Ultrasonic flaw detector
First Claim
1. An ultrasonic flaw detector comprising:
- an ultrasonic probe for radiating an ultrasonic flaw-detecting signal onto each flaw detection point within a flaw detection area which is specified on a surface of a target, and receiving an ultrasonic wave reflected from the detection point;
distance sensor means for radiating a distance measuring signal onto a measuring point within a position storing area including the flaw detection area to detect a distance between the measuring point and said distance means;
coupling means for integrally coupling said distance sensor means and said ultrasonic probe in such a manner that said distance sensor means scans a preceding scanning line;
position and orientation control means for controlling position and orientation of said ultrasonic probe and said distance sensor means;
shape information calculation means for calculating information on the shape of the position storing area including the flaw detection area on the basis of a detection result of said distance sensor means and a current position of said distance sensor means;
storing means for storing the shape information;
position and orientation calculation means for calculating position and orientation of said ultrasonic probe on the basis of the shape information stored in said storing means to thereby radiate the flaw detecting signal onto the measuring point at predetermined angle and distance from said ultrasonic probe; and
control means for performing a shape-measurement scanning operation of said distance sensor means and a flaw-detection scanning operation of said ultrasonic probe in parallel with each other.
1 Assignment
0 Petitions
Accused Products
Abstract
The distance sensor means and the ultrasonic probe are integrally coupled to each other in such a manner that a preceding scanning line to a current scanning line which is scanned by the ultrasonic probe is scanned by the distance sensor means, and the shape-measurement scanning operation of the distance sensor means and the flaw-detection scanning operation of the ultrasonic probe are performed in parallel with each other. A flaw detection area is divided into plural sub-areas, and plural storing areas are arranged in a mesh form in one-to-one correspondence to the sub-areas, only one shape information of position storing area including the flaw detection area being stored in each of the storing areas. The position and orientation of the ultrasonic probe at each flaw detection point is controlled using the stored shape information.
-
Citations
14 Claims
-
1. An ultrasonic flaw detector comprising:
-
an ultrasonic probe for radiating an ultrasonic flaw-detecting signal onto each flaw detection point within a flaw detection area which is specified on a surface of a target, and receiving an ultrasonic wave reflected from the detection point; distance sensor means for radiating a distance measuring signal onto a measuring point within a position storing area including the flaw detection area to detect a distance between the measuring point and said distance means; coupling means for integrally coupling said distance sensor means and said ultrasonic probe in such a manner that said distance sensor means scans a preceding scanning line; position and orientation control means for controlling position and orientation of said ultrasonic probe and said distance sensor means; shape information calculation means for calculating information on the shape of the position storing area including the flaw detection area on the basis of a detection result of said distance sensor means and a current position of said distance sensor means; storing means for storing the shape information; position and orientation calculation means for calculating position and orientation of said ultrasonic probe on the basis of the shape information stored in said storing means to thereby radiate the flaw detecting signal onto the measuring point at predetermined angle and distance from said ultrasonic probe; and control means for performing a shape-measurement scanning operation of said distance sensor means and a flaw-detection scanning operation of said ultrasonic probe in parallel with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13)
-
-
10. An ultrasonic flaw detector comprising:
-
an ultrasonic probe for radiating an ultrasonic flaw-detecting signal onto each flaw detection point within a flaw detection area which is specified on a surface of a target, and receiving an ultrasonic wave reflected from the detection point; distance sensor means for radiating a distance measuring signal onto a measuring point within a position storing area including the flaw detection area to detect a distance between the measuring point and said distance means; coupling means for integrally coupling said distance sensor means and said ultrasonic probe in such a manner that said distance sensor means scans a scanning line which precedes to a scanning line scanned by said ultrasonic probe; position and orientation control means having plural axis-driving means for controlling position and orientation of said ultrasonic probe and said distance sensor means through control of said axis-driving means; shape information calculation means for calculating information on the shape of the position storing area including the flaw detection area on the basis of a detection result of said distance sensor means and a current position of said distance sensor means; storing means for storing the shape information; position and orientation calculation means for calculating position and orientation of said ultrasonic probe on the basis of the shape information stored in said storing means to thereby radiate the flaw detecting signal onto the measuring, point at predetermined angle and distance from said ultrasonic probe; control means for performing a shape-measurement scanning operation of said distance sensor means and a flaw-detection scanning operation of said ultrasonic probe in parallel with each other; axis-position detecting means for detecting current positions of respective axes; axis-position instructing value calculating means for calculating axis-position instructing values for each flaw detection point of said ultrasonic probe on the basis of the current positions detected by said axis-position detecting means and the shape information which is beforehand obtained; axis-position instructing value averaging means for calculating an averaged value of axis-position instructing values of plural flaw-detection points including a flaw-detection point to be concerned on the-basis of the respective axis-position instructing values of each flaw detection point which are calculated by said calculation means to thereby specify an axis-position instructing value for the flaw-detection point to the averaged value; axis-speed instructing value calculating means for calculating an axis-speed instructing value for each flaw-detecting point on the basis of the axis-position instructing values for each flaw-detecting point which are calculated by said averaging means; axis-speed instructing value averaging means for calculating an averaged value of the axis-speed instructing values for plural flaw-detection points including a flaw-detection point to be concerned to thereby specify an axis-speed instructing value for the flaw-detection point to the averaged value; and axis-speed control means for calculating an axis-speed instructing value in accordance with a deviation between the averaged axis-position instructing value and the current position detected by said axis-position detecting means, and controlling a moving speed of each axis for said ultrasonic probe on the basis of a sum of the calculated axis-speed instructing value and the averaged axis-speed instructing value. - View Dependent Claims (11, 12, 14)
-
Specification