Could a centrifuge produce time dilation effects?
Any mechanical engineer will tell you, the maximum rim speed of a flywheel is proportional to sqrt(tensile strength รท density) of the material. Typical flywheels have maximum rim speeds less than 1000 meter/sec. A flywheel made of kevlar has a maximum rim speed would around 1400 meter/sec. Eventually, we might make a flywheel out of carbon nanotubes and achieve rims speeds 3000 to 5000 meter/sec. That is still only 1/100,000th of the speed of light, so the time dilation would be on the order of 0.000,000,000,1.
