Relevant bibliographies by topics / Coal handling machinery industry

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Coal handling machinery industry'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Coal handling machinery industry"

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Ladd, Conrad M. "Power to the People." Mechanical Engineering 122, no. 09 (September 1, 2000): 68–75. http://dx.doi.org/10.1115/1.2000-sep-4.

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This article highlights that the creation of efficient electric appliances using cheap electricity has enabled us to enjoy healthier and more bountiful lives. Since electric power results from the conversion of energy resources in an electric power generating plant, those resources must be adequate and available at low cost at the plant site. Mechanical engineers developed the machinery for coal mining, for coal transportation, and for bulk coal handling. GE and Westinghouse made early contributions starting in electric generator and electric motor development. The US electric utility industry has been mandated by several states to sell all or a large portion of its generating plants. Independent power generators are building new combined-cycle units in selected market regions. Mergers and acquisitions of electric utilities are continuing to increase the size of parent company operations. Mechanical engineers have developed relatively low-cost electric power generation technology through the 20th century, enabling the United States to maintain its world economic leadership and standard of living.
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Xiao-yan, He, Wang Fei, Bai Yu-hui, and Yang Xiao. "Complementarities Between Coal Mining Machinery Industry and Coal Mining Industry: Evidence from China 1991-2006." Information Technology Journal 12, no. 22 (November 1, 2013): 7014–18. http://dx.doi.org/10.3923/itj.2013.7014.7018.

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Ladygin, D. S. "INCREASING OIL CHANGE INTERVALS FOR THE COAL INDUSTRY MINING MACHINERY." Ugol’, no. 09 (September 8, 2017): 36–37. http://dx.doi.org/10.18796/0041-5790-2017-9-36-37.

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P, Karrupusamy. "Machine Learning Approach to Predictive Maintenance in Manufacturing Industry - A Comparative Study." December 2020 2, no. 4 (January 27, 2021): 246–55. http://dx.doi.org/10.36548/jscp.2020.4.006.

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Predictive maintenance is the way to improve asset management in every manufacturing industry. While handling advance costlier machinery in the industry, the predictive maintenance knowledge will be essential to protect the machinery before gets degradation performance. Recently, the emergence of business in manufacturing industry deals with good systems, regular intervals maintenance process, predictive maintenance (PdM), machine learning (ML) approaches are extensively applied for handling the health standing of business instrumentation. Now the digital transformation towards I4.0, data techniques, processed management and communication networks; it’s doable to gather huge amounts of operational and processes conditions information generated type many items of kit and harvest information for creating an automatic fault detection and diagnosing with the aim to attenuate period of time and increase utilization rate of the parts and increase their remaining helpful lives. The predictive maintenance is inevitable for property good producing in I40. This paper aims to provide a comprehensive review of the recent advancements of metric capacity unit techniques wide applied to PdM for good producing in I4.0 by classifying the analysis consistent with metric capacity unit algorithms, ML class, machinery and instrumentation used device employed in information acquisition, classification of knowledge size and kind, and highlight the key contributions of the researchers and so offers pointers and foundation for additional analysis. In this research paper we constructed a Random Forest model to predict the failure of the various machine in manufacturing industry. It compares the prediction result with Decision Tree (DT) algorithm and proves its superiority in accuracy and precision.
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Koba, Toshihiko. "Port cargo handling in Chikuho coal mining industry during the Interwar Period." Keiei Shigaku (Japan Business History Review) 46, no. 4 (2012): 4_23–4_47. http://dx.doi.org/10.5029/bhsj.46.4_23.

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Balabanova, Anna, Vladimir Balabanov, Elena Dotsenko, and Natalya Ezdina. "Neo-industrialization of Kuzbass economy in innovative development of coal industry and machinery." E3S Web of Conferences 15 (2017): 04013. http://dx.doi.org/10.1051/e3sconf/20171504013.

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Chen, Xiao Min, and Xi Yan Liu. "The PLC Research in the Program Control System of Thermal Power Coal Handling." Advanced Materials Research 548 (July 2012): 812–16. http://dx.doi.org/10.4028/www.scientific.net/amr.548.812.

