Gotowe bibliografie tematyczne / Aerospace modern industries

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Gotowa bibliografia na temat „Aerospace modern industries”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Aerospace modern industries"

Spalding, I. "Modern Laser Applications". Proceedings of the Institution of Mechanical Engineers, Part B: Management and engineering manufacture 201, nr 3 (sierpień 1987): 165–74. http://dx.doi.org/10.1243/pime_proc_1987_201_063_02.

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Manufacturing companies in both the mechanical and electrical sectors of industry are now beginning to adopt lasers for an increasing range of materials processing applications, including cutting, drilling, welding and surface treatments of both metals and non-metals. In some of these applications the process or product is completely novel, but for many others the compatibility of the laser with computer numerically controlled (CNC) and robotic techniques, its flexibility in operation, or other practical factors, are helping it to compete with older established fabrication technologies. Some illustrative applications drawn from nuclear, aerospace, and mass production industries are discussed in detail. The paper also touches briefly on the potential importance of laser technology for other industrial applications such as measurement, information technology and chemistry, as well as a few ‘high profile’ scientific applications.

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Sharma, Sushant, Vipin Kumar, Abhishek K. Pathak, Tomohiro Yokozeki, Shailesh Kumar Yadav, Vidya Nand Singh, S. R. Dhakate i Bhanu Pratap Singh. "Design of MWCNT bucky paper reinforced PANI–DBSA–DVB composites with superior electrical and mechanical properties". Journal of Materials Chemistry C 6, nr 45 (2018): 12396–406. http://dx.doi.org/10.1039/c8tc04023k.

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Yao, Qingyu. "Investigations and Applications in Advanced Materials Processing". Coatings 13, nr 3 (17.03.2023): 631. http://dx.doi.org/10.3390/coatings13030631.

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Bouzekova-Penkova, Anna, i Adelina Miteva. "Some Aerospace Applications of 7075 (B95) Aluminium Alloy". Aerospace Research in Bulgaria 34 (2022): 165–79. http://dx.doi.org/10.3897/arb.v34.e15.

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Nowadays, aluminium alloys are of growing interest to scientists and are widely used in aerospace and allied industries due to their inherent lightness, high strength to weight ratio, excellent thermal and electrical conductance, good reflectivity and low working cost. Among the conventional structural materials used in aerospace applications aluminium alloys are frontrunners. This is due to the ability of modern aluminium alloys to achieve unique combination of properties, through alloying and heat treatment, tailored to particular applications. Aluminum alloy 7075 (B95) is a high-strength alloy that works in extreme conditions and is used in modern construction of aircraft, spacecraft and satellites. In this mini-review, we will briefly focus on some of the existing and growing applications of some 7xxx aluminum alloys, in particular 7075 (B95), in the aerospace industry. Possible options for continuing work in this area are considered, and some Bulgarian developments are presented.

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Rowe, M. D., V. R. Ishwar i D. L. Klarstrom. "Properties, Weldability, and Applications of Modern Wrought Heat-Resistant Alloys for Aerospace and Power Generation Industries". Journal of Engineering for Gas Turbines and Power 128, nr 2 (1.03.2004): 354–61. http://dx.doi.org/10.1115/1.2056527.

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Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability, and fabricability. Critical properties of modern heat-resistant alloys for gas turbine applications include high-temperature strength, thermal stability, oxidation resistance, and fatigue resistance. In this paper, the properties of 12 solid-solution-strengthened and six age-hardenable heat-resistant alloys are compared. Weldability is an important attribute and can be a major limiting factor in the use of certain alloys. Weldability test methods are discussed, and the resistance of alloys to solidification cracking and strain-age cracking is compared. The use of weldability testing in the development of modern heat-resistant alloys is discussed with several examples cited. Finally, alloy selection for gas turbine components is outlined, taking into account both alloy properties and fabricability.

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Borisovich, V. T., V. N. Ivanov i Z. M. Nazarova. "THE STATUS OF THE MINERAL RAW MATERIALS BASE OF PRECIOUS METALS OF RUSSIA AND THEIR ROLE IN THE MODERN ECONOMY". Proceedings of higher educational establishments. Geology and Exploration, nr 2 (30.04.2018): 59–64. http://dx.doi.org/10.32454/0016-7762-2018-2-59-64.

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The current state of the mineral resource base of gold, silver, platinum and palladium for different geological and industrial types of deposits has been shown. For each of the given metals reserves, probable reserves and allocated fund of deposits in Russia have been given. For all bank precious metals volumes of the market offers have been given. Special attention has been paid to the use of the metals both in the world and in Russia. In the practice of market relations, the demand for precious metals can be divided into two types: fabrication (industrial) and hoarding (investment). Precious metals are used in jewelry, electronic, glass, nuclear, pharmaceutical, chemical, petrochemical and other industries. They find their application in medicine and biomedicine, automotive, microelectronics, aerospace instrument making, the manufacturing of lasers and nuclear tests. It has been noted that in our country a great disadvantage is the weak industrial use of precious metals.

