Carcass thread tension measuring method for tire of vehicle, involves receiving acoustic or vibration response signals, evaluating acoustic or vibration response signals, and evaluating tension based on curve path of response signal

摘要

The method involves lifting a vehicle tire to a vehicle rim, and pressurizing the vehicle tire with usual tire internal pressure. The vehicle tire is mechanically excited using an excitation unit. Acoustic or vibration response signals of mechanical excitation are received by a sensor. The acoustic or vibration response signals are evaluated. Tension of a carcass thread is evaluated based on a curve path of the response signal. A frequency of a vertical mode (1) of the response signal is stored during evaluation of the tension of the carcass thread.