenance efficiency through the use of economic tyre turning." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 233, no. 1 (2018): 103–17. http://dx.doi.org/10.1177/0954409718781127.

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This paper investigates the wear rate and pattern for wheels turned with thin flanges using economic tyre turning. Economic tyre turning refers to the process of turning wheels to a profile that has the same tread shape but a thinner flange than the design case profile, allowing less material to be removed from the wheel diameter during re-profiling. Modern wheel lathes are typically capable of turning such profiles but the GB railway group standards do not currently permit their use. The paper demonstrates how the wheel profile damage model (WPDM) can be used, with a good degree of accuracy,

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Sheng, Zhong Qi, Zong Xiao Zhu, Xiang Dong Shi, and Chao Biao Zhang. "Research on Modular Division Method of CNC Machine Tool." Advanced Materials Research 503-504 (April 2012): 78–81. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.78.

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Modular division is the first step of modular design, which also is the premise and basis of modular design. Whether modular division is reasonable can directly affect the systemic function performance and the cost of modular products. This paper introduces a new sort of modular division method, which divides the modules by calculating the correlations among sub-functions. At last, taking the high-speed CNC turning center as example, which is made by Shenyang Machine Tool Group, this paper proved the effectiveness and feasibility of the method.

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Chapman, Arthur. "Turning Flickr into a useful Citizen Science Resource." Biodiversity Information Science and Standards 1 (August 16, 2017): e20348. https://doi.org/10.3897/tdwgproceedings.1.20348.

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Flickr is a photo and web hosting social media site created by Ludicorp in 2004 and later (in 2005) acquired by Yahoo. It is largely used by people for hosting social media type photos, but through the judicious use of Tagging (including use of machine tags), APIs, grouping, tag indexing and georeferencing it has been turned into a powerful citizen science resource. By 2015, it was estimated that there were over 10 billion images on Flickr, and there are millions of biodiversity-related images posted. Flickr provides for the creation of 'Groups' and for example, the 'Bird Photo Group' alone ha

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Skoczypiec, Sebastian, Marcin Grabowski, and Adam Ruszaj. "Research on Unconventional Methods of Cylindrical Micro-Parts Shaping." Key Engineering Materials 504-506 (February 2012): 1225–30. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.1225.

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One can state that special place in group of micromanufacturing methods are connected with application of unconventional methods, such as electrochemical (EC) and electrodischarge (ED) micromilling, because of their high efficiency in shaping 3D structures. In the paper result of cylindrical tools manufacturing for EC and ED-micro milling process will be discussed. The special attention will be paid for electrochemical etching, electrodischarge turning and some hybrid methods application for micro-tools manufacturing

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Khan, Dr Imran A., Ghanshyam Patel, Prajwal Barse, Harshit Kunwar, Roshan Satpute, and Manish Hiraskar. "3D Modelling of Scrap Minimizing Machine." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (2022): 1728–32. http://dx.doi.org/10.22214/ijraset.2022.41604.

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Abstract: Ill as taking care of and transportation of metal chips. Endeavours have been taken to guarantee an effective squander the board framework in shop floors, with least utilization of space and energy with regards to discarding Meta. There are a few modern creation processes that include mechanical machining of cast parts by different activities like turning, processing, and boring. Metal Chips, particularly of aluminium, gentle steel and cold-moved carbon steel, and so on. The assortment, stockpiling, and transportation of metal chips are a significant angle during the time spent reusi

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Kumar, Raj, Pavan Chaudhary, Inzimam Ul Hassan, and Gowrishankar Jayaraman. "Fine-tuned tuna swarm optimization for enhanced multi-pass turning performance." Multidisciplinary Science Journal 6 (July 12, 2024): 2024ss0311. http://dx.doi.org/10.31893/multiscience.2024ss0311.

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Even with advances in machining optimization approaches, the complexity of multi-pass turning tasks is too much for current approaches to handling. This is because current techniques are not able to fine-tune or change dynamically to achieve the best possible results. A novel Fine-Tuned Tuna Swarm Optimisation (FTSO) is presented in this study for a specialized optimization method. FTSO actively modifies its parameters to optimize toolpath preparation, tool decision-making and cutting specifications in an effort to enhance turning performance generally. It is motivated by the group behavior of

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15

Nur, Rusdi. "Calculating the Power Demand in Turning of AISI 316L Stainless Steel Through the Cutting Forces Data." INTEK: Jurnal Penelitian 3, no. 1 (2016): 43. http://dx.doi.org/10.31963/intek.v3i1.24.

