Process Design of Vinyl-Coated Metal Sheet Stamping for Prevention of Delamination and Wrinkling by DNN-Based Multi-Objective Optimization
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View abstract on PubMed
Summary
This summary is machine-generated.This study introduces a deep neural network (DNN) framework to optimize vinyl-coated metal (VCM) stamping, preventing defects like delamination and wrinkling in home appliances under harsh conditions.
Area Of Science
- Materials Science
- Manufacturing Engineering
- Computational Mechanics
Background
- Vinyl-coated metal (VCM) sheets are increasingly used in home appliances.
- Forming VCM sheets requires optimized processes to avoid defects like delamination and wrinkling, particularly under elevated temperature and humidity.
- Existing methods struggle to balance defect prevention with process efficiency.
Purpose Of The Study
- To develop a deep neural network (DNN)-based multi-objective optimization framework for VCM sheet stamping.
- To establish a delamination limit diagram (DLD) accounting for environmental conditions.
- To identify optimal stamping parameters that simultaneously minimize delamination and wrinkling.
Main Methods
- Experimental determination of a delamination limit diagram (DLD) using limit dome height and immersion tests.
- Creation of a finite element (FE) dataset for training a DNN surrogate model.
- Application of Pareto-based optimization using the trained DNN model to balance competing objectives.
- Validation of optimal parameters through FE simulations.
Main Results
- A highly accurate DNN surrogate model was developed from FE data.
- The DNN-Pareto framework successfully identified optimal stamping parameters.
- FE simulations confirmed the simultaneous suppression of delamination and wrinkling within the DLD.
- The optimized process ensures high surface quality and environmental durability for VCM sheets.
Conclusions
- The proposed DNN-Pareto framework offers an efficient and reliable method for defect prediction and optimization in VCM stamping.
- This approach enhances the manufacturing of VCM-based home appliances by ensuring product quality and durability.
- The study provides a robust tool for addressing complex forming challenges in coated metal sheets.
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