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With the rapid development of Chinese economy, the thermal power requirement is increasing not only in industry but also for the civil use in recent years. In China, the main fuel of thermal power is coal. Coal handling system places the consequence in the whole generate electricity system and has significant meaning to the power plant operation. The coal handling system of the thermal power plants has many types of equipment. The environment is vile with complicated control. If we control this system through manual mode, there will appear the imponderable questions. This article through the research of the coal handling system by the management of PLC can determine the long-term safe operation and reduce a mass of human power and material resources. It has the fundamental practical meaning and research value.
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Koenig, Frank, Pauline Anne Found, and Maneesh Kumar. "Condition monitoring for airport baggage handling in the era of industry 4.0." Journal of Quality in Maintenance Engineering 25, no. 3 (August 16, 2019): 435–51. http://dx.doi.org/10.1108/jqme-03-2018-0014.

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Purpose The purpose of this paper is to present the findings of a recent study conducted with the objective of addressing the problem of failure of baggage carts in the high-speed baggage tunnel at Heathrow Terminal 5 by the development of an innovative condition-based maintenance system designed to meet the requirements of twenty-first century airport systems and Industry 4.0. Design/methodology/approach An empirical experimental approach to this action research was taken to install a vibration condition monitoring pilot test in the north tunnel at Terminal 5. Vibration data were collected over a 6-month period and analysed to find the threshold of good quality tires and those with worn bearings that needed replacement. The results were compared with existing measures to demonstrate that vibration monitoring could be used as a predictive model for condition-based maintenance. Findings The findings demonstrated a clear trend of increasing vibration velocity with age and use of the baggage cart wheels caused by wheel mass unbalanced inertia that was transmitted to the tracks as vibration. As a result, preventative maintenance is essential to ensure the smooth running of airport baggage. This research demonstrates that a healthy wheel produces vibration of under 60 mm/s whereas a damaged wheel measures up to 100 mm/s peak-to-peak velocity and this can be used in real-time condition monitoring to prevent baggage cart failure. It can also run as an autonomous system linked to AI and Industry 4.0 airport logic. Originality/value Whilst vibration monitoring has been used to measure movement in static structures such as bridges and used in rotating machinery such as railway wheels (Tondon and Choudhury, 1999) this is unique as it is the first time it has been applied on a stationary structure (tracks) carrying high-speed rotating machinery (baggage cart wheels). This technique has been patented and proven in the pilot study and is in the process of being rolled out to all Heathrow terminal connection tunnels. It has implications for all other airports world-wide and, with new economic sensors, to other applications that rely on moving conveyor belts.
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Liu, Jia, Jizu Li, and Xilong Yao. "The Economic Effects of the Development of the Renewable Energy Industry in China." Energies 12, no. 9 (May 12, 2019): 1808. http://dx.doi.org/10.3390/en12091808.

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It is believed that renewable energy may become a dominant energy in the future. However, whether renewable energy can promote industry development like the use of fossil energy is still unknown. This paper uses social accounting matrix (SAM) multiplier model to analyze the economic effects of renewable and coal energy in China. The transmission mechanisms of renewable and coal energy on production factors are also compared from the perspective of sector industry chain based on the structural path analysis (SPA) analysis method. We found that; renewable energy plays a stronger role in promoting the national economy than coal energy. Meanwhile, renewable energy can better promote the upgrading of the industrial structure compared with coal energy. Additionally, renewable energy affects economic development, mainly through the intermediate industries such as electrical machinery manufacturing and transportation, warehousing and service industries. These findings provide further insights into the influence path of renewable energy, which yields important implications for reasonably designing and choosing new energy development planning.
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Škvareková, Erika, Marianna Tomašková, Dušan Sabadka, Marian Šofranko, and Štefan Zelenák. "Evaluation and Risk Factors of Roadheaders in Coal Mines." Management Systems in Production Engineering 29, no. 3 (June 24, 2021): 242–50. http://dx.doi.org/10.2478/mspe-2021-0030.

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Abstract During mechanical disintegration of the rock, for mining works are used also roadheaders. Roadheaders, in comparison with disintegration by blasting operations can without interuption, and works changes with one machine, dissolve, load and at the same time mine disintegrated rock. These electro-hydraulic machines cause no harmful vibrations and are ideal for mining coal and other soft rock minerals. Mechanical mining is safer, protects the rock environment, allows mining without further breaks, allows you to achieve a higher level of daily progress and also saves work. The analysis of occupational accidents in the Slovak Republic shows that it is necessary require from employees increased attention in any work activity and attention in the work performed (mainly work in handling material, objects and burdens). In the underground coal mines further attention needs to be paid to securing hazardous areas, it is necessary to proceed in such a way as to prevent as much as possible the fall of rock as much as possible Underground roads require modification and equipment in accordance with regulations. It is necessary to follow health and safety instructions mentioned in operating and maintenance documentation. Correction of some deficiencies is ordered by a decision of the Mining Office. Most measures are aimed at adhering to technological discipline, to complement operating documentation, to prevent rock falls, to equip some machinery and transport equipment, to work procedures for handling loads, to maintenance of mining works and for explosion and anti-vapor prevention. In this article, we assess the safety risks of two roadheaders for coal mining works in Slovak conditions. Pairwise comparisons of the criteria of selected roadheaders were used to determine the safety risks, as well as taking into account the risks and safety measures according to the mixed methods following to the standard.
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Dissertations / Theses on the topic "Coal handling machinery industry"

