The paint deformation behavior in fully prepainted sheet steel intended for outer automobile body panels is examined in three categories: paint sliding behavior during forming, paint surface roughening during straining leading to loss of coating reflectivity, and dry heat cracking (i.e. time and temperature dependent post-forming paint cracking resulting from viscoelastic strain relaxation). The main findings are: frictional behavior is dictated by the outer coating while pigment particles tend to decrease the measured coefficient of friction; the loss of distinctiveness of image with strain is a result of shear band formation, an inherent deformation mechanism within the polymer coatings; and, dry heat cracks evolve in a two step process where crack nuclei develop during forming and grow as a result of viscoelastic strain relaxation in the coating upon subsequent exposure to heat. Furthermore, pigment particles tend to increase the resistance of a paint coating to the effects of viscoelastic relaxation.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Prepainted Sheet Steel for Outer Automobile Body Panels: Paint Deformation Behavior


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1995



    Publication date :

    1995-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Prepainted Sheet Steel for Outer Automobile Body Panels: Paint Deformation Behavior

    Kyed, P. J. / Matlock, D. K. / SAE | British Library Conference Proceedings | 1995


    Prepainted sheet steel for outer automobile body panels: paint deformation behavior

    Kyed,P.J. / Matlock,D.K. / Bethlehem Steel,US et al. | Automotive engineering | 1995


    Prepainted steel for body parts

    Pietersen, C.A. / Kuyk, C. / Hurkmans, A. | Tema Archive | 1992


    Prepainted steel for body parts

    Pietersen,C.A. / Kuyk,C. / Hurkmans,A. et al. | Automotive engineering | 1992