Ultrasonic Testing Sensor and Ultrasonic Testing Method

摘要

An ultrasonic testing sensor and an ultrasonic testing method are provided which achieve a high sensitivity of three-dimensional ultrasonic testing and a high S/N ratio, do not require development of a sensor for each inspection object, and reduce the cost of developing a sensor.;The ultrasonic testing method is performed with the use of the ultrasonic testing sensor while a total length d, extending in a direction parallel to an ultrasonic scanning direction, of ultrasonic elements to be simultaneously excited with a single exciter is controlled to be in a range ensuring that 2d·sin θ=n·λ, where λ is a wavelength of an ultrasonic wave, n is an integer of 1 or 2, and θ is an angle at which the ultrasonic wave is incident.

主权项

1. An ultrasonic testing sensor comprising
rectangular ultrasonic elements two-dimensionally arrayed, wherein a length of a longest side of each of the ultrasonic elements is smaller than or equal to a wavelength of an ultrasonic wave to be transmitted.