WO2003027665A2

WO2003027665A2 - Ultrasonic testing system and test device for testing materials and assembly zones

Info

Publication number: WO2003027665A2
Application number: PCT/EP2002/010425
Authority: WO
Inventors: Alois Zajc
Original assignee: Eads Deutschland Gmbh
Priority date: 2001-09-20
Filing date: 2002-09-17
Publication date: 2003-04-03
Also published as: DE10146340A1; WO2003027665A3; DE10294364B4; DE10294364D2

Abstract

The invention relates to a testing system for testing materials and assembly zones by means of ultrasound. Said system comprises a probe housing (1) that is provided with at least one receiving device (5) for receiving at least one ultrasonic probe with a defined test range for examining an area (A) of a component assembly (B) to be tested. Said probe housing (1) comprises a test chamber (10; 10a, 10b, 10c) in the transition zone between the receiving device (5; 5a, 5b, 5c) and the test zone of the component, which communicates with a feed channel (13) for a test medium via a channel (24; 24a, 24b, 24c) and which maintains the test medium between the ultrasonic probe and the surface of the component. An extraction device (20) is provided with a discharge channel (23) through which the test medium is extracted from the test chamber (10; 10a, 10b, 10c).

Description

Ultrasonic testing device and testing device for testing materials and connection areas

TECHNICAL AREA

The invention relates to an ultrasonic testing device for testing materials and connection areas such as welds.

STATE OF THE ART

From DE 42 37 378 C1, an ultrasound test device for testing materials and connection points by means of ultrasound is known, comprising a test head housing with: at least one test head receiving device for receiving at least one ultrasound test head, which has a predetermined test area for examining a test Has area of a component arrangement; a test chamber arranged in a transition area between the test head receiving device and the area of the component arrangement to be tested, which is connected via at least one connecting channel to a supply channel for a test medium in order to close the test medium between the ultrasonic test head and a component surface hold; a test medium suction device for sucking the test medium out of the test chamber, with an annular first suction channel arranged on an underside of the test head housing facing the component arrangement, above the test chamber around the test chamber and the test head and connected to the test chamber at least one opening is provided on the underside; and a second and a third suction channel, which are connected to the annular first suction channel. In this known ultrasonic test device, the test head housing has a rather complicated structure with a large number of individual parts, undercuts and elaborately designed channels, each with a multiple-angled channel profile. The manufacture of the ultrasonic test device is therefore complex and the test head housing becomes relatively large and heavy. Another known ultrasonic test device is disclosed in DE-AS 1 295 882. This stationary test device has a machine table for storing a component to be tested, and the test head held in a test head housing is arranged on a carriage with which it passes over the table and the like component to be tested is movable. The test head housing is made from a large, flat, plate-shaped block that is approximately triangular in plan view. The test head receptacle and the test chamber are located in a “tip” of the triangle, while in the other “tips” and in an area around the test head on the underside of the test head housing, large outlet openings are provided for the test medium. These outlet openings are connected to a test medium supply device via a large number of angled supply channels and supply chamber. How exactly these channels and chambers are made is not mentioned in DE-AS 1 295 882. In the area of the test chamber, the test medium supplied acts as a coupling medium, while at the outlet openings it functions to keep the test head housing at a constant distance from the component to be tested. The test head housing "floats" to a certain extent on the ejected test medium. In contrast to DE 42 37 378 C1, DE-AS 1 295 882 has no test medium suction device. Such an ultrasonic test device is very large, heavy, unwieldy, can only be operated in a stationary manner and is relatively complex to manufacture. Furthermore, the device is only suitable for testing flat, flat components. In addition, the test medium is lost.

From DE-OS 1 573 432 a stationary ultrasonic test device for testing railway wheels is known. The device comprises a rotatable posture on which a respective railway wheel can be fixed lying. The test head is arranged horizontally and to the side of the holder and, when the holder rotates, scans the railway wheel attached to it.