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Abstract—Austenitic stainless steel AISI 316L has been widely used for orthopedic implants due to its mechanical properties, corrosion resistance and biocompatibility. Machining of austenitic stainless steel are often regarded as 'difficult to machine' and classed a single group of steels, based on experience with the most common austenitic types. This paper presents a methodology for practical calculation of power demand based on cutting force that will be compared with experimental results especially turning process. Based on a previously proposed definition, the power demand in metal cuttin

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Filippov, Aleksey, German Pachurin, Diana Goncharova, et al. "Resource-saving preparation of the 38KHGNM steel surface for heading of automobile components." E3S Web of Conferences 157 (2020): 01006. http://dx.doi.org/10.1051/e3sconf/202015701006.

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To produce high-quality fasteners for motor group components of automobiles it is necessary to follow the increased requirements to calibrated rolled stock in terms of surface defects. Therefore, the goal of this paper is to study the reasons, types and depth of the surface defects on the calibrated rolled stock from steel 38KHGNM Ø 12.0 mm on the basis of the metallographic analysis. Before cold upsetting, the hot-rolled products are subjected to metal flow and removal of unacceptable surface defects by means of expensive turning operation during which the screw cuts and cracks might appear.

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17

Zakovorotny, Vilor, and Valery Gvindjiliya. "Determination of optimal coordinates for switching processing cycles on metal-cutting machines." Metal Working and Material Science 23, no. 1 (2021): 56–67. http://dx.doi.org/10.17212/1994-6309-2021-23.1-56-67.

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Introduction. One of the ways to improve the efficiency of processing on machines is to coordinate the CNC program with the changing properties of the dynamic cutting system. If this takes into account the tool wear and the associated with it changes in the parameters of the dynamic cutting system, then the cutting speed to ensure the minimum wear rate is reduced along the cutting path. The corresponding feed rate is reduced even faster, since it is necessary to ensure a constant deformation displacement of the tool relative to the workpiece. The evolution of the properties of the cutting proc

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18

Cabrera, Francisco Mata, I. Garrido, J. Tejero, V. N. Gaitonde, S. R. Karnik, and J. Paulo Davim. "Surface Roughness Minimization in Turning PEEK-CF30 Composites with TiN Cutting Tools Using Particle Swarm Optimization." Materials Science Forum 766 (July 2013): 109–22. http://dx.doi.org/10.4028/www.scientific.net/msf.766.109.

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Poly ether ether ketone (PEEK) composite belongs to a group of high performance thermoplastic polymers and the addition of carbon fibers increases the resistance and rigidity of PEEK. Due to favorable mechanical and thermal properties and potential applications in various manufacturing industries, it is essential to analyze the machining performance of reinforced PEEK composites. The surface roughness is a widely used measure of product quality that could influence the performance of mechanical products and production costs. The present study establishes the relationships between the cutting c

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Bignan, Gilles, and Jean-Yves Blanc. "Supporting infrastructures and research reactors: status, needs and international cooperation, IAEA ICERR (International CEntres based on Research Reactors) and IGORR (International Group on Research Reactors), FP7 and H2020 JHR access rights." EPJ Nuclear Sciences & Technologies 6 (2020): 26. http://dx.doi.org/10.1051/epjn/2019022.

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The panorama of research reactors in the world is at a turning point, with many old ones being shutdown, a very few new ones under construction and many newcomer countries interested to get access to one or to build one domestic research reactor or zero-power reactor. In this evolving context, several actions have been set up to answer this international collaboration need: the IAEA has launched the ICERR initiative, the OECD/NEA is proposing the P2M joint project proposal. In France, the Jules Horowitz Reactor (JHR), under construction at CEA Cadarache, within an International Consortium, wil

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20

Shaked, David, and Viven Hau. "AI2 – Where Appreciative Inquiry and Artificial Intelligence Meet." AI Practitioner 26, no. 3 (2024): 3–7. http://dx.doi.org/10.12781/978-1-907549-60-1-1.

