Academic literature on the topic 'Magnetic tape industry'

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Journal articles on the topic "Magnetic tape industry"

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Nikles, David E., and Alan M. Lane. "Waste minimization in the magnetic tape industry: Waterborne coating formulations for magnetic tape manufacture." Waste Management 14, no. 3-4 (1994): 353–54. http://dx.doi.org/10.1016/0956-053x(94)90119-8.

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Cheng, Song, Hong Fan, Naveen Gogineni, et al. "Pollution prevention in the magnetic tape industry: Waterborne coating formulations for video tape manufacture." Waste Management 15, no. 4 (1995): 257–64. http://dx.doi.org/10.1016/0956-053x(95)00030-4.

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Morton, David L. "“The Rusty Ribbon”: John Herbert Orr and the Making of the Magnetic Recording Industry, 1945–1960." Business History Review 67, no. 4 (1993): 589–622. http://dx.doi.org/10.2307/3116805.

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John Herbert Orr (1911-84) was an Alabama entrepreneur who formed Orradio Industries, Inc., a pioneering hightechnology firm that made magnetic recording tape. In 1945, Orr was among the U.S. Army Intelligence officials who investigated this technology, which was originally developed in Germany during the 1930s. Orr's early knowledge allowed him to establish Orradio in 1949 on a shoestring budget and to make it competitive with larger firms. When, after some uncertainty, tape became the standard medium for magnetic recorders, and as other uses such as data storage and videotape appeared, Orradio's sales expanded rapidly in the late 1950s. The company was purchased by a larger competitor, the Ampex Corporation, in 1959. The history of Orradio illustrates some of the technological, organizational, and locational problems associated with the establishment of a small high-technology firm in a new industry.
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Van Nort, Doug. "Multidimensional Scratching, Sound Shaping and Triple Point." Leonardo Music Journal 20 (December 2010): 17–18. http://dx.doi.org/10.1162/lmj_a_00005.

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The author discusses performance utilizing his greis software system, which is built around the principle of a “scrubbing” interaction with roots in the recording industry and the paradigm of scrubbing tape across a magnetic head.
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dos Santos, Dayse Iara, Durval Rodrigues, Elisabete A. A. Rubo, and Eliana Cursino. "Monofilamentary Ag/Bi:2212 Tapes – Effects of Silver Powder Addition." Materials Science Forum 498-499 (November 2005): 316–18. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.316.

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The Bi-Sr-Ca-Cu-O system has been one of the most studied superconducting ceramic materials for industry applications. The most of the studies with this aim are on silver/ceramic composites, due to the benefits and great compatibility of this metal with the oxide. Tapes made by the powder in tube (PIT) method have been successfully tested in pilot power plants in many countries but in Brazil. In this paper, 5, 10, and 20-wt% silver powders are introduced to compose the core of the tape along with the Bi:2212 ceramic powder. The results of electrical experiments are compared with those made with no silver addition Ag tapes. The best current density, at 60 K and no applied magnetic field, was found for the 10-wt% silver proportion, doubling the value obtained for the tape with no silver in the core.
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De Vries, Denise, and Craig Harrington. "Recovery of heritage software stored on magnetic tape for Commodore microcomputers." International Journal of Digital Curation 11, no. 2 (2017): 76–86. http://dx.doi.org/10.2218/ijdc.v11i2.386.

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Digital games make up a significant but little known chapter in the history of the moving image in Australia and New Zealand. Beginning in the early 1980s, the Australasian software industry developed a remarkable record of content creation. The ``Play It Again'' project is conducting research into the largely unknown histories of 1980s game development in Australia and New Zealand, ensuring that local titles make it into national collections and are documented and preserved, enabling the public to once again play these games. Microcomputers from the 1980s made extensive use of compact audio cassettes to distribute software as an inexpensive alternative to the floppy disk technology available at the time. Media from this era are at risk of degradation and are rapidly approaching the end of their lifespan. As hardware platforms and peripheral devices become obsolete, access to the data for future scholars and other interested parties becomes more difficult. In this article, we present a case study, wherein we investigate the issues involved in making digital copies with a view to the long term preservation of these software artefacts. A video game title stored on standard compact cassette for Commodore's popular VIC-20 machine, ``Dinky Kong'' by Mark Sibley was recorded using both inexpensive amateur and professional playback equipment. The audio files obtained were processed using freely available software, alongside a customised decoder written in MATLAB and Perl. The resulting image files were found to be playable using an emulator. More importantly, the integrity of the data itself was verified, by making use of error detection features inbuilt to the Commodore tape format, which is described in detail. Issues influencing the quality of the recovered image files such as the bit rate of the digital recording are discussed. The phenomenon of audio dropout on magnetic tape is shown be of some concern, however there exist signal processing techniques to compensate for such errors. The end result of the imaging process was a file compatible with a popular Commodore VIC-20 emulator, the integrity of which was verified by using inbuilt checksums.
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Skoufis, John, Cary Africk, and Douglas Cooper. "Low-Contamination Fabric Tapes for Disk Polishing, Texturing, and Buffing." Journal of the IEST 40, no. 3 (1997): 28–32. http://dx.doi.org/10.17764/jiet.2.40.3.f85644u1g8717060.

