EP2828009A1 - Ultrasound probe - Google Patents

Ultrasound probe

Info

Publication number
EP2828009A1
EP2828009A1 EP20130715151 EP13715151A EP2828009A1 EP 2828009 A1 EP2828009 A1 EP 2828009A1 EP 20130715151 EP20130715151 EP 20130715151 EP 13715151 A EP13715151 A EP 13715151A EP 2828009 A1 EP2828009 A1 EP 2828009A1
Authority
EP
Grant status
Application
Patent type
Prior art keywords
4i
transducer elements
test head
transducer
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20130715151
Other languages
German (de)
French (fr)
Inventor
Günter ENGL
Rainer Meier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intelligendt Sys & Serv GmbH
Intelligendt Systems and Services GmbH
Original Assignee
INTELLIGENDT SYS & SERV GMBH
Intelligendt Systems and Services GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18Methods or devices for transmitting, conducting, or directing sound
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezo-electric effect or with electrostriction
    • B06B1/0607Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezo-electric effect or with electrostriction using multiple elements
    • B06B1/0622Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezo-electric effect or with electrostriction using multiple elements on one surface
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/221Arrangements for directing or focusing the acoustical waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/24Probes
    • G01N29/2456Focusing probes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/26Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/262Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18Methods or devices for transmitting, conducting, or directing sound
    • G10K11/26Sound-focusing or directing, e.g. scanning
    • G10K11/34Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering

Abstract

The invention relates to an ultrasound probe that contains an ultrasound transducer arrangement (2) comprising a plurality of transducer elements (4i) which are arranged next to one another in a row, which can be controlled with a time delay, and the transmitting/receiving surfaces (6i) of which are inclined relative to one another such that the angle of inclination (αi, j) between the transmitting/receiving surfaces (6i, 6j) of two transducer elements (4i, 4j) increases with the number of transducer elements (4i) located between said transducer elements (4i, 4j), and at least two of the incremental angles of inclination (αi, i+1) between each pair of adjacent transducer elements (4i, 4i+1) are different.

Description

description

Ultrasonic test head

The invention relates to an ultrasonic test head includes an ultrasonic transducer assembly of juxtaposed a plurality in a row, with a time delay addressable transducer elements.

In such, also referred to as an array or phased array ultrasonic transducer array, the transducer elements may be delayed by controlling both the

Beam angle are ver ¬ changes to a device under test and the depth of focus. This makes it possible to acquire larger areas of the test object at rest ultrasonic probe. Usually it is in these

Ultrasonic transducer assemblies for so-called line arrays in which a conventional piezoceramic transducers is divided into small acoustically separated transducer elements, wherein the dividing cutting direction transverse to the

Einschallebene lies in an angular swing to take place. To achieve a homogeneous sound beam and a large angular range, the transducer elements obtained by the division may not exceed a dimension in the order of the wavelength in the Einschallebene. Most applications require to achieve a high resolution and a high signal / noise ratio of the generation of a sound beam with a sufficiently small divergence, for which greater dimensions of the entire ultrasonic transducer arrangement are needed. This means a large number of individual transducer elements, typically sixteen or more that are simultaneously or with a time delay controlled together. This large number of transducer elements requires a corresponding number of connecting cables, connectors, and particularly in the internal inspection of hollowed-waves, which are sampled with a helical movement of the test head, a corresponding number of slip ring contacts and a corresponding number of electronic channels in the tester, so that the technical effort is considerable.

The invention is therefore based on the object of specifying a Ultra ¬ schallprüfkopf with an ultrasonic transducer array having a plurality of side by side in a row, with a time delay addressable transducer elements to which it is possible at reduced technical effort to cover a large pivoting range in a workpiece at a high spatial resolution ,

