Vibration Damping Measurement on Car Windshields

  • Balázs Vehovszky Department of Whole Vehicle Engineering, Audi Hungaria Faculty of Automotive Engineering, Széchenyi István University, H-9026 Győr, Egyetem tér 1., Hungary
  • István Horváth Department of Whole Vehicle Development, Audi Hungária Zrt., H-9027 Győr, Audi Hungária út 1., Hungary
  • Karl Slenczka Department of Whole Vehicle Development, Audi Hungária Zrt., H-9027 Győr, Audi Hungária út 1., Hungary
  • Martin Schuster Department of Whole Vehicle Development, Audi Hungária Zrt., H-9027 Győr, Audi Hungária út 1., Hungary
  • Tamás Jakubík Department of Whole Vehicle Engineering, Audi Hungaria Faculty of Automotive Engineering, Széchenyi István University, H-9026 Győr, Egyetem tér 1., Hungary

Abstract

Knowledge of the damping properties of a windshield is a fundamental element of the acoustical characterization of a car. The measuring method of damping for a windshield is presented in the paper. The damping loss factor – as a basic measure of mechanical damping – was determined experimentally by two means: the reverberation time from impact hammer testing as well as the modal behavior from 3D laser scanning vibrometer measurements. The results proved that the modal shapes have a fundamental effect on the measured damping values.

Keywords: windshield vibration, modal analysis, damping loss factor, laser scanning vibrometer
Published online
2018-11-13
How to Cite
Vehovszky, B., Horváth, I., Slenczka, K., Schuster, M. and Jakubík, T. (2019) “Vibration Damping Measurement on Car Windshields”, Periodica Polytechnica Mechanical Engineering, 63(1), pp. 1-6. doi: https://doi.org/10.3311/PPme.11559.
Section
Articles