sistema para inspeção de trilhos com dispositivos ultrassônicos phased array

um sistema para inspecionar trilhos ferroviários (10) usando a tecnologia ultrassônica "phased array" que mede o tempo de voo de sinais ultrassônicos (80-85) em localizações através do boleto do trilho para determinar o perfil de desgaste do trilho (10). o perfil de desgaste do trilho é, então, usado para ajustar as leis focais das sondas ultrassônicas "phased array" (30-36) para compensar dinamicamente as alterações no perfil do trilho à medida que o veículo de inspeção (12) se move ao longo dos trilhos (10). A system for inspecting railroad rail using phased array ultrasonic technology includes both high-speed and high-resolution inspection modes that obviate the need for an operator to dismount the truck to perform detail inspection. In high-speed inspection mode, the phased array probes operate at fixed angles with respect to the rail to identify potential rail defects as the vehicle moves along the track. The vehicle can then return to the location of a potential rail defect and switch to a high-resolution inspection mode in which the phased array probes sweep over a range of beam angles at the location of a potential rail defect.