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The year 2022 marked a turning point in the world of Artificial Intelligence. Several powerful tools based on generative language models were introduced, making Artificial Intelligence technology a lot easier to use. This issue includes articles written by a diverse group of contributors, some experienced Appreciative Inquiry practitioners, others experts in Artificial Intelligence. They explore the topic from different angles, covering what is already possible, what might be possible in the future and what we should keep in mind when bringing in this powerful technology into our practice.

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Li, Xi Bing, X. L. Liu, Z. M. Shi, Q. M. Hu, and S. G. Wang. "Research on Fabrication Technology and Hydraulic Performance of Multi-Point Gear Flow Dividers." Advanced Materials Research 188 (March 2011): 376–80. http://dx.doi.org/10.4028/www.scientific.net/amr.188.376.

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With the rapid development of static-press technique, multi-point constant oil supply system has been widely applied into bearing the work table of large CNC vertical turning machine. A group method has been proposed through the analysis of the operating principle, structural features and manufacturing method of multi-point gear flow dividers. Then the diversion characteristics of the twelve point gear flow dividers manufactured through this method are compared with those of the dividers alike both at home and abroad. The experimental results show that the multi-point gear flow dividers manufa

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Paese, Evandro, Martin Geier, Fabiano R. Rodrigues, Tadeusz Mikolajczyk, and Mozammel Mia. "Assessment of CVD- and PVD-Coated Carbides and PVD-Coated Cermet Inserts in the Optimization of Surface Roughness in Turning of AISI 1045 Steel." Materials 13, no. 22 (2020): 5231. http://dx.doi.org/10.3390/ma13225231.

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In this study, an experimental and statistic investigation approach based on analysis of variance (ANOVA) and response surface methodology (RSM) techniques was performed to find the significant main effects and two-factor interaction effects and to determine how the controllable factors such as cutting speed, feed rate, depth of cut (DOC), tool nose radius, substrate and coating method of cutting tools influence surface quality in turning of AISI 1045 steel. The first optimal or near-optimal conditions for the quality of the generated surface and the second ones, including maximum material rem

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Dayanika, J., G. Archana, K. Siva Kumar, and N. Pavani. "Early Detection of Cyber Attacks Based on Feature Selection Algorithm." Journal of Computational and Theoretical Nanoscience 17, no. 9 (2020): 4648–53. http://dx.doi.org/10.1166/jctn.2020.9293.

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The world is turning out to be progressively digitalized raising security concerns and the urgent requirement for strong and propelled security advancements and systems to battle the expanding complex nature of digital assaults. This paper talks about how machine learning is being utilized in digital security in resistance and offense exercises, remembering conversations for digital assaults focused at machine learning models. In this review, we are proposing a scientific categorization of IDS, which considers information protests to be essential measurements to group and condense IDS Literatu

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Gyliene, Virginija, Algimantas Brasas, Antanas Ciuplys, and Janina Jablonskyte. "Optimization of the Surface Roughness and Chip Compression Ratio of Duplex Stainless Steel in a Wet Turning Process Using the Taguchi Method." Machines 12, no. 7 (2024): 437. http://dx.doi.org/10.3390/machines12070437.

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Duplex stainless steels (DSSs) are used in many applications due to their properties, such as high mechanical strength, good corrosion resistance, and relatively low cost. Nevertheless, DSS belongs to the materials group that is difficult to machine. The demand for a total increase in the production requires the optimization of cutting conditions. This paper examines the influence of cutting parameters, namely cutting velocity, feed, and the depth of cut on the surface roughness and chip compression ratio (CCR) after the DSS wet turning process. The study employed Taguchi optimization to deter

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Tsvetkova, Milena, Irina Ushatikova, Nataliya Antonova, Svetlana Salimova, and Tatyana Degtyarevskaya. "The Use of Social Media for the Development of Digital Literacy of Students: From Adequate Use to Cognition Tools." International Journal of Emerging Technologies in Learning (iJET) 16, no. 02 (2021): 65. http://dx.doi.org/10.3991/ijet.v16i02.18751.