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Swart, Marinda. "A Scheduling model for a coal handling facility [electronic resource] /." Diss., Pretoria : [s.n.], 2004. http://hdl.handle.net/2263/25388.

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The objective of this project is to develop an operational scheduling model for Sasol Mining’s coal handling facility, Sasol Coal Supply (referred to as SCS), to optimise daily operations. In this document, the specific scheduling problem at SCS is presented and solved using Mixed Integer Non-Linear Programming (MINLP) continuous time representation techniques. The most recent MINLP scheduling techniques are presented and applied to an example problem. The assumption is made that the results from the example problem will display trends which will apply to the SCS scheduling problem as well. Based on this assumption, the unit-specific event based continuous time formulation is chosen to apply to the SCS scheduling problem. The detail mathematical formulation of the SCS scheduling problem, based on the chosen technique, is discussed and the necessary changes presented to customise the formulation for the SCS situation. The results presented show that the first phase model does not solve within 72 hours. A solution time of more than three days is not acceptable for an operational scheduling model in a dynamic system like SCS. Various improvement approaches are applied during the second phase of the model development. Special Ordered Sets of Type 1 (SOS1) variables are successfully applied in the model to reduce the amount of binary variables. The time and duration constraints are restructured to simplify the structure of the model. A specific linearization and solution technique is applied to the non-linear equations to ensure reduced model solution times and reliable results. The improved model for one period solves to optimality within two minutes. This dramatic improvement ensures that the model will be used operationally at SCS to optimise daily operations. The scheduling model is currently being implemented at SCS. Examples of the input variables and output results are presented. It is concluded that the unit-specific event based MINLP continuous time formulation method, as presented in the literature, is not robust enough to be applied to an operational industrial-sized scheduling problem such as the SCS problem. Customised modifications to the formulation are necessary to ensure that the model solves in a time acceptable for operational use. However, it is proved that Mixed Integer Non-linear Programming (MINLP) can successfully be applied to optimise the scheduling of an industrial-sized plant such as SCS. Although more research is required to derive robust formulation techniques, the principle of using mathematical methods to optimise operational scheduling in industry can dramatically impact the way plants are operated. The optimisation of daily schedules at SCS by applying the MINLP continuous time scheduling technique, has made a significant contribution to the coal handling industry. Finally, it can be concluded that the SCS scheduling problem was successfully modelled and the operational scheduling model will add significant value to the Sasol Group.
Dissertation (MEng (Industrial Engineering))--University of Pretoria, 2006.
Industrial and Systems Engineering
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Khan, Naushad Salim. "Handling characteristics of coal/biomass mixes : measurements and establishing benchmarks." Thesis, University of Greenwich, 2008. http://gala.gre.ac.uk/6087/.

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This project was aimed at developing an understanding of the issues faced by the power generation industry in the area of handling of coal/biomass mixes for co-firing. This project looked into two types of coals (Russian and Dawmill) and two types of biomasses (cereal co products (CCP) and milled palm nuts (MPN)) that are being extensively co-fired (as a mix) in the UK coal power plants and are known to cause a wide range of handling issues. The key objectives of the project included: Identifying a cost effective method of flow property measurement: Developing an understanding of the flow of coal/biomass mixes, and Identifying the handling problems in bunkers and design of bunker units to suit coal/biomass mixes flow. The main contribution of the project was the determination that caking due to mould growth over time, is a key handling issue and that different biomasses behave differently when added to coal in different mix ratios as far as caking it concerned. Another contribution is the Best Practice Guide that was prepared at the completion of the work as a recommendation to industry (which are using co-firing as method of power generation) and also for academia in the field.
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Shultz, James Edward. "Programmable logic controllers and supervisory control and data acquisition a system design for increased availability." Ohio : Ohio University, 1991. http://www.ohiolink.edu/etd/view.cgi?ohiou1239733126.

