RT Journal Article T1 Optical technique for the automatic detection and measurement of surface defects on thin metallic wires A1 Sánchez Brea, Luis Miguel A1 Siegmann, Philip A1 Rebollo, María Aurora A1 Bernabeu Martínez, Eusebio AB In industrial applications of thin metallic wires it is important to characterize the surface defects of the wires. We present an optical technique for the automatic detection of surface defects on thin metallic wires (diameters, 50–2000 µm) that can be used in on-line systems for surface quality control. This technique is based on the intensity variations on the scattered cone generated when the wire is illuminated with a beam at oblique incidence. Our results are compared with those obtained by atomic-force microscopy and scanning-electron microscopy. PB The Optical Society Of America SN 1559-128X YR 2000 FD 2000-02-01 LK https://hdl.handle.net/20.500.14352/59240 UL https://hdl.handle.net/20.500.14352/59240 LA eng NO 1. T. K. Millard, T. A. Herchenreder, “Automatic diameter measurement: state of the art”, Wire J. Intern. 24(12), 61–69 (1991). 2. J. F. Fardeau, “New laser sensor for wire diameter measurement”, Wire J. Intern. 22(1), 42–51 (1989). 3. I. Serroukh, E. Bernabeu, L. M. Sánchez-Brea, “A geometrical model for wire optical diffraction selected by experimental statistical analysis”, Opt. Eng. 34, 1319–1325 (1999). 4. G. W. Rowe, An Introduction to the Principles of Metalworking (Edward Arnold, London, 1965). 5. L. M. Sánchez-Brea, J. A. Gómez-Pedrero, E. Bernabeu, “Measurement of surface defects on thin steel wires by atomic force microscopy”, Appl. Surf. Sci. 150, 125–130 (1999). 6. D. J. Whitehouse, “Surface metrology”, Meas. Sci. Technol. 8, 955–972 (1997). 7. C. López, A. F. Doval, B. V. Dorrío, J. Blanco-García, J. Bugarín, J. M. Alén, A. Fernández, J. L. Fernández, M. Pérez-Amor, B. G. Tejedor, “Fibre optic reflectometric technique for the automatic detection and measurement of surface cracks”, Meas. Sci. Technol. 9, 1413–1431 (1998). 8. S. Gómez, K. Hale, J. Burrows, B. Griffiths, “Measurements of surface defects on optical components”, Meas. Sci. Technol. 9, 607–616 (1998). 9. K. I. Jolic, C. R. Nagarajah, W. Thompson, “Non-contact, optically based measurement of surface roughness of ceramics”, Meas. Sci. Technol. 5, 671–684 (1994). 10. L. M. Sánchez-Brea, P. Siegmann, E. Bernabeu, F. Pérez-Quintian, M. A. Rebollo, C. A. Raffo, “Medición de la Rugosidad y localización de fallas en hilos metálicos por métodos ópticos”, presented at the 83rd Reunión Nacional de Física, La Plata, Argentina, 21–25 September 1998. 11. F. Pérez-Quintian, M. A. Rebollo, N. G. Gaggioli, C. A. Raffo, “Optical methods for on line surface wire testing”, presented at the Seventh European Conference on Nondestructive Testing, Copenhagen, Denmark, 26–29 May 1998. 12. S. A. Stefani, C. R. Nagarajah, R. Willgoss, “A surface inspection technique for continuously extruded cylindrical products”, Meas. Sci. Technol. 10, N21–N25 (1999). 13. T. K. Millard, “Computer simulation of defect detection”, Wire Ind. 58, 141–145 (1991). 14. C. Babu Rao, A. V. Ananthalakshmi, R. Kesavamoorthy, “Laser scattering from the surface of thin wires at oblique illumination”, in Optics and Optoelectronics Theory, Devices and Applications, O. Nijhawan, A. K. Gupta, A. K. Musla, K. Singh, eds. (Narosa, House, New Delhi, 1999), pp. 298–301. 15. C. Babu Rao, A. V. Ananthalakshmi, R. Kesavamoorthy, “Localization of surface roughness of thin wires using laser scattering”, presented at the Fourteenth World Conference on Nondestructive Testing, New Delhi, 8–13 December 1996. 16. J. B. Keller, “Geometrical theory of diffraction”, J. Opt. Soc. Am. 52, 116–130 (1962). [PubMed] 17. H. Hönl, A. W. Maue, K. Westpfahl, “cap. B-II, Beugung un konvexen Körpern ohne Kanten”, in Handbuch der Physik, S. Flügge, ed. (Springer-Verlag, Berlin, 1961), Vol. XXV, p. 1. NO © Optical Society of America.The authors are grateful to A. González-Cano for his suggestions and discussions in the development of this research. The authors also express their gratitude to the European Union (EU) for the financial support of this research within the framework of EU research program SMT4, Standards Measurement and Testing; project SMT4-CT97-2184, DEFCYL: Detection of Defects in Cylindrical Surfaces, and Comisión Interministerial de Ciencia y Tecnología of Spain project TAP-98-1358-CE. NO Unión Europea (UE) NO Comisión Interministerial de Ciencia y Tecnología (CICYT), España DS Docta Complutense RD 30 abr 2024