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Quantification of roping in aluminium sheet alloys for car body applications by combining 3D surface measurements with Fourier analysis

  • Carmen Schäfer , Henk-Jan Brinkman , Olaf Engler and Gernot Nitzsche
Published/Copyright: March 12, 2015
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 106 Issue 3

Abstract

The present study introduces a new method to characterise and evaluate the roping behaviour of aluminium sheet alloys of the AA 6xxx series for car body applications. The new approach combines two known methods into a novel powerful tool, (i) the measurement of a 3D surface topography with a white-light interferometer and (ii) the subsequent data analysis by means of Fourier analysis. Use of the white-light interferometer allows analysing roping of deformed samples without the need of additional surface preparation steps, e.g. inking, stoning, etc., which may falsify the surface appearance. The use of data analysis by means of fast Fourier transform allows differentiating between different surface phenomena, e.g. unidirectional component versus isotropic components. It was found that the new approach is capable of giving reliable and reproducible data, which qualifies this method to study roping in aluminium car body sheets in an objective manner.

Keywords: Roping; Fourier analysis; White-light interferometry; Aluminium sheet alloys
* Correspondence address, Prof. Dr. Olaf Engler, Georg-von Boeselagerstr. 21, 53117 Bonn, Germany, Tel.: +49-02285522792, E-mail:

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Received: 2014-08-04
Accepted: 2014-10-22
Published Online: 2015-03-12
Published in Print: 2015-03-11

© 2015, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111173
Keywords for this article
Roping; Fourier analysis; White-light interferometry; Aluminium sheet alloys

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Phase equilibria studies of the “MnO”–Al2O3–SiO2 system in equilibrium with metallic alloy. Part 2: phase equilibria
  5. X-ray stress measurement from an imperfect Debye–Scherrer ring
  6. Effect of heat treatment on the microstructure and tensile properties of Ti-5Al-3Zr-4Mo-3V alloy
  7. Quantification of roping in aluminium sheet alloys for car body applications by combining 3D surface measurements with Fourier analysis
  8. Dissimilar friction stir welding between polycarbonate and AA 7075 aluminum alloy
  9. Evaluation of the corrosion resistance of plasma nitrided austenitic stainless steel
  10. Corrosion performance and microstructural response of A380 matrix alloy reinforced with sol–gel TiO2-coated SiC particles: a perspective on previous studies
  11. Role of chloride in the electrochemical behaviour of AZ31B Mg alloy
  12. Implications of solute super-saturation in growth of vaporisation-induced recrystallised grains during heat treatment in Ni-base superalloys
  13. Rapid synthesis of Mn3O4 powder from pyro-synthesis of ethylene glycol–metal nitrate precursor assisted by nitric acid
  14. Production of bioactive glass-derived scaffolds using citric acid porogen
  15. Short Communications
  16. Microstructure and mechanical properties of deformed Mg–Mn–Sn alloys
  17. Fast microwave synthesis and characterization of MgTi2O5
  18. Time dependent synthesis of crystalline Bi2S3 and its application as a sensitizer in SnO2 based solar cells
  19. Synthesis of cobalt-doped CdS (CdS:Co) by a simple and rapid microwave activated method and investigating optical properties
  20. People
  21. In Memoriam Volker Schumacher
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