Abstract
With the goal of ensuring the security of passengers for automotive industry, the present work addresses the temperature and impact speed envelope allowing ductile failure of plasticized PVC to be obtained. A database of about 250 test results has been constructed for various conditions at ten test temperatures, four impact speeds and two specimen geometries (with or without scoring). The desired ductile failure was characterized by the shape of the load versus deflection curve together with the fracture surface morphology obtained. The temperatures for obtaining ductile failure threshold (\(T_{\mathrm {dth}}\)) have been plotted as a function of the impact speeds for the two geometries. A gap of 20 \(^{\circ }\)C on the \(T_{\mathrm {dth}}\) was highlighted between the two geometries. Additionally, the impact strength of the plasticized PVC under study was estimated to be 0.25 kJ/m\(^2\).
Highlights
Airbag spreading is a major concern for the security of the passengers by the automotive industry
The present study introduces the new concept of Ductile Failure Threshold Temperature (Tdth), which is a temperature higher than the Ductile to Brittle Transition Temperature (DBTT), and located at the intersection between the transition zone and the beginning of the upper shelf energy
Tailoring the material and the geometry of the skin of the dashboard around the airbag window is a major concern for the security of passengers by the automotive industry
Summary
Airbag spreading is a major concern for the security of the passengers by the automotive industry. The design and elaboration of the dashboard is one of the key features to obtain the required specifications. Plasticized PVC skins are commonly used for the top surface of the three layers of the dashboard. The impact speed was estimated to be 25 m/s. The three pictures on the right hand side corresponded to the deformed skin at the onset of the expansion of the bag (in white)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