The so-called contact method is known for carrying out ultrasound tests on structural components, in which a test head with oscillators is used to generate the ultrasound. The transducers transfer the ultrasound directly to the Structural component. The presence of a material defect is concluded from the response of the structural component.

To carry out ultrasonic tests on weld seams, the test devices of the type described above mostly use water or gel as test or transmission medium, via which the ultrasonic waves are transmitted. To do this, the welded seam section of the component is either immersed in a plunge pool or placed under water by means of a water jet. In both cases, the water has to be collected and drained off via a pipeline and conveyor system, which requires a relatively large amount of equipment.

Another disadvantage of known ultrasonic testing devices, as already indicated, is that they are relatively large, difficult and unwieldy and complicated to manufacture. Conventional ultrasound test devices cannot be used or can hardly be used, particularly in the case of very large components, such as those used in the aerospace industry, since the dimensions of the components to be tested generally exceed the absorption capacities of even large test devices. In addition, the component to be tested would first have to be transported to the test device, which meant a disproportionately high effort, in particular if different components are manufactured at different locations and have to be tested.

In addition, previously known ultrasonic test devices are generally only suitable for testing flat or geometrically simple shaped components. This applies in particular to conventional stationary ultrasound test devices, but also to conventional manually operated ultrasound test devices. In the aerospace industry in particular, however, components often have a very complex shape with surfaces that are sometimes multi-curved, so that the testing of such structures is usually complicated and time-consuming and costly. In addition, compared to testing simple components, it is more difficult to create reproducible test conditions. It would therefore be desirable to be here to be able to make the work easier and rationalize it.

PRESENTATION OF THE INVENTION

The object of the invention is to provide an ultrasonic test device which is particularly simple to manufacture and can be adapted particularly effectively to different test conditions without great effort; Furthermore, the ultrasound test device should also be suitable for testing geometrically complex components or surfaces and large components that are difficult to transport.

This object is achieved by an ultrasonic testing device according to the invention with the features of claim 1.

In the ultrasonic test device according to the invention, the entire test head housing with all of its channels, openings and receptacles required for operation can be produced by simple, direct, straight-line extending bores, blind holes or depressions starting from the respective side surfaces of the test head housing. This can be achieved with the simplest production engineering measures and means. Due to the arrangement and design of the respective bores themselves and their relationship to one another, it is also possible in a simple and effective manner to produce a test head housing without the need for a complex, multi-part housing construction. Rather, the design according to the invention makes it possible to manufacture the test head housing even from a single, monolithic or one-piece block without any losses in terms of manufacturability, functionality or the test quality that can be achieved. The manufacturing outlay for producing the entire test head housing can therefore be considerably simplified and rationalized compared to previously known designs. At the same time, the design according to the invention enables an extremely small, compact and lightweight construction of the test head housing. Dimensions of 19 x 19 x 19 mm, for example, can be easily implemented. Because of the positive properties described above the ultrasound test device according to the invention can also be configured in a simple manner as a mobile unit or portable. The ultrasonic test device according to the invention can therefore be used in a particularly suitable manner for testing very large components, which are themselves difficult to move or can be transported with great technical effort, and can be used for testing various such components directly on site, which is considerable Makes work easier, saves time and rationalizes. The small, compact and easy-to-use design of the test head housing also makes it possible to reliably check even geometrically complex three-dimensional or curved components, especially when the test head housing is guided manually, since the test head housing can easily follow the contour of the component in question. This is also conducive to achieving reproducible test conditions and reliable test results, and the ultrasound test device can be adapted to different test conditions with little effort.

Preferred design features of the ultrasonic testing device according to the invention are the subject of the subclaims.

