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Stone Impact Damage to Automotive Paint Finishes: Post Impact Damage Analysis
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Abstract
Automotive car bodies are subject to impact damage by stones lofted by front tires or from passing vehicles. Velocities of stone impact can reach values much higher than the moving automobile. Stone impact damage can result in paint loss and a possible corrosion problem due to damage at the metal-polymer interface. This work describes the application of several complementary techniques to evaluate impact damage. These techniques include Electrochemical Impedance Spectroscopy (EIS), Thermal Wave Imaging (TWI) and Acoustic Microscopy (AM) The advantages offered by each technique are discussed.
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Authors
- A. C. Ramamurthy
- T. Ahmed - Wayne State Univ., Institute for Manufacturing Research, Detroit, MI
- L. D. Favro - Wayne State Univ., Institute for Manufacturing Research, Detroit, MI
- R. L. Thomas - Wayne State Univ., Institute for Manufacturing Research, Detroit, MI
- D. K. Hohnke - Scientific Research Staff, Ford Motor Co., Dearborn, MI
- R. P. Cooper - Scientific Research Staff, Ford Motor Co., Dearborn, MI
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Citation
Ramamurthy, A., Ahmed, T., Favro, L., Thomas, R. et al., "Stone Impact Damage to Automotive Paint Finishes: Post Impact Damage Analysis," SAE Technical Paper 930051, 1993, https://doi.org/10.4271/930051.Also In
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