Multi-wave light technology enabling closed-loop in-process quality control for automotive battery assembly with remote laser welding

Franciosa, Pasquale; Sun, Tianzhu; Ceglarek, Darek; Gerbino, Salvatore; Lanzotti, Antonio

doi:10.1117/12.2526075

Cited by 8 publications

(3 citation statements)

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“…As laser welding is a complex phenomenon that is influenced by multiple parameters, multiple tasks have to be accomplished, as the work of Kim et al shows [13] . Another study carried out by Franciosa et al [14] developed a method for closed-loop in-process quality control in battery assembly lines. It is based on a holistic approach exploiting the potential use of light-based technology.…”

Section: Introductionmentioning

confidence: 99%

Laser welding in e-mobility: process characterization and monitoring

Angeloni

2023

Materials Research Proceedings

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Abstract. Nowadays car manufacturers have to face the challenge of electric mobility transition and it is therefore becoming an industrial priority to accomplish a large-scale battery manufacturing based on high production rates and zero-defect processes that must be obtained over a very high variety of products. The above challenges are currently examined, at the Department of Industrial Engineering of the University of Bologna, by studying and optimizing laser processes (manly cutting and welding) in case of battery fabrication and assembly. Materials investigated are manly pure copper and aluminum, processed by means of different sources, wavelengths and scanning heads. In order to reach the quality targets requested by the market, an in-process monitoring system is implemented as well as physical and data driven simulation models are under development. Finally, comparisons between the monitoring output, the keyhole simulation results, and experimental data will be carried out.

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Section: Introductionmentioning

confidence: 99%

Laser welding in e-mobility: process characterization and monitoring

Angeloni

2023

Materials Research Proceedings

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“…In the automotive field, the application of laser welded aluminum alloys has become very popular in the last years, both in structural (car-body) and electric applications (batteries) [16,17] and the search for optimized processes that guarantee good versatility and high weld quality is of utmost importance. In those fields the application of filler wire has proven to be very beneficial [18], since different alloys, thicknesses and joint configurations are involved.…”

Section: Introductionmentioning

confidence: 99%

Laser welding with and without filler wire of aluminum sheets produced by rolling and additive manufacturing for e-mobility applications

Ascari

2023

Materials Research Proceedings

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Abstract. One of the most critical factors to be taken into consideration in laser welding of aluminum alloys is the formation of pores in the fused zone, which depends strictly on the semi-finishing format of the parent sheets. According to these considerations the present paper deals with welding of AA6082 sheets with additively manufactured AlSi10 ones in a configuration that is typical for the production of casings for batteries for the e-mobility field. In order to understand the role of process strategies on weld bead quality, both autogenous welding and welding with filler wire are investigated and the eventual benefits of applying a wobbling beam shaping is also considered. For any of the above-mentioned strategies, the role of process parameters, such as laser power, welding speed, filler wire speed and wobbling, is underlined, with particular reference to the formation of pores and defects.

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“…surface points, trim points, hemline, etc.) on sheet metal parts is increasingly done by using 3D optical scanners, non-contact metrology gauges that leverage multi-wave light technologies 18 . 3D optical scanners have the capability to measure highly dense cloud-pf-points on a relatively large coverage area of up to 500 × 500 in a short cycle time.…”

Section: Introductionmentioning

confidence: 99%

3D convolutional neural networks to estimate assembly process parameters using 3D point-clouds

Sinha

Glorieux

Franciosa

et al. 2019

Multimodal Sensing: Technologies and Applications

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Multi-wave light technology enabling closed-loop in-process quality control for automotive battery assembly with remote laser welding

Abstract: Please refer to published version for the most recent bibliographic citation information. If a published version is known of, the repository item page linked to above, will contain details on accessing it.

Cited by 8 publications

References 20 publications

Laser welding in e-mobility: process characterization and monitoring

Laser welding in e-mobility: process characterization and monitoring

Laser welding with and without filler wire of aluminum sheets produced by rolling and additive manufacturing for e-mobility applications

3D convolutional neural networks to estimate assembly process parameters using 3D point-clouds

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