Said object is according to the invention solved with an ultrasonic test head with the features of claim 1. According to these features, the ultrasonic test head includes an ultrasonic transducer array having a plurality of in a row side by side, with a time delay actuatable transducer elements whose transmitting / receiving surfaces such are arranged inclined to one another that the angle of inclination between the transmitting / receiving surface of two transducer elements with at ¬ number of the transducer elements located between these increases. Furthermore, the transducer elements arranged so that min ¬ least two of the incremental tilt angle between adjacent transducer elements are different from each other. In other words, the transmitting / receiving surfaces of adjacent transducer elements are not in one plane, for example on the slanting surface of a common wedge, but for example on facets, wherein adjacent facets are each inclined at a predetermined angle to each other. The predetermined angle can be freely selected and adapted to the respective application or the component to be Che ¬ Fende. This results in Example ¬ as ultrasonic arrangement in which the facets or arranged thereon transducer elements are not arranged along a circular ¬ bow, but along a direction deviating from a circular arc curved shape or on a formed in such a shape leading body. For example, the incremental tilt angle may be staggered is that they are moving from the edge of the ultrasonic transducer array or decreases. This can be achieved compared to a circular geometry ei ¬ ne lower overall height of the ultrasonic test head ¬ to. Under incremental tilt angle, the difference in inclination angle between adjacent transducer elements is to be understood. In other words, the incremental tilt angle is the angle at which each adjacent

Transducer elements are inclined towards each other and the angle that the transmitting-receiving surfaces of the respective adjacent

include transducer elements between them. At least two incremental angle of inclination of adjacent

Transducer elements according to the invention from one another various ¬ or different size. In other words,

incremental tilt angles are not all the same size. The individual sizes of the incremental angles of inclination that in particular an angle is recessed, in which a longitudinal wave in the workpiece would propagate parallel to the surface (first critical angle) so selected.

This difference in angular position of the transmitting / receiving surfaces of the transducer elements to a common coupling face, it is possible, compared to a

Ultrasonic transducer assembly according to prior art to detect rich with a smaller number of transducer elements, for example, about five to eight transducer elements, the same Schwenkwinkelbe-. Since the width of a single transducer element at the same total width of the ultrasonic transducer order is significantly larger at such a smaller number of transducer elements, preferably greater than 1.5 times the waves ¬ length of Ultraschallsig- generated by a transducer element Nals, than with a conventional linear

Ultrasonic transducer assembly already arises at a joint driving of at least two adjacent

Conversion elements, a sufficiently narrow acoustic beam with egg ¬ nem correspondingly high signal-to-noise ratio. By time-delayed activation of adjacent transducer elements Darue ¬ over another swing of the irradiation angle can also be achieved out. This pivoting range is indeed characterized physically restricted that only a few, preferably two to three converter elements are driven as a group. By means of the progressive combination of two or three

Transducer elements can be coated with their pre-stamped by the respective inclination, ie without time-delayed triggering resulting different angles of incidence, supplemented by the pivot angle range within the respective combination of these converter elements, a total pivot angle range, comparable to that of a conventional linear phased array with many narrow transducer elements in a plane is. Thus, the technical ¬ cal effort for wiring the Ultraschallprüfköpfes is significantly reduced. This is particularly advantageous in the internal inspection of shafts with a longitudinal bore, the rotational movement of the linear ultrasound transducer array about the longitudinal axis of the shaft and accordingly the number of channels requires corresponding number of slip rings.

A further possibility of the ultrasonic probe according to the invention also consists in that, for control of three or more transducer elements by respective time delays, the depth of focus, ie the distance between the focus and the surface of the specimen can be changed. Alternatively to the common time-delayed triggering of two adjacent transducer elements, it is equally possible to

to pivot angle of incidence of the ultrasonic signal in a workpiece by delayed common actuation of at least two not directly adjacent transducer elements. With egg ner such control particular mistake not reflect back the example in irradiation direction can be detected. It is particularly advantageous to design the control so that a transducer element or a

Transducer element group in the transmit mode and another

Transducer element or another transducer element group in the Emp ¬ catcher operation is operated.

Moreover, the light emitted from a single transducer element ultrasound on a sufficiently large opening angle of the sound beam, which is required for reconstructing example ¬ as called SAFT method for the analysis of incorrect Stel ¬ len or advantageous. In an advantageous embodiment of the ultrasonic probe, the transducer elements are arranged on the tooth flanks of a saw-tooth shaped flow body. The individual tooth flanks are being ¬ is at a different angle relative to the coupling face of the ultrasonic test head. In other words, the individual tooth flanks of the existing example, of plastic flow body are each ¬ weils according to the angle which the respective

Transducer element opposite to the common coupling face aufwei ¬ sen to, configured. So the probe tip itself has been the arrangement for the individual transducer elements pas ¬ sending shape and the transducer elements can then be applied with little effort on the individual tooth flanks.

