The fuel efficiency, crashworthiness and gas emission regulations of the cars are very important in the current automotive industries. Therefore, vehicle has to be designed with minimum weight in order to maximize fuel efficiency, reduce the noxious exhaust, and with improved vehicle crashworthiness. However, the use of conventional materials such as steel and aluminium is generally not permitting to get the best solutions against these targets. Composite sandwich structure comprises a particular category of materials that may offer advantages due to their extremely low weight, high flexural and transverse shear stuffiness and corrosion resistance when compared to conventional steel and aluminium alloys. In the current study, a novel Micro-Sandwich structure material has been used to develop an integrated automotive bumper. The material developed in such a way that the amount of resin impregnation is controlled during polymerization in order to obtain a certain amount of dry fibres in the final product. It has been demonstrated that this improves the energy adsorbing capacity of the material during impact. A finite element simulation and experimental test program has been designed to investigate the structure performance of the beam for static and dynamic loading conditions. The experimental tests result has been compared and correlated to the finite element simulation and it is concluded that the proposed material indeed have a potential for automotive application.

Low velocity impact investigation: an experimental and numerical study on automotive bumper made of Semi Impregnated Micro-sandwich composite / Belingardi, Giovanni; Beyene, ALEM TEKALIGN; Martorana, B.; Innocente, F.. - CD-ROM. - (2016), pp. 1-4. (Intervento presentato al convegno ICILSM2016 - International Conference on Impact Loading of Structures and Materials tenutosi a Torino nel 22-26 maggio 2016).

Low velocity impact investigation: an experimental and numerical study on automotive bumper made of Semi Impregnated Micro-sandwich composite

BELINGARDI, Giovanni;BEYENE, ALEM TEKALIGN;
2016

Abstract

The fuel efficiency, crashworthiness and gas emission regulations of the cars are very important in the current automotive industries. Therefore, vehicle has to be designed with minimum weight in order to maximize fuel efficiency, reduce the noxious exhaust, and with improved vehicle crashworthiness. However, the use of conventional materials such as steel and aluminium is generally not permitting to get the best solutions against these targets. Composite sandwich structure comprises a particular category of materials that may offer advantages due to their extremely low weight, high flexural and transverse shear stuffiness and corrosion resistance when compared to conventional steel and aluminium alloys. In the current study, a novel Micro-Sandwich structure material has been used to develop an integrated automotive bumper. The material developed in such a way that the amount of resin impregnation is controlled during polymerization in order to obtain a certain amount of dry fibres in the final product. It has been demonstrated that this improves the energy adsorbing capacity of the material during impact. A finite element simulation and experimental test program has been designed to investigate the structure performance of the beam for static and dynamic loading conditions. The experimental tests result has been compared and correlated to the finite element simulation and it is concluded that the proposed material indeed have a potential for automotive application.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2644907
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