Academic literature on the topic 'Foundry crane'

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Journal articles on the topic "Foundry crane"

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Kulka, Jozef, Martin Mantic, Gabriel Fedorko, and Vieroslav Molnar. "Failure analysis of increased rail wear of 200tons foundry crane track." Engineering Failure Analysis 67 (September 2016): 1–14. http://dx.doi.org/10.1016/j.engfailanal.2016.05.032.

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Kulka, Jozef, Martin Mantic, Eva Faltinova, Vieroslav Molnar, and Gabriel Fedorko. "Failure analysis of the foundry crane to increase its working parameters." Engineering Failure Analysis 88 (June 2018): 25–34. http://dx.doi.org/10.1016/j.engfailanal.2018.02.020.

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Prabowo, Rinaldi Sam, Priyo Agus Setiawan, Anda Iviana Juniani, Wiediartini, and Ika Erawati. "Reliability analysis of hanger shot blast KAZO machine in foundry plant." MATEC Web of Conferences 204 (2018): 03007. http://dx.doi.org/10.1051/matecconf/201820403007.

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In a metal casting industry, Hanger Shot Blast KAZO machine plays a very vital role for blasting. The downtime equipment data for the last five years, 2013 to 2017, shows that the hanger shot blast KAZO is the machine which frequently encounters downtime with the number of 503,75 hours. As the only blasting machine with 2 (two) tons of load capacity, the issues of hanger shot blast KAZO affect to the targeted production process of company. Moreover, it increases risk of safety for the workers surround the machine. The purpose of this current research is to find out the reliability value of the item/ component of hover shot blast KAZO machine using Reliability Analysis method. The malfunction of its component is reviewed by FMEA (Failure Mode and Effect Analysis). While the risk assessment is obtained from RPN (Risk Priority Number) calculation - MTTF value and reliability value R(t). The result of this current study found that there are 21 malfunctions on hanger shot blast KAZO machine. MTTF analysis shows the highest MTTF value is 9195,324 hours for bearing impeller component and the lowest is 3498,997 hours for motor components. Meanwhile, reliability analysis shows that the largest reliability value with 0.999915 is encountered by motor contactor of crane, while with a value of 0.26385, hanger rotator motor contactor component encountered the lowest reliability value.
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Dong, Qing, Bin He, and Gening Xu. "Fatigue Life Evaluation Method for Foundry Crane Metal Structure Considering Load Dynamic Response and Crack Closure Effect." Computer Modeling in Engineering & Sciences 122, no. 2 (2020): 525–53. http://dx.doi.org/10.32604/cmes.2020.08498.

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Popov, V. G., Z. K. Kabakov, and D. F. Gabtykaev. "Mathematical modeling of the heating of the metal structures of a foundry crane equipped with heat shields." Metallurgist 53, no. 11-12 (November 2009): 704–9. http://dx.doi.org/10.1007/s11015-010-9236-y.

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Stewart, John Massey. "The ‘lily of birds’: the success story of the Siberian white crane." Oryx 21, no. 1 (January 1987): 6–10. http://dx.doi.org/10.1017/s0030605300020421.

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In 1985 the Worldlife Fund's Gold Medal, its highest honour, was awarded to George Archibald, Director and co-founder with Ron Sauey of the International Crane Foundation at Baraboo, Wisconsin, which has achieved so much for the world's endangered cranes. Their most remarkable success story—and an outstanding example of international conservation efforts across political boundaries—is surely that of the beautiful Siberian white crane Grus leucogeranus. It is a story, too, of astonishingly recent discovery, as they told this writer on a recent visit to Baraboo.
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Baker, Marissa G., Christopher D. Simpson, Yvonne S. Lin, Laura M. Shireman, and Noah Seixas. "The Use of Metabolomics to Identify Biological Signatures of Manganese Exposure." Annals of Work Exposures and Health 61, no. 4 (January 18, 2017): 406–15. http://dx.doi.org/10.1093/annweh/wxw032.

