Giuseppe D'Angelo - Academia.edu (original) (raw)
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The patent refers to a new system for quality analysis of laser welding which is reference free
The patent refers to a new system for quality analysis of laser welding which is reference free
Optics and Lasers in Engineering, 2003
Nowadays, power semiconductor laser diode arrays are becoming a widespread source for a large var... more Nowadays, power semiconductor laser diode arrays are becoming a widespread source for a large variety of industrial applications. In particular, the availability of low-cost high-power laser diode arrays makes their use possible in the industrial context for material cutting, welding, diagnostics and processing. In the above applications, the exact control of the beam quality plays a very important role because it directly affects the reliability of the final result. In this paper, we present two different approaches useful for the characterization of the beam quality in laser diode arrays. The first one, starting from total intensity measurements on planes orthogonal to the beam propagation path, is able to deduce the working conditions of each laser setting up the array. The second one is aimed at the measurement of a global quality factor of the array itself; to this end, the empirical extension of the M 2 concept to composite beams is presented along with some experimental results. As the first technique is especially intended for the non-destructive detection of design problems in the array itself and in the bias circuitry, the second one represents a powerful tool for the rapid on-line diagnostics of the laser beam during its use.
2003 International Conference Physics and Control. Proceedings (Cat. No.03EX708)
A-Real-time monitoring of the laser-based applications is becoming a main issue for quality analy... more A-Real-time monitoring of the laser-based applications is becoming a main issue for quality analysis in the steel manufacturing industry. The paper suggests a solution achieving an automated real-time quality inspection in laser welding applications. A composite system composed of softcomputing and traditional techniques has been considered for itsposifive impact on the reduced computational once compared with more traditional approaches.
Proceedings of the 17th great lakes symposium on Great lakes symposium on VLSI - GLSVLSI '07, 2007
The on-line monitoring and detection of defects in laser welding is a basic manifacturing require... more The on-line monitoring and detection of defects in laser welding is a basic manifacturing requirement in several applicative contexts, including vehicle assembly in automotive production. The speed of assembly in modern industry and the large amount of data to be acquired and elaborated pose severe real-time constraints and lead to the need of extremely short processing latencies. In this work,
The patent refers to a new system for quality analysis of laser welding which is reference free
The patent refers to a new system for quality analysis of laser welding which is reference free
Optics and Lasers in Engineering, 2003
Nowadays, power semiconductor laser diode arrays are becoming a widespread source for a large var... more Nowadays, power semiconductor laser diode arrays are becoming a widespread source for a large variety of industrial applications. In particular, the availability of low-cost high-power laser diode arrays makes their use possible in the industrial context for material cutting, welding, diagnostics and processing. In the above applications, the exact control of the beam quality plays a very important role because it directly affects the reliability of the final result. In this paper, we present two different approaches useful for the characterization of the beam quality in laser diode arrays. The first one, starting from total intensity measurements on planes orthogonal to the beam propagation path, is able to deduce the working conditions of each laser setting up the array. The second one is aimed at the measurement of a global quality factor of the array itself; to this end, the empirical extension of the M 2 concept to composite beams is presented along with some experimental results. As the first technique is especially intended for the non-destructive detection of design problems in the array itself and in the bias circuitry, the second one represents a powerful tool for the rapid on-line diagnostics of the laser beam during its use.
2003 International Conference Physics and Control. Proceedings (Cat. No.03EX708)
A-Real-time monitoring of the laser-based applications is becoming a main issue for quality analy... more A-Real-time monitoring of the laser-based applications is becoming a main issue for quality analysis in the steel manufacturing industry. The paper suggests a solution achieving an automated real-time quality inspection in laser welding applications. A composite system composed of softcomputing and traditional techniques has been considered for itsposifive impact on the reduced computational once compared with more traditional approaches.
Proceedings of the 17th great lakes symposium on Great lakes symposium on VLSI - GLSVLSI '07, 2007
The on-line monitoring and detection of defects in laser welding is a basic manifacturing require... more The on-line monitoring and detection of defects in laser welding is a basic manifacturing requirement in several applicative contexts, including vehicle assembly in automotive production. The speed of assembly in modern industry and the large amount of data to be acquired and elaborated pose severe real-time constraints and lead to the need of extremely short processing latencies. In this work,