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Popov, Vladimir V., Maria Luisa Grilli, Andrey Koptyug, Lucyna Jaworska, Alexander Katz-Demyanetz, Damjan Klobčar, Sebastian Balos, Bogdan O. Postolnyi i Saurav Goel. "Powder Bed Fusion Additive Manufacturing Using Critical Raw Materials: A Review". Materials 14, nr 4 (14.02.2021): 909. http://dx.doi.org/10.3390/ma14040909.

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The term “critical raw materials” (CRMs) refers to various metals and nonmetals that are crucial to Europe’s economic progress. Modern technologies enabling effective use and recyclability of CRMs are in critical demand for the EU industries. The use of CRMs, especially in the fields of biomedicine, aerospace, electric vehicles, and energy applications, is almost irreplaceable. Additive manufacturing (also referred to as 3D printing) is one of the key enabling technologies in the field of manufacturing which underpins the Fourth Industrial Revolution. 3D printing not only suppresses waste but also provides an efficient buy-to-fly ratio and possesses the potential to entirely change supply and distribution chains, significantly reducing costs and revolutionizing all logistics. This review provides comprehensive new insights into CRM-containing materials processed by modern additive manufacturing techniques and outlines the potential for increasing the efficiency of CRMs utilization and reducing the dependence on CRMs through wider industrial incorporation of AM and specifics of powder bed AM methods making them prime candidates for such developments.

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Chen, Yan Yan. "The Application of Carbon Fiber Materials in Sports Equipment". Applied Mechanics and Materials 687-691 (listopad 2014): 4240–43. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.4240.

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Carbon fiber materials are not only widely used in aerospace, automotive and other industries, but also develop one of the best sports equipment selection. Elaborated by typical examples, this paper introduces the carbon fiber material used in the game of high-tech equipment and indicates that this material greatly promoted the improvement of sports performance. Carbon fiber materials have become one of the new materials which are essential for the development of modern sports equipment.

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Ovodenko, Anatoliy, Yan Ivakin, Elena Frolova i Maria Smirnova. "Qualimetric model for assessing the impact of the level of development of corporate information systems on the quality of aerospace instrumentation". E3S Web of Conferences 220 (2020): 01017. http://dx.doi.org/10.1051/e3sconf/202022001017.

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In the context of the digital transformation of the economy, the effective development of corporate information systems of research and production holdings of aerospace instrumentation is becoming one of the decisive factors in ensuring the high quality of domestic avionics. This article is devoted to the analysis of the influence factor of digitalization and informatization processes in scienceintensive industries of modern aerospace instrumentation, as well as the definition of a qualimetric model for assessing its impact on the quality of domestic avionics products in the current economic and technological conditions. The influence of the level of development of corporate information systems of aerospace instrumentation enterprises on the quality of domestic avionics products is assessed in the article on the basis of the corresponding hierarchy of quality indicators. The proposed model of the influence of the level of development of corporate information systems on the quality of aerospace instrumentation products assumes the choice of the form of the integral criterion depending on the external requirements for the efficiency of the assessment, the sensitivity of the system of quality indicators.

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Singh, Priyanka, Ravinder Kumar Tomar, Krishna Mohan Agarwal, Harsh Kaushik i S. K. Singh. "Synthesis of Carbon Fiber Composites and Different Methods to Improve its Mechanical Properties: A Comprehensive Review". IOP Conference Series: Earth and Environmental Science 889, nr 1 (1.11.2021): 012013. http://dx.doi.org/10.1088/1755-1315/889/1/012013.

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Abstract Efficient and innovative products can be made using high strength and lighter weight (almost half the steel weight) in modern-day automobile industries. One such material is Carbon Fiber, and it is used as its composites made with the help of epoxy resins. Carbon Fibers applications are increasing in use, in both the aerospace and automobile industries. The corrosion resistance and damping properties of the material can be put to better use in constructions that are heavily strained. The paper aims to review the manufacturing of Carbon fiber composites and their mechanical properties (tensile & flexural strength), which ultimately deals with their applications in the automobile industry. Also, it deals with a review of a few methods or substances used to improve the mechanical properties of carbon fiber composites.

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Rozprawy doktorskie na temat "Aerospace modern industries"

López, Gómez Carlos Enrique. "National value capture in modern industrial systems : insights for policy development". Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607916.

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Maturkanič, Michal. "Analýza business modelu spoločnosti Aircraft Industries, a.s. a návrhy na jeho zlepšenie". Master's thesis, Vysoká škola ekonomická v Praze, 2017. http://www.nusl.cz/ntk/nusl-359061.

