Ultrasonic inspection method
First Claim
1. A method of inspecting a moving object, which comprises the steps oftransmitting an ultrasonic sound beam into the moving object and moving the sound beam in a scanning plane transversely to the axis of the sound beam, the scanning plane being defined by the moving sound beam axis and the sound beam being moved in the scanning plane at a velocity sufficient for an instantaneous B-scan display of the moving object,displaying the B-scan on a display screen in response to echo pulses produced in the scanning plane by the ultrasonic sound beam in the moving object,producing an adjustable trace line in the B-scan display at a location which corresponds to a predetermined position of the sound beam during the movement thereof in the scanning plane, andselectively displaying on the display screen a display other than the B-scan display in response to echo pulses produced when the sound beam is in the predetermined position.
1 Assignment
0 Petitions
Accused Products
Abstract
An ultrasonic sound beam is caused to penetrate an object to be inspected and is moved in a scanning plane of the object transversely to the axis of the beam. A B-scan display of the object is displayed on a display screen in response to echo pulses produced by the object under the action of the sound beam moving in the plane. An adjustable trace is defined on the display screen at a location which corresponds to a predetermined position of the sound beam during the movement thereof in the plane. A display other than the B-scan display is derived from echo pulses produced by said object under the action of said sound beam when the same is in said predetermined position.
16 Citations
16 Claims
- 1. A method of inspecting a moving object, which comprises the steps oftransmitting an ultrasonic sound beam into the moving object and moving the sound beam in a scanning plane transversely to the axis of the sound beam, the scanning plane being defined by the moving sound beam axis and the sound beam being moved in the scanning plane at a velocity sufficient for an instantaneous B-scan display of the moving object,displaying the B-scan on a display screen in response to echo pulses produced in the scanning plane by the ultrasonic sound beam in the moving object,producing an adjustable trace line in the B-scan display at a location which corresponds to a predetermined position of the sound beam during the movement thereof in the scanning plane, andselectively displaying on the display screen a display other than the B-scan display in response to echo pulses produced when the sound beam is in the predetermined position.
- 8. An apparatus for inspecting a moving object, which comprisesan ultrasonic sound transducer for emitting an ultrasonic sound beam and transmitting the sound beam into the moving object,
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9. scanning means for moving the sound beam in a scanning plane transversely to the axis of the sound beam, the scanning plane being defined by the moving sound beam axis and the scanning means being arranged to move the sound beam in the scanning plane at a velocity sufficient for an instantaneous B-scan display of the moving object,a display screen operatively connected to the scanning means for displaying the B-scan in response to echo pulses produced in the scanning plane by the ultrasonic sound beam in the moving object,means for producing a trace line in the B-scan display and for adjusting the location of the trace line to one which corresponds to a predetermined position of the sound beam during the movement thereof in the scanning plane,a control for selectively displaying on the display screen a display other than the B-scan display in response to echo pulses produced when the sound beam is in the predetermined position, anda preselector switching means settable to switch from the B-scan to the other display when the direction of the trace line in the B-scan display corresponds to that of the sound beam in the moving object.
Specification