The ultrasound device according to the invention is described and explained in more detail below with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

It shows:

1 shows a transparent, perspective wire line drawing of a first

Embodiment of the ultrasonic test device according to the invention, with a schematic view of an associated guide device according to a first variant and a cut of a component with a weld seam to be tested, Fig. 2 is a transparent, perspective wire line drawing of a

Embodiment of the ultrasonic test device according to the invention seen in isolation,

3 is a schematic top view of the ultrasonic

1 and 2;

Fig. 4 shows a section through the test device along the line A-A according to the

Fig. 3,

Fig. 5 shows a section through the test device along the line B-B according to the

Fig. 3,

6 is a perspective view of an embodiment of a guide device in a second variant,

Fig. 7 is a transparent, perspective wire line drawing of a second

Embodiment of the ultrasonic testing device according to the invention,

Fig. 8 is a schematic plan view of the second embodiment of the

Ultrasonic testing device according to FIG. 7,

9 shows a section through the ultrasound test device according to the second

Embodiment along the line D-D according to FIG. 8,

10 is a schematic plan view of an ultrasonic

Test device according to a third embodiment, and

11 is a schematic, partially sectioned front view of the ultrasonic testing device of FIG. 10. PRESENTATION OF PREFERRED EMBODIMENTS

In the following description and in the figures, identical parts and components are also identified with the same reference symbols in order to avoid repetitions, provided that no further differentiation is necessary.

1 to 5, a first embodiment of an ultrasonic testing device according to the invention is shown. This ultrasound test device comprises at least one test head housing 1, which is placed with its underside 2 on a surface of a component to be tested or a component arrangement B in the test mode. The test head housing 1 has at least one test head holder 5 or a test head holder with a fastening device 6. The test head holder 5 serves to hold a test head (not shown), which can be fixed in the test head holder 5 by means of the fastening device 6. The test device formed by the test head housing 1 and the at least one test head serves as part of the ultrasonic test device according to the invention for testing an area A to be tested (see FIG. 1) of a component arrangement B (see FIG. 1) or a component by means of ultrasound. Water is preferably used as the test medium or coupling medium, although other means according to the prior art, in particular mixtures with water, are also suitable.

The area A to be tested can be a connection point between two components, e.g. a weld, or the surface of a component. In contrast, the test area is the area that is currently detected by the test head by emitting and measuring the reflected ultrasound waves.

A test chamber 10 for receiving the test medium is formed in the test head housing 1 from the test head receiving device 5 in the direction of the area A to be tested. This test chamber 10 is filled with the test medium during operation, which ensures a constant and uniform sound coupling and sound introduction into the area A of the component to be tested. in the Test operation, if a test head is received in the test head receiving device 5, the test chamber 10 is located below the test head and, based on the arrangement of the test head housing 1 in relation to the component to be tested, between the test head and the surface of the area A to be tested; in other words, the test chamber 10 is located in a transition area between the test head receiving device 5 and the area A to be tested. The test head can also partially protrude into the test chamber 10.

Furthermore, the test head housing 1 has a feed channel 13 for supplying the test medium. The supply duct 13 is connected to the test chamber 10 by means of a separate connecting duct 14. With a suitable arrangement and orientation of the supply duct 13, the connecting duct 14 can also be formed as a component of the supply duct 13 (e.g. coaxially or in the context of a common bore).

The test head housing 1 further comprises a suction device 20 on the underside 2, which is connected to at least one suction channel 25 via at least one connecting channel 24. In this exemplary embodiment, this first suction channel 25 and also the at least one connecting channel 24 are designed to be open towards the bottom 2 or have one or more openings on the bottom 2. The corresponding edge areas of the openings can be sealed with seals against the component surface of the area A to be tested. The first suction channel 25 runs on the underside 2 in a ring around the at least one test head receptacle 5 and the at least one test chamber 10 and is connected to the latter via the open connecting channel 24 in order to suck off the test medium emerging from the test chamber 10. The annular first suction channel 25 is also connected to a second tubular suction channel 23.

The suction device 20 is also assigned a pump and corresponding lines (both components are not shown). The test medium supplied and accumulating in the suction channel 25 and in the connecting channel 24 is sucked off by the pump. In this way, a self-contained Test medium circuit can be realized, in which the test head housing 1 with its at least one test chamber and its respective channels is integrated. The test medium can thus circulate in the test mode, so that the consumption of test medium is low.