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The graduation theses applies itself to business model analysis of the company Aircraft Industries, a.s. which run a business in production and sales of small civil aircrafts L-410. The company is struggling with period full of uncertainty which caused the fall of sales, fabrication restriction as well as loss in trading incomes. Unfortunately, according to some analysis performed in the diploma work, the current problems have not been caused just by contemporary events, though by long-term inappropriate set of processes in the firm, too. After all, the work shows possible development in the near future, its impact on the company, as well as suggestions which should be received and accepted by management to avoid any further negative impacts on the company.

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Martof, Ashley Nicole. "Analysis of Business Models for the Use of Additive Manufacturing for Maintenance and Sustainment". Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1494940467559894.

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Krishna, Yelisetty Sree Rama. "Proposta de modelo de gestão da qualidade nos fornecedores do setor aeroespacial". [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264326.

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Orientador: Oswaldo Luiz Agostinho
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
Made available in DSpace on 2018-07-28T19:39:16Z (GMT). No. of bitstreams: 1 Krishna_YelisettySreeRama_M.pdf: 13187967 bytes, checksum: af484ebe0655853678b7f047b0e0f3b2 (MD5) Previous issue date: 2001
Resumo: Este trabalho apresenta um modelo conceitual de gestão e metodologia sistematizada para a implantação da qualidade nos requisitos de certificação de fornecedores do Setor Aeroespacial, levando-se em conta as normas ISO 9000, ISO 14000 e critérios de PNQ (Prêmio Nacional de Qualidade). Apresenta também resultados do estudo Benchmarking e análises dos critérios de qualificação dos fornecedores, das empresas "Referenciais de Excelência" como: EMBRAER, MECTRON, MARINHA e HELIBRAS, no que se refere à qualidade de fornecedores e faz uma comparação com sistema de qualidade dos fornecedores do CTA/IAE. O suporte tecnológico foi fornecido principalmente pelo Instituto de Aeronáutica e Espaço - IAE, um dos componentes do Centro Tecnológico Aeroespacial - CTA
Abstract: This work presents a conceptnal model of administration and systematic methodology for the implementation of the quality requisites and certification of the suppliers in Aerospace Sector, considering ISO 9000 roles and criterion of PNQ (Prêmio Nacional de Quualidade). It also presents results from the Benchmarking study as well as companies criterion analysis "Best in case", such as: EMBRAER, MECTRON, BRAZILIAN NA VY and HELIBRÁS, referring to suppliers quality and CT A/IAE quality system comparison
Mestrado
Engenharia de Fabricação
Mestre em Engenharia Mecânica

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Baddour, Nizar. "Etude instationnaire thermomecanique d'un lopin lors d'une operation de forgeage". Toulouse 3, 1988. http://www.theses.fr/1988TOU30176.

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Książki na temat "Aerospace modern industries"

N, Atluri Satya, red. Computational nonlinear mechanics in aerospace engineering. Washington, DC: American Institute of Aeronautics and Astronautics, 1992.

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Graziola, Giancarlo, i Elena Cefis. L'industria spaziale italiana nel contesto europeo: I rendimenti degli investimenti in alta tecnologica. Bologna: Il mulino, 2011.

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Ramey, Valerie A. Displaced capital. Cambridge, MA: National Bureau of Economic Research, 1998.

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Angelo, Miele, i Salvetti A, red. Applied mathematics in aerospace science and engineering. New York: Plenum Press, 1994.

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N, Atluri S., red. Computational nonlinear mechanics in aerospaceengineering. Washington, DC: American Institute of Aeronautics and Astronautics, 1992.

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Gilinskiĭ, M. M. Advanced gas dynamics for aerospace and defense applications: Moscow State University Institute of Mechanics R&D. Alexandria, Va: Global Consultants, 1992.

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D, Pintér János, i SpringerLink (Online service), red. Modeling and Optimization in Space Engineering. New York, NY: Springer New York, 2013.

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National Air and Space Museum, red. Artifacts of flight. Washington, D.C: Smithsonian National Air and Space Museum in association with H.N. Abrams, New York, 2003.

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Russo, Carolyn. Artifacts of flight. Washington, DC: Smithsonian National Air and Space Museum in association with H.N. Abrams, Inc., Publishers, 2004.

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Edgerton, David. England and the Aeroplane: An Essay on a Militant and Technological Nation (Science, Technology and Medicine in Modern History). Palgrave Macmillan, 1991.

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Części książek na temat "Aerospace modern industries"

Copani, Giacomo, Maryam Mirpourian, Nikoletta Trivyza, Athanasios Rentizelas, Winifred Ijomah, Sarah Oswald i Stefan Siegl. "New Business Models and Logistical Considerations for Composites Re-use". W Systemic Circular Economy Solutions for Fiber Reinforced Composites, 385–415. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22352-5_19.