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Abstract Objectives Manganese (Mn) is a known neurotoxicant, and given its health effects and ubiquitous nature in metal-working settings, identification of a valid and reproducible biomarker of Mn exposure is of interest. Here, global metabolomics is utilized to determine metabolites that differ between groups defined by Mn exposure status, with the goal being to help inform a potential metabolite biomarker of Mn exposure. Methods Mn exposed subjects were recruited from a Mn steel foundry and Mn unexposed subjects were recruited from crane operators at a metal recycling facility. Over the course of a work day, each subject wore a personal inhalable dust sampler (IOM), and provided an end of shift urine sample that underwent global metabolomics profiling. Both exposed and unexposed subjects were divided into a training set and demographically similar validation set. Using a two-sided adjusted t-test, relative abundances of all metabolites found were compared between Mn exposed and unexposed training sets, and those with a false discovery rates (FDR) <0.1 were further tested in the validation sets. Results Fifteen ions were found to be significantly different (FDR < 0.1) between the exposed and unexposed training sets, and nine of these ions remained significantly different between the exposed and unexposed validation set as well. When further dividing exposure status into ‘lower exposure’ and ‘higher exposure’, several of these nine ions exhibited an apparent exposure–response relationship. Conclusions This is the first time that metabolomics has been used to distinguish between Mn exposure status in an occupational cohort, though additional work should be done to replicate these findings with a larger cohort. With metabolite identification by name, empirical formula, or pathway, a better understanding of the relationship between Mn exposure and neurotoxic effects could be elucidated, and a potential metabolite biomarker of Mn exposure could be determined.
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Brown, M. E., S. J. Converse, J. N. Chandler, A. L. Crosier, W. Lynch, D. E. Wildt, C. L. Keefer, and N. Songsasen. "Time within reproductive season, but not age or inbreeding coefficient, affects seminal and sperm quality in the whooping crane (Grus americana)." Reproduction, Fertility and Development 29, no. 2 (2017): 294. http://dx.doi.org/10.1071/rd15251.

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All living whooping cranes (Grus americana) are descended from 16 or fewer birds that remained alive in the early 1940s, a bottleneck that puts the species at potential risk for inbreeding depression. Although AI is commonly used in the management of the captive population of this species, little is known about seminal traits or factors affecting sperm quality in the whooping crane. In the present study, semen samples were collected from 29 adult males (age 3–27 years) during the early (March), mid (April) and late (May) breeding season over 2 consecutive years. The effects of donor age, time within reproductive season and level of inbreeding on seminal characteristics were analysed using regression and information–theoretic model selection. Only time within reproductive season significantly affected seminal traits, with total numbers of spermatozoa and proportions of pleiomorphisms increasing across the season. We conclude that, even with a highly restricted number of founders, there is no discernible influence of inbreeding (at the levels described) on sperm output or quality. Furthermore, although there is variance in seminal quality, the whooping crane produces significant numbers of motile spermatozoa throughout the breeding season, similar to values reported for the greater sandhill crane (Grus canadensis tabida).
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He, Kong De, Zi Fan Fang, Da Lin Zhu, and Wei Hua Yang. "The Control System Model of Gantry Crane for Preventing Swing." Applied Mechanics and Materials 135-136 (October 2011): 1013–19. http://dx.doi.org/10.4028/www.scientific.net/amm.135-136.1013.

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This paper aimed at the phenomenon of swing which caused by inertia force and outer loads when gantry crane worked, the dynamical equation and state space equation were founded based on Lagrange, analyzed the swing phenomenon by LQR linearity secondary optimal control method, and simulated the equation by MATLAB software, through the results, the conclusion can be got that this method could reduce time for crane swing and improve the precision of orientation and working efficiency, this method had important meaning for improve the security and working efficiency for gantry crane, which can be extended to other crane too.
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Matsubayashi, Makoto, Kazutoshi Takami, Niichiro Abe, Isao Kimata, Hiroyuki Tani, Kazumi Sasai, and Eiichiroh Baba. "Molecular characterization of crane Coccidia, Eimeria gruis and E. reichenowi, found in feces of migratory cranes." Parasitology Research 97, no. 1 (June 7, 2005): 80–83. http://dx.doi.org/10.1007/s00436-005-1404-9.

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Dissertations / Theses on the topic "Foundry crane"

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Sláma, Ondřej. "Jeřábová kočka 360 t." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377477.