In all of the embodiments of the test head housing 1 of the ultrasound test device according to the invention shown in FIGS. 1 to 9, the test head housing 1 essentially has the shape of a cuboid block 1a, preferably made of metal or plastic. In this variant, the housing or cuboid block 1a is monolithic, i.e. it consists of a single, one-piece block of material. In the cuboid block 1a, three test head receiving bores 5a, 5b, 5c are arranged as receiving means 5, each of which is assigned to a test chamber 10a, 10b, 10c, as can be seen, for example, from FIG. 1. The test head receiving bores 5a, 5b, 5c extend straight from the top 3 of the test head housing 1 to the underside 2 of the test head housing 1 and each open directly into the respective test chamber 10a, 10b, 10c. A test head (not shown) can be inserted into each of these bores 5a, 5b, 5c.

To expand or widen the test area, the test head receiving bores 5a, 5b, 5c in this configuration example are offset with respect to the longitudinal axis L of the test head housing 1 or with respect to a direction of movement of the test head housing 1 specified in test operation, for example by a guide track, as is particularly well shown in FIG the top view of FIG. 3 can be seen.

In the embodiment of the test head housing 1 according to the invention, the feed channel 13 and the second drain channel 23 are each designed as bores. More specifically, the supply duct 13 is designed in the form of a blind hole extending from the top 3 of the test head housing 1, 1a and extending in a straight line towards the bottom 2 of the housing. The supply duct 13 could in principle also be designed as a through hole, but then the lower end of the through hole should expediently be closed. And the second suction channel 23 is in the form of a top 3 of the Test head housing 1, 1a outgoing, extending straight to the bottom 2 through bore formed, which directly into the annular first suction channel 25 (a junction in the connecting channel 24 or both in the channel 24 and the channel 25 is also possible).

In the vicinity of the underside 2 of the test head housing 1, a total of three connection channels 14a, 14b, 14c extend from the supply channel 13, one of which leads to the respective test chamber 10a, 10b or 10c or the respective test head receiving bore 5a, 5b, 5c runs and opens into this (see for example Fig. 5). For this purpose, each of the connecting channels 14a, 14b, 14c is designed in the form of a bore extending from a second side surface 7b of the test head housing 1, 1a and extending in a straight line in the direction of a first side surface 7a. A respective hole penetrates the feed channel 13 and the associated test head mounting hole 5a, 5b, 5c in the area of the respectively assigned test chamber 10a, 10b, 10c and connects the feed channel 13 and the relevant test head mounting hole 5a, 5b, 5c directly to one another.

As can be seen particularly well in FIG. 3, the bores of the connecting channels 14a, 14b, 14c not only penetrate the supply channel 13 in each case, but also mutually in an intersecting arrangement in the area of the supply channel 13. Each of the connecting channels 14a, 14b, 14c can be closed in the region of that side surface 7b of the test head housing 1, 1a from which it originates at a bore section 15a, 15b, 15c with sealing means (not shown). The bore sections 15a, 15b, 15c are production-related in the configuration of the test head housing according to the invention. Grub screws (not shown) are preferably used here as a sealant to seal the connecting channels 14a, 14b, 14c. Suitable other types of sealants can also be provided.

The fastening devices 6 for the test head receiving devices or test head receiving bores 5a, 5b, 5c have the shape of fastening bores 6a, 6b, 6c. Each of these bores 6a, 6b, 6c extends from the first side surface 7a of the cuboid block 1a to the corresponding one Test head receiving bore 5a, 5b or 5c and opens into this (see esp. Fig. 3). A fixing screw (not shown), for example a grub screw, can be screwed into each fastening bore 6a, 6b, 6c in order to fix a test head inserted into the corresponding test head receiving bore 5a, 5b, 5c. The fastening bores 6a, 6b, 6c in the illustrated embodiment run orthogonal to the test head mounting bores 5a, 5b, 5c and can generally run at an angle to them.

