DE1948768A1 - Method for the non-destructive testing of metal adhesive connections by means of X-ray or gamma rays - Google Patents
Method for the non-destructive testing of metal adhesive connections by means of X-ray or gamma raysInfo
- Publication number
- DE1948768A1 DE1948768A1 DE19691948768 DE1948768A DE1948768A1 DE 1948768 A1 DE1948768 A1 DE 1948768A1 DE 19691948768 DE19691948768 DE 19691948768 DE 1948768 A DE1948768 A DE 1948768A DE 1948768 A1 DE1948768 A1 DE 1948768A1
- Authority
- DE
- Germany
- Prior art keywords
- adhesive
- ray
- gamma rays
- destructive testing
- adhesive connections
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
Landscapes
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Toxicology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Laminated Bodies (AREA)
Description
Verfahren zur zerstörungsfreien Prüfung von Metall-Klebeverbindungen mittels Eöntgen- oder GammastrahlenProcedure for the non-destructive testing of metal adhesive connections by means of X-ray or gamma rays
Die Erfindung bezieht sich auf ein Verfahren zur zerstörungsfreien Prüfung von Metall-Klebeverbindung mittels Eöntgen- oder Gammastrahlen.The invention relates to a method for the non-destructive testing of metal adhesive bonds by means of X-ray or Gamma rays.
Eine Klebeverbindung kommt in vielen Fällen seit längerer Zeit dort zur Anwendung, wo es gilt, Metalle mit anderen Werkstoffen zu verbinden. Eines der bekanntesten Anwendungsgebiete für Metallkleber ist die Stützkernbauweise (Sandwich-Konstruktion), die völlig von dem in der fiegel aus Kunstharzen bestehenden Kleber und der Fügetechnik abhängig ist. Als Beispiel für ein solches in Flugzeugzellenbau angewandtes Bauteil sei ein nicht metallischer, wabenförmiger Kern genannt, der zwischen zwei Beckschichten aus dünnem Metallblech eingeklebt wird. Diese Metall-Klebeverbindung erreicht Festigkeiten, die der Grundfestigkeit einer Leicht»·tall-Legierung gleichkommen} außerdem wird bei einer Klebeverbindung der Ermüdungsbruch eher in einen der beiden Fügeteil· auftreten, als daß sici die Klebefug. selbst löst. n 098 n A / -, 23GIn many cases, an adhesive connection has been used for a long time where it is necessary to connect metals with other materials. One of the best-known areas of application for metal adhesives is the support core construction (sandwich construction), which is completely dependent on the adhesive made of synthetic resins in the fiegel and the joining technology. An example of such a component used in airframe construction is a non-metallic, honeycomb core that is glued between two layers of thin sheet metal. This metal adhesive bond achieves strengths that are equivalent to the basic strength of a light metal alloy, moreover, in the case of an adhesive bond, the fatigue fracture will occur in one of the two joining parts rather than the adhesive joint. solves itself. n 098 n A / -, 2 3G
T-275T-275
.;■■■ ■'-.■■- 2 - 19A8768.; ■■■ ■ '-. ■■ - 2 - 19A8768
Neuerdings wird auch erprobt, im !Flugtriebwerkbau- Metall-Klebeverbindungen einzusetzen. Im Gegensatz zu dem oben erwähnten Zellenbau stehen den zu verbindenden Teilen is allgemeinen hier nur kleine lügeflächen zur Verfügung. Die Verbindung ist in der Hegel " einschnitt ig", d.h. daß sie nur eine einzige Lage umfaßt. Um der thermischen und dynamischen Beanspruchung des Bauteiles standzuhalten, ist bei derartigen Klebeverbindungen eine außerordentliche Sorgfalt zu verwenden.Recently there have also been tests in aircraft engine construction - metal adhesive connections to use. In contrast to the cell construction mentioned above, the parts to be connected are general only small areas for lying are available here. The connection is in the Hegel "single-cut", i.e. that they only have a single layer includes. In order to withstand the thermal and dynamic stresses on the In order to withstand the component, extreme care must be taken with such adhesive connections.