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Conradie, David Gideon. "Scheduling coal handling processes using metaheuristics." Diss., 2007. http://upetd.up.ac.za/thesis/available/etd-04212008-101917/.

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Kao, Chia-Jung, and 高嘉嶸. "Handling Missing Values in DEA Models – A Case of Taiwan’s Machinery Tool Industry." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/58370563377738726303.

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碩士
國立勤益科技大學
工業工程與管理系
99
Machinery is often referred to as the “mother of industry.” According to the statistics of 2010, Taiwan is the world’s fourth largest country in terms of exporting values of machine tools, and the fifth largest one in output values. Traditional data envelopment analysis (DEA) evaluates the relative efficiencies of a set of decision making unit (DMUs) that us input(s) to produce output(s). If the values of inputs or outputs are missing, traditional DEA models cannot handle this kind of situation. Due to the presence of missing values, this study applies fuzzy DEA (FDEA) and interval DEA (IDEA) to measure the efficiency of Taiwan’s machine tool industry. The results of FDEA and IDEA are followed by index ordering and interval classification to rank the efficiencies. We collect the data of 17 firms over the period 1998-2008. The input variables are fixed assets, operating expenses, and the number of employees; the output variables are net sales and earnings per share. Five missing values are present in 2000, where they belong to LEADWELL、Victor Taichung、Ta Liang、KENT industrial。According to the empirical results, the rankings of the big-M method and FDEA are highly consistent, and four companies are classified as E++ by IDEA. Regarding to those companies with missing values, the rankings are always Ta Liang＞Victor Taichung＞KENT industrial＞LEADWELL, no matter what type of method is used. An interesting result is that Ta Liang is the one with missing value, its efficiency value is crisp however. This fact appears to deserve future investigation.
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Books on the topic "Coal handling machinery industry"

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Conway, Ernest J. Material handling devices for underground mines. Pgh. [i.e. Pittsburgh] Pa: U.S. Dept. of the Interior, Bureau of Mines, 1988.

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Conference, Joint Power Generation. Handling low-grade coal fundamentals and applications: Presented at the 1989 Joint Power Generation Conference, Dallas, Texas, October 22-26, 1989. New York, N.Y: American Society of Mechanical Engineers, 1989.

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Conference, Joint Power Generation. Handling low-grade coal fundamentals and applications: Presented at the 1989 Joint Power Generation Conference, Dallas, Texas, October 22-26, 1989. New York, N.Y: American Society of Mechanical Engineers, 1989.

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Royal, T. Anthony. Gravity flow of solids engineering databook: Small scale testing of lock hoppers : final technical report phase III. Springfield, VA: National Technical Information Service, 1986.

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Raask, Erich. Erosion wear in coal utilization. Washington [D.C.]: Hemisphere Pub. Corp., 1988.

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Conway, Ernest J. Material handling devices for underground mines. Pittsburgh, PA: U.S. Dept. of the Interior, Bureau of Mines, 1989.

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Sh, Slepoĭ I͡U. Nepreryvnyĭ transport v promyshlennosti stroitelʹnykh materialov. Leningrad: Stroĭizdat, Leningradskoe otd-nie, 1988.

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Lüönd, Karl. Gelebtes Unternehmertum: Verarbeitende Fördertechnik : der Beitrag von Walter Reist an die moderne Medienindustrie. Zürich: Verlag Neue Zürcher Zeitung, 2010.

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Food and Agriculture Organization of the United Nations. and Food and Agriculture Organization of the United Nations. Agricultural Support Systems Division., eds. Processed foods for improved livelihoods. Rome: Agricultural Support Systems Division, Food and Agriculture Organization of the United Nations, 2004.

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Marwick, Groupe Conseil Peat. Studies in Canadian export opportunities in the U.S. market: Material handling equipment. Ottawa, Ont: Dept. of External Affairs = Ministère des affaires extérieures, 1989.

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Book chapters on the topic "Coal handling machinery industry"

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Gordon, Robert B., and Patrick M. Malone. "Coal, Canals, Railways, and Industrial Cities." In The Texture of Industry. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195058857.003.0010.