In the embodiment shown in FIGS. 1 to 5, the annular first suction channel 25 comprises four sections running at right angles to one another, which run around the test head receiving bores 5a, 5b, 5c (see in particular FIGS. 2 and 3). As a result, the test medium flowing out of the test chambers 10a, 10b, 10c during operation can be sucked off from all sides. For this purpose, a plurality of connecting channels 24a, 24b, 24c are provided, which are at least partially open towards the underside 2 and connect the respective test chamber 10a, 10b or 10c to the annular first suction channel 25.

The test head housing 1, 1a shown in the figures also has a bore 26 for receiving a proximity switch (not shown). The bore 26 designed as a through bore extends from the top 3 of the test head housing 1, 1a to the underside 2 thereof and is open on the underside 2. The proximity switch is connected via lines to a control device (not shown) which in particular controls the switch-on and switch-off processes of the test device. A proximity switch accommodated in the bore 26 can interact with the component to be tested. Depending on the switch type, the proximity switch can work in a contact or non-contact manner.

When the test device is switched on, it is provided according to the invention to first provide the pump for suctioning off the test medium and then the supply of the test medium via the feed channel 13. Conversely, when the test device is switched off, first the supply of the test medium via the supply duct 13 and only a predetermined time after that the pump for sucking off the test medium must be switched off. This will cause one if possible Small amount of the test medium remains on the component after the component test has been carried out.

These switching on and off processes can be implemented in a touching proximity switch, for example by running over suitable contact points on the component to be tested (for example: first contact point: switching on; second contact point: switching off). The contact points can also be provided on an auxiliary device instead of on the component, for example on a guide device described in more detail below and in particular on a guide track provided on this. A non-contact proximity switch, in turn, could be designed such that it switches on the supply of the test medium when the test head housing 1 is attached to the component to be tested, and switches off the supply of the test medium as soon as the test head housing 1 is removed from the component. The switch-on and switch-off processes can of course also be initiated manually or by specifying feed times or times for the test medium, by specifying a specified test medium consumption or by exceeding other specified limit parameters. When carrying out the material or connection test, the area to be tested is traversed after the switch-on processes described. Depending on the ratio of the amounts of the test area in relation to the area to be checked, this process must be repeated until the entire area to be checked has left the test heads.

The test device described above can be guided in a controlled manner along the component arrangement B to be tested or the area A to be tested by means of a guide device. A first variant of such a guide device F is shown schematically in FIG. 1. The guide device is designed like a rail and has two laterally spaced rails 60, 62, which define a single guide path 50 with lateral contact surfaces between them. The test head housing 1 is placed between the rails 60, 62 in such a way that the underside 2 of the test housing 1 rests on the component surface and two side surfaces of the test head housing 1, which then function as contact surfaces, correspond to the contact surfaces of the rails 60, 62. A second variant of a guide device F of the ultrasound test device according to the invention is outlined in perspective in FIG. 6. This guide device F is designed in the form of a plastic test mask adapted to the contour of a curved component arrangement to be tested or the contour of the area to be tested. The test mask has a plurality of guideways 50a, 50b, 50c, 50d in the form of openings or longitudinal grooves which are straight in their longitudinal extent and follow the curved contour of the component arrangement. The inside of the guide means F to be placed on the component to be tested is designated with the reference number 51 and the outside with the reference number 52.

In the present case, the guide device F or test mask according to FIG. 6 has quick positioning means, with the aid of which the test mask can be positioned particularly quickly and precisely on the component arrangement to be tested and can be temporarily fixed thereon in order to carry out the test method. In this example, the quick positioning means are holes 54 provided in the test mask, into which corresponding plug pins, e.g. are insertable on the component to be tested.

The guide device F shown in Fig. 6 is used to check weld seams that a tubular component, e.g. connect an engine inlet with ribs provided on the outside thereof. For this purpose, the test head housing 1 is inserted into the relevant guideway 50a, 50b, 50c, 50d in such a way that the underside 2 of the test housing 1 rests on the surface of the component and is moved in the relevant guideway 50a, 50b, 50c, 50d over the area to be tested.