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Fabric tapes are used in many areas of magnetic media (thin-film disk) preparation in the data storage industry: polishing, texturing, and lube buffing. Tapes are more commonly used than pads for such applications, partly because the continuous supply of new tape during operation provides improved uniformity in comparison to the inherent discontinuities involved in pad conditioning/use/conditioning/use. (Simple modeling shows tapes tend to produce more uniform material removal than pads, although this is not universally true.) An important quality issue (in addition to reproducibility, uniformity, and planarity) is contamination control. Contamination by particles will be even more important as slider flying heights are reduced. Molecular contaminants are also important because some species can lead to the loss of lubricant on areas of the disk. Ionic species adsorb water preferentially from the air and thus can accelerate corrosion. Steps taken to minimize fabric contamination include careful selection of starting materials, control of the processing environment and processing variables, and cleaning the fabrics before they are made into tapes. New tape materials are likely to give new operating options, as well as new quality control problems, and some of these are discussed.
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Wen, Weijia, Ning Wang, D. W. Zheng, C. Chen, and K. N. Tu. "Two- and Three-dimensional Arrays of Magnetic Microspheres." Journal of Materials Research 14, no. 4 (1999): 1186–89. http://dx.doi.org/10.1557/jmr.1999.0159.

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A novel fabrication approach for two- and three-dimensional arrays of magnetic microspheres is presented in this paper. The magnetic microsphere is made from 47 μm size Al2O3 spheres onto which a 2–3 μm thick nickel layer is coated through electroless plating. After proper anneal, the outer nickel layer is converted to exhibit a crystalline structure. As an example for utilizing such magnetic microspheres, a two-dimensional, anisotropically conductive matrix is made by transferring the magnetic microsphere array from a template to a transparent adhesive tape using a magnetic attractive force. In addition, a three-dimensional array has also successfully been constructed on a metal plate. The two-dimensional conductor array may be useful for high-density circuit packaging applications in the semiconductor industry, and the three-dimensional array may open up a possibility for constructing three-dimensional photonic crystals.
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Homola, A. M., C. M. Mate, and G. B. Street. "Overcoats and Lubrication for Thin Film Disks." MRS Bulletin 15, no. 3 (1990): 45–52. http://dx.doi.org/10.1557/s0883769400060176.

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Metallic alloy thin film media and ever decreasing head-to-media spacing make severe demands on storage devices. Decreasing head-to-media separation is critical for high storage densities but it also leads to increased slider-disk interactions, which can cause slider and disk wear or even head crashes. Wear can also occur when drives start and stop when the slider contacts the disk at relatively high speeds. The reliability and durability of thin film disks, which provide much higher areal density than conventional oxide disks with particulate media, are achieved by the use of very thin overcoat materials and surface lubricants. This article summarizes the approaches taken in the industry to enhance the tribological performance of magnetic media, with special emphasis on the basic understanding of the processes occurring at the slider-disk interface.The continuous rise in the demand for storage capacity at a competitive price is the prime motivator of the changes we have seen in the data storage industry. It is clearly stimulating the present move away from particulate media, which has long dominated all fields of data storage, i.e., tape, rigid, and flexible disks, to the thin film storage media. Particulate storage devices use magnetic media formulated by dispersing magnetic particles, usually iron oxides, in an organic binder. In thin film storage devices, the storage medium is a continuous magnetic film, usually a cobalt alloy, made either by sputtering or by electroless plating.
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Meshalkin, Valerii P., and Alexey V. Belyakov. "Methods Used for the Compaction and Molding of Ceramic Matrix Composites Reinforced with Carbon Nanotubes." Processes 8, no. 8 (2020): 1004. http://dx.doi.org/10.3390/pr8081004.

