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Descripción
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| One of the most recent and promising techniques for the application of thermo-mechanical surface treatments to high reliability metallic components is Laser Shock Processing (LSP), a technique using the high peak power of short pulse lasers to generate an intense shock wave into the treated material finally leading to the generation of a compressive residual stresses field definitely protecting the component against crack initiation and propagation, thus improving its mechanical response and its in-service fatigue life. Laser Shock Processing has revealed itself in the last years as a powerful technique able to substitute with advantage classical surface conditioning techniques used for analogous purposes but implying important unpredictability and environmental drawbacks, as i.e. shot peening. A conceptually relevant feature of Laser Shock Processing is its high degree of predictability allowing for a close control of the thermomechanical effects induced in the treated materials. The development of experimentally consistent numerical prediction models is, however, a key assignment for the development and applicability of the technique to real components and is, in turn, the key for the truly adjusted design of mechanical high reliability elements with maximum warranty of quality and durability. In the present paper, a summary of the developments achieved by the authors in the field of the predictive assessment of Laser Shock Processing is presented along with some practical examples of the design-motivated improvements in different kinds of components achievable by application of the technique. Special emphasis is placed on the realistic consideration of the mechanical behavior of the treated materials under shocking conditions and the analysis of typical LSP configurations in which the mutual interaction of residual stresses and deformations can play a relevant role. | |
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Internacional
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Si |
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Nombre congreso
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XIII Congresso Ibero-Americano de Engenharia Mecânica |
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Tipo de participación
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960 |
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Lugar del congreso
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Lisboa |
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Revisores
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Si |
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ISBN o ISSN
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978-989-95683-4-1 |
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DOI
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Fecha inicio congreso
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23/10/2017 |
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Fecha fin congreso
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26/10/2017 |
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Desde la página
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108 |
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Hasta la página
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108 |
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Título de las actas
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XIII Congresso Ibero-Americano de Engenharia Mecânica |