ULTRASONIC INSPECTION DEVICE

The invention provides an ultrasonic inspection device which can be applied to an inspection object having a curved surface shape. An ultrasonic inspection device is provided with a transmission probe and a reception probe. The transmission probe includes: a first contact portion having a first convex cylindrical surface in linear contact with the curved surface; and a transmitting element that transmits ultrasonic waves toward the first convex cylindrical surface. The reception probe includes: a second contact portion having a second convex cylindrical surface in linear contact with the curved surface; and a receiving element that receives the ultrasonic waves incident from the second convex cylindrical surface. The transmission element is provided along a first mounting surface that is orthogonal to a first transmission-side imaginary line that passes through the first contact position and is inclined to the opposite side from the reception probe with respect to a first reference imaginary line. The receivi