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Ceramic matrix composites reinforced with carbon nanotubes are becoming increasingly popular in industry due to their astonishing mechanical properties and taking into account the fact that advanced production technologies make carbon nanotubes increasingly affordable. In the present paper, the most convenient contemporary methods used for the compaction of molding masses composed of either technical ceramics or ceramic matrix composites reinforced with carbon nanotubes are surveyed. This stage that precedes debinding and sintering plays the key role in getting pore-free equal-density ceramics at the scale of mass production. The methods include: compaction in sealed and collector molds, cold isostatic and quasi-isostatic compaction; dynamic compaction methods, such as magnetic pulse, vibration, and ultrasonic compaction; extrusion, stamping, and injection; casting from aqueous and non-aqueous slips; tape and gel casting. Capabilities of mold-free approaches to produce precisely shaped ceramic bodies are also critically analyzed, including green ceramic machining and additive manufacturing technologies.
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Dissertations / Theses on the topic "Magnetic tape industry"

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Surber, Greg A. "Record Progressions: Technology and its Role in the Development and Dissemination of Jazz." Ohio University Honors Tutorial College / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1258571630.

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Books on the topic "Magnetic tape industry"

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Robert, Moran. Magnetic/opto-magnetic storage: Media & materials. Business Communications Co., 1987.

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Puffert, Douglas J. Unrecorded media. Office of Industries, U.S. International Trade Commission, 1995.

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Seminar, ITA (Organization) Membership Meeting &. Update. "The current status and future trends in magnetic and optical media recording": Proceedings, 1993 annual ITA Membership Meeting & Update Seminar, New York, New York, November 16, 1993. ITA, 1993.

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Seminar, ITA (Organization). Agenda for change: The brave new world of digital : proceedings. ITA, 1993.

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Seminar, ITA (Organization). The impact of technology and marketing on the global market of the 90's: Proceedings. ITA, 1990.

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ITA (Organization). Membership Meeting & Update Seminar. "The current status and future trends in magnetic and optical recording media": Proceedings, 1994 annual ITA Membership Meeting & Update Seminar, New York, New York, November 22, 1994. ITA, 1994.

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Saitō, Shigeru. Kamera tokei eizō gyōkai. Kyōikusha, 1985.

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Koh, William. Making sweet music: Atlas Sound & Vision. Cengage Learning, 2014.

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United States. Congress. House. Committee on the Judiciary. Subcommittee on Courts, Civil Liberties, and the Administration of Justice., ed. Copyright issues presented by digital audio tape: Joint hearing before the Subcommittee on Patents, Copyrights, and Trademarks of the Senate Committee on the Judiciary and the Subcommittee on Courts, Civil Liberties, and the Administration of Justice of the House Committee on the Judiciary, One hundredth Congress, first session on digital audio taping, April 2, 1987. U.S. G.P.O., 1987.

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United, States Congress Senate Committee on the Judiciary Subcommittee on Patents Copyrights and Trademarks. Copyright issues presented by digital audio tape: Joint hearing before the Subcommittee on Patents, Copyrights, and Trademarks of the Senate Committee on the Judiciary and the Subcommittee on Courts, Civil Liberties, and the Administration of Justice of the House Committee on the Judiciary, One hundredth Congress, first session on digital audio taping, April 2, 1987. U.S. G.P.O., 1987.

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Book chapters on the topic "Magnetic tape industry"

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Nikles, David E., Matthew M. Ellison, Jin Young Huh, James P. Parakka, and Adam Power. "Pollution Prevention in the Magnetic Tape Industry: Solventless Coating Formulations for Magnetic Tape Manufacture." In ACS Symposium Series. American Chemical Society, 2000. http://dx.doi.org/10.1021/bk-2001-0766.ch003.

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Knudsen, James K. "Scanning Probe Methods in the Magnetic Tape Industry." In Applied Scanning Probe Methods III. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-26910-x_11.

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Goldsmith, Thomas. "Recording “Foggy Mountain Breakdown”." In Earl Scruggs and Foggy Mountain Breakdown. University of Illinois Press, 2019. http://dx.doi.org/10.5622/illinois/9780252042966.003.0008.

