| 摘要 |
The invention relates to a method for the complete detection of the geometry, particularly the diameter of test objects, such as round bar steel or pipes, by means of ultrasound, wherein the lateral surface of the test object is completely scanned using at least one test head while maintaining a distance, applying water, and performing a relative motion between the test head and the test object, and wherein the diameter, and for pipes the outside diameter, and additionally the wall thickness and the inside diameter are determined for precise locations, while taking the water standoff into consideration. The complete scanning of the test object occurs via a measurement of the water standoff by means of vertical ultrasonic radiation, from which a reference diameter is calculated, and via at least one additional precise optical measurement of the diameter on at least one identical location of the test object measured, or to be measured, by means of ultrasound, a calibration or recalibration of the measurement values for the reference diameter of the ultrasound test occurs, and from this an exact diameter of each location of the test object is calculated. |