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The study focuses on the possibility of turning social media into an effective tool to improve digital literacy and facilitate cognition. In view of this, a one-month experiment involving 268 eighth graders from two Moscow schools was con-ducted; the participants were divided into a control and an experimental group. The students were encouraged to independently search and develop social net-work skills to solve educational issues and improve cognition. Objective perfor-mance tests were conducted based on the curriculum results. According to the ac-ademic performance, the mean grade on a 12-po

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Ghule, Govind, Sudarshan Sanap, and Satish Chinchanikar. "Ultrasonic vibration-assisted hard turning of AISI 52100 steel: comparative evaluation and modeling using dimensional analysis." Metal Working and Material Science 25, no. 4 (2023): 136–50. http://dx.doi.org/10.17212/1994-6309-2023-25.4-136-150.

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Introduction. Precision machining of hard and brittle materials is difficult, which has led to the development of novel and sustainable techniques such as ultrasonic vibration-assisted turning (UVAT) for enhanced removal rates, surface quality, and tool life. The purpose of the work. Hard turning using cost-effective coated carbide tools instead of costly to operate ceramic and CBN inserts is still not widely accepted due to tool wear and machining limitations. A group of researchers attempted hard turning using carbide tools with different coatings, different cooling techniques, etc., to achi

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Shtok, Nina. "A critical study of group-defining categories in the discursive construal of national identity." Linguistics Beyond and Within (LingBaW) 10 (December 31, 2024): 215–28. https://doi.org/10.31743/lingbaw.18020.

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On 24 February 2022, Russia launched a full-scale military invasion of Ukraine. The beginning of this war marked a significant turning point with far-reaching consequences for the countries involved. Russian political discourse has responded swiftly to the conflict with a marked increase in nationalist rhetoric. This surge underscores a renewed emphasis on national unity and a collective sense of purpose, alongside a growing imperative to safeguard Russian integrity and sovereignty. The discourse has increasingly framed the war as a battle against external threats, positioning Russia as a defe

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Arh, Boštjan, Franc Tehovnik, Franci Vode, and Bojan Podgornik. "Effect of Ti and S Content on the Properties and Machinability of Low-Carbon Ferritic–Pearlitic Steel." Metals 14, no. 9 (2024): 977. http://dx.doi.org/10.3390/met14090977.

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This research was focused on the effect of Ti and S content on the formation of non-metallic inclusions and their influence on the mechanical properties and machinability of low-carbon ferritic–pearlitic steels. An analysis and classification of the non-metallic inclusions were carried out. The tensile strength and impact toughness were determined from samples taken in the rolling direction. Machinability investigations were carried out on a CNC turning machine and by analyzing the surface roughness. TiO-TiN inclusions are present in steels with an increased Ti content. In these steels, the ha

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Franczyk, Emilia, and Wojciech Zębala. "Impact of Cutting Data on Cutting Forces, Surface Roughness, and Chip Type in Order to Improve the Tool Operation Reliability in Sintered Cobalt Turning." Materials 17, no. 10 (2024): 2210. http://dx.doi.org/10.3390/ma17102210.

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The authors present the results of laboratory tests analysing the impact of selected cutting data and tool geometry on surface quality, chip type and cutting forces in the process of orthogonal turning of sintered cobalt. The selected cutting data are cutting speed and feed rate. During the experiments, the cutting speed was varied in the range of vc = 50–200 m/min and the feed rate in the range of f = 0.077–0.173 mm/rev. In order to measure and acquire cutting force values, a measuring setup was assembled. It consisted of a Kistler 2825A-02 piezoelectric dynamometer with a single-position too

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Guzenko, Maria K., and Eduard Korkotian. "The effect of haloperidol on the formation of behavioral patterns in adult rats." Вестник Пермского университета. Серия «Биология»=Bulletin of Perm University. Biology, no. 4 (2022): 340–46. http://dx.doi.org/10.17072/1994-9952-2022-4-340-346.

