Abstract
The main objective of this study is to evaluate the influence of several industrial operating conditions in the occurrence of the defect (air bubbles) in a wet bonding process of two pieces (a glass and an electronic display). The study of the influence of operating conditions in business targets is of great interest to the community of process engineers, to ensure the long-term stability of the process, as this involves complex factors. It is also relevant for the development of Data-driven approaches to support Real-Time System Monitoring.
In this work, we propose to build a multinomial logistic regression model that can assess the probability of a bonded kit (glass and electronic display) having a defect in the filling material, taking into account process operating conditions. The study was conducted in a retrospective evaluation and consisted of 659 bonded kits randomly selected from a reference period. We evaluated multiple factors in the construction of a multinomial logistic regression model with 3 logit functions. The technique used to select variables to be included in the model, was the stepwise technique by choosing the smallest p-value for the variable entering in the model.
Of the modelling process through multinomial logistic regression have resulted five operating conditions that have statistical significance and that can contribute as an auxiliary for the prediction of a defect.
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Acknowledgements
This work has been supported by FCT - Fundação para a Ciência e Tecnologia within the R&D Units Project Scope: UIDB/00319/2020.
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Vaz, P., Braga, A.C., Carvalho, M.S., Menezes, G. (2021). Predicting Product Quality from Operating Conditions Based on Multinomial Logistic Regression. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2021. ICCSA 2021. Lecture Notes in Computer Science(), vol 12952. Springer, Cham. https://doi.org/10.1007/978-3-030-86973-1_38
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DOI: https://doi.org/10.1007/978-3-030-86973-1_38
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