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- W2023441778 abstract "As more powerful solid state laser sources appear on the market, new applications become technically possible and important from the economical point of view. For every process a preliminary optimization phase is necessary. The main parameters, used for a welding application by a high power Nd-YAG laser, are: pulse energy, pulse width, repetition rate and process duration or speed. In this paper an experimental methodology, for the development of an electrooptical laser spot welding monitoring system, is presented. The electromagnetic emission from the molten pool was observed and measured with appropriate sensors. The statistical method `Parameter Design' was used to obtain an accurate analysis of the process parameter that influence process results. A laser station with a solid state laser coupled to an optical fiber (1 mm in diameter) was utilized for the welding tests. The main material used for the experimental plan was zinc coated steel sheet 0.8 mm thick. This material and the related spot welding technique are extensively used in the automotive industry, therefore, the introduction of laser technology in production line will improve the quality of the final product. A correlation, between sensor signals and `through or not through' welds, was assessed. The investigation has furthermore shown the necessity, for the modern laser production systems, to use multisensor heads for process monitoring or control with more advanced signal elaboration procedures." @default.
- W2023441778 created "2016-06-24" @default.
- W2023441778 creator A5091848596 @default.
- W2023441778 date "1994-09-07" @default.
- W2023441778 modified "2023-09-25" @default.
- W2023441778 title "Method for laser spot welding monitoring" @default.
- W2023441778 doi "https://doi.org/10.1117/12.184741" @default.
- W2023441778 hasPublicationYear "1994" @default.
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