Academic literature on the topic 'Almen Strip'

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Journal articles on the topic "Almen Strip"

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Wang, Chengyu, Weigang Li, Jianjun Jiang, Xin Chao, Weikui Zeng, Jiang Xu, and Jie Yang. "An Improved Approach to Direct Simulation of an Actual Almen Shot Peening Intensity Test with a Large Number of Shots." Materials 13, no. 22 (November 11, 2020): 5088. http://dx.doi.org/10.3390/ma13225088.

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In existing simulations of the Almen intensity test, arc height is indirectly obtained by an equivalent method including a representative cell, a few shots and equivalent loading. Most of these equivalent methods cannot consider the transverse deformation of the strip, the complex stress state of the plastic hardening layer and process parameters, resulting in deviation from the actual test. This paper introduces an improved and experimentally validated discrete element model (DEM)-finite element model (FEM) to predict the actual Almen intensity. The improvement of this model is mainly reflected in the large and real number of shots involved in the actual Almen intensity test, shot–shot interactions, and real-size solid finite element model of the Almen strip. A new method for calculating the shot stream is proposed based on the test and considering test process parameters such as the mass flowrate, nozzle movement speed and nozzle–workpiece distance. The shot stream impacting the strip with a fully restrained underside was first simulated in improved DEM-FEM to bring the forming energy. As a second step, an implicit solver of the Almen strip FEM calculates the spring-back to simulate strip removal from the holder. The results achieved by the present approach are compared with the results obtained by the experimental results and those in the literature. The results show that the arc height and Almen intensity obtained by the present approach match much better with the literature than the traditional method. Some new results obtained by the improved coupling DEM-FEM method are presented. The influences of the transverse deformation and surface plastic layer on the deformation of the Almen strip are discussed. This improved method provides an alternative characterization method for precision peen forming simulation.
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Liu, Z. Y., C. H. Fu, M. P. Sealy, Y. Zhao, and Y. B. Guo. "Benchmark Burnishing with Almen Strip for Surface Integrity." Procedia Manufacturing 10 (2017): 456–66. http://dx.doi.org/10.1016/j.promfg.2017.07.027.

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Yang, Zhaorui, Jun Su Park, and Youngseog Lee. "A strip holding system for finite element simulation of Almen strip testing." Journal of Mechanical Science and Technology 28, no. 7 (July 2014): 2825–30. http://dx.doi.org/10.1007/s12206-014-0636-y.

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Ciampini, D., M. Papini, and J. K. Spelt. "Modeling the development of Almen strip curvature in vibratory finishing." Journal of Materials Processing Technology 209, no. 6 (March 2009): 2923–39. http://dx.doi.org/10.1016/j.jmatprotec.2008.06.060.

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SOYAMA, Hitoshi, Hiroyuki KUMANO, Kenichi SAITO, and Masumi SAKA. "421 An Evaluation of Cavitation Shotless Peening by Using Almen Strip." Proceedings of Conference of Tohoku Branch 2001.36 (2001): 164–65. http://dx.doi.org/10.1299/jsmeth.2001.36.164.

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Liu, Z. Y., C. H. Fu, M. P. Sealy, and Y. B. Guo. "Prediction and analysis of residual stress and deflections of Almen strip by burnishing." Production Engineering 11, no. 3 (April 6, 2017): 265–74. http://dx.doi.org/10.1007/s11740-017-0736-5.

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Bhuvaraghan, Baskaran, Sivakumar M. Srinivasan, and Bob Maffeo. "Numerical simulation of Almen strip response due to random impacts with strain-rate effects." International Journal of Mechanical Sciences 53, no. 6 (June 2011): 417–24. http://dx.doi.org/10.1016/j.ijmecsci.2011.03.004.

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SOYAMA, Hitoshi, Hiroyuki KUMANO, Kenichi SAITO, and Masumi SAKA. "Evaluation of Peening Intensity of Cavitation Shotless Peening by Using Almen Strip(Student Poster Session)." Proceedings of the Asian Pacific Conference on Fracture and Strength and International Conference on Advanced Technology in Experimental Mechanics 2.01.03 (2001): 1047–50. http://dx.doi.org/10.1299/jsmeatemapcfs.2.01.03.0_1047.

