Crack measurement device and method
AssigneePosco
InventorsSang-Woo CHOI, Jae-Suk HONG, Kwan-Tae KIM, Nam-Ho SHIN, Tae-Hwa CHOI
Life of this patent
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Abstract
According to an exemplary embodiment in the present disclosure, a crack measurement device and a crack measurement method are provided. The crack measurement device according to an exemplary embodiment in the present disclosure includes: an ultrasonic sensor irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected and receiving a reflected wave, reflected from the bottom surface of the object to be inspected; and a monitoring unit providing information on a crack on the basis of intensity of the reflected wave.
Claims17
A crack measurement device comprising:
- an ultrasonic sensor irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected, receiving a reflected wave of the first ultrasonic wave reflected from the bottom surface of the object to be inspected, transmitting a second ultrasonic wave in a direction forming an acute angle with respect to the bottom surface of the object to be inspected, so as to be diffused toward the bottom surface of the object to be inspected, and receiving a diffracted wave of the second ultrasonic wave diffracted by a crack;
- and
- a monitoring unit extracting and providing information on whether or not the crack exists and a position of the crack on the basis of intensity of the reflected wave and extracting and providing information on a height of the crack using a time at which the diffracted wave is received.
A crack measurement device comprising:
- an ultrasonic sensor irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected, and receiving a reflected wave of the first ultrasonic wave reflected from the bottom surface of the object to be inspected and a diffracted wave of the first ultrasonic wave diffracted by a crack;
- and
- a monitoring unit extracting and providing information on whether or not the crack exists and a position of the crack on the basis of intensity of the reflected wave and extracting and providing information on a height of the crack using a time at which the diffracted wave is received.
A crack measurement method comprising:
- irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected;
- receiving a reflected wave of the first ultrasonic wave reflected from the bottom surface of the object to be inspected;
- irradiating a second ultrasonic wave in a direction forming an acute angle with respect to the bottom surface of the object to be inspected, so as to be diffused toward the bottom surface of the object to be inspected;
- receiving a diffracted wave of the second ultrasonic wave diffracted by a crack;
- and
- extracting and providing information on a height of the crack using a time at which the diffracted wave is received.
(canceled).
Dependencies are inferred from the claim text.