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Integrating Optical Draw-In Measurements with Finite Element Analysis for Enhanced Process Insights in Sheet Metal Forming
Tata Steel, The Netherlands.
Tata Steel, The Netherlands.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.ORCID iD: 0000-0002-6526-976x
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.ORCID iD: 0000-0001-9889-6746
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2025 (English)In: MATEC Web Conferences, EDP Sciences, 2025, Vol. 408, article id 01065Conference paper, Published paper (Refereed)
Abstract [en]

Accurate monitoring of draw-in behaviour during sheet metal forming is crucial for understanding material flow, optimizing process parameters, and validating finite element (FE) simulations. This study presents an integrated approach combining high-resolution optical measurement, laser displacement sensors, and numerical simulations to analyse draw-in variations during the first forming operation of an automotive front door inner panel. A dedicated optical system was employed to capture sequential images of the blank edge, which were calibrated and processed using computer vision techniques to extract precise draw-in values at predefined locations. The results demonstrate that optical monitoring provides reliable insights related to the sheet metal forming process, highlighting the influence of real-world process disturbances. Furthermore, the study explores the feasibility of integrating measured draw-in data into an adaptive control framework, applying artificial intelligence techniques to refine process stability. By utilizing experimental data alongside numerical predictions, this methodology enhances process understanding and enables data-driven decision-making in industrial sheet metal forming. The findings contribute to the development of intelligent forming control strategies, bridging the gap between modelling and real-world manufacturing conditions to improve product quality and production efficiency.

Place, publisher, year, edition, pages
EDP Sciences, 2025. Vol. 408, article id 01065
Series
MATEC Web of Conferences, E-ISSN 2261-236X ; 408
Keywords [en]
Sheet Metal Forming, Draw-in, Finite Element Analysis, Artificial Neural Network
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
URN: urn:nbn:se:bth-27833DOI: 10.1051/matecconf/202540801065ISI: 001510293900061OAI: oai:DiVA.org:bth-27833DiVA, id: diva2:1957651
Conference
44th Conference of the International Deep Drawing Research Group (IDDRG 2025), Lisbon, June 1-5, 2025
Available from: 2025-05-12 Created: 2025-05-12 Last updated: 2025-10-15Bibliographically approved
In thesis
1. Towards Sustainable and Intelligent Manufacturing Processes: Data-Driven Insights from Automotive Manufacturing
Open this publication in new window or tab >>Towards Sustainable and Intelligent Manufacturing Processes: Data-Driven Insights from Automotive Manufacturing
2025 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Global manufacturing is entering an era of unprecedented variability in material properties, driven by sustainability goals and market volatility. The adoption of recycled steels introduces supplier-specific differences, while cost-reduction strategies and geopolitical disruptions (tariffs, trade barriers, and resource shortages) further amplify process scatter. These dynamics challenge conventional quality control in automotive sheet metal forming and demand intelligent, adaptable production systems.

This dissertation addresses how data-driven methods can strengthen process robustness without major infrastructure changes. Three guiding hypotheses are explored: (H1) machine learning can provide insights into the impact of input variations; (H2) synthetic data can supplement or replace operational data for model development; and (H3) existing sensor signals can be reinterpreted to reduce reliance on additional instrumentation.

A hybrid methodology combining finite element simulations, stochastic modeling, and industrial press shop data was developed. Key contributions include: (1) generation of synthetic datasets for predictive modeling of draw-in and cushion force; (2) application of unsupervised learning for early detection of anomalous material batches; and (3) a novel process monitoring metric, process work, derived from existing sensors to monitor process health.

The findings provide a framework for integrating intelligent data-driven tools into legacy systems, supporting the transition toward resilient and sustainable manufacturing practices.

Place, publisher, year, edition, pages
Karlskrona: Blekinge Tekniska Högskola, 2025. p. 175
Series
Blekinge Institute of Technology Doctoral Dissertation Series, ISSN 1653-2090 ; 2025:16
Keywords
Data-Driven Manufacturing, Machine Learning in Manufacturing, Process Monitoring and Control, Sheet Metal Forming
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:bth-28765 (URN)978-91-7295-517-2 (ISBN)
Public defence
2025-12-16, C413A, BTH, Karlskrona, 09:15 (English)
Opponent
Supervisors
Available from: 2025-11-03 Created: 2025-10-15 Last updated: 2025-12-10Bibliographically approved

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Pilthammar, JohanBarlo, AlexanderAeddula, Omsri

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