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AbstractThe growing use of composites in various industries such as aerospace, automotive and wind turbine has increased environmental concerns regarding their waste disposal methods. Deploying circular economy practices to reuse composites could play a crucial role in the future. In this regard, this chapter addresses the development and implementation of new business models for composites re-use, as fundamental enabler for the industrial exploitation and diffusion of technological and methodological innovations developed in the FiberEUse project. Seven products were chosen as representatives for composites reuse application in four industrial sectors: sanitary, sports equipment, furniture and automotive. Re-use business models are presented describing their value proposition, with particular reference to the provision of advanced product-service bundles, the revenue models (including schemes such as leasing), as well as new supply chain configurations entailing new partnership between producers and recyclers to access post-use composites to re-use. Given the importance of reverse supply networks, the potential reverse logistics pathways for mechanical recycling of Glass Fiber Reinforced Plastic (GFRP), thermal recycling of Carbon Fiber Reinforced Plastic (CFRP) and remanufacturing of CF composites waste in Europe for 2020 and 2050 have been investigated. We concluded that the optimal reverse logistics network needs to be decentralized in more than one country in Europe. Therefore, it is suggested that policy makers address regulation to allow the transportation of waste between European countries to facilitate the development of recycling networks for composites reuse.

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Fazlalipour, Neda, Robab Naseri Ghalghachi i Saeed Eyvazinejad Firouzsalari. "Buckling Behaviour of Locally Dented GFRP Cylindrical Shells Under External Pressure—A Numerical Study". W Lecture Notes in Civil Engineering, 263–71. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1748-8_22.

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AbstractStructural applications of composite materials are used in various structures of the oil and gas industry, water supply and sewage systems and a wide range of industries, such as marine, aerospace, and military industries. This paper aims to numerically investigate the influence of local dent caused by an indenter on the buckling behaviour of glass fabric-reinforced polymer cylindrical shells when subjected to external pressure. For this purpose, 24 finite element numerical models with five layers and a stacking sequence [30/-30/30/-30/30] were simulated in ABAQUS. The effect of dent depth (2, 4, 6 and 8 mm) and orientation (0 and 90 degrees) that was created at the mid-height, the 1/3rd and the 2/3rd of the shell height on the buckling behaviour of the composite cylindrical shells were evaluated. The results underscored that whilst the location of the local dent and the depth affected the shells’ buckling capacity, the dent's orientation had minimal effect on the buckling capacity of the cylindrical shells.

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Kuppusamy, Raghu Raja Pandiyan, Satyajit Rout i Kaushik Kumar. "Advanced manufacturing techniques for composite structures used in aerospace industries". W Modern Manufacturing Processes, 3–12. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-819496-6.00001-4.

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Shmelova, Tetiana, Yuliya Sikirda, Nina Rizun, Vitaliy Lazorenko i Volodymyr Kharchenko. "Machine Learning and Text Analysis in an Artificial Intelligent System for the Training of Air Traffic Controllers". W Automated Systems in the Aviation and Aerospace Industries, 1–50. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7709-6.ch001.

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This chapter presents the application of new information technology in education for the training of air traffic controllers (ATCs). Machine learning, multi-criteria decision analysis, and text analysis as the methods of artificial intelligence for ATCs training have been described. The authors have made an analysis of the International Civil Aviation Organization documents for modern principles of ATCs education. The prototype of the neural network for evaluating the timeliness and correctness of the decision making by ATCs has been developed. The new theoretical and practical tasks for simulation and pre-simulation training have been obtained using expert judgment method. The methodology for sentiment analyzing the airline customers' opinions has been proposed. In addition, the examples of artificial intelligence systems and expert systems by the authors, students and colleagues from National Aviation University, Ukraine and Gdansk University of Technology, Poland have been proposed.

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Nasrazadani, Seifollah, i Shokrollah Hassani. "Modern analytical techniques in failure analysis of aerospace, chemical, and oil and gas industries". W Handbook of Materials Failure Analysis with Case Studies from the Oil and Gas Industry, 39–54. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-08-100117-2.00010-8.

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Vinod Kumaar J. R., Mythili T. i Suganya Priyadharshini G. "Recent Trends in Non-Traditional Machining of Alloys and Composites". W Advanced Manufacturing Techniques for Engineering and Engineered Materials, 61–81. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-9574-9.ch004.

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In the modern manufacturing era, machining alloys and composite materials enable proper machining methods to get the required shape and dimensions. The usage of alloys and composite materials is increasing in several industries including aerospace, automobile, MEMS, electronics, medical, biomedical, pharmaceutical industries, and so on because of less weight and more strength. Though various methods are available for machining of composites materials and alloys, only electrochemical micro-machining (ECMM) and wire electrical discharge machining (WEDM) are apt for micron-level machining of these materials by complex shapes with good surface quality. This chapter attempts to provide insight into the recent developments in machining of these alloys and composite materials by ECMM and WEDM.

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Das, Raja, i Mohan Kumar Pradhan. "Artificial Neural Network Training Algorithms in Modeling of Radial Overcut in EDM". W Soft Computing Techniques and Applications in Mechanical Engineering, 140–50. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3035-0.ch006.