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Flatt and Scruggs went into Herzog Studios in Cincinnati, Ohio, on December 11, 1949, to record his recently composed tune “Foggy Mountain Breakdown,” the first instrumental recording for Flatt and Scruggs. E. T. (Bud) Herzog had started the studio a few years earlier, attracting name artists such as Patti Page and Hank Williams. Producer Murray Nash used the new medium of magnetic tape recording at the sessions, almost certainly using several microphones to achieve a widely praised sound. Nash, from the Midwest, had quickly gotten up to speed on the record industry, which was growing quickly following the end of the union ban on live recording and with the postwar growth of the economy.
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Alilunas, Peter. "Saving the Family." In Smutty Little Movies. University of California Press, 2016. http://dx.doi.org/10.1525/california/9780520291706.003.0006.

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The final chapter examines traditional forms of regulation, focusing on the community protests, anti-pornography feminist movements, national efforts by conservative groups, and other attempts to contain the efforts by the adult video industry to find widespread public acceptance and economic success. I argue that a panic, traceable to the move of sexually explicit films from public to private spaces, resulted in a major shift in the cultural understanding of sexuality, pleasure, and pornography. Part of this panic is visible in the Meese Commission’s investigation in 1986, which aligns with the period in which the adult film industry completed the transition from celluloid to magnetic tape-based production and distribution. I conclude the book with an analysis of the mainstream video rental’s decision to stop carrying adult video in the wake of the Meese Commission and gesture toward the further regulatory actions of the 1990s.
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Jayaram, Mahesh, Sarah Farrand, Dennis Velakoulis, and Christos Pantelis. "Physical treatments." In Psychiatric Ethics, edited by Sidney Bloch and Stephen A. Green. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780198839262.003.0018.

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Physical treatments in psychiatry form the mainstay of psychiatric treatments alongside other psychological therapies. Ethical decision-making in the best interest of the patient should always take precedence over any conflict of interest; however, this is a complex area given multiple competing interests and which requires careful evaluation and reflection. We explore the complex interplay between psychiatrists and the pharmaceutical industry with a particular focus on research, drug development and discovery, publication, and dissemination. We also focus on ethics relating to treatments in special groups such as those experiencing pregnancy and postnatal care, early intervention, pharmacogenomics, or treatment-resistant schizophrenia. We then discuss issues relating to consent that correlate with case law and precedents set, which have impact on daily clinical life. Ethical issues relating to neurostimulation including electroconvulsive therapy or newer treatments such as transcranial magnetic stimulation and deep brain stimulation are also explored, outlining historical issues and contemporary guidelines leading to improvements in care.
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Conference papers on the topic "Magnetic tape industry"

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Tsuruta, Kazuhiro, Angeliki Pantazi, Giovanni Cherubini, and Jens Jelitto. "Skew Estimation and Compensation in Tape Drives With Flangeless Rollers." In ASME 2013 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/isps2013-2924.

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Magnetic tape remains the medium of choice for long-term data storage at the lowest possible cost. Moreover, tape-cartridge capacities are expected to maintain a compound annual growth rate of about 40%, resulting in a 128 TByte tape-cartridge capacity by 2022, as forecast by the Information Storage Industry Consortium (INSIC) roadmap [1]. To achieve these capacities in future tape products, the data track width has to be aggressively reduced through ultra-precise tape head positioning.
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Uptigrove, Stan O., Paul S. Eakins, and John E. Sears. "New Applications and Advancements in Magnetic Bearing Systems for Pumps and Compressors." In 1996 1st International Pipeline Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/ipc1996-1897.

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Magnetic bearings have been used in a variety of pipeline applications, but have not yet achieved industry wide acceptance. They continue to be installed in more innovative and challenging applications which take advantage of the efficiency gains and other information they make available to end users. Despite the promise offered by the technology, issues concerning cost and reliability remain the primary concern among end users. This sets the stage for a discussion of recent operating experience, and advancements currently underway to address the cost and reliability issues. Such advancements include digital control, simplified control hardware, feed forward algorithms and on-line diagnostic capability.
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Zhu, Junjie, Tzuen-Rong Jeremy Tzeng, and Xiangchun Schwann Xuan. "Dielectrophoretic Separation of Microparticles in Curved Microchannels." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11885.