Further, it is advantageous if the individual transducer elements are arranged on a leading body such that a respectively resulting between the transmitting / receiving surface of the transducer elements and the coupling surface of the flow body Vorlaufstre ¬ blocks for all transducer elements is the same. The Prüfempfind- friendliness is the same for each transducer element in this case. In other words, the individual transducer elements are arranged in egg ¬ nem such a distance from the coupling surface that the flow path is of equal length for each transducer element. Here, the length is the ver were passing through the center of the respective transmission-receiving surface of a transducer element and perpendicular to it, normal to the coupling surface ¬ delay line.

Likewise, it may be advantageous if the distance from the middle point ¬ the transmitting / receiving surface is held perpendicular to the coupling surface constant. In other words, the transducer elements are arranged on the leading body that extends between the center of the transmitting / receiving surface of the

Transducer elements and perpendicular to the coupling surface of the body preprocessing run resultant distance for all transducer elements is the same. This facilitates algorithms for calculating the time delay in the control of the individual

Transducer elements considerably. In such a sawtooth arrangement, the incremental angle of inclination may for example also be staggered so that it decreases starting from the edge of the ultrasound transducer assembly to or. This ultrasonic transducer arrangement leads to an even lower overall height and has the advantage that the otherwise resulting in an ultrasonic test head disturbing Wiederho ¬ development echoes are largely minimized.

The individual tooth flanks can eg be different widths or different lengths both regularly and irregularly. Characterized differently sized and differently shaped transducer elements may be used where ¬ further varied by the sound field produced by these who can ¬. Advantageous embodiments of the invention are specified in the subclaims.

To further explain the invention reference is made to the example shown in the figures embodiment. Shown are: a first embodiment of Ultraschallprüfköpf according to the invention in a schematic principle view in a longitudinal section;

Fig. 2, the arranged of two adjacent

Transducer elements each emitted acoustic beam so ¬ as the sound beam generated by superimposing also in a schematic diagram illustrating a second embodiment of Ultraschallprüf head according to the invention in a schematic principle view in a longitudinal section;

Fig. 4 is a time-delayed triggering of a

Ultrasonic transducer assembly according to the invention.

Referring to FIG. 1, the ultrasonic test head in accordance comprises a housing 1 in which an ultrasound transducer array 2 is arranged, which arranged a plurality of side by side in a row, with a time delay drivable piezoceramic transducer elements 4i, Figs. 1, five transducer elements 4i to 4 5, comprising. The transducer elements 4i are juxtaposed such that the transmitting / receiving surfaces 6 ±, 6y respectively adjacent

So transducer elements 4i, 4i + are oriented at an incremental tilt angle o (i, i + i inclined to each other i, the neighboring not al ¬ le transducer elements 4i, 4i + i is equal. The transducer elements 4i are not along an arc but rather arranged along a direction deviating from a circular arc curved line. In FIG. 1, all the incremental angles of inclination are ι, ι + ι different from each other, so 0 (i, i + i οίι Φ oi, + i for all i ^ j or, 2 Φ "Φ 2.3" 3.4 Φ 0 (4.5. the incremental tilt angle ι, ι + ι can thereby be staggered example, however, led, so that, starting from the edge

Ultrasonic transducer assembly 2 increases or decreases. Accordingly, the angle of inclination takes j i, a transducer element located at the end of the row between 4i and another

Transducer element 4 of the row j with the number j - 2 of the transducer elements located between these to. In other words, the transmitting / receiving surfaces 6 ± are arranged mutually inclined such that the inclination angle of ±, j increases between the transmitting / receiving area 6 ± two transducer elements 4i, 4j with the number of transducer elements located therebetween. Typical incremental tilt angle ι, ι + ι wherein emanating from a Boh ¬ tion inspection of steel shafts are, for example, in a range between 1.5 ° and 10 °. In the internal inspection of a hollow shaft, for example, has an ultrasonic transducer arrangement with incremental angles of inclination 0 (i, 2 = 3.2 °, 3.4 ° oi2,3 =, oi3,4 = 4.8 ° and 4, 5 = 2.5 ° proven.