The guideways 50a, 50b, 50c, 50d can also have a width which is greater than a width of the test head housing 1, 1a, so that the test head housing 1, 1a passes over a larger test area by successive application on the respective side edges of the guideways. The guide device F can also be configured differently than shown in FIGS. 1 and 2. For example, a guide device according to the invention can also have guide tracks with only a single rail and / or a single or more contact surfaces, or the width of the guide track can be adjustable. The contact surfaces, the guideways and the like for guiding the test head housing 1 can also be curved. Furthermore, it is possible to produce the guide device F from a flexible material, for example a soft PVC film with a thickness of approx. 2-8 mm, which can be nestled onto a contour of the test area A of the component arrangement B to be tested. The guide device F can then be adapted particularly simply and variably to different shaped or curved component arrangements.

7, 8 and 9, a second embodiment of the testing device according to the invention is shown. This variant has only a single probe holder 5 in the form of a central bore. The connecting channel 14 is produced starting from a third side surface 7c of the test head housing. The open, ring-shaped first suction channel 25 on the underside 2 of the housing has a circular ring shape. And the open connection channels 24a, 24b are cross-shaped.

10 shows a schematic top view of an ultrasonic testing device according to the invention in accordance with a third embodiment, and FIG. 11 shows a partially sectioned front view of the same. In this variant, the test head housing 1 or its housing block 1a has a cylindrical shape with a circular cross section. And the test head receiving bores 5a, 5b, 5c extend parallel to the cylinder axis. In addition, unlike for example in FIG. 4, the test head receiving bores 5a, 5b, 5c are not offset, but are arranged exactly one behind the other on the longitudinal axis L of the housing block 1a. Due to the cylindrical shape, the test head housing 1 is rotatably mounted in the guideway 50, as indicated by a double arrow around the circumference of the test head housing 1. The test area of the test heads (not shown) accommodated in the test head receiving bores 5a, 5b, 5c can be changed simply by rotating the test head housing 1. In the present example is the test head housing 1 is held in an adapter or housing adapter 56. As can be seen from FIG. 10, the housing adapter 56 is designed like a clamping jaw and has two clamping jaws 56a, 56b, which are connected to one another via an adjustable locking device 58 (here: clamping screws with left / right-hand thread and adjusting wheels) and enclose the test head housing 1. If the clamping jaws 56a, 56b are not tightened too tightly, the test head housing 1 can also be rotated in the housing adapter 56 if necessary.

The housing adapter 56 can accommodate different test head housings or the housing blocks with different diameters, and that

Test head housings can be easily held using the adapter and easily moved or rotated manually or mechanically. If the housing adapter 56 is rotated by 90 ° relative to the illustration in FIG. 10 and inserted into the guideway 50 and fixed further below on the housing block 1 compared to FIG. 11, the side surfaces of the adapter can also be used as contact surfaces for guiding the

Serve housing blocks 1 in the guideway 50. You can also separate them

Provide contact surfaces or guide means on the housing adapter 56. Furthermore, it is possible to make the width of the housing adapter 56 adjustable so that it can be adapted to different track widths of guideways. The ultrasound test device according to the invention is thus simple and effective and can be adapted to different test situations with little technical effort.

Elaborate changes to the device are not necessary for this.

The invention is not restricted to the above specific design examples, which only serve to explain the basic idea of the invention in general. Rather, the ultrasound test device according to the invention can also assume other suitable embodiments within the scope of protection. Although not explicitly noted above, the supply duct and the drain duct in particular are equipped with suitable adapters (for example threads or pressed-in or glued-in connecting tubes / sockets or the like) for corresponding external connecting lines. Contrary to the embodiments in the above examples, in which the respective bores for the test head receptacles 5, 5a-c, for the feed channel 13, for the drain channel 23 and for the Proximity switch receptacle, etc. extend at right angles to the side of the test head housing from which they originate, the bores can in principle also be arranged at another suitable angle to the housing side in question.

