Potentials of Optical Damage Assessment Techniques in Automotive Crash-Concepts composed of FRP-Steel Hybrid Material Systems

12th International Conference on Damage Assessment of Structures

Dlugosch, M.^1 ; Spiegelhalter, B.^1 ; Soot, T.^1 ; Lukaszewicz, D.^2 ; Fritsch, J.^1 ; Hiermaier, S.^1

Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institut, EMI, Eckerstrasse 4, Freiburg

79104, Germany^1

BMW Group, Vehicle Safety, Knorrstrasse 147, Munich

80788, Germany^2

关键词: Automotive crashes;    Car manufacturers;    Damage mechanism;    Hybrid material systems;    Loading condition;    Optical damages;    Structural concept;    Vehicle structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/842/1/012044/pdf
DOI  :  10.1088/1742-6596/842/1/012044

来源: IOP

【 摘 要 】

With car manufacturers simultaneously facing increasing passive safety and efficiency requirements, FRP-metal hybrid material systems are one way to design lightweight and crashworthy vehicle structures. Generic automotive hybrid structural concepts have been tested under crash loading conditions. In order to assess the state of overall damage and structural integrity, and primarily to validate simulation data, several NDT techniques have been assessed regarding their potential to detect common damage mechanisms in such hybrid systems. Significant potentials were found particularly in combining 3D-topography laser scanning and X-Ray imaging results. Ultrasonic testing proved to be limited by the signal coupling quality on damaged or curved surfaces.