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During the decades after the 1820s, Americans reshaped the industrial landscape by gradually substituting coal for the wood and flowing water they were using as energy sources and iron for wood in structures and machinery. The amount of power they could obtain from wood or water at a given place was limited, but coal resources were so large that more was always available. Coal could be transported to distant consumers by the newly built canals and railways. With it, the resource constraints that had led entrepreneurs to favor small, dispersed mills and factories were less important. Production of coal was concentrated in Pennsylvania in the first part of the nineteenth century. At first, the largest markets were in the East, and as long as the Appalachians were a barrier to shipment of bituminous coal from the West, the anthracite coalfields of eastern Pennsylvania remained the principal source of industrial fuel. Ironmasters using anthracite to smelt ore mined in eastern Pennsylvania dominated American ironmaking until the last quarter of the nineteenth century. Industrialists west of the Appalachians experimented with bituminous coal and with coal converted to coke. They built furnaces around Pittsburgh and Cincinnati (where rivers provided good access to coking coal), and then through Ohio, Indiana, and, eventually, Illinois. But it was in eastern Pennsylvania that artisans and entrepreneurs established many of the economic and social practices followed by American heavy industry well into the twentieth century. Industries based on wood and water starkly contrasted with those based on coal and iron. Death and injury from mine accidents, social strife in mining communities, and environmental degradation from mine wastes were new costs of wealth created by the digging of anthracite. Because coal could be hauled long distances and still be sold at a lower cost per unit of energy than locally cut. wood, it could be shipped profitably to distant customers. They used it to make primary materials, such as iron, glass, and brick, and to convert these materials into finished, high-value-added goods. The social and environmental costs of getting the coal were left behind at the mines.
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Makaryan, Sergey, Holger Hoppe, and Karen Fortuin. "The potential for a circular economy in the nonroad mobile machinery industry—The case of Linde Material Handling GmbH." In Circular Economy and Sustainability, 567–86. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-12-819817-9.00006-5.

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Hardin, Garrett. "From Jevons's Coal to Hubbert's Pimple." In Living within Limits. Oxford University Press, 1993. http://dx.doi.org/10.1093/oso/9780195078114.003.0018.

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In a commercial society like ours it is understandable that money-makers should be the ones who pay the greatest attention to the implications of economics. Historians have been a breed apart, with most of them (until recently) paying little heed to the ways in which economics affects history. Yet surprisingly, a basis for the eventual integration of economics, ecology, and history was laid in the nineteenth century. The Victorian who tackled history from the economic side was William Stanley Jevons (1835-1882). The distinction made in the previous chapter between living in a area and living on it was a paraphrase of what Jevons wrote about the material basis of English prosperity: "The plains of North America and Russia are our cornfields; Chicago and Odessa our granaries; Canada and the Baltic are our timber forests; Australia contains our sheep farms, and in South America are our herds of oxen;.. . the Chinese grow tea for us, and our coffee, sugar, and spice plantations are in all the Indies. Spain and France are our vineyards, and the Mediterranean our fruit-garden.'" A century before the term "ghost acres" was coined, Jevons had clearly in mind the idea behind the term. Half a century before Jevons was born—in fact in the year the Bastille was stormed by French revolutionaries (1789)—an English mineral surveyer by the name of John Williams had asked, in The Limited Quantity of Coal of Britain, what would happen to the blessings of the industrial revolution when England no longer possessed the wherewithal to power the machinery that produced her wealth? Optimism is so deeply engrained a characteristic of busy people that this warning, like most first warnings, was little noted. It remained for Jevons to rouse the British public in 1865 with the publication of his book, The Coal Question. Jevons's life coincided in time with the period when the nature and significance of energy (in its prenuclear formulation) was becoming manifest to physical scientists. Since energy was needed to turn the wheels of industry, and coal was the most readily available source of energy, Jevons reasoned that the continued political dominance of Great Britain was dependent on the bounty of her coal. This naturally led to the double question, How long would English coal and the British Empire last?
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Clark, Daniel J. "The Era of “The Treaty of Detroit,” 1949–1950." In Disruption in Detroit, 35–53. University of Illinois Press, 2018. http://dx.doi.org/10.5622/illinois/9780252042010.003.0003.

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The 1950 GM-UAW contract, called "The Treaty of Detroit" by Fortune magazine, dominates accounts of postwar U.S. labor history because it seemed to ensure steady employment, increasing wages, and improved benefits, like pensions, for autoworkers. But the Treaty of Detroit and comparable contracts with Chrysler and Ford were efforts to achieve some semblance of stability and predictability in a volatile industry, not the confirmation and continued promise of the postwar boom. The contracts were signed after a year of national recession, marked by intensifying competition in the auto industry, with production speedups and strikes, new efforts at automation (the replacement of jobs with machinery), national coal and steel strikes, and chronic layoffs for autoworkers. The Korean War led to further instability.
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Pal, Kamalendu. "Software Agent-Based Simulation for Pan-European Transport Corridor Management in Supply Chain." In Advances in Logistics, Operations, and Management Science, 325–39. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8040-0.ch015.

