Ponencia
Preliminary Study on the Onset of Necking Detection Using DIT in Tensile Tests
Autor/es | Palomo Vázquez, David
Martínez Donaire, Andrés Jesús López Fernández, José Andrés Borrego Puche, Marcos Vallellano Martín, Carpóforo |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Mecánica y Fabricación |
Fecha de publicación | 2022-07-22 |
Fecha de depósito | 2023-03-22 |
Publicado en |
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ISBN/ISSN | 1662-9795 |
Resumen | The experimental detection of localized necking is an important issue in sheet metal forming. Today, the most common and extended techniques are strain-based methods using digital image correlation (DIC). The present work ... The experimental detection of localized necking is an important issue in sheet metal forming. Today, the most common and extended techniques are strain-based methods using digital image correlation (DIC). The present work discuses a thermal methodology to detect the onset of necking in metals based on the analysis of the temperature gradient using digital infrared thermography (DIT). A series of tensile tests of H240LA-O3 high-strength steel of 1.2mm thickness is analysed using DIC and DIT techniques. It is proposed that necking initiates when the temperature difference at a reference distance from the necking point reaches a critical value, which allows identifying the necking time and estimating the limit strains from the visible images using circle grid analysis. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España Agencia Estatal de Investigación. España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | PGC2018-095508-B-I00 |
Cita | Palomo Vázquez, D., Martínez Donaire, A.J., López Fernández, J.A., Borrego Puche, M. y Vallellano Martín, C. (2022). Preliminary Study on the Onset of Necking Detection Using DIT in Tensile Tests. En 25th International Conference on Material Forming, ESAFORM 2022. En Key Engineering Materials, vol. 926 (710-716), Braga: Trans Tech Publications Ltd.. |
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