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The topic of this diploma thesis is the frame of the foundry crane with load capacity 360 t. The frame is analysed by strength inspection and fatigue strength inspection according to norm ČSN EN 13001. The analysis are made by using finite element method on shell model. The diploma thesis was made in cooperation with Královopolská a.s. company.
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Otevřel, Marek. "Rám kočky 330 t mostového licího jeřábu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232036.

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The topic of this diploma thesis is the frame of the foundry trolley crane 330/65/20t. The crane crab is used for handling with molten metal. The frame is analyzed by strength inspection and fatigue strength inspection. The process is according to ČSN EN 13001. The analyses are made by using finite element method on a beam and shell models. The diploma thesis was made in cooperation with the Královopolská a.s. company.
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Books on the topic "Foundry crane"

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ill, Flint Russ, and Pingry Patricia A. 1941-, eds. The legend of Sleepy Hollow: Found among the papers of the Late Diedrich Knickerbocker. Nashville, Tenn: CandyCane Press, 1999.

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Washington, Irving. The Legend of Sleepy Hollow: Found among the papers of the late Diedrich Knickerbocker. Honesdale, Pa: Caroline House, 1992.

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Gumpert, David E. How to really start your own business: A step-by-step guide featuring insights and advice from the founders of Crate & Barrel, David Cookies, Celestial Seasonings, Pizza Hut, Silicon Technology, Esprit Miami. 2nd ed. Boston: Inc. Magazine, 1994.

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Gumpert, David E. Inc. magazine presents how to really start your own business: A step-by-step guide featuring insights and advice from the founders of Crate & Barrel, David's Cookies, Celestial Seasonings, Pizza Hut, Silicon Technology, Esprit Miami. 3rd ed. Boston, MA: Inc. Pub., 1996.

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Gumpert, David E. Inc. magazine presents how to really start your own business: A step-by-step guide featuring insights and advice from the founders of Crate & Barrel, David's Cookies, Celestial Seasonings, Pizza Hut, Silicon Technology, Esprit Miami. 2nd ed. Boston: Inc. Pub., 1994.

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Gumpert, David E. Inc. magazine presents how to really start your own business: A step-by-step guide featuring insights and advice from the founders of Crate & Barrel, David's Cookies, Celestial Seasonings, Pizza Hut, Silicon Technology, Esprit Miami. Boston, MA: Inc. Pub., 1991.

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Life and Times of Charles R. Crane, 1858-1939: American Businessman, Philanthropist, and a Founder of Russian Studies in America. Lexington Books/Fortress Academic, 2012.

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Hadjiafxendi, Kyriaki, and John Plunkett. Science at the Seaside. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198795155.003.0010.

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This chapter argues that the scientific and imaginative appeal of the Devon coast in the mid-Victorian period played a key role in the development of popular science and, more particularly, marine biology. It also played an important part in the tourist development of resorts such as Ilfracombe and Torquay. The publications of Philip Henry Gosse, Charles Kingsley, George Tugwell, and George Henry Lewes, among others, helped to encourage a fascination with the littoral space of the seashore, and the exotic creatures that could be found there. As a leisure pursuit, natural history combined pleasure, curiosity, and spectacle with an enlightenment desire to better understand the surrounding world. The popularity of seaside science was given a further boost by the refinement of the marine aquarium by Gosse; their domestic display became a fashionable craze of the 1850s.
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Gumpert, David E. How to Really Start Your Own Business: A Step-By-Step Guide Featuring Insights and Advice from the Founders of Crate & Barrel, David's Cookies, Cele. Inc. Publishing, 1994.

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(Illustrator), Michael Garland, ed. The Legend of Sleepy Hollow: Found Among the Papers of the Late Diedrich Knickerbocker. Caroline House, 1996.

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Book chapters on the topic "Foundry crane"

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Rynbrandt, Linda J. "Conclusion: Beyond Women Lost and Found." In Caroline Bartlett Crane and Progressive Reform, 123–43. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781315861111-8.

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de Staël, Madame. "Book IX." In Corinne. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199554607.003.0010.

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Chapter I It was the day of the most boisterous festival of the year at the end of the carnival, when the Roman people are seized with a kind of feverish desire for merrymaking, a craze for amusement not to be found elsewhere. The...
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Wilk, Stephen R. "Perspective Machines, Zograscopes, Megalethoscopes, and Boites d’Optiques." In Sandbows and Black Lights, 177–78. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197518571.003.0039.