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Software agent-based computing is emerging as an essential technology for developing commercial distributed systems to deal with the uncertainty in a dynamic business environment. Supply chain management (SCM) systems help to manage industry-specific business processes, services, and information flow among the stakeholders. Transportation network design and development is an essential part of effective supply chain management. The transport networks use different travel corridors for regular operations. The global supply chain transport corridors include various infrastructural components (e.g., border clearance authority, package handling machinery, weighbridge). The traffic and transportation systems domain are well suited for an agent-based approach because transportation systems are usually geographically distributed in a dynamic changing environment. This chapter describes a multi-agent software system to model and simulate transportation corridor use cases. The experimental simulation results provide potential guidance.
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Conference papers on the topic "Coal handling machinery industry"

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Hanoun, Samer, Burhan Khan, Michael Johnstone, Saeid Nahavandi, and Doug Creighton. "An effective heuristic for stockyard planning and machinery scheduling at a coal handling facility." In 2013 IEEE 11th International Conference on Industrial Informatics (INDIN). IEEE, 2013. http://dx.doi.org/10.1109/indin.2013.6622883.

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Jobes, Christopher C., and Jacob Carr. "Dynamic Modeling System to Determine Stopping Distances of Mobile Underground Coal Equipment." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86422.

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In underground coal mines, miners face the hazard of being struck or pinned by a piece of mobile mining machinery. Proximity detection systems have been developed and are used by the industry to protect miners around these machines by detecting the presence of the miners and automatically issuing warnings or disabling machine motion when a miner is in potentially dangerous proximity. These systems were originally developed for continuous mining machines, slow-moving machines that move on bulldozer-style tracks, and are now mandated by the Mine Safety and Health Administration (MSHA) to be used on continuous mining machines. These systems are now being adapted to other underground vehicles, such as shuttle cars, scoops, and battery haulers — vehicles that move on rubber tires at much higher speeds. There are concerns that the detection range of these systems may not provide for an adequate stopping distance on these faster moving machines. To address these concerns, researchers have developed a dynamic modeling system to determine the stopping distance of mobile underground coal equipment. This model can be used in conjunction with worker escapability data and/or information on interaction with other vehicles to provide insight into whether or not proximity detection systems will be adequate for the underground mining workplace. This paper details the background, development, and operation of the resulting application software, focusing on the utility of the graphical user interface to visualize the generated data. The refined data developed by this process can then be utilized by mine operators and proximity detection system manufacturers to more accurately determine the detection range needed to provide effective protection for miners working in an underground mining environment.
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Melanz, Daniel, Hammad Mazhar, and Dan Negrut. "Using an Anti-Relaxation Step to Improve the Accuracy of the Frictional Contact Solution in a DVI Framework for Rigid Body Dynamics." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59651.

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Systems composed of rigid bodies interacting through frictional contact are manifest in several science and engineering problems. The number of contacts can be small, such as in robotics and geared machinery, or large, such as in terrame-chanics applications, additive manufacturing, farming, food industry, and pharmaceutical industry. Currently, there are two popular approaches for handling the frictional contact problem in dynamic systems. The penalty method calculates the frictional contact force based on the kinematics of the interaction, some representative parameters, and an empirical force law. Alternatively, the complementarity method, based on a differential variational inequality (DVI), enforces non-penetration of rigid bodies via a complementarity condition. This contribution concentrates on the latter approach and investigates the impact of an anti-relaxation step that improves the accuracy of the frictional contact solution. We show that the proposed anti-relaxation step incurs a relatively modest cost to improve the quality of a numerical solution strategy which poses the calculation of the frictional contact forces as a cone-complementarity problem.
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Chandak, A., R. Sivakumar, and G. Balasubramanian. "Tribological Solutions for Engineering Industries by HVOF–Topgun Spraying." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0531.

