Nishikawa, Y. Primary Author mixed material bibliography Taylor & Francis 2012 id Indonesia

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A system to detect damages at expansion joints of highways has been developed. It has been observed during highway inspection works, that an experienced inspector is able to identify damaged joints while performing routine patrol by hearing the sound released by the joint when the patrol car passes through it. Based on this fact, trials were made to model the abilities of the experienced inspector through the development of an expert system. Acoustic measurements of sounds released by expansion joints through equipment mounted inside and outside of a vehicle travelling over the joints were carried out. From the measurement results it was found that the signals have some characteristics frequency bands. These bands were analyzed through different methods, such as partial overall, partial overall product and 1/3 octave band. The obtained results provided means to start the development of a detection system. JOINTS 656.1 Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 0000020751 My Library 20028 machine generated