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

Abstract: 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.

Abstract: A method for examining the interior material of an object, such as a pipeline or a human body, from a surface of an object using ultrasound having a frequency of at least 100 KHz, wherein the ultrasound is supplied to the interior material of the object. The reflections and/or diffractions of the ultrasound from the interior material of the object are received using ultrasonic receivers which are acoustically coupled to the surface of the object at positions which are distributed in two dimensions of the surface of the object, at different points in time or not, wherein, with each of the feelers, a receiving signal is generated, wherein the receiving signals are processed in combination in order to determine, according to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur.

Abstract: A method for examining the interior material of an object, such as a pipeline or a human body, from a surface of an object using ultrasound having a frequency of at least 100 KHz, wherein the ultrasound is supplied to the interior material of the object. The reflections and/or diffractions of the ultrasound from the interior material of the object are received using ultrasonic receivers which are acoustically coupled to the surface of the object at positions which are distributed in two dimensions of the surface of the object, at different points in time or not, wherein, with each of the feelers, a receiving signal is generated, wherein the receiving signals are processed in combination in order to determine, according to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur.