A METHOD FOR INSPECTING AN OBJECT BY MEANS OF ULTRASOUND

摘要

A method for inspecting an object by means of ultrasound, for example for detecting a wall thickness of the object or for detecting defects in the object, wherein in a step a. at least one ultrasonic pulse is transmitted into the object on a first position of a surface of the object, the ultrasonic pulse is received on a second position of the surface of the object possibly by propagating directly towards the second position along the surface of the object or possibly as a result of reflection and/or diffractions of the pulse in the object so that the transmitted pulse may result in more than one pulse being received at different moments in time and wherein a data signal is generated representing the received pulses and the associated moments in time wherein these pulses are received wherein step a. is repeated for other first positions and/or second positions for generating a first set of data signals and wherein the first set of data signals obtained in the plurality of steps a. are processed for generating processed signals on the basis of which a To FD image can be obtained, wherein the processing for obtaining the processed data signals comprises at least three processing steps.