Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 27, 2023 - September 29, 2023
The purpose of this study is to estimate the surface condition of road material, such as dry, wet, ice and snow, by using the ultrasonic system on the moving vehicle. As a first step, five kinds of road material were used as the specimen for examination and verification of the possibility of estimation by the ultrasonic measurement with moving system. The airborne ultrasonic wave (the central frequency of 40 kHz) which reflects at the interface of air and material surface by the difference of surface condition is received by the ultrasonic transducer and recorded to the oscilloscope. The roughness of road material is also measured as surface profile by laser displacement sensor. The maximum amplitude of reflected ultrasonic wave from each specimen were evaluated quantitatively by the roughness of road surface. The ultrasonic method is effective for the estimation of the road material with different surface condition.
