Modal Testing of Automotive Plastic Scale Models Using an Automated Laser Vibrometry System

Modal testing of plastic scale models is used in the automotive industry to verify finite element models and to predict the dynamics of a full size structure during the design cycle. This paper describes several challenges associated with plastic model testing and analytical correlations and addresses these challenges by using a scanning laser vibrometer system. Measurements and modal analysis results from a test performed on a scale truck cab model are presented.