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The application of a new approach to the analysis of the behavior of laboratory rats based on the color coding of the video frame sequence is presented. Behavioral features were identified in rats injected with haloperidol. In the experimental group, motor activity on the periphery of arena was significantly lower than in the control group. Moreover, there was a tendency to a significant decrease in physical activity in the second half of the test period. In the control and experimental groups, there was a pronounced difference in such patterns as moving forward, turning right, left and turnin

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Muhammad Tianda, Izhar, Mohammad Noufal Ubadah, M. Fariz Fadillah Mardianto, et al. "Clustering Fake News with K-Means and Agglomerative Clustering Based on Word2Vec." INTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH 12, no. 02 (2024): 3999–4007. http://dx.doi.org/10.47191/ijmcr/v12i2.01.

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Fake News on digital platforms is a major problem in this digital age. Many people want to find methods to detect Fake News. This research looks at a way to group Fake News articles using K-Means and Agglomerative Clustering techniques, using the semantic representations from Word2Vec embeddings. The researchers use natural language translation methods and advanced machine learning to improve the accuracy and efficiency of Fake News detection. The study involves getting meaningful features from textual data, turning them into vector representations using Word2Vec, and then applying clustering

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Izhar, Muhammad Tianda, Noufal Ubadah Mohammad, Fariz Fadillah Mardianto M., et al. "CLUSTERING FAKE NEWS WITH K-MEANS AND AGGLOMERATIVE CLUSTERING BASED ON WORD2VEC." International Journal of Mathematics and Computer Research 12, no. 02 (2024): 3999–4007. https://doi.org/10.5281/zenodo.10617922.

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Fake News on digital platforms is a major problem in this digital age. Many people want to find methods to detect Fake News. This research looks at a way to group Fake News articles using K-Means and Agglomerative Clustering techniques, using the semantic representations from Word2Vec embeddings. The researchers use natural language translation methods and advanced machine learning to improve the accuracy and efficiency of Fake News detection. The study involves getting meaningful features from textual data, turning them into vector representations using Word2Vec, and then applying clustering

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Heljakka, Katriina, and Pirita Ihamäki. "Preschoolers Learning with the Internet of Toys: From Toy-Based Edutainment to Transmedia Literacy." Seminar.net 14, no. 1 (2018): 85–102. http://dx.doi.org/10.7577/seminar.2835.

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 The Internet of Toys (IoToys) as an emerging type of edutainment presents a new research area, especially in the context of learning. This study investigates four connected toys played with in the preschool context. By turning to preschool-aged children and their educators observed and interviewed during and after a play test and group interview session, we study how the educational value of IoToys is actualized in a play situation in an early learning environment. In order for IoToys to work as tools in toy-based learning in the preschool context, we suggest that educators acknowledge

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Fernández-Valdivielso, A., LN López de Lacalle, G. Urbikain, and A. Rodriguez. "Detecting the key geometrical features and grades of carbide inserts for the turning of nickel-based alloys concerning surface integrity." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 20 (2016): 3725–42. http://dx.doi.org/10.1177/0954406215616145.

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Machining science is aimed at defining both cutting tools and machining conditions based on economic performance and to maintain workpiece surface integrity. Currently, machinists face a wide offer of turning, milling, drilling, and threading tools. Tools present a lot of similarities and light differences between them, being the latter the concealed reasons for a better or worse performance on difficult-to-cut alloys machining. However machinists had not useful methods for detecting which key tool aspects implies the best performance. The classic and expensive 'test-trial' method results non-

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Hasan, Md Shahanur, Abdul Md Mazid, and Richard Clegg. "The Basics of Stellites in Machining Perspective." International Journal of Engineering Materials and Manufacture 1, no. 2 (2016): 35–50. http://dx.doi.org/10.26776/ijemm.01.02.2016.01.

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Stellites are cobalt (Co)-based superalloys available in two main combinations: (a) a Tungsten (W) group with composition of Co-Cr-W-C, and (b) a Molybdenum (Mo) group containing Co-Cr-Mo-C. Stellites possess outstanding corrosion resistance, oxidation resistance, wear resistance, heat resistance, and low magnetic permeability. Components made of stellites work well in highly corrosive environments and maintain these advantageous properties at elevated temperatures. Components made of stellites are widely used in the oil and gas, automotive, nuclear power, paper and pulp, chemical and petroche

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Stevermer, Catherine A., Kari N. Smith, Courtney Buhrow, Lindsey N. Butz, Mary Garces, and Britney S. Williams. "Self-Report and Performance-Based Measures for Pelvic Girdle Pain During Pregnancy." Journal of Women's & Pelvic Health Physical Therapy 48, no. 4 (2024): 220–31. http://dx.doi.org/10.1097/jwh.0000000000000310.

