Transducer and curved component may interfere during automatic ultrasonic inspection.Using the characteristics of collision interference between cylindrical transducers and curved components

a hierarchy method of collision interference detection was proposed. Firstly

algorithms of bounding box and geometric intersection were used to remove most cases where components were separated. Then triaxial components which may collide were projected onto diaxial plane. Finally

collision interferes were accurately identified according to orthographic projections overlap or not. The engineer application results showed that the method can meet the efficiency and accuracy requirements of the ultrasonic inspection. It can also be applied to the cases of assembly and NC machining

where needs rapid collision detection between cylinder and complex curved components.