In addition, the test head housing does not necessarily have to have the geometric shape of a housing block or block of blocks according to the illustrated embodiments. It can also be designed as a cast part, so that no machining is required to produce the corresponding receptacles, bores and channels. The test head housing 1 can also be designed as a frame (e.g. made of plastic, metal or fiber composite material (FVW)), in which the respective receptacles, bores and channels in the form of sleeves, tubes or lines are arranged in a corresponding manner as described above.

Reference symbols in the claims, the description and the drawings serve only for a better understanding of the invention and are not intended to limit the scope of protection.

LIST OF REFERENCE NUMBERS

denote s:

Probe housing a block of blocks bottom of 1 or 1a top of 1 or 1 a

Test head holder / test head mounting device a-c Test head mounting holes Mounting device for test head a-c Mounting holes for test heads a First side face of 1 or 1 a b Second side face of 1 or 1a c Third side face of 1 or 1 a

0 test chamber 0a-c test chambers 1 2 3 supply channel for test medium 4 connecting channel 4a-c connecting channels 5a-c bore sections of 14a-c

0 Suction device 1 2 3 Drain channel for test medium 4 Open connection channel 4a-c Open connection channels 5 Annular suction channel for test medium 26 Hole for proximity switches

50 guideway from F

50a-d guideways from F

51 inside of F

52 outside of F

53 -

54 mounting holes from F

56 housing adapter

56a jaw

56b jaw

58 Locking device / clamping screws

60 guide rails from F

62 guide rail from F

A area to be checked by B

B Component arrangement / component

F Guide device / guide means

L longitudinal axis of 1, 1a

Claims

Patent claims

1. Ultrasound test device for testing materials and connection points by means of ultrasound, comprising a test head housing (1, 1 a) with at least one test head receiving device (5; 5a, 5b, 5c) for receiving at least one ultrasound test head that has a predetermined Test area for examining an area to be tested (A) of a component arrangement (B); one in a transition area between the probe head

Receiving device (5; 5a, 5b, 5c) and the area (A) of the component arrangement (B) to be tested arranged test chamber (10; 10a, 10b, 10c), which via at least one connecting channel (14; 14a, 14b, 14c ) is connected to a supply channel (13) for a test medium in order to hold the test medium between the ultrasonic test head and a component surface; a test medium suction device (20) for sucking the test medium out of the test chamber (10, 10a, 10b, 10c), with an underside (2) of the test head housing (1, 1 a) facing the component arrangement (B) , around the at least one test chamber (10, 10a, 10b, 10c) which runs and is connected to the annular first suction channel (25), on which at least one opening is provided on the underside (2); and a second suction channel (23) which communicates with the annular first suction channel (25); characterized in that the probe holder (5; 5a, 5b, 5c) in the form of one of the

Top (3) of the test head housing (1, 1 a) outgoing, straight to

The underside (2) of the housing extends towards the test head receiving bore (5a, 5b, 5c), which opens directly into the test chamber (10; 10a, 10b, 10c); the supply channel (13) in the form of a straight line to the housing, starting from the top (3) of the test head housing (1, 1a) Underside (2) extending through hole or blind hole is formed; the connecting channel (14; 14a, 14b, 14c) is designed in the form of a straight-line bore extending from a side surface (7b, 7c) of the test head housing (1, 1a) and which forms the supply channel

(13) and the test head mounting hole (5a, 5b, 5c) penetrates in the area of the test chamber (10; 10a, 10b, 10c) and connects the supply channel (13) and the test head mounting hole (5a, 5b, 5c) directly to each other , and from which bore a bore section located in the region of that side surface (7b) of the test head housing (1, 1a) from which it originates

(15a, 15b, 15c) can be closed with sealants; and the second suction channel (23) is designed in the form of a through hole extending from the top side (3) of the test head housing (1, 1a) and extending in a straight line towards the bottom side of the housing (2), which bores directly into the annular first suction channel (25) empties.