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Purpose: The purpose of this cross-sectional study was to quantify functional mobility in pregnant individuals during the second and third trimesters, both with and with no pelvic girdle pain, using performance-based measures as compared with self-report tools. Methods: Study participants included 58 individuals between 18 and 45 years of age in the second or third trimesters of pregnancy who were categorized by pelvic girdle pain ratings and positive screening results. Participants completed the Pelvic Girdle Questionnaire (PGQ) and the Pelvic Floor Impact Questionnaire (PFIQ), and were evalu

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De Pontes, Romário Ferreira, and Thereza Patrícia Pereira Padilha. "Analyzing how the sobek tool can assist students’ writing." South Florida Journal of Development 4, no. 6 (2023): 2225–31. http://dx.doi.org/10.46932/sfjdv4n6-001.

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Reading and text production are two important skills for everyone, but it is known that even students in higher education have difficulties how to write high-quality texts. Currently, there are several automatic text analysis tools, also well-known as text mining tools, available on the Internet (paid and free) which can be used to support text production, such as LanguageTool (Zhang et al., 2018), TextAlyser (TextAlyser, 2019), TagCrowd (TagCrowd, 2019), and Sobek (Macedo et al., 2016). These tools usually highlight attention points in a text, present a statistical analysis, suggest connectio

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Edhy Sutanta, Suparni Setyowati Rahayu, Raden Wisnu Nurcahyo, Samuel Kristiyana, Aris Wahyu Murdiyanto, and Mukasi Wahyu Kurniawati. "PENERAPAN TEKNOLOGI MESIN MIXER UNTUK MENINGKATKAN KUANTITAS DAN KUALITAS PRODUK PUPUK KOMPOS DI GAPOKTAN NGUDI MAKMUR, BANJARARUM, KULON PROGO." Jurnal Berdaya Mandiri 6, no. 1 (2024): 14–24. http://dx.doi.org/10.31316/jbm.v6i1.6074.

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The Ngudi Makmur Farmer Group (Gapoktan) is one of the productive economic groups located in Banjararum Village, Kulon Progo, Yogyakarta. Gapoktan Ngudi Makmur faces several issues, some of are deemed important and need to be resolved. The mentioned issues include environmental pollution risks and unpleasant odors arising from piles of livestock manure. Livestock manure is generally processed into compost fertilizer to nourish crops managed by the group. The process of turning livestock manure into compost fertilizer is done with the hand tool, resulted in relatively low production quantity an

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Hannun, Jamal, Charitha Dias, Alaa Hasan Taha, et al. "Pedestrian flow characteristics through different angled bends: Exploring the spatial variation of velocity." PLOS ONE 17, no. 3 (2022): e0264635. http://dx.doi.org/10.1371/journal.pone.0264635.

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Common geometrical layouts could potentially be bottlenecks, particularly during emergency and high density situations. When pedestrians are interacting with such complex geometrical settings, the congestion effect might not be uniform over the bottleneck area. This study uses the trajectory data collected through a controlled laboratory experiment to explore the spatial variation of speeds when a group of people navigates through bends. Four turning angles, i.e., 45°, 90°, 135° and 180°, with a straight corridor and two speed levels, i.e., normal speed walking and slow running (jogging), were

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Gal, Noam. "Ironic humor on social media as participatory boundary work." New Media & Society 21, no. 3 (2018): 729–49. http://dx.doi.org/10.1177/1461444818805719.