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This chapter describes with the comparison of the most used back propagations training algorithms neural networks, mainly Levenberg-Marquardt, conjugate gradient and Resilient back propagation are discussed. In the present study, using radial overcut prediction as illustrations, comparisons are made based on the effectiveness and efficiency of three training algorithms on the networks. Electrical Discharge Machining (EDM), the most traditional non-traditional manufacturing procedures, is growing attraction, due to its not requiring cutting tools and permits machining of hard, brittle, thin and complex geometry. Hence it is very popular in the field of modern manufacturing industries such as aerospace, surgical components, nuclear industries. But, these industries surface finish has the almost importance. Based on the study and test results, although the Levenberg-Marquardt has been found to be faster and having improved performance than other algorithms in training, the Resilient back propagation algorithm has the best accuracy in testing period.

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Das, Raja, i Mohan Kumar Pradhan. "Artificial Neural Network Training Algorithms in Modeling of Radial Overcut in EDM". W Research Anthology on Artificial Neural Network Applications, 329–39. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-2408-7.ch015.

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Ostroumov, Ivan, i Nataliia Kuzmenko. "Applications of Artificial Intelligence in Flight Management Systems". W Handbook of Research on Artificial Intelligence Applications in the Aviation and Aerospace Industries, 180–92. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1415-3.ch007.

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Flight management system (FMS) is one of the key elements of the modern airplane. It is a computer-based system that helps a pilot with different routine operations. FMS includes numerous algorithms of Artificial Intelligence to support navigation, guidance, and control of aircraft. FMS hosts algorithms of airplane positioning by data from navigational aids and data fusion from multiple sensors. The internal memory of FMS includes global air navigation databases such as runways, airports data, air navigation charts, navigational aids, SIDs, STARs, approaches, and routes for automatic support of airplane operation.

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Boiko, Serhii Mykolaiovych, Yurii Shmelev, Viktoriia Chorna i Marina Nozhnova. "Research of the Reliability of the Electrical Supply System of Airports and Aerodromes Using Neural Networks". W Handbook of Research on Artificial Intelligence Applications in the Aviation and Aerospace Industries, 279–305. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1415-3.ch012.

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The system of supplying airports and airfields is subject to high requirements for the degree of reliability. This is due to the existence of a large number of factors that affect the work of airports and airfields. In this regard, the control systems for these complexes must, as soon as possible, adopt the most optimal criteria for the reliability and quality of the solution. This complicates the structure of the electricity supply complex quite a lot and necessitates the use of modern, reliable, and high-precision technologies for the management of these complexes. One of them is artificial intelligence, which allows you to make decisions in a non-standard situation, to give recommendations to the operator to perform actions based on analysis of diagnostic data.

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Streszczenia konferencji na temat "Aerospace modern industries"

Rowe, M. D., V. R. Ishwar i D. L. Klarstrom. "Properties, Weldability, and Applications of Modern, Wrought, Heat-Resistant Alloys for Aerospace and Power Generation Industries". W ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-54309.

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Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability, and fabricability. Critical properties of modern heat-resistant alloys for gas turbine applications include high temperature strength, thermal stability, oxidation resistance, and fatigue resistance. In this paper, the properties of twelve solid-solution-strengthened and six age-hardenable heat-resistant alloys are compared. Weldability is an important attribute, and can be a major limiting factor in the use of certain alloys. Weldability test methods are discussed and the resistance of alloys to solidification cracking and strain-age cracking is compared. The use of weldability testing in the development of modern heat-resistant alloys is discussed with several examples cited. Finally, alloy selection for gas turbine components is outlined, taking into account both alloy properties and fabricability.

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Oruganti, K., M. Mehdizadeh, S. John i I. Herszberg. "Damage Detection in Composites Using Vibration Signatures and Mode Shapes". W ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-404.

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Composite materials are supplanting conventional metals in aerospace, automotive, civil and marine industries in modern times. However, despite these advantageous properties, they are prone to delamination or matrix cracking. Thus, necessitating the early detection of the crack or flaw before it initiates into a serious defect. An offline approach was commonly used where in the parts examined away from service/operation. This not only consumed a lot of time but risked damage to the part during operation and handling. A detailed understanding of the various proven methods and techniques and their applicability in the analysis of vibration signatures obtained from damaged structures under dynamic conditions is essential to develop a reliable Structural Health Monitoring System (SHMS). This paper includes Vibration based damage detection testing on Carbon/Epoxy composite beams. Such composites are commonly used in the aerospace and marine industry. This material type is gaining acceptance not only in the aerospace industry but also in the automotive and construction industries. The paper reports the processing of the vibration signatures from healthy and damaged composite beams upon excitation and analysis of the mode shapes acquired. The study comprises of testing carbon/epoxy composite beams with various embedded delaminations with a mechanical actuator and a scanning laser vibrometer (SLV) as a sensor for recording the frequency response and analysing the acquired signatures based on Displacement and Curvature Mode Shapes.

