1. compcrash Characterisation of crash behaviour of composites towards future lightweight road vehicles Ph.D. Student at Swerea SICOMP – Structural design thomas.bru@swerea.se Thomas Bru 1| Energimyndigheten, Thomas Bru | 9 Oct 2014

2. Overview Starting date: Oct 2011 (for me Oct 2013) Finish date: May 2016 EM project number: 34181-1 Budget: 4.5 MSEK 2| Energimyndigheten, Thomas Bru | 9 Oct 2014 Characterisation of crash behaviour of composites towards future lightweight road vehicles

3. Composites applications 787 composite fuselage Aerospace Column Repair Sport Construction Light High performance Corrosion resistance 3| Energimyndigheten, Thomas Bru | 9 Oct 2014

4. Composites applications 4| Energimyndigheten, Thomas Bru | 9 Oct 2014 Aston Martin V12 Vanquish after Hill (2003) Automotive Light High performance Corrosion resistance Hill (2003). Adhesively bonded structural composites for Aston Martin vehicles. 3rd Annual SPE Automotive Composites Conference, Troy, MI. Cost Manufacturing Today, huge interest for introducing composite in passenger cars

5. Crashworthiness requirements Failure mechanisms within the composite material (e.g. fibre failure) Requirement: constant deceleration of the car Full scale crash test Lab scale Reliable simulation Physically based material model + Structural consideration Energy Absorption 5| Energimyndigheten, Thomas Bru | 9 Oct 2014 Light High performance Corrosion resistance Crashworthiness Grauers et al. (2014). Energy absorption and damage mechanisms in progressive crushing of corrugated NCF laminates: Fractographic analysis. Composite Structures;110:110–117. Grauers et al. (2014)

6. Physically-based material model for crash simulation Physically-based material model INPUTS  Failure mechanisms within the material  Accurate mechanical properties and behaviour of the material OUTPUTS  Energy absorption capability of the material under different loading conditions + structural design 6| Energimyndigheten, Thomas Bru | 9 Oct 2014  phenomenological approach, based on experimental observations

7. Summary Huge interest for the introducing composites into cars Car industry needs reliable simulation for crash of composites Experimental material characterisation is required for the development and validation of a material models Make vehicle lighter, safer, and more Fuel- Efficient Light High performance Corrosion resistance Crashworthiness 7| Energimyndigheten, Thomas Bru | 9 Oct 2014

8. Vi arbetar på vetenskaplig grund för att skapa industrinytta. www.swerea.se 8| Energimyndigheten, Thomas Bru | 9 Oct 2014