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In the 18th century, there was a craze for special viewing devices that used large lenses, through which viewers looked at engraved scenes. It was claimed that such devices could produce a lively and almost three-dimensional image. But how could they get a stereo effect with only a single picture and a single lens, and no way to provide perspective information? Several such elaborate and expensive items can still be found in several museums.
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Mandal, Prosun. "Optimization of Surface Roughness in Centreless Grinding Process Based on Taguchi Method." In Advances in Civil and Industrial Engineering, 37–47. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7206-1.ch004.

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This chapter aims to optimize centreless grinding conditions using the Taguchi method for minimizing surface roughness. The grinding operation has been performed according to the L9 orthogonal array in a centreless grinding process. The centreless grinding experiments are carried out on the crane-hook pin of C40 steel. The analysis of variance (ANOVA) and computation of signal to noise (S/N) ratio are adopted to determine the influence of grinding parameters (depth of cut [µm], regulating wheel speed [rpm], and coolant valve opening) on surface roughness. The depth of cut (µm) is found to be the most significant among the grinding parameters on the surface roughness. The signal to noise (S/N) ratio was calculated based on smaller the best criteria. The lower level of depth of cut, medium level of regulating wheel speed, and higher-level coolant valve opening is found to be optimal grinding condition according to the mean response and signal to noise (S/N) ratio.
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Husted, Ursula Murray. "Koan." In When Birds Are Near, 109–13. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501750915.003.0014.

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This chapter illustrates how the author spent nights alone by Lake Wingra listening for short-eared owls and whip-poor-wills. After and before work, the author spent time drawing on the University of Wisconsin terrace, watching ducks raise their ducklings and pelicans stopping to rest on their journeys north. The chapter also describes how the author heard on the radio that the big pelican migration would be coming through Horicon Marsh. The author called in sick and drove northeast on U.S. Highway 151. However, she found out that she had missed the pelicans. Instead, she saw a flock of sandhill cranes, as well as red-winged blackbirds.
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Hough, Susan Elizabeth, and Roger G. Bilham. "Earthquakes and Ancient Cities: Armageddon—Not the End of the World." In After the Earth Quakes. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195179132.003.0004.

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The reduction of an entire city to a pile of rubble poses a special problem for the survivors. Roads are blocked, underground pipes are broken, and disease accompanies the decay of incompletely buried bodies. Fresh water and sewage no longer flow, food becomes scarce, and the absence of shelter from extremes of temperature can make life miserable. In the cities of the ancient world a very real practical problem followed in the months and years after the destruction of a city—a cleanup operation beyond the wildest dreams of the survivors. Although steam shovels had been used for moving heavy materials in building the Suez and Panama canals in 1869 and 1910, respectively, it was not until 1923 that the bulldozer was invented. The even more useful backhoe followed 25 years later. Thus, clearing debris was a daunting task as recently as the 1906 San Francisco earthquake. In his book The City That Is: The Story of the Rebuilding of San Francisco in Three Years, Rufus Steele wrote of the rebuilding effort: . . . First the ground had to be cleared. The task would have baffled Hercules— cleaning out the Augean stables was the trick of a child compared to clearing for the new city. This is a step in the rebuilding which fails entirely to impress the visitor of today. He can form no conception of the waste which had to be reduced to bits and then lifted and carted away to the dumping grounds. The cost of removing it was more than twenty million dollars. . . . Lacking what we would now consider modern machinery to move large volumes of debris, the rebuilders of San Francisco extended railway lines across town, brought in steam and electric cranes, and relied heavily on teams of horses that suddenly found themselves in enormous demand. According to Steele, “Huge mechanical devices for shoveling and loading were invented and set to work.” Formidable as the task may have been, San Francisco tapped into several critical resources in its Herculean efforts: trains, cranes, and, perhaps most important, large numbers of survivors following an earthquake that killed a very small fraction of the local population.
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Gussow, Adam. "Langston Hughes and the Scandal of Early Blues Poetry." In Whose Blues?, 128–50. University of North Carolina Press, 2020. http://dx.doi.org/10.5149/northcarolina/9781469660363.003.0007.