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Abstract Shreenath has been engaged in the manufacturing and reclamation of engineering components by using the full range of thermal spraying since 1990. The analytical case studies of some of the tribological solutions provided to the core industries in Central India by HVOF spraying are presented in this paper. The case studies presented in this paper are the reclamation of the Vertical shaft of a bowl mill used for feeding crushed coal to the power plant, the engine spares of the earth moving machinery of the mining industries and the press rolls made up of chilled cast alloy steel, of defence industry. The surface characteristics needed for these applications, along with high hardness, bond strength and thermal conductivity could be achieved by the HVOF spraying using Topgun. In all the cases, the component life has been increased few folds and a direct cost saving of 30-70% was achieved. In addition, such an optimized reclamation reduces the down-time loss and improves the working efficiency.
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Nair, A., and A. Pillai. "Concept Design of an Unmanned Surface Vessel for Offshore Cargo Delivery." In International Conference on Marine Engineering and Technology Oman. London: IMarEST, 2019. http://dx.doi.org/10.24868/icmet.oman.2019.031.

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A technological push for the adoption of unmanned surface vessels is afoot in the marine industry, keeping abreast with the developments in the land and aviation transportation sector. The adoption of technology has the potential to improve efficiency and safety of operations, to transfer onshore human activity relating to vessel control and to make working conditions for ‘crew’ more appealing. Houlder Ltd, with its entrenched vessel and equipment design competencies serving the marine, offshore and defense sectors, has designed the concept of an unmanned surface vessel for offshore operations and maintenance. The project has been undertaken jointly with automation and control and marine logistics experts in the U.K. This paper presents the Houlder unmanned surface vessel concept design, delivering units of cargo to an offshore windfarm monopile platform. The project has been devised as part of the (Windfarm Autonomous Ship) project supported by Innovate UK and other project partners. Decoupling onboard human intervention from vessel operation has prompted rethinking on the vessel layout and re-examination of the suitability of current regulations. The design considerations have revised the spatial requirements and machinery systems for the unmanned and intended function. Further, the design has incorporated an innovative cargo handling.
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Wirth, Sean, Ruben Montes, Susan Bell, and Michael Saltzman. "Engineering Out the Hazards of a Machine Shop." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63072.

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A machine shop environment presents a high potential for occupational injuries and fatalities. A combination of rotating spindle, coolant spatter, cutting tool activity, and sharp airborne chips, occurring during the metal cutting process, creates a significant hazard for equipment operators. The danger of working in this environment is reflective in industry TRIRs (Total Recordable Incident Rate) which fall between 2.7 (Oil and Gas Manufacturing) and 5.5 (Metal Manufacturing) based on the latest USA Industry and Illness Data. This case study highlights how the Navigation Manufacturing facility (500 employees, 100 CNC machines) — identified numerous safety issues in its machine shop environment and processes, and undertook a three-step program for “engineering out” those hazards. 1. The first step involved modifying machinery guarding and improving the internal visibility of parts during machine operation. 2. The second step took traditional secondary process tasks performed manually outside the machine — de-burring, marking, cleaning — and incorporated these tasks into the machining effort to reduce potential operator hand injuries that could occur during interaction with the part. 3. Thirdly, the handling of production parts was improved with the use of parts catchers, modified forklifts, and new safer material lifting devices, further reducing the likelihood of other bodily injury. Implementation of “hands-free” machine and equipment improvements and enhanced process practices has allowed the facility to achieve over two million hours without a Recordable Injury (TRIR), over 9 million hours without a Days Away from Work Case (DAFWC), and a TRIR of less than 0.4 for the last 5 years.
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MacLeod, J. D., and W. Grabe. "Comparison of Coriolis and Turbine Type Flow Meters for Fuel Measurement in Gas Turbine Testing." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-070.

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The Machinery and Engine Technology (MET) Program of the National Research Council of Canada (NRCC) has established a program for the evaluation of sensors to measure gas turbine engine performance accurately. The precise measurement of fuel flow is an essential part of steady-state gas turbine performance assessment. Prompted by an international engine testing and information exchange program, and a mandate to improve all aspects of gas turbine performance evaluation, the MET Laboratory has critically examined two types of fuel flowmeters, Coriolis and turbine. The two flowmeter types are different in that the Coriolis flowmeter measures mass flow directly, while the turbine flowmeter measures volumetric flow, which must be converted to mass flow for conventional performance analysis. The direct measurement of mass flow, using a Coriolis flowmeter, has many advantages in field testing of gas turbines, because it reduces the risk of errors resulting from the conversion process. Turbine flowmeters, on the other hand, have been regarded as an industry standard because they are compact, rugged, reliable, and relatively inexpensive. This paper describes the project objectives, the experimental installation, and the results of the comparison of the Coriolis and turbine type flowmeters in steady-state performance testing. Discussed are variations between the two types of flowmeters due to fuel characteristics, fuel handling equipment, acoustic and vibration interference and installation effects. Also included in this paper are estimations of measurement uncertainties for both types of flowmeters. Results indicate that the agreement between Coriolis and turbine type flowmeters is good over the entire steady-state operating range of a typical gas turbine engine. In some cases the repeatability of the Coriolis flowmeter is better than the manufacturers specification. Even a significant variation in fuel density (10%), and viscosity (300%), did not appear to compromise the ability of the Coriolis flowmeter to match the performance of the turbine flowmeter.
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Atagi, Yuya, Yuya Akimoto, Fumiya Nagae, Kazuya Okawa, Yoshiyuki Iso, Ryosuke Ikeda, Yuuki Matsumi, and Masahiro Takei. "Development of Wireless Tomography System to Measure Solid-Liquid Flow in Rotating Body." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66934.