2. Ultrasonic test device according to claim 1, characterized in that on the component arrangement (B) facing the underside (2) of the test head housing (1, 1 a) at least one open to the component arrangement (B)

Connection channel (24; 24a, 24b, 24c) is arranged, which connects the test chamber (10, 10a, 10b, 10c) with the annular first suction channel (25).

3. Ultrasonic test device according to claim 1 or 2, characterized in that in the test head receiving bore (5a, 5b, 5c) angled, preferably at right angles, to its (5; 5a, 5b, 5c) bore axis one of a side surface (7a ) of the test head housing (1) outgoing bore (6; 6a, 6b, 6c) opens into which a locking device for fixing the test head in the test head mounting hole (5; 5a, 5b, 5c) can be inserted.

4. Ultrasonic test device according to one or more of the preceding claims, characterized in that the test head housing (1) is designed as a one-piece or monolithic housing block (1a).

5. Ultrasonic test device according to one or more of the preceding claims, characterized in that the housing block (1a) has a cylindrical shape and the test head

Receiving bore (5; 5a, 5b, 5c) extends parallel to the cylinder axis.

6. Ultrasonic test device according to one or more of the preceding claims, characterized in that it has a guide device (F) which can be attached to the component arrangement to be tested (B) and has at least one guide track (50; 50a, 50b, 50c, 50d) Guide the test head housing (1, 1a) over the area (A) of the component arrangement (B) to be tested.

7. Ultrasonic test device according to one or more of the preceding claims, characterized in that the guide device (F) in the form of a contour of the component arrangement (B) and / or the contour of the test area to be tested (A) adapted or adaptable test mask is designed.

8. Ultrasonic test device according to one or more of the preceding claims, characterized in that the guide device (F) is made of a flexible material which can be conformed to a contour of the component arrangement (B) or the test area (A).

9. Ultrasonic testing device according to one or more of the preceding claims, characterized in that the guide device (F) via rapid positioning means (54) on the

Component arrangement (B) can be positioned and fixed.

10. Ultrasonic test device according to one or more of the preceding claims, characterized in that the test head housing (1, 1a) has a contact surface (7a, 7b) corresponding to the guide device (F).

11. Ultrasonic test device according to one or more of the preceding claims, characterized in that a plurality of test head receiving devices (5; 5a, 5b, 5c) are provided, which with respect to a longitudinal axis (L) or a predetermined direction of movement of the test head housing (1 , 1a) are arranged offset to one another.

12. Ultrasonic test device according to one or more of the preceding claims, characterized in that a plurality of test head receptacles (5a, 5b, 5c) and a plurality of connecting channels (14a, 14b, 14c) are provided; and the connecting channels (14a, 14b, 14c) each in the form of direct rectilinear bores (15a, 15b, 15c) from one side surface (7b) of the test head housing (1, 1 a) to the respective test head receiving device (5; 5a, 5b, 5c) or the respective test chamber (10a, 10b, 10c) and extend both through the feed channel (13) and through each other.

13. Ultrasonic test device according to one or more of the preceding claims, characterized in that the test head housing (1, 1a) rotatably mounted on or on an adapter (56), the guide device (F) or the component arrangement (B) and the test

Range of the at least one test head is changeable.

14. Ultrasonic test device according to one or more of the preceding claims, characterized in that the adapter (56) is designed like a jaw and is attached to different diameters of test head housings (1) or housing blocks (1a) and / or to different guideway widths of the guide device (F). is customizable.

15. Ultrasonic test device according to one or more of the preceding claims, characterized in that the test head housing (1, 1 a) has a proximity switch which is arranged in a through hole (26) which is straight from the

Top (3) of the test head housing (1, 1a) extends to the underside (2) thereof.

16. Ultrasonic test device according to one or more of the preceding claims, characterized in that it has a self-contained test medium circuit in which the

Test head housing (1, 1a) with its channels and holes is integrated.