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The history of the blues is, among other things, a history of commentators who lament the appropriation, commercialization, dilution, sexing-up, and other misuse of the blues. Early blues scholar Howard Odum wrote about the blues in this way, decrying the “filth” propagated by the “depraved” Negro blues singers of Lafayette County, Mississippi. Langston Hughes, America’s first great Black blues poet, would later lament that popular theatre had “taken my blues and gone,” but he too, as a young and insurgent poet, was castigated by the Black press of his time as the “poet low-rate of Harlem” for having dared to depict his blues people with their bawdy, sometimes violent vitality intact. Focusing on Hughes’s key early poem, “The Weary Blues” (1925), this chapter seeks the source of his greatness as a blues translator—somebody who sensed power of blues lyricism and performance was located and found ways of conveying that power on the printed page, inventing blues literature in the process. This chapter also explores the so-called “blues craze” of the 1920s: the sudden emergence of a mass African American audience for race records on the heels of Mamie Smith’s “Crazy Blues” (1920), followed by broader cultural participation.
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"Advanced Augmented Reality TAPS Software for Visualizing 4BL Mechanisms with Touch to Print Technique." In Advanced Technology-Assisted Problem Solving in Engineering Education, 194–248. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0465-9.ch008.

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Many learning methods have changed the way students learn. One method that is achieving much attention is augmented reality (AR). AR is a technology that blends simulated and real environment during the learning, interaction, and visualization process. As such, an AR ATAPS with a new interaction technique (touch-to-print) was designed, tested, and evaluated. The aim was to provide an improved user interface i.e. without having to use markers so as the learner could focus more on the visualization process. The AR ATAPS is capable of recognizing the 4BL mechanisms (based on Grashof's law and user input data) (i.e., drag-link, crank-rocker, double-rocker, and parallelogram linkage) and have been used in this study as an adjunct to traditional problem-solving method. The touch to print interaction technique, which is the main contribution of this research, has been useful to engage the user in the problem with a new interactive and learning experience as compared to the previous method (i.e., the use of markers to interact with a virtual object). The interaction technique method uses seven functions that are recognizable by the ATAPS (rotational, link colour change A, B, C, D, pause and voice command) for the user to touch the symbols on the paper and the system to model and analyze accordingly in real-time 3D environment. This study explores how far AR technology has come to support students in their learning and interest in using this technology. The objective of this chapter was to determine the usefulness of touch to print interaction user interface for an AR application. A hands-on practical lab was conducted with first year engineering students at UNITEN. The evaluation and effectiveness of the AR ATAPS as an alternative to textbooks and current software learning packages was examined by means of a single-institutional evaluation study using mainly statistical quantitative techniques and ANOVA analysis. The prospective study (total sample size = 30) at University Tenaga Nasional (UNITEN) validated aspects of AR ATAPS interaction technique and provided feedback on the interface design and its problem-solving method. The results of the study showed that most of the participants never been experienced with AR applications before, but the ideas of implementing AR as a simulation tool for learning the kinesthetic and dynamic subjects is well accepted with a very beneficial feedback. Based on the findings, it was found that there is a positive changing in terms of the visualizing and imagining of the four-bar linkage mechanisms (4BL) which led to a good understanding of this subject. Further development of AR applications in the learning environment is being discussed.
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Conference papers on the topic "Foundry crane"

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Mileh, I., and Dewa Bayu Miarta. "Taboo Words Found in Crank High Voltage Movie Script." In Proceedings of the First International Seminar on Languare, Literature, Culture and Education, ISLLCE, 15-16 November 2019, Kendari, Indonesia. EAI, 2020. http://dx.doi.org/10.4108/eai.15-11-2019.2296242.

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Yildirim, Halid Can, Gary B. Marquis, and Per J. Haagensen. "Experimental Verification of HFMI Treatment of Large Structures." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23764.

