Abstract:
A method for the nondestructive testing of a test object by ultrasound, the method including generating a pulsed ultrasonic field in the test object by means of an array of individually drivable ultrasonic transmitting transducers acoustically coupled to the test object, by the ultrasonic transmitting transducers each being driven with a specific analog transient excitation signal, wherein each analog transient excitation signal is generated based on an ultrasonic transmitting transducer-specific stored digital transient excitation function, receiving resulting echo signals from the test object by means of an array of individually drivable ultrasonic receiving transducers, with each ultrasonic receiving transducer providing an analog time-resolved echo signal, temporarily storing the time-resolved, transducer-specific, digitized echo signals in the form of an echo signal set, and applying a plurality of different reception processing rules to the echo signal set.
Abstract:
The invention relates to a method and device for the near-surface, non-destructive inspection by means of ultrasound of a rotationally symmetric workpiece (1) having a diameter that changes from section to section. The method and device are based on the insonification of an ultrasonic test pulse into the workpiece (1) at a defined insonification angle Theta and the subsequent recording of an ultrasonic echo signal from the workpiece (1). Echo signals that trace back to a near-surface region ROI of the workpiece are identified and evaluated. Then, a graphic representation of the surface of the workpiece is generated.
Abstract:
A method for forming a wear sole includes forming a plurality of layers from a frame material, adjacent layers bonded to one another to define a frame. The frame can include a proximal surface configured to secure the frame to a probe holder, a distal surface configured to contact a portion of a target, a body extending between proximal and distal surfaces, an aperture extending through proximal and distal surfaces and the body, and a channel extending from the proximal surface to a chamber in fluid communication with the distal surface. The method can optionally include placing a membrane within the aperture. The membrane can be coupled to the body by a seal, inhibiting passage of a fluid through the proximal surface via the aperture. The chamber can extend within the body between a distal surface of the membrane and the distal surface of the frame.
Abstract:
The invention relates to a method for the non-destructive testing of the volume of a test object, during the course of which a volume raw image 100 of the test object is recorded by means of a suitable non-destructive imaging testing method. Then, those regions of the volume raw image are identified that are not to be attributed to the test object material. It is checked whether an identified region is completely embedded in regions that are to be associated with the test object material. If necessary, such a region is assimilated to those regions that are to be associated with the test object material, forming a filled volume raw image. Finally, a difference 103 is generated between the volume raw image and the filled volume raw image, forming a first flaw image 104. A further subject matter of the invention is a testing device configured for carrying out the method.
Abstract:
A wear base for attachment to a US test probe is proposed, wherein the US test probe is provided for the ultrasonic inspection of bar stock and wherein the US test probe comprises a fluid chamber which, in the operational state of the US test probe, is filled with a coupling fluid or through which this coupling fluid flows, wherein the wear base is provided for attachment to the fluid chamber as well as for a mechanical contact with the bar stock to be inspected, and comprises a base block, wherein the base block forms at least one contact surface for a mechanical contact with the bar stock to be inspected, the contact surface having a curved portion, wherein at least one passage opening for the coupling fluid is disposed in the contact surface, wherein the wear base comprises at least one spring member for the adaptive matching of a radius of curvature of the curved portion of the contact surface of the base block to a radius of the bar stock to be inspected.
Abstract:
Eine Mikrofokus-Röntgenröhre (11) für eine hochauflösende Röntgenvorrichtung umfasst ein Gehäuse (34), eine Elektronenstrahlquelle (15) zur Erzeugung eines Elektronenstrahls (14) und eine Fokussierlinse (22) zur Fokussierung des Elektronenstrahls (24) auf ein Target (23). Die Röntgenröhre (11) weist eine im Wesentlichen rotationssymmetrische, ringförmige Kühlkammer (30) auf, die zur Durchströmung mit einem flüssigen Kühlmedium eingerichtet ist.