Another possibility would be an ultrasonic transducer arrangement, the incremental tilt angle not deviate from each other, eg ι, 2 = 3.2 °, 0 (2.3 = 3.4 °, 0 (3,4 = 4.8 ° and 4, 5 = 0 (1.2 = 3, 2 °.

The transducer elements 4i are inclined to each other such that ih ¬ re transmitting / receiving surfaces 6 ± facing each other, so that the in the cut out on the transmitting / receiving area 6 ± perpendicular to normals to the transmitting / receiving surfaces 6 ± facing space, in which the sound beam emitted by the transducer elements 4i spread. The width b of the transducer elements 4i is at least equal to 1.5 times, preferably greater than four times the wavelength of the erzeug- ten of them and introduced into the test specimen echoed ultrasonic signal. The transducer elements 4i are embedded in a sound absorbing backing 8, wherein between a coupling surface 10 of the ultrasonic test head and the transmitting / receiving surfaces 6 ± 6 j is a leading body 12 made of a plastic which ι correspondingly the incremental tilt angle, ι + ι is, for example, by a faceted wedge formed.

In FIG. 1, the central axes 14 of the

Transducer elements 4i gen each emitted acoustic beam eingetra- that intersect in a workpiece to be tested 16 in respective different points of intersection S ± when the angular position of the transducer elements 4i relative to the coupling surface 10, the width b of the transducer elements 4i and inclination angle 0 (i, i + i, and length determined by the flow volume, dependent on the position of the transducer element 4 delay line 12 and the workpiece 16 are adapted to each other. this can be achieved different depths of focus and a large depth of field to be covered. In order to drive the transducer elements 4i is a control and

Evaluating device 17 is provided, advertising pivoted with the by time-delayed, common actuation of at least two or more adjacent transducer elements 4i of the angle of incidence in the workpiece 16 in a limited angular range the can, as is indicated in Fig. 1 by the double arrow 18. Similarly, the angle of incidence can also be pivoted by time-delayed ¬ common control two not directly Benach ¬ barter transducer elements 4i, 4i +. With such control, for example, the transducer element 4i can operate as a transmitter and the transducer element 4i + as a receiver. In addition, the depth of focus can be changed in the workpiece 16 by appropriate time delay pattern also when three or more adjacent transducer elements are driven in common 4i. This is illustrated by the double arrow 19 in FIG. 1. The principle of time-delayed actuation of the transducer elements 4i is also shown in Fig. 4.

With the control and evaluation device 17, it is also possible to drive the transducer elements 4i individually and to carry out taking advantage of each emitted from the individual transducer elements wide sound beam, an evaluation of empfange- NEN echo signals with a called SAFT method.

In FIG. 2, the sound beam 20 ±, 20i + i of two juxtaposed transducer elements 4i, 4i + i ¬ be characterized by solid lines or broken lines without refraction at an interface are. The figure illustrates, as indicated by simultaneous superposition of these two sound beam 20 ±, 20i + i a narrow ¬ res sound beam 20i, i + i, whose focus Fi, i + i is narrower than the foci Fi, Fi + i of the acoustic beam 20 ±, 20i + i, and further 4i + i away from the transducer elements 4i.

Fig. 3 shows a second embodiment of an ultrasonic probe according to the invention with a

Ultrasonic transducer assembly 2, the transducer elements 4i, 4i to six transducer elements are 4ε, arranged in a row side by side on the tooth flanks 22 of a sawtooth-shaped flow body 12 here.

The individual transducer elements 4i are shown in FIG. 3 perpendicularly 6 ± starting arranged from a center of the transmitting-receiving surface in each case at such a distance d ± to the coupling surface 10 so that the flow distance d ', ie the distance in the direction of the transmitting-receiving surface 6 ± standing normal to the coupling ¬ face 10 for each transducer element 4i equal length and the assay sensitivity for each transducer element 4i is thus equal.