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Design recommendations for high frequency mechanical impact (HFMI)-treated welds have been proposed based on available experimental fatigue data of axially-loaded high strength steel specimens which include longitudinal, cruciform and butt welds. Test specimens were of a size appropriate for laboratory study. However, in reality, structures in civil, offshore and ship industries generally include large-scale and more complicated components, such as bridges, cranes, platforms, excavators etc. This paper presents a further validation of the design proposals by considering fatigue data sets which are obtained from large-scale components. The extracted fatigue data from the available literature includes bridge, crane and beam like components. In total, 65 published test results of weld details with various yield strengths (250 ≤ fy ≤ 725 MPa) and stress ratios (−1 ≤ R ≤ 0.56) are presented. All the data are found to be in good agreement with the previously-shown design curves.
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Zhao, Yuna, Zhengshun Cheng, Zhen Gao, and Torgeir Moan. "Effect of Foundation Modeling of a Jack-Up Crane Vessel on the Dynamic Motion Response of an Offshore Wind Turbine Blade During Installation." In ASME 2018 1st International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/iowtc2018-1010.

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Nowadays, there is an increasing demand for use of jack-up crane vessels to install offshore wind turbines. These vessels usually have shallow soil penetration during offshore crane operations because of the requirement of frequent repositioning. The soil-structure interaction should thus be properly modeled for evaluating the motion responses, especially at crane tip at large lifting height. Excessive crane tip motion affects the dynamic responses of the lifted components and subsequently affects the safety and efficiency of operations. The present study addresses the effects of soil behaviour modeling of a typical jack-up crane vessel on the dynamic motion responses of a wind turbine blade during installation using a fully coupled method. The coupled method account for wind loads on the blade and the vessel hull, wave loads on the vessel legs, soil-structure interaction, structural flexibility of the vessel legs and crane, and the mechanical wire couplings. Three models for the soil-leg interactions and two soil types are considered. The foundation modeling is found to have vital effects on the system dynamic motion responses. The characteristics of system motion differ under different types of soil. Compared to the combined linear spring and damper model, the simplified pinned and fixed foundations respectively lead to significant overestimation and underestimation of the motion responses of the blade during installation by jack-up crane vessels. To ensure safe and efficient offshore operations, detailed site specific soil properties should be used in numerical studies of offshore crane operations using jack-up crane vessels.
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Abdel-Rahman, Eihab M., and Ali H. Nayfeh. "Feasibility of Two-Dimensional Control for Ship-Mounted Cranes." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21454.

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Abstract We test the feasibility of employing an exclusively planar control effort to suppress unsafe ship-mounted crane pendulations induced by sea motions. The new crane configuration, designed to apply the control effort, is modeled and the proposed control effort, employing Coulomb friction and viscous damping, is applied. The three-dimensional nonlinear dynamics of the crane is then investigated. The new crane configuration, dubbed Maryland Rigging, transforms a crane from a single spherical pendulum to a double pendulum system. The upper pendulum, a pulley riding on a cable suspended from the boom, is constrained to move over an ellipsoid. The major axis of the ellipsoid is the boom and the foci are the two points at which the riding cable attaches to it. The lower pendulum, the payload suspended by a cable from the pulley, continues to act as a spherical pendulum. Due to the geometry of the ellipsoid, the natural frequencies of the crane in the plane of the boom (in-plane) are almost equal to the out-of-plane natural frequencies. The model is used to examine the response of a Maryland rigged crane to direct, in-plane, harmonic forcing. The frequency of the excitation is set almost equal to the crane’s lowest natural frequency. It is found that under this excitation and due to the one-to-one internal resonance between the lowest in-plane and out-of-plane natural frequencies, significant out-of-plane motions are induced by applying a purely in-plane forcing. Thus an in-plane control mechanism is not adequate for safe operation of the crane. To guarantee safe operation of a ship-mounted crane, one must apply both in-plane and out-of-plane control efforts.
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Nordvik, Andreas, Natalia Khan, Roberto Andrei Burcă, and Thomas J. Impelluso. "A Study of Roll Induced by Crane Motion on Ships: A Case Study of the Use of the Moving Frame Method." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70111.

