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| Format: | Artículo científico |
| Sprache: | en |
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Universidad de Tarapacá
2015
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=77241115010 |
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Inhaltsangabe:
- Monitoring of carbon steels welded joints by magnetic Barkhausen noise Claudia P. Serna-Giraldo Linilson R. Padovese Ingeniería non non heat heat signal analysis When a variable magnetic field is applied to a ferromagnetic material, it has been observed that, next to the coercive field (Hc), rise in induction (B) takes place through abrupt jumps known as Barkhausen jumps. In this research, the microstructure variation in carbon steel welded joints was monitored by the Magnetic Barkhausen Noise (MBN). The samples were welded by SMAW process, in which both one-pass and two-pass were applied. Microhardness and microstructure were also characterized. The MBN signal was measured and analysed by means of several frequency and time domain parameters. Furthermore, maps of the welded steel surfaces were plotted. The variation of the MBN parameters was correlated to those of the microhardness and microstructure. The results allowed identifying a heat-affected zone (HAZ) of the welded joint using the MBN signals. 2015 artículo científico 0718-3291 https://www.redalyc.org/articulo.oa?id=77241115010 en http://www.redalyc.org/revista.oa?id=772 Ingeniare. Revista Chilena de Ingeniería application/pdf Universidad de Tarapacá Ingeniare. Revista Chilena de Ingeniería (Chile) Num.3 Vol.23