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This article explores the use of irony for boundary work in social media. It suggests that the combination of the polysemy inherent to ironic humor and new decontextualized digital environments entails greater potential for misinterpretation, thus turning humorous interactions into segregating tools. Using the case of left-wing mockery of a far-right-wing group in Israel, I trace the ways in which online irony serves as a means for social consolidation and differentiation. Findings indicate that the combination of medium (Facebook), keying (ironic humor), and content (social divides) works to

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The Ho, Quang Ngoc, Thanh Trung Do, Pham Son Minh, Van-Thuc Nguyen, and Van Thanh Tien Nguyen. "Turning Chatter Detection Using a Multi-Input Convolutional Neural Network via Image and Sound Signal." Machines 11, no. 6 (2023): 644. http://dx.doi.org/10.3390/machines11060644.

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In mechanical cutting and machining, self-excited vibration known as “Chatter” often occurs, adversely affecting a product’s quality and tool life. This article proposes a method to identify chatter by applying a machine learning model to classify data, determining whether the machining process is stable or vibrational. Previously, research studies have used detailed surface image data and sound generated during the machining process. To increase the specificity of the research data, we constructed a two-input model that enables the inclusion of both acoustic and visual data into the model. Da

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Mkoko, Zwelinzima, and Khaled Abou-El-Hossein. "Diamond Insert Wear when Turning Rapidly Solidified Aluminium RSA 443 of High-Silicon Content." Materials Science Forum 828-829 (August 2015): 265–71. http://dx.doi.org/10.4028/www.scientific.net/msf.828-829.265.

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Rapid solidification of molten metals has been recently used to generate a new group of alloys having ultra-fine microstructures and high end mechanical properties. Therefore, such alloys can be successfully used in the optics industry to produce diamond machined mirrors and mould inserts for plastic lens injection. Rapidly solidified aluminium grades characterised by their ultra-fine grains can be used to replace traditional optical aluminium such as 6061-T6 which has coarse microstructure when making optics. However, there is currently no data available on the performance of these new grades

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Nurfiana, Maysa, and Nerosti Nerosti. "TARI CANGGET PILANGAN DI DAERAH ABUNG SELATAN KABUPATEN LAMPUNG UTARA: TINJAUAN KOREOGRAFI." Jurnal Sendratasik 10, no. 1 (2020): 271. http://dx.doi.org/10.24036/jsu.v9i2.110541.

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This study aims to describe and analyze the choreography of Cangget Pilangan Dance in Abung Selatan village of North Lampung.This research belongs to a qualitative research using descriptive analysis. The instrument used was the researcher itself and was assisted by supporting instruments such as writing tools and cameras. Types of data used were primary and secondary data. The data were collected through literature study, observation, interview, and documentation. The data analysis was done through data reduction, data modeling (displaying), and conclusions making through choreography theory

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Fatieieva, Nadiia, Oleksandr Fatyeyev, and Vladyslav Ponomarov. "ADVANTAGES OF USING HYDRAULIC EQUIPMENT OF MODULAR MOUNTING IN THE MODERNIZATION OF MACHINE HYDROSYSTEMS." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (November 14, 2022): 33–41. http://dx.doi.org/10.20998/2411-3441.2022.1.05.

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With each passing year, automation schemes that use hydraulics are becoming more and more complex. With the large number of hydraulic devices in the scheme, replacing threaded connections with other methods of mounting becomes very important. The analysis of building and mounting of hydraulic drives and hydraulic units on the example of metal-cutting machines, namely: round saw and turret lathe. The analysis shows that the optimal variant of pipeless mounting of hydraulic drives is mounting with the use of modular and butt hydraulic equipment. The main advantages of modular mounting are: reduc

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Chan, Jalvin Jia Xiang, Sutthiphong Srigrarom, Jiawei Cao, Pengfei Wang, and Photchara Ratsamee. "Small Flying Object Classifications Based on Trajectories and Support Vector Machines." Journal of Robotics and Mechatronics 33, no. 2 (2021): 329–38. http://dx.doi.org/10.20965/jrm.2021.p0329.

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This paper presents an alternative approach to identify and classify the group of small flying objects especially drones from others, notably birds and kites (inclusive of kiteflying), in near field, by examining the pattern of their flight paths and trajectories. The trajectories of the drones and other flying objects were extracted from multiple clips of videos including various natural and synthetic database. Four trajectories characteristics are observed and extracted from the object’s flight paths, i.e., heading or turning angle, curvature, pace velocity, and pace acceleration. Subsequent

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Viljo, Eeva Maija. "LABOR. A Statue Group in the Monument to Alexander II in Helsinki." ICO Iconographisk Post. Nordisk tidskrift för bildtolkning – Nordic Review of Iconography, no. 2 (October 11, 2021): 7–19. https://doi.org/10.69945/ico.vi2.25681.