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Particle (both biological and synthetic) separation is important for a wide range of applications in industry, biology, and medicine. In microfluidic devices particles have been separated based on either extrinsic labels (e.g., fluorescence- and magnetic-activated sorting) or intrinsic properties (e.g., size, charge, density, etc.). The latter may take place in a batchwise or continuous-flow process. The batch-process separation typically includes filtration, chromatography, and electrophoresis. In the continuous-flow separation, an external force field (e.g., acoustic, electrical, magnetic, and optical, etc.) acts on particles at an angle to the flow direction and deflects them to different flow paths [1]. Here we introduce a continuous particle separation technique in electrokinetic flow through curved microchannels. This separation results from the cross-stream dielectrophoretic motion induced by channel curvatures [2]. It eliminates the use of in-channel micro-electrodes or micro-obstacles that are required in present dielectrophoresis-based particle separation techniques [3].
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Fletcher, Richard, and Louis Fenyvesi. "Validity of the LAPA Method for Assessment of Defects Reported by In-Line Inspection Tools." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0430.

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Over recent years, RSTRENG has gained acceptance as a reliable method of assessing the effect of pipeline corrosion defects, while reducing the conservatism inherent in some of the alternative assessment models. The Length Adaptive Pressure Assessment (LAPA) algorithm has been developed to apply an adaptation of the RSTRENG methodology directly to the results of a magnetic in-line inspection. Adoption of the LAPA technique offers substantial accuracy and efficiency benefits over the more conventional processes, but the industry requires confirmation of the method’s validity before it can take advantage of these. The paper will describe the LAPA validation work performed by PII, and independent validation undertaken by TransCanada Pipelines and other pipeline operators. The independent validation took the form of a comparison of LAPA-based burst pressure calculations with RSTRENG calculations based on direct infield measurements of the defect profile. TransCanada also performed a series of burst tests to quantify the accuracy of the LAPA calculations.
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Bidkar, Rahul A., Arvind Raman, and Anil K. Bajaj. "Aeroelastic Flutter at the Free Edges of Uni-Axially Tensioned Webs and Thin Films." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81318.

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Aero elastic flutter may play an important role in the breakage of thin membrane-like structures (a.k.a. webs) found in paper-handling, textile, sheet-metal and magnetic tapes industry. In this article, we examine the aero elastic stability of a web modeled as a uni-axially tensioned (along the machine direction) low aspect ratio Kirchhoff plate, which is subject to a fluid flow in the cross machine direction. Panel methods based on the distribution of singularity solutions (sources and doublets) on the surface of the web are used to numerically solve the problem of 3D unsteady potential flow surrounding the web. The equation of motion of the plate coupled to a fluid flow is discretized by using Galerkin’s method. The discretization is performed in the configuration space formulation of the gyroscopic eigenvalue problem. The linear stability of this reduced order system is investigated. The onset of flutter instability as a function of base fluid flow in the cross machine direction is studied. The effects of fluid coupling on the frequencies and modes of oscillations of the web are also studied.
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Anders, Jens, Peter Leslie, and Lars-Erik Stacke. "Rotor Drop Simulations and Validation With Focus on Internal Contact Mechanisms of Hybrid Ball Bearings." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95816.

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Active Magnetic Bearings technology is becoming more and more a standard in Oil and Gas turbo machinery. Touchdown bearings are an important element of all machines levitated by magnetic bearings. Frequently implemented as hybrid ball bearings, they constitute the only mechanical link between the rotor spinning at high peripheral speed and the stator. Since both sides carry fragile parts, any uncontrolled contact must be avoided. Extensive testing has been done in industry. When unplanned down-time would have a high system impact or when repair options are limited (upstream equipment, subsea operation), elaborate testing campaigns are common. A complement, if not an alternative, are computer based transient rotor drop simulations. They allow reducing uncertainties and help qualifying designs. In most cases, simulations use rotor dynamics models combined with contact models allowing an estimation of shaft behavior during a drop. We present a new approach for transient rotor drop simulations, where detailed calculation of the interior ball bearing mechanics is at the center of the model. This is possible by using a multiple-bodies simulation code, which was initially developed for pure ball bearing calculations and implements contact models including lubrication, wear, and geometry imperfections. Here, the same code is used to model entire shaft systems, associated with preloaded touchdown bearings. This technique allows not only to understand and to analyze failure patterns that determine bearing lifetime (contact stress, heat, and deformation), but also to take into account interactions of the bearing itself with the rest of the system. After a feasibility study for validating the capability of simulating rotor drops, three models were realized for three different types of machines of increasing complexity that were all validated by actual drop tests. The last model is a supercritical horizontal shaft system (200kg) representing an actual Oil and Gas application in reduced scale. Simulated shaft behavior was successfully compared to drop test recordings. The output was analyzed for internal bearing mechanics (contact pressures and contact angle, sliding or rolling friction) and could be correlated with evidence found on the bearings from the drop tests.
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Yuksek, Errol L., and Parsa Mirmobin. "Electricity Generation From Large Marine Vessel Engine Jacket Water Heat." In ASME 2015 9th International Conference on Energy Sustainability collocated with the ASME 2015 Power Conference, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/es2015-49226.