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WATANABE, Yoshihiro, Norihiko HASEGAWA, Kunio NAMIKI, and Atsumi HATANO. "The Development of New Type Almen Strip for Measurement of Peening Intensity on Hard Shot Peening." Transactions of Japan Society of Spring Engineers, no. 37 (1992): 53–57. http://dx.doi.org/10.5346/trbane.1992.53.

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Yang, Z. R., S. H. Park, and Y. S. Lee. "Verification of Finite Element Model Using the Almen Strip Test and Its Applications to Calculate Residual Stress Distribution." Transactions of Materials Processing 21, no. 3 (June 1, 2012): 172–78. http://dx.doi.org/10.5228/kstp.2012.21.3.172.

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Dissertations / Theses on the topic "Almen Strip"

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Ciampini, David. "Impact Velocity, Almen Strip Curvature and Residual Stress Modelling in Vibratory Finishing." Thesis, 2008. http://hdl.handle.net/1807/11190.

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The surface-normal impact velocity distributions, impact frequencies and impact power per unit area were measured using a force sensor in a vibratory finisher for two types of spherical media. These parameters control the degree, rate and character of plastic deformation of a workpiece surface in vibratory finishing. The force sensor was also used to quantify the effect of media type, finisher amplitude, and location within the finisher on the probability distribution of the particle impact velocity normal to the workpiece. It was found that reducing the total media mass in the finisher and moving closer to the wall resulted in a more aggressive process. It was also found that contacts occured periodically within time periods that corresponded to the finisher’s driving frequency. The Almen system was adapted to a vibratory finishing process to characterize the effect of varying process parameters for the purposes of process development and control. Saturation curves for two types of aluminum Almen strips were obtained by finishing at two distinct conditions. Comparison with the normal contact forces and effective impact velocities, measured for both these conditions, provided insight into the mechanics of the vibratory finishing process. An electromagnetic apparatus was constructed to simulate the normal impacts in the vibratory finisher. It was found that surface-normal impacts at velocities comparable to the higher range in the vibratory finisher produced Almen saturation curves similar to those created in the vibratory finisher. This provided support for the modeling approximation of treating all contact events in a vibratory finisher as effective surface-normal impacts, and the accuracy of the effective impact velocity measurement. A model of the process by which Almen strips were plastically deformed by media impacts in vibratory finishing was presented. The motivation was to extend the use of Almen strip measurements as a means of characterizing vibratory finishing through an improved understanding of the process parameters that controlled time-dependent curvature development. Two thicknesses of Almen strip were tested for two finishing conditions. The quantitative agreement between the model saturation curves and the experimental curves was fair, although the overall trends were predicted very well.
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Books on the topic "Almen Strip"

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Woody, Allen, ed. Dread & superficiality: Woody Allen as comic strip. New York: Abrams ComicArts, 2009.

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Alan, Zelenetz, and Cirocco Frank, eds. Alien Legion. Dayton, Ohio: Checker Book Pub. Group, 2005.

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James, Robinson. Illegal alien. Milwaukee, OR: Dark Horse Comics, 2003.

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Alan, Zelenetz, ed. The Alien Legion. New York, NY: Marvel Comics Group, 1986.

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Alan, Zelenetz, and Cirocco Frank, eds. Alien Legion: Slaughterworld. New York, NY: Epic Comics, 1991.

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Alien snow. London: Raintree, 2012.

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Douglas, Fong, ed. Alien rescue. London: Scholastic, 2009.

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Glass, Kathy. Alien apocalypse 2006. Berkeley, Calif: Frog, Ltd., 1997.

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Graphics, Glass House, ed. Alien snow. Mankato, Minn: Stone Arch Books, 2011.

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illustrator, Salazar Edgar 1973, Lobel Benito illustrator, Dym illustrator, Lean Rob illustrator, Strachan Carrie illustrator, Petter Rainer illustrator, Temofonte Saida letterer, and Staggs Cat illustrator, eds. Smallville season eleven: Alien. Burbank, CA: DC Comics, 2015.

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Book chapters on the topic "Almen Strip"

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Champaigne, Jack M. "Performance of Almen Strips Which Are Straightened After Tempering." In Shot Peening, 114–18. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527606580.ch16.