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This paper presents a new method in dynamics — The Moving Frame Method (MFM) — and applies it to analyze the roll, yaw and pitch of a ship at sea, as induced by an onboard moving crane. The MFM, founded on Lie Group Theory, Cartan’s Moving Frames and a compact notation from geometrical physics, enables this expedited extraction of the equations of motion. Next, the method deploys the power of the special Euclidean Group SE(3) and a restricted variation to be used in Hamilton’s Principle, to extract the equations of motion. The mathematical model is then simplified to get a clearer picture of the parameters that impact the motion of the crane. The equations of interest are numerically solved by using fourth order Runge-Kutta method to obtain the specific data for the motion induced by the crane. Then, The Cayley-Hamilton theorem is used to reconstruct the rotation matrix. To supplement the paper, a webpage is coded with a model of the crane and ship, to graphically visualize the motion in 3D. It is imperative to note that while there are many approaches to dynamics, the MFM presents a consistent method, from 2D to 3D, and across sub-disciplines. The simplification is what has enabled undergraduate students to undertake this project.
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Chan, Hoi-Sang, Evren Armaoğlu, Matthew Thomson, and Alistair Garner. "Behaviour of a Suspended Wellbay Module and Flare Tower in Waves During Transit to Shore." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95001.

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Abstract The extended lift operation to deliver the Wellbay module (M5) combined with the Flare Tower (M8) from the Miller Platform in the North Sea to the shore using the Semi-Submersible Crane Vessel S7000 was restricted by the clearances between M5/M8 and the vessel crane booms. A method to calculate the clearances of the M5/M8 normal to the vessel crane booms has been developed and used in a frequency-domain response analysis to define operability limits. Investigations based on a series of scale model tests in regular waves and irregular short-crested waves including motion decay tests in calm water, conducted by the Maritime Research Institute (MARIN) in the Netherlands, were also made to further evaluate the behaviour of the suspended M5/M8 on S7000’s main hooks during transit. The time series of decay motions of the suspended M5/M8 obtained from the decay motion tests and a time domain analysis are compared and used to derive rigging damping. The numerical results of the frequency-domain analysis are validated with the experimental data for response amplitude operators (RAOs) found in regular waves and pink noise waves, significant and 3 hour most probable maximum/minimum (MPM) responses of interest in irregular waves.
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7

Woo, Seong-Woo, Dennis L. O’Neal, and Yongchan Kim. "Reliability Design and Case Study of a Refrigerator Compressor Subjected to Repetitive Loads." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41035.

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A newly designed crank shaft of a compressor for a side-by-side (SBS) refrigerator was studied. Using standard mass and energy conservation balances, a variety of compressor loads typically found in a refrigeration cycle were analyzed. The laboratory failure modes and mechanisms were compressor locking and crank shaft wear. These were similar to those of the failed samples in the field. Failure analysis, accelerating life testing (ALT), and corrective action were used to identify the key reliability parameters and their level. The design parameters of the crank shaft included the hole locations and the groove of the crank shaft used for oil lubrication, crank shaft hardness, and thrust washer interference. Based on the analysis and design changes, the B1 life of the new design is now over 10 years with a yearly failure rate of 0.01 percent. A procedure was recommended for refrigerator parts design which included five steps.
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8

Lee, Shyr Wen, and David G. Beale. "Periodic Response and Stability of Flexible Rod Slider Crank Mechanism." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0396.

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Abstract Periodic steady state solutions are generated from the nonlinear differential equation of an Euler-Bernoulli beam rod, constant speed crank, slider crank mechanism. The system is approximated by a single ordinary differential equation. To facilitate Harmonic Balance, the response and difficult nonlinear and linear portions of the ODE are expanded into two separate Fourier Series. Harmonic Balance/Fast Fourier Transform method is utilized to determine the harmonic content of each Fourier Series and generate periodic solutions which compared favorably with Runge-Kutta numerical integration. Stability of periodic solutions was examined using the monodromy matrix method. Nondimensional amplitude versus nondimensional crank speed was plotted to examine the effect on dynamic response of external force, piston mass, and crank length. Jump and period doubling bifurcations and regions of amplified response were found.
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Haselsteiner, Andreas F., Jan-Hendrik Ohlendorf, Stephan Oelker, Lena Ströer, Klaus-Dieter Thoben, Katharina Wiedemann, Emmanuel De Ridder, and Sven Lehmann. "Lifting Wind Turbine Components From a Floating Vessel: A Review on Current Solutions and Open Problems." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78659.