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As world trade grows, fuel prices increase, and International Maritime Organization (IMO) emissions requirements tighten, there is more demand for the marine industry to employ innovative means of reducing the fuel consumption and emissions of shipping vessels. The main engines of large shipping vessels produce a large quantity of low temperature heat, but this valuable heat energy is transferred to cooling systems and rejected to the oceans as waste. At the same time, the electrical needs of shipping vessels are sustained by burning diesel fuel to run generators. Calnetix Technologies, in partnership with Mitsubishi Heavy Industries, has developed the Hydrocurrent™ 125EJW Organic Rankine Cycle (ORC), a modularized system capable of absorbing the waste heat of main engine jacket water and converting it into grid-quality electric power. By combining this renewable source with the existing non-renewable source (engine gensets) a unique renewable-non-renewable hybrid power system is realized with minimal changes to overall ship power train. This novel hybrid system can be applied to all new and existing ships and allow for further integration into ship systems with available waste heat. Shipping vessels such as tankers, bulk carriers, and container vessels are typically equipped with a category 3 marine diesel engine for main propulsion. A 30 MW engine, a most common engine size, utilizes 200–300 m3/hr of jacket water regulated to a heated temperature of 80–95 C. When integrated into the jacket water and sea water loops, the ORC can produce up to 125 kW of gross grid-quality electric power. This adds an immense benefit to the ship. To produce the same amount of power, a diesel generator consumes as much as 250 metric tons of diesel fuel per year, generates emissions, and requires significant maintenance. Calnetix Technologies has leveraged its core technologies to develop the ORC into a reliable, high efficiency, compact and modular design. The turbo-generator or Integrated Power Module (IPM) is a hermetically sealed, high speed radial turbine coupled to a permanent magnet generator supported by magnetic bearings. Power from the IPM is converted by a high efficiency power converter supplying the ship with reliable power. The integrated design of the ORC along with the sophistication of its controls systems ensures essential ship functions are undisturbed under all conditions. The ORC is designed to comply with Nippon Kaiji Kyokai and Lloyd’s Register marine regulations and sea trials are anticipated to take place in 2015.
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Jiang, Zhe, Tao Sun, Gaosheng Luo, Biao Wang, and Wei Guo. "A Preliminary Study on the Development of a Novel Marine Growth Cleaning Robot for Jacket Platforms." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95176.

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Abstract As the underwater structures of offshore Jacket platforms are always immersed in seawater, the marine growth, which include various forms of algae, slime, and seaweed, barnacles, mussels and other species of adhesive shellfish, will attach to steel-pipe surface and will accelerate structural corrosion and impair structural safety. Currently, routine cleaning and inspection task is undertaken by divers using cleaning jets in normally every 3∼5 years. The cleaning duration for one single platform will take up more than two months, even up to half a year, due to the constraints of weather windows and limited working hours of divers. It is a risky job for divers not only because of huge pressures that water-jets produce, but also the harsh working conditions of poor visibility, unexpected vortex and waves around platform, and etc. Underwater robots are being developed for various applications in offshore oil industry ranging from inspection to maintenance and cleaning of submerged surfaces and constructions. This paper introduces a novel underwater robot specializing in cleaning marine growth for offshore Jackets. Since the diameter of steel-pipes varies from about 600mm to 2000mm, a self-adapted mechanism is designed. The self-adaption mechanism makes the robot travel on pipes in different directions with high mobility and clean continuous region of underwater pipes’ surface at the same time. Two key issues have been studied in this paper. The magnetic adhesion method is adopted in the robot. A sensitivity study on the distance between steel-pipes and thickness of steel pipes with the adhesion force are conducted both using finite element method and experiments. Besides, the flushing capability for various nozzles has been simulated using computational fluid dynamics method. The proposed underwater robot is needed in the inspection and maintenance of offshore Jacket platforms. Compared with traditional maintenance by divers, it is more efficient, economic and safe.
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