Using data mining techniques to investigate the correlation between surface cracks and flange lengths in deep drawn sheet metals

Research output: Journal contributionsConference article in journalResearchpeer-review

Authors

A problem during manufacturing of body parts in the automobile industry is the frequent occurrence of surface cracks in sheet metal cold forming processes. In this paper, we compare different supervised data mining techniques to predict cracks in deep-drawn sheet metals using their flange lengths as correlating features. Inline images of sheet metals are taken during the deep drawing process through cameras that are installed in every stage of a six-stage press line. A commercial software is used to label the images as defective and non-defective. Additionally, flange lengths, which generally correlate with forces set at the machines, are measured along the periphery of the sheets. The results are promising, as the models achieved satisfactory accuracy rates, albeit with some margin for improvement. This paper aims to choose a binary classification algorithm that is best suitable for the given dataset. Furthermore, the results provide an insight on the correlation of flange lengths with the occurrence of cracks, which can be used for online parameter adjustments of the machines in the future.

Original languageEnglish
JournalIFAC-PapersOnLine
Volume52
Issue number13
Pages (from-to)851-856
Number of pages6
ISSN2405-8971
DOIs
Publication statusPublished - 01.09.2019
Event9th International Federation of Automatic Control Conference on Manufacturing Modelling, Management and Control - 2019: Digital, Resilient and Sustainable Manufacturing 4.0 - Berlin, Germany
Duration: 28.08.201930.08.2019
Conference number: 9
https://blog.hwr-berlin.de/mim2019/

    Research areas

  • Classifier evaluation, Cold forming, Computer vision, Data mining, Deep drawing, Quality control, Surface inspection
  • Engineering

Recently viewed

Publications

  1. Using the three horizons approach to explore pathways towards positive futures for agricultural landscapes with rich biodiversity
  2. Numerical study of electrode vaporization rates in an Automotive HVDC Relay in hydrogen and open air in a short circuit situation
  3. Zu den Voraussetzungen einer Musterfeststellungsklage bezüglich Schadensersatzansprüchen von Käufern abgasmanipulierter Diesel-Pkw
  4. A Systematic Review and Meta-analysis of the Impact of Mindfulness-Based Interventions on the Well-Being of Healthcare Professionals
  5. A statistical study of the spatial evolution of shock acceleration efficiency for 5 MeV protons and subsequent particle propagation
  6. Blue-green light is required for a maximized fatty acid unsaturation and pigment concentration in the microalga Acutodesmus obliquus
  7. Die strafrechtliche Verantwortlichkeit deutscher Soldaten bei Auslandseinsätzen. An der Schnittstelle von Strafrecht und Völkerrecht
  8. Modelling elephant corridors over two decades reveals opportunities for conserving connectivity across a large protected area network
  9. Physico-chemical characteristics affect the spatial distribution of pesticide and transformation product loss to an agricultural brook
  10. Wie entfalten Reallabore Wirkung für die Transformation? Eine embedded-agency perspective zur Analyse von Wirkmechanismen in Reallaboren
  11. Stressing the Relevance of Differentiating between Systematic and Random Measurement Errors in Ultrasound Muscle Thickness Diagnostics
  12. EU-US-Privacy-Shield ungültig; Einzelfallprüfung für Standardvertragsklauseln - Anmerkung zu EuGH, Urteil vom 16. Juli 2020 (Rechtssache C-311/18)
  13. The well-being and work-related stress of senior school leaders in Wales and Northern Ireland during COVID-19 "educational leadership crisis"