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Martin, Willi, Peter Jänker, Hans-Friedrich Siegling, Heinz Voggenreiter, Ping Wang, Michael Trutzel, Heinz Ahrendt i Valentin Klöppel. "Advances in Adaptive System Applications at Daimler-Benz Research Labs". W ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0187.

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Abstract Within the past years the Daimler-Benz Research & Technology Department has initiated work to explore the benefits of adaptive materials and structures technologies for use in a broad range of modern transportation systems in the aerospace, automotive and railway industries. This paper presents recent research activities focusing on two aerospace guidance concepts where the application of adaptive systems will play a major role: the “Adaptive Wing” and the “Adaptive Rotor Systems”. The “Adaptive Wing” will incorporate “smart” technologies to control wing geometry to adapt to actual lift and load requirements. Various concepts for airfoil shape adaptivity are currently under investigation. The “Adaptive Rotor Systems” include an innovative type of individual blade control (IBC) with piezo-driven servo flaps built into the outer trailing edge of the rotor blades. The presented research activities cover the field of multifunctional sensor and actuator systems based on adaptive materials and include basic material research, e.g. new approaches to fast reacting, high strain actuator materials, as well as innovative concepts for deformable “adaptive” structures up to proof-of-concept demonstrators at laboratory level.

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Widmann, James M. "Stretch Forming Process Modeling: The Role of Modern Stretch Forming Machinery Design and Performance". W ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1882.

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Abstract Extrusion stretch forming is used extensively in the aerospace and architectural industries to add contour to extrusions and roll formed sections. Frame members, stringers, wing spars, curtain tracks and many other important aircraft parts are formed with this process. Forming is achieved by pulling an initially straight part in the tensile direction above the material’s yield point and then wrapping the section around a die to add contour. Local buckling and wrinkling that might appear in a pure bending operation can be avoided. There is current interest in improving the process for greater repeatability and less part rework to reduce cost while achieving tighter tolerances (e.g. [1,2]). The stretch forming die plays a significant role in the process. To this end researchers are interested in quicker die development techniques using non-linear beam theory and non-linear finite element modeling of the forming process. For a complete analytical picture of the process, a close look at the stretch forming machine’s performance must be included in the process model. Two major areas of machine performance are important; machine deflections and hydraulic control system performance. This paper provides a brief overview of the extrusion stretch forming process and then focuses on the structural and control system design of the modern stretch forming machine. Analytical models of the machine deflection as well as its hydraulic control system are developed. A short discussion concerning the difference between traditional “pressure forming” and modern CNC position forming is also included. Insight into the limitations of traditional PID control for the stretch forming machine can be seen from the analysis. It is evident that these machine models must be used to complete the process model to effectively create die designs for close tolerance and highly repetitive part production.

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Nguyen, Christy, Marshall Laminen i Durul Ulutan. "A Review of Assisted / Augmented Manufacturing Processes". W ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-3030.

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Abstract Manufacturing has a history almost as long as the humankind, but as materials get more and more complex due to material science technology, manufacturing them becomes increasingly difficult. Using processes in combination has been a common practice. Similarly, using a simple process to aid a more complex process has often been employed. However, more advanced technologies have been developed to manufacture difficult-to-manufacture materials, as well as advanced auxiliary techniques to aid the main manufacturing process. In most of these processes, the aim is to improve the manufacturability of the part. Initial considerations to improve manufacturability were focused on being able to produce the part in ways aligning with the design. For example, in hot forging, it was not possible to achieve the right product without the aid of the secondary process (heating). As the manufacturing field evolved, needs of the industry changed to improving part quality and lowering manufacturing costs. Modern methods of assisting main manufacturing processes focus on ensuring (1) an extended use of the tool quantified by lower tool wear and higher tool life, (2) improved machine capabilities quantified by lower maintenance times and higher automation, (3) improved final product quality quantified by dimensional accuracy and surface, subsurface, and bulk material quality, and (4) increased sustainability of the process quantified by lower resource use such as machine power and lubrication. In this study, an overview of the use of assistance in manufacturing processes is provided. The review is focused on more modern techniques such as laser, electrical, magnetic field, and ultrasonic assistance, more modern materials that are difficult-to-manufacture such as hardened steels and titanium and nickel-based alloys, and on machining processes that are more imminent for the critical industries such as automotive, aerospace, energy production, and biomedical industries.

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Habashi, Wagdi G., He´loi¨se Beaugendre i Franc¸ois Morency. "Development of a Second Generation In-Flight Icing Simulation Code (Keynote)". W ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45816.

