Ultrasonic testing probe and ultrasonic testing apparatus

Abstract

Provided are an ultrasonic testing probe and an ultrasonic testing apparatus capable of reducing the time required for flaw detection while maintaining the flaw-detection capability, irrespective of the shape of the inner surface of a tested object. A first probe () and a second probe () are provided, in each of which a plurality of oscillators that transmit ultrasonic waves to a tested object (T) and detect the ultrasonic waves reflected from the tested object (T) are arrayed. The first probe () is disposed closer to a flaw in the tested object (T) than the second probe () is. The first probe () generates longitudinal ultrasonic waves that propagate on an inner surface (T) of the tested object (T) opposite to an outer surface (T) thereof where the first probe () and the second probe () are disposed and transverse ultrasonic waves that propagate from the outer surface (T) toward an inside of the tested object (T). The second probe () generates longitudinal ultrasonic waves that propagate on the outer surface (T) and longitudinal ultrasonic waves that propagate from the outer surface (T) toward the inside of the tested object (T).