In principle, however, it is also possible that individual

Transducer elements 4i such on the flow body 12 be arranged so that the distance d ± between the center of the transmitting / receiving area 6 ± of the transducer elements 4i and perpendicular to the coupling surface 10 of the lead body 12 for all transducer elements 4i is equal. A constant distance d ± enables easy control of the transducer elements 4i by the control ¬ device 17 and its control software, because no software modification as compared to a linear array is required.

The tooth flanks 22 of the lead body 12 are employed with respect to the coupling surface 10 at different angles, so ¬ that the transmitting / receiving surfaces 6i and 6e of the transducer elements 4i to 4ε are inclined to each other, wherein the incremental angle of inclination θίι, ι + ι between each adjacent

Transducer elements 4ι is ι + ι different sizes. Of the

incremental tilt angle 0 (2,3 according to FIG. 3, for example, greater than the incremental tilt angle 0 (1, 2. The saw teeth and the tooth flanks 22 of the lead body 12 therefore have an irregular shape so that the transmitting and receiving surfaces 6 1 are oriented to 6e of the individual transducer elements 4i to 4ε opposite the Kop ¬ pelfläche 10 at different angles.

Also in this embodiment, the six

Transducer elements 4i so inclined to each other that the Neigungswin ¬ ± kel, j j between the transmitting / receiving area 6 ± 6 two

Transducer elements with the number of befindli- between these surfaces transducer elements 4i increases. The inclination angle 0 (1.3 so ¬ ι with correspondingly greater than the incremental tilt angle, 2 · In other words, the angle under which the Zahnflan ¬ ken 22 and thus the transmitting / receiving surfaces are employed 6 ± against the coupling surface 10, decrease in insonification direction. the transducer elements 4i fla ¬ cher are arranged so that the transducer element is orien ¬ advantage 4i under the ge ¬ slightest angle of attack with respect to the coupling surface 10 that is, in insonification direction. thus, for example, a focusing of the individual sound beams in different points of intersection S reaches ± become.

Furthermore, the device 2 comprises 4i control means 17 for the time-delayed driving of the transducer elements. The adjacent transducer elements 4i are stimulated sequentially in time, to pivot the angle of incidence in the workpiece 16 either electronically or in addition to focus the ultrasonic wave. This case, both single and all transducer elements 4i, or a group of transducer elements 4i, for example, two adjacent transducer elements 4i, 4i + i are operated, ge ¬ jointly. In Fig. 3, in turn, are the central axes 14 of each emitted from a transducer element 4i sound beam and the points of intersection S ± in which the time jewei ¬ central longitudinal axes intersect 14, located.

In FIG. 4 is - as mentioned above - shows how the ultrasonic transducer array or the individual

Transducer elements 4i are driven to obtain a desired beam angle and a desired focus F. According to Fig. 4, the transducer elements 4i are driven to 4ε temporally ¬ delay, on the one hand to pivot the angle of incidence and on the other hand einzu- provide a desired depth of focus. In FIG. 4, a wave front 24 is illustrated, which leads to a focusing of 4 3 to one another with a time delay from the transducer elements 4i, 4 2, emitted ultrasonic waves in the focus F. With an ultrasonic test head according to the inventions dung large pivoting angle range can be covered with a small number of transducer elements at a suitable time delay of the ultrasonic pulses.

