Engineering
Thermomechanical Analysis of a Brake Disc Under Repeated High-Energy Stops
Quick fact
A single high-energy stop can heat a brake disc's surface by hundreds of degrees Celsius in under a second, but the interior stays much cooler. That harsh temperature gradient creates stresses strong enough to crack the disc, even though the mechanical braking forces alone wouldn't come close.
Why this is interesting
Every time you brake hard, your brake disc glows red-hot and then cools down in seconds—how does this repeated thermal beating cause it to crack and fail?