Similar to an aging toothbrush's colour-changing bristles, the Fraunhofer Institute for Mechanics of Materials IWM has created remarkable new safety feature for cyclists.

Similar to an aging toothbrush's colour-changing bristles, the Fraunhofer Institute for Mechanics of Materials IWM has created a bicycle helmet which omits a bad smell to alert users to structural damage.  Developed alongside the Fraunhofer Institute for Environmental, Safety and Energy Technology (UMSICHT), the helmet contains polymer materials constructed with micro-capsules of odoriferous oils which burst when damaged.

With the smallest crack significantly weakening a helmet's structural integrity this technology could increase bike safety and reduce unnecessary waste of undamaged helmets.

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