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Two-dimensional and quasi-3D in-flight ice accretion simulation codes have been widely used by the aerospace industry for the last two decades as an aid to the certification process. Such codes predict 2-D sectional ice shapes, which are then manufactured from a light material and attached as disposable profiles on a test aircraft to investigate it for stability and control under icing encounters. Although efficient for calculating ice shapes on simple geometries, current codes encounter major difficulties or simply cannot simulate ice shapes on truly 3D geometries such as nacelles, high-lift wings, engines and systems that combine external and internal flows. Modern Computational Fluid Dynamics (CFD) technologies can overcome many of these difficulties and FENSAP-ICE is such a second generation CFD-based in-flight icing simulation system, bringing to the icing field simulation methods already by the aircraft and turbomachinery industries. It is built in a modular and interlinked fashion to successively solve each of flow, impingement, accretion, heat loads and performance degradation via field models based on the Euler/Navier-Stokes equations for the clean and degraded flow, and new partial differential equations for the other three icing processes. This paper presents the FENSAP-ICE system and shows examples of its use.

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Tebeta, R. T., A. M. Fattahi, D. M. Madyira i H. M. Ngwangwa. "Experimental investigation of the elastic properties of PE/CNT nanocomposite". W International Conference on Mechanical, Automotive and Mechatronics Engineering. Aksaray: ECER, 2023. http://dx.doi.org/10.53375/icmame.2023.176.

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Developing and designing engineering materials with desirable properties, such as high strength to weight ratio, formability, corrosion resistance and biocompatibility, among many other properties, is crucial, especially in modern engineering and material science industries. This is influenced by the demand for high-performing and more efficient materials in biomedical, aerospace, and automotive engineering, as well as in other engineering sectors where such materials are required. However, it is challenging to attain such materials, and this has raised the attention of numerous research studies in composite and nanocomposite materials. Composite materials are formed as the result of combining two or more distinct materials to yield advanced materials with properties that are entirely different from the original materials. This paper investigates the effects of reinforcing High-Density polyethylene (HDPE) with Multi-Walled Carbon Nanotubes (MWCNT) nanoparticles at weight fractions of 0, 0.5, 1, and 1.5 wt.%. In this paper, only the elastic properties of the HDPE were evaluated at these different weight fractions. The results show that a weight fraction of 1 wt.% of MWCNTs nanoparticles offered the best reinforcement for HDPE/MWCNT nanocomposites among the investigated weight fractions.

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Pannikottu, Abraham, Joseph A. Seiler i Jerry J. Leyden. "Non-Linear Finite Element Analysis Support Testing for Gaskets and Seals". W ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-1112.

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Abstract Computer-Aided Engineering (CAE) refers to the use of computers to perform design calculations for determining an optimum shape and size for a variety of engineering applications. This modern concept of engineering management has led to important advances in the design and production of components used in aerospace, automotive, electronics and other industries throughout the world. Computer-Aided Engineering enables an engineer to test design ideas by simulating the function of the part on the computer. Finite Element Analysis (FEA) is one of these computer simulation techniques which is most accurate, versatile and comprehensive technique for solving complex design problems. FEA permits the analysis of these complex structures without the necessity of developing and applying complex equations. FEA program for non-linear stress analysis of elastomers is performed by applying two material models: * Mooney-Rivlin Model * Ogden Model The Mooney-Rivlin model is the most widely used model for elastomer analysis. The basic problem facing the design engineer is how to obtain the material coefficients needed to use these two models in FEA. As expected, the effectiveness of design analysis is directly related to the quality of the material input material coefficients. Akron Rubber Development Laboratory, Inc. (ARDL) has developed a reliable history of standard procedures for determination of these coefficients from experimental test data. This paper will discuss various testing techniques used for developing elastomer material constants. Also, the intent of this paper is to show how aging or service conditions can be incorporated to obtain material coefficients for elastomer parts.

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Sisson, Patterson B., i David K. Faymon. "Digital Control Brings Large Turbofan Benefits to the Regional Jetliner Turbofan Market". W ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-130.

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In keeping with the general industry trend of applying Full Authority Digital Electronic Control (FADEC) technology to small gas turbine engines, Textron Lycoming and Chandler Evans Division of Coltec Industries have developed and qualified a single channel control system for use on the Textron Lycoming LF507-1F turbofan engine. The LF507-1F is the world’s smallest FADEC-equipped airline turbofan engine and is the only FADEC-equipped turbofan developed and certified for the regional jetliner market. The application for this powerplant, the four-engine AVRO International Aerospace RJ Avroliner series of aircraft, began airline service in April of 1993. The FADEC employs modern control algorithms to achieve surge-free operation over the flight envelope while providing rapid transient performance and crisp handling qualities. The control interfaces with the aircraft via an ARINC 429 data link to control each engine automatically to the desired power setting with or without N1 synchronization. A simple hydromechanical backup control provides full dispatch capability in the event of a critical FADEC system failure. In addition, the FADEC includes advanced diagnostics for fault identification to the line replaceable unit (LRU) level without specialized test equipment. This paper describes the architecture, primary features, and development process of the engine control system. Emphasis is placed on the design characteristics and technical challenges unique to the development of an inexpensive control system for the low thrust turbofan market.

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Du, Jikai, i Ali Rajhi. "Ultrasound Phased Array for High Acoustic Attenuation Thick Composite Materials". W ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52298.