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A wireless tomography system has been developed to measure the real-time behavior of solid-liquid two phase flow in the centrifuge for controlling a rotational velocity and particle supply rate. The purpose of this study is development of real-time behavior of solid-liquid two phase flow measurement technique and image conductivity distribution in rotating body because a technique for measuring the behavior of solid-liquid two phase flow in the centrifuges has not existed yet. In this study, a device to measure wirelessly behavior of solid-liquid two phase flow in stationary body has developed as a preliminary to measure in rotating body. A centrifugation technology for industry process should be improved to obtain more effective separation, shorten process time and save energy. These requirements are achieved by optimizing rotational velocity and particle supply rate. The real-time measurement of behavior of solid-liquid two phase flow for controlling the rotational velocity and the particle supply rate is essential. In other words, the real-time behavior of solid-liquid two phase flow measurement and the rotational velocity control become innovative technologies. Typical behavior of solid-liquid two phase measurement technics with easy handling in particles liquid two-phase flow uses process tomography because the process tomography is suitable for real-time measurement in a rotating body. Process tomography has high temporal resolution. This detector was used with the wireless because electrical cables are not available for centrifuges under high speed rotational condition. This wireless tomography system was used for a lab scale rotating machinery measurement experiment. Consequently, we could wirelessly measure the behavior of solid-liquid two phase flow in stationary body in real time and get data to image the behavior of solid-liquid two phase flow. This result images the behavior of solid-liquid two phase flow. Observing it enable to control a rotational velocity and particle supply rate. So this wireless tomography system can separate solid-liquid two phase flow efficiently.
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Lemos, Daniel, Jean Marins, and Raone De Lima. "ESP and Completion Deployment using Dual Derrick Drill Ship Rigs." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206309-ms.

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Abstract This paper presents an innovative concept to run Electrical Submersible Pumps (ESP) and upper completion utilizing dual derrick drillship rigs in deep water wells. The availability of a second deck to assemble, test and rack long assemblies brings the possibility to conduct a safer, efficient and reliable operation. The experience in Brazil running complex completions and high horsepower ESPs shows how important is to implement initiatives to reduce rig time. The main objective of the new process is to have every completion tool readily available in the drilling deck, requiring minimum time to connect it to the completion string. In the standard process, the tool sits in the pipe deck until completion string reaches its set position and only then the equipment is brought into the rig floor to be serviced and made up to the completion string. The methodology to assemble ESP and completion tools offline in the auxiliary derrick was developed in partnership with the operator, the service company, and the drilling rig contractor. The offline preparation concept was considered as part of the completion design phase analyzing every step of the upper completion run, looking for efficiency improvement and reduced total rig time. The modern automated pipe handling system was used to manipulate the long and heavy assemblies from the auxiliary deck to the racking system and from the racking system to the main deck without any safety concern, and with minimal human intervention. Eight deep-water operations were completed in Brazil using the new concept and the results brought important rig time reduction in the upper completion running time. The tools that were part of the completion included DHSV, permanent downhole gauges, chemical injection valves, 1600 HP ESP system and tubing test valves. The new process allows the team to service equipment without the usual operation rush reducing installation related failure therefore increasing equipment reliability. The methodology presented on this paper contributes to oil industry as a field-proven reference for offshore ESP and completion deployment technique reducing HSE exposure and total well construction cost. This is particularly important for deep and ultra-deepwater projects which are associated with high intervention costs. Dual derrick rigs were designed with focus to improve drilling operations and after the new process development, the modern robotized machinery empowers ESP and completion activities with improved efficiencies.
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