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Offshore wind energy is experiencing rapid development and is expected to make up an even bigger part of the worlds future energy mix. New installation concepts for offshore wind farms involve lifting operations of wind turbine components from floating vessels. These installation concepts will only be economic if the lifting operations are performed safely at sea states with high significant wave heights. In this paper, we give an overview of current technical solutions, which could be used to lift the components tower, nacelle, hub and rotor blade from a floating vessel. We classify and analyze solutions found in patents and the academic literature and point out open problems, which need to be addressed to enable lifting operations at higher sea states than what is currently feasible. While enhancements on the vessel and crane can help to achieve this goal as well, this paper only deals with technical solutions concerning the interface between the vessel and the component as well as the interface between the component and the crane. Consequently, we analyze, classify and discuss solutions for the seafastening, the lifting gear as well as motion compensation systems. We find that there exists a large number of solutions, which are specific for a single component, but few solutions, which are applicable to all components without adaptations. Additionally, we miss hydraulic seafastening mechanisms, which are remotely controlled and synchronized with the lifting operation. Consequently, we argue that standardized interfaces between the component and the crane as well as remotely controlled and synchronized seafastening mechanisms are best suited to enhance the lifting process.
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Velema, Jorick, and Job Bokhorst. "Lift Installation of a Subsea Oil Storage Tank: A 60,000mT Pendulum." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42191.

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In August 2014 Heerema Marine Contractors (HMC) have successfully installed the Solan Subsea Oil Storage Tank (SOST), using its Semi-Submersible Crane Vessel (SSCV) Thialf. The SOST installation is regarded as unique due to its dimensions, complex hydrodynamics and the utilization of nearly the full crane capacity. The Solan SOST is a Subsea Oil Storage Tank with a future storage capacity of 48,000 m3 of oil. The SOST has a dimension of 45m × 45m × 25m, a dry weight of 9,500mT and a total submerged mass of 60,000mT including ballast water. It was installed offshore west of the Shetland Islands at a depth of 135m. Prior to installation the SOST was wet-towed to the field. At location the SOST was installed by a dual crane lift sequence, lowering the SOST from 2m freeboard to the seabed. The lowering sequence is characterized by the usage of a compressible air pocket to reduce hookloads during the most critical stage of the installation, the lowering of the SOST through the splash zone. Prior to the installation ballast and dynamic lift models were generated to understand both the hydrostatics and hydrodynamics of the SOST - SSCV Thialf system throughout the installation. Numerical simulations of the flooding operation were performed to predict all relevant parameters for various scenarios. The lift dynamics were analysed with frequency domain models. Most resonance modes between SSCV Thialf and SOST were found not to be excited due to the differences in natural periods of the hydrodynamic systems and the occurring wave periods. During installation vital parameters such as ballast volume, compartment fill rates, differential pressure and hookloads were continuously monitored with dedicated measurement systems. The values were compared with the results from the engineering models. As some of the parameters were directly related to each other, the values could be back-calculated and cross-checked, thereby increasing the reliability of the measurements. Both the understanding of the principle hydrostatics and hydrodynamics of the system as well as the close monitoring of all vital parameters have resulted in a safe and controlled installation of the Solan SOST by the SSCV Thialf; the installation of a 60,000mT dual crane pendulum. This paper describes the hydromechanic engineering work performed by HMC and the SOST offshore installation.
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Reports on the topic "Foundry crane"

1

Barzen, Jeb, and Ken Ballinger. Sandhill and Whooping Cranes. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, January 2017. http://dx.doi.org/10.32747/2017.7207736.ws.

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As sandhill crane populations continue to grow in the United States, so too does crop damage, property damage to homeowners, and the risk of crane collisions with aircraft. Whooping crane populations also continue to grow, but with a global population of about 500 individuals (as of 2017), damage is rare and problems often require different solutions due to the species’ endangered status. The sandhill crane (Grus canadensis), is a long-lived, member of the crane family (Gruidae) and the most numerous of the 15 crane species found worldwide. Over the last 50 years, the species has grown from a rarity─ requiring extensive protection─ to an abundant, widespread species. As their populations have increased, so too have their conflicts with people. Both sandhill and whooping cranes are protected under the Migratory Bird Treaty Act (MBTA) of 1918. This law strictly prohibits the capture, killing, or possession of sandhill and whooping cranes without proper permits. However, the U.S. Fish and Wildlife Service (USFWS) can issue depredation permits under this act for the shooting of sandhill cranes that causeagricultural damage or threaten human health and safety. No federal permit is required to use non-lethal management methods to reduce damage by sandhill cranes.
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