Rontgen Technische Dienst B.v.

Technische Universiteit Delft

Niels Pörtzgen

Frederik Hendrik Dijkstra

Andries Gisolf

Khalid Chougrani

Cezar Justino Buque

A transducer for generating acoustic waves more particularly for generating compression waves, comprising an array of transmitter elements and an array of receiver elements, at least one wedge for the array of transmitter elements and the array of receiver elements and preferably an acoustical barrier separating the array of transmitter elements and the array of receiver elements. The pitch of the transmitter array varies along the length of the transmitter array.

Technique and phased array transducer for ultrasonic inspection of coarse grained, anisotropic welds

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.

Method and apparatus for examining the interior material of an object, such as a pipeline or a human body from a surface of the object using ultrasound

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Vlaardingen, Netherlands

Niels Pörtzgen