Abstract:
The invention relates to a feeding device for an ultrasound inspection system, with means for transporting a test object (7), in particular a pipe, into an ultrasound inspection chamber of the ultrasound inspection system, comprising at least one guiding unit (1) for the test object with at least one, preferably three, still more preferably six elastically biased counter bearings (2) resting against a jacket surface (8) of the test object (7) via a contact part (4) in order to guide the test object during transport.
Abstract:
Vorrichtung zur Materialprüfung von Prüfobjekten (15) mittels Röntgenstrahlung, umfassend eine Röntgenvorrichtung (20), die eine Röntgenquelle (12) zum Durchstrahlen eines in einer Prüfposition gehaltenen Prüfobjekts (15) und einen als Zeilendetektor ausgebildeten Röntgendetektor (13) aufweist, und eine elektronische Steuereinrichtung (38), die zur Steuerung der Röntgenvorrichtung (20) eingerichtet ist, wobei während der Röntgenprüfung das Prüfobjekt (15) und die Röntgenvorrichtung (20) relativ zueinander lediglich um eine im Wesentlichen vertikale Rotationsachse R rotierbar sind, dadurch gekennzeichnet, dass der Röntgendetektor (13) mindestens zwei Detektionsabschnitte (13A, 13B,...) aufweist, die jeweils zur Erfassung des Prüfobjekts über einen vollständigen Radialquerschnitt (52A, 52B,...) eingerichtet sind.
Abstract:
Die Erfindung betrifft ein Verfahren zur zerstörungsfreien Ultraschalluntersuchung wobei wenigsten ein Ultraschallimpuls mittels wenigstens eines Ultraschallsenders (3) in ein zu untersuchendes Werkstück abgestrahlt wird und der Ultraschallimpuls an Grenzflächen im Werkstück reflektiert wird, der reflektierte Ultraschall mittels wenigstens eines Ultraschallempfängers (2) empfangen wird und die zugehörigen Signale ausgewertet werden und der Ultraschall dabei einen, zwischen dem Werkstück und dem Sender beziehungsweise Empfänger angeordneten Vorlaufkörper (4) durchdringt. Das Verfahren zeichnet sich dadurch aus, dass es wenigstens einen Schritt zur Bestimmung der Schallgeschwindigkeit im Vorlaufkörper (4) mittels eines Gruppenstrahlers (1) aus selektiv ansteuerbaren Wandlern umfasst, bei dem jeweils wenigstens ein erster Wandler (3) des Gruppenstrahlers (1) als Sender wenigstens eines Ultraschallimpulses und wenigstens ein zweiter Wandler (2) des Gruppenstrahlers (1) als Empfänger des Ultraschallimpulses fungieren und die Schallgeschwindigkeit im Vorlaufkörper (4) wenigstens durch Laufzeitmessung des Ultraschalls entlang der kürzesten Schallstrecke (e1, e2) des Ultraschalls zwischen den betreffenden, beabstandeten Wandlern (2, 3) ermittelt wird.
Abstract:
The invention relates to a method for the non-destructive ultrasonic testing of a test piece (3) with flat surfaces (5) at an angle to each other by means of several selectively activatable ultrasonic transducers (2, 2’, 2″), whereby the method comprises several test cycles, with which certain (2,2″) of the several ultrasonic transducers (2, 2’,2″) are selected and activated, in order to emit at least one ultrasonic pulse (7, 7″) to the test piece, and with which the ultrasonic pulse reflected in the test piece (3) is received by the selected and/or, if necessary, other ultrasonic transducers (2, 2’, 2″). The method according to the present invention is characterized in that in the respective test cycle, the determined ultrasonic transducers (2, 2″) are so selected and activated, that the main propagation direction (6, 6″) of the ultrasonic pulse (7, 7″) produced by the selected and activated ultrasonic transducers (2, 2″) is perpendicular to at least one of the angled surfaces (5) of the test piece (3). The invention also relates to an associated device and ultilization.