IMPLEMENTATION OF DATA COLLECTION TECHNOLOGIES IN UV-CURED PREPREG MANUFACTURING PROCESSES

Abstract

In this paper, recent advances are presented to optimize an automated process for manufacturing fiberglass composites, based on the production of ultraviolet (UV)-cured fiberglass prepregs. This innovative technology enhances both process efficiency and the quality of the final product.

This work focuses on monitoring the manufacturing process using specific sensors, such as laser measurement devices and thermocouples, with the aim of controlling key process parameters, including the impregnation temperature and the thickness of the resin layer deposited on the dry fabric. Continuous monitoring, enabled by the integration of a data acquisition and analysis platform, makes it possible to improve both the quality and efficiency of the process. It also facilitates the development of models for implementing adaptive controls, issuing reprocessing instructions, and validating product quality in real time.

Within this framework, temperature at various stages of the process and the resin content in the prepreg have been monitored and analyzed, establishing their correlation with machine parameters that govern the impregnation process. Resin content was measured using a newly patented device (EP 23382517.3), and the results were compared with fiber content measurements obtained through weight difference analysis.

In this project, the UV-curing prepreg manufacturing process was successfully monitored, enabling real-time visualization and analysis of key process parameters. This revealed a clear correlation between these parameters and the resin content, laying the foundation for future full machine automation.