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The statue group LABOR that forms part of the monument to Alexander II of Russia, Grand Duke of Finland, in Senate Square in Helsinki (inaugurated 1894) is discussed in the context of labour movement iconography by Fred Andersson in an article in Iconographisk Post 3/4 2020. The proposals of the sculptor Walter Runeberg (1838–1920) for LABOR paired Agriculture, a mature woman harvester, and a youthful Industry with tools and machinery. The latter figure was rejected and replaced by a farmer with an axe to indicate his role as a rural worker felling timber, the raw material of the forestry indu

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Islam, Md Kamrul, Uneb Gazder, Rocksana Akter, and Md Arifuzzaman. "Involvement of Road Users from the Productive Age Group in Traffic Crashes in Saudi Arabia: An Investigative Study Using Statistical and Machine Learning Techniques." Applied Sciences 12, no. 13 (2022): 6368. http://dx.doi.org/10.3390/app12136368.

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Road traffic crashes (RTCs) are a major problem for authorities and governments worldwide. They incur losses of property, human lives, and productivity. The involvement of teenage drivers and road users is alarmingly prevalent in RTCs since traffic injuries unduly impact the working-age group (15–44 years). Therefore, research on young people’s engagement in RTCs is vital due to its relevance and widespread frequency. Thus, this study focused on evaluating the factors that influence the frequency and severity of RTCs involving adolescent road users aged 15 to 44 in fatal and significant injury

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Capperucci, Davide, and Ilaria Salvadori. "Learning and performance evaluation in distance higher education: a case study during the Covid-19 pandemic." MATEC Web of Conferences 343 (2021): 11004. http://dx.doi.org/10.1051/matecconf/202134311004.

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The Covid-19 pandemic has caused disruption in students’ education and imposed numerous and unprecedented challenges on the educational systems all over the world turning the traditional learning processes into online distance education. The new context has raised the question of how to evaluate students’ learning and competences in distance education environments as effectively as possible. To maintain high quality standards of higher education, it is undoubtedly necessary to investigate through which tools the lecturers evaluate both the processes and the products of learning gained in onlin

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Carral, José Maria Cancela, Adriana López Rodríguez, Irimia Mollinedo Cardalda, and José Pedro Arieiro Gonçalves Bezerra. "Muscle strength training program in nonagenarians – a randomized controlled trial." Revista da Associação Médica Brasileira 65, no. 6 (2019): 851–56. http://dx.doi.org/10.1590/1806-9282.65.6.851.

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SUMMARY OBJECTIVES: The study aims to improve the functional capacity and quality of life (QOL) of nonagenarian women by implementing an individualized muscle strength training program in a geriatric residential care home. STUDY DESIGN: A randomized controlled trial METHODS: Twenty-six elderly women were randomized into a control group (CG) and an intervention group (SG). The SG carried out a strength program with TheraBands® for 12 weeks, with two weekly sessions. The assessment tools that we used pre- and post-intervention were the Barthel index of daily living activities, the five times sit

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Yadav, Praveen Kumar, Arshad Hasan, Anunay Singh, et al. "Large non-functional adrenocortical oncocytoma with uncertain malignant potential: case report and review of literature." International Surgery Journal 7, no. 7 (2020): 2414. http://dx.doi.org/10.18203/2349-2902.isj20202860.

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Adrenocortical oncocytomas are a very rare group of adrenal tumors. Unless functional, these tumors are incidentally diagnosed for clinical manifestations that are unrelated to the adrenal gland. The majority of these oncocytomas are benign and nonfunctional. Very few cases of uncertain malignant potential are reported. Here we present such a rare case of a 60 years old man presenting with voiding lower urinary tract symptoms but on contrast enhanced computed tomography (CECT) abdomen and pelvis a fairly large well defined heterogeneously enhancing retroperitoneal mass lesion with calcificatio

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