抄録
In order to obtain resonance frequencies of bellows, a discrete pseudauto Wigner distribution is applied. In a study, vibration signals of several kinds of bellows are acquired by a vibration tester in a laboratory. Resonance frequencies of those signals are estimated from the frequency response values of Wigner distribution. In another study, for two kinds of bellows of the same size, heat treated and non-heat treated, impact vibration signals are analyzed.