Claims

claims
includes 1. ultrasonic test head with an ultrasonic transducer assembly (2) arranged side by side a plurality in a row, with a time delay addressable transducer elements (4i) whose emitter-receiver surfaces (6 ±, 6j) are arranged inclined to one another / that the inclination angle ( o (i, j) between the transmitting / receiving surface (6 ±, 6y) of the two transducer elements (4i, 4j) to the number of located between these
Transducer elements (4i) increases and at least two of the
incremental tilt angle (o (i, i + i) between each Benach ¬ disclosed transducer elements (4i, 4i + i) are different from each other.
2. ultrasonic test head according to claim 1, in which all the
incremental tilt angle (o (i, i + i) between each Benach ¬ disclosed transducer elements (4i, 4i + i) are different from each other.
3. ultrasonic test head according to claim 1 or 2, wherein the width (b) of the transducer elements (4i) is greater than 1.5 times the wavelength of the ultrasound signal generated by this are.
4. che ultrasonic test head according to any preceding Ansprü-, are arranged in which the transducer elements (4i) on the tooth flanks (22) of a sawtooth-shaped flow body (12).
5. ultrasonic test head are arranged according to one of the preceding Ansprü ¬ che, in which the transducer elements (4i) on a leading body (12) such that between transmitting / receiving surface (6 ±) of the transducer elements (4i) and the coupling - surface (10) of the flow body (12) each resulting flow ¬ distance (d ') for all transducer elements (4i) is the same.
6. ultrasonic test head according to any preceding Ansprü- che, in which the transducer elements (4i) on a leading body
(12) are arranged such that between said With ¬ telpunkt the transmitting / receiving surface (6 ±) of the transducer elements (4i) and perpendicular to the coupling surface (10) of the flow body (12) resultant distance (d ±) for all transducer elements (4i) is the same.
7. A method for operating an ultrasound test head according to one of the preceding claims, wherein the
Angle of incidence of the ultrasonic signal in a workpiece (16) by delayed common controlling at least two adjacent transducer elements (4i, 4i + i) is pivoted.
8. A method for operating an ultrasound test head neighboring one of claims 1 to 6, wherein the focal distance of ULT raschallsignals ¬ delayed from the surface of the workpiece by time shared driving of at least three benachbar ¬ ter transducer elements (4i, 4i + i, 4i + 2) is changed.
9. A method for operating an ultrasound test head according to one of claims 1 to 6, in which the angle of the
Ultrasonic signal into a workpiece (16) by time-delayed actuation of at least two joint not directly be ¬ nachbarter transducer elements (4i, 4i + j) is pivoted.
10. A method for operating an ultrasound test head of claim 9, wherein the control of two not directly adjacent transducer elements (4i, 4i + j) is such that the egg ne transducer element (4i) and (4i + j) in the transmit mode, and the walls ¬ re transducer element (4i) and (4i + j) is operated in the receiver operation.
11. A method for operating an ultrasound test head according to one of the preceding claims, in which the
Transducer elements (4i) can be individually controlled and takes place from ¬ evaluation of the received echo signals with a juice process.
EP20130715151 2012-03-20 2013-03-20 Ultrasound probe Withdrawn EP2828009A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE102012204444 2012-03-20
DE201220104119 DE202012104119U1 (en) 2012-10-26 2012-10-26 An apparatus for ultrasonic testing of a workpiece
PCT/EP2013/055859 WO2013139872A1 (en) 2012-03-20 2013-03-20 Ultrasound probe

Publications (1)

Publication Number Publication Date
EP2828009A1 true true EP2828009A1 (en) 2015-01-28

Family

ID=48083114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20130715151 Withdrawn EP2828009A1 (en) 2012-03-20 2013-03-20 Ultrasound probe

Country Status (4)

Country Link
US (1) US20150009782A1 (en)
EP (1) EP2828009A1 (en)
CA (1) CA2865054A1 (en)
WO (1) WO2013139872A1 (en)

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Publication number Priority date Publication date Assignee Title
CA3005790A1 (en) * 2015-12-10 2017-06-15 1929803 Ontario Corp. D/B/A Ke2 Technologies Systems and methods for automated fluid response measurement

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US4865042A (en) * 1985-08-16 1989-09-12 Hitachi, Ltd. Ultrasonic irradiation system
JPH03280939A (en) * 1990-03-29 1991-12-11 Fujitsu Ltd Ultrasonic probe
US5269309A (en) * 1991-12-11 1993-12-14 Fort J Robert Synthetic aperture ultrasound imaging system
JP2004512856A (en) * 1999-12-23 2004-04-30 シーラス、コーポレイションTherus Corporation Imaging and therapeutic ultrasound transducer
US20020112540A1 (en) * 2000-12-20 2002-08-22 Schlumberger Technology Corporation Acoustic method for estimating mechanical properties of a material and apparatus therefor
US6645162B2 (en) * 2000-12-27 2003-11-11 Insightec - Txsonics Ltd. Systems and methods for ultrasound assisted lipolysis
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CA2865054A1 (en) 2013-09-26 application
WO2013139872A1 (en) 2013-09-26 application
US20150009782A1 (en) 2015-01-08 application

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