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Conference papers on the topic "Almen Strip"

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Bobba, Dhanooj, Praveen Ramaprabhu, and Harish P. Cherukuri. "An Integrated DEM-FEM Model for Shot Peening Applications." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2885.

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Abstract Shot peening is a commonly used technique for improving the fatigue life of machine components by inducing compressive residual stresses in the surface layers. This process involves plastically deforming the surface layers by impacting with spherical particles at high speeds. The induced residual compressive stresses resist crack propagation and thus increase the fatigue life. The intensity of shot peening, measured using the Almen test, is an essential quantity for ensuring shot peening effectiveness and repeatability. It depends on various process parameters such as the shot speed, shot size, shot material, impact direction, and flow rate. In this study, a novel computational model is developed to simulate the Almen intensity tests on a Type-C strip accurately. The model uses a coupled technique based on the discrete element method (DEM) and the conventional finite element method (FEM). The predicted Almen intensity values agree with analytically calculated values. Results from the parametric studies conducted to analyze the influence of various parameters on the Almen intensity indicate that many different combinations of these parameters can obtain a given Almen intensity although the residual stress fields may vary.
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Bas Butuner, Funda, Ela Alanyalı Aral, and Selin Çavdar. "Transformative Urban Railway: Ankara Commuter Line and Lost Landscape." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.6171.

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Transformative Urban Railway: Ankara Commuter Line and Lost LandscapeFunda Baş Bütüner¹, Ela Alanyalı Aral¹, Selin Çavdar² ¹Middle East Technical University. Department of Architecture. Ankara. Dumlupınar Bulvarı no:1 06800 Ankara Turkey ² Middle East Technical University. Department of City and Regional Planning. Ankara. Dumlupınar Bulvarı no:1 06800 Ankara Turkey E-mail: fbutuner@metu.edu.tr, earal@metu.edu.tr, selin.cavdar@gmail.com Keywords (3-5): urban railway, urban landscape, Ankara, commuter line, landscape infrastructure Conference topics and scale: Urban green space Being major transportation infrastructure of the 19th and early 20th centuries, the impacts of railways on cities have highly directed urban discourses; deforming material edge of cities, encouraging urban extension, formation of new territories, and speeding up urban development. However, in recent decades, with newly emerging discussions on landscape infrastructure, a new idea for a more integrated infrastructure and urban system has started to be formulated. Railway strips, occurring as terrains where solid-void morphology of cities becomes illegible, emerge as generators in the formation of new urban green network. Within this framework, Ankara commuter line that mark outs a route approximately 37 kilometers in length in the city, is a remarkable case for a motivating discussion on railway and landscape confrontation. Penetrating the city in east-west direction, the commuter line integrated with a rural landscape –covering vegetable gardens and creeks- that was serving as a recreational field for citizens until 1950s. However, the transformative nature of the railway, encouraged the development of new urban lands, industrial areas and neighborhoods along its route, and erased the characteristic landscape along the railway. The continuous landscape integrated with green, water and railway infrastructure became fragmented covering only some splits of green and water. In this respect, this study dwells on the lost landscape of the commuter line by mapping the fragmented continuity of the railway, green and water infrastructure from 1950’s until today to show the limited, but potential interaction of these three systems in the current urban fabric. References Allen, S. (1999). Infrastructural Urbanism, in Allen, S. (ed.) Points and Lines: Diagrams and Projects for The City (Princeton Architectural Press, New York) 40-89. Bertolini, L., Spit, T. (1998). Cities on Rails (Routledge, London). Hung, Y. (2013). Landscape Infrastructure: Systems of Contingency, Flexibility, and Adaptability, in Hung, Y., Aquino, G., Waldheim, C., Czerniak, J., Geuze, A., Robinson, A., Skjonsberg, M. (ed.) Landscape Infrastructure (Birkhauser, Basel) 14-19. Tatom, J. (2006). Urban Highways and the Reluctant Urban Realm. C. Waldheim (Ed.). The Landscape Urbanism Reader (Princeton Architectural Press, New York) 179-196. Waldheim, C. (2016). Landscape as Urbanism: A General Theory (Princeton University Press).
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