The 'Tire Pavement Test Apparatus (TPTA)' at Purdue University is a device that was originally developed to study tire's air-borne noise radiation in the frequency range 300 Hz 2 kHz. However, recent years, has mainly been used quantify contribution structure-borne by measuring force and acceleration hub. Hence, of interest shifted frequencies below Hz. By comparing measurements FE simulations,...

The tonal noise or vibration of air-cooled or water-cooled chillers with rotary twin screw compressors is crucial for environmental concerns. This work aims to perform the receiver tests regarding the radiated noise and structural vibration due to the compressor in different operating conditions. The sound pressure near the compressor is recorded by the one-third octave and narrow band frequenc...

Abstract The noise generated by the rolling tyre contributes significantly to cars interior noise. This is caused tyre-road contact, and at low frequencies (0-500 Hz) mostly transmitted inside cockpit through structure-borne transmission path. In support of studies in this research field, an interpretative model tyre-wheel system accounting for effects induced angular speed represents a useful ...

unknown noise and artifacts present in medical signals with  non-linear fuzzy filter will be estimate and then removed. an adaptive neuro-fuzzy interference system which has a nonlinear  structure presented  for the noise function prediction by before samples. this paper is about a neuro-fuzzy method to estimate unknown noise of electrocardiogram (ecg) signal. adaptive neural combined with fuzz...

changes in dynamic properties of structures indicate occurrence of damages in the structures. in this paper, a new two stage algorithm for damage detection of large structure is introduced. a modified residual force method is utilized to locate the damage regions in structures, especially barrel vaults, and then the enhanced charged system search (css) algorithm is used to quantify the amount o...

Metro systems provide an efficient, convenient, and expeditious way to travel around crowded routes. Because these are established in cities, residential buildings close metro viaducts significantly affected by structure-borne noise (SBN). Although most previous studies developed SBN prediction with a focus on the accuracy computational efficiency of specific bridge type, only limited parameter...