Venn auch im allgemeinen vermutet wird, daß Bit einer Klebeverbindung eine gleichmäßige Spannungsverteilung in der KLebefuge erreicht werden kann, so ist auf keinen Fall di· Möglichkeit auszuschließen, daß in der Klebeschicht Lockerstellen ader Unregelmäßigkeiten, wie Benetzungsfehler, Luftblas«n*iiu3ehlüss# und dergleichen auftreten, durch welche die Güte des Kontaktes zwischen den beiden Klebeflächen bzw. Fügeteilen stark vermindert wird.Even if it is generally assumed that bits of an adhesive bond produce an even distribution of stress in the adhesive joint can be achieved, the possibility must by no means be ruled out that in the adhesive layer looseness or irregularities, such as wetting errors, air bubbles, and the like occur through which the quality of contact between the two adhesive surfaces or parts to be joined is greatly reduced.
Diese Unregelmäßigkeiten in der Kunstharzklebesehicht mittels eines zerstörungsfreien Prüf längsverfahren aufzufinden, ist bis jetzt noch nicht bekannt geworden, da die bei den Burenstranlungsverfuhren benutzten Böntgen- oder Gammastrahlen tob der Klebeschicht nicht absorbiert werden.These irregularities in the synthetic resin adhesive layer by means of a Finding longitudinal non-destructive testing methods is up to now not yet known because of the Burenstranlungsverfuhren used X-rays or gamma rays tob the adhesive layer not be absorbed.
Die Erfindung stellt sich daher die Aufgab·, die aus organischen Klebestoffen (Kunstharze) bestehenden Kl«be-7exbisdungen von gefertigten Metall-Bauteilen mit einem zerstörungsfreien Durchstrählungsverfahren zu prüfen.The invention therefore sets itself the task · arising from organic Adhesives (synthetic resins) existing glue-7exbisdungen of manufactured Metal components with a non-destructive penetration process to consider.
1Q98U/1230;1Q98U / 1230;
0?-2?5 - 3 -0? -2? 5 - 3 -
23.9.1969 ■9/23/1969 ■
ORIGINAL !NSPECTSDORIGINAL! NSPECTSD
134 8768134 8768
Diese Aufgabe wird erfindungsgemäß dadurch, gelöst, daß die eigentliche Klebestoffmasse mit einem Schwermetalloxid kleinster Korngröße innig vermengt wird, wodurch eine die Fügeteile verbindende Klebeschicht zur Verfügung steht, welche die durchgehende Röntgen- oder Gammastrahlung teilweise absorbiert.This object is achieved in that the actual adhesive mass with a heavy metal oxide smallest Grain size is intimately mixed, whereby an adhesive layer connecting the parts to be joined is available, which the continuous X-rays or gamma rays partially absorbed.
Als Schwermetalloxide werden zweckmäßigerweise Blei- oder WoIframoxide herangezogen, welche in pulverigem Zustand der Klebestoffmatrix zugegeben und zu einer pastenförmigen Mischung vermengt werden. Nachdem diese Klebestoff paste, welche durch den Zusatz von Schwermetalloxiden ihre ursprüngliche Klebefähigkeit im wesentlichen beibehält, in bekannter Weise auf die Fügeflächen der Fügeteile aufgebracht wurde, können die entsprechenden Fügeflächen entweder mit oder ohne Anpressdruck aneinander fixiert werden.The heavy metal oxides are expediently lead or tungsten oxides used, which are added to the adhesive matrix in a powdery state and mixed into a paste-like mixture. After this glue paste, which by the The addition of heavy metal oxides essentially retains their original adhesiveness, in a known manner on the surfaces to be joined of the parts to be joined, the corresponding joining surfaces can be used be fixed to one another either with or without contact pressure.
Wird also auf einem geklebten Bauteil eine Röntgenaufnahme in bekannter Weise derart hergestellt, daß die Einstrahlrichtung annähernd senkrecht auf der Klebefläche steht, ist die Möglichkeit gegeben, Unregelmäßigkeiten und dergleichen in der Klebeschicht auf dem Röntgenbild in Form der bei der Durchstrahlung entstehenden Schattenbilder zu entdecken. Die Auswertung eines derartigen fiöntgenbildes hängt von dem an das betreffende Bauteil anzulegenden Qualitätsmaßstab ab.If an X-ray image is thus produced in a known manner on a bonded component in such a way that the direction of radiation is approximately perpendicular to the adhesive surface, there is the possibility of irregularities and the like in the adhesive layer to be discovered on the X-ray image in the form of the shadow images produced during the radiation. The evaluation of a such fiöntgenbildes depends on the component in question the quality standard to be applied.