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Composite materials and structures are increasingly being applied in aerospace, marine, and wind power industries, as well as in commercial products. One main reason for the scientific interest in composite materials is their tailorable mechanical properties. However, because of the fiber-direction-dependent nature of its physical and mechanical properties, composite material’s property and failure behaviors are usually complex, typically involving various mechanisms depending on applications. Nondestructive testing plays a key role during composite fabrication and maintenance in service. Among the variety of nondestructive techniques available, ultrasound phased array technique has emerged as a promising new approach. Unlike a conventional ultrasound single element transducer, an ultrasound phased array sensor can control and focus acoustic energy to the desired directions and locations. This heightened flexibility and sensitivity is essential given complex shape of modern composite structures. Despite such promise, understanding and application of ultrasound phased array technique is limited due to the anisotropic nature of composite materials, as well as its high acoustic attenuation. Attenuation and velocity dispersion are the two major challenges to the ultrasound evaluation of composite structures; these two factors complicate the control of phased array ultrasound propagation both theoretically and experimentally. This is especially true for thick high attenuation carbon fiber or glass fiber composite materials that have been widely applied in aerospace and wind turbine industries. In our study, ultrasound phased array technique was applied to increase the acoustic penetration power in high acoustic attenuation composite materials. First, ultrasound phased array signal in isotropic materials was studied to calibrate the probe parameters. Then for composite materials, the dependence of ultrasound field on the number of active elements, steering angles, beam focusing laws and on the characteristics of materials was analyzed and optimized through theoretical simulations and experimental evaluations. Results showed that the steering angles and the parameters of beam focusing laws might change the ultrasound beam intensity and uniformity, which had a significant influence on the sensitivity and resolution of the technique; the anisotropic properties of composite materials could distort the ultrasound beam, which made the calibration a necessary and important procedure during practical inspections. The influence of ultrasound frequency and beam angle were also quantitatively evaluated. The proposed research has the potential to apply ultrasound phased array technique to the detection of defects in composite materials and the evaluation of composite structural health. The study of the interaction between ultrasound and composite structures will open the window for the successful application of ultrasound phased array technique.

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Raporty organizacyjne na temat "Aerospace modern industries"

Roye, Thorsten. Unsettled Technology Areas in Deterministic Assembly Approaches for Industry 4.0. SAE International, sierpień 2021. http://dx.doi.org/10.4271/epr2021018.

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Increased production rates and cost reduction are affecting manufacturing in all sectors of the mobility industry. One enabling methodology that could achieve these goals in the burgeoning “Industry 4.0” environment is the deterministic assembly (DA) approach. The DA approach is defined as an optimized assembly process; it always forms the same final structure and has a strong link to design-for-assembly and design-for-automation methodologies. It also looks at the whole supply chain, enabling drastic savings at the original equipment manufacturer (OEM) level by reducing recurring costs and lead time. Within Industry 4.0, DA will be required mainly for the aerospace and the space industry, but serves as an interesting approach for other industries assembling large and/or complex components. In its entirety, the DA approach connects an entire supply chain—from part manufacturing at an elementary level to an OEM’s final assembly line level. Addressing the whole process of aircraft design and manufacturing is necessary to develop further collaboration models between OEMs and the supply chain, including addressing the most pressing technology challenges. Since all parts aggregate at the OEM level, the OEM—as an integrator of all these single parts—needs special end-to-end methodologies to drastically decrease cost and lead time. This holistic approach can be considered in part design as well (in the design-for-automation and design-for-assembly philosophy). This allows for quicker assembly at the OEM level, such as “part-to-part” or “hole-to-hole” approaches, versus traditional, classical assembly methods like manual measurement or measurement-assisted assembly. In addition, it can increase flexibility regarding rate changes in production (such as those due to pandemic- or climate-related environmental challenges). The standardization and harmonization of these areas would help all industries and designers to have a deterministic approach with an end-to-end concept. Simulations can easily compare possible production and assembly steps with different impacts on local and global tolerances. Global measurement feedback needs high-accuracy turnkey solutions, which are very costly and inflexible. The goal of standardization would be to use Industry 4.0 feedback and features, as well as to define several building blocks of the DA approach as a one-way assembly (also known as one-up assembly, or “OUA”), false one-way assembly, “Jig-as-Master,” etc., up to the hole-to-hole assembly approach. The evolution of these assembly principles and the link to simulation approaches are undefined and unsolved domains; they are discussed in this report. They must be discussed in greater depth with aims of (first) clarifying the scope of the industry-wide alignment needs and (second) prioritizing the issues requiring standardization. NOTE: SAE EDGE™ Research Reports are intended to identify and illuminate key issues in emerging, but still unsettled, technologies of interest to the mobility industry. The goal of SAE EDGE™ Research Reports is to stimulate discussion and work in the hope of promoting and speeding resolution of identified issues. SAE EDGE™ Research Reports are not intended to resolve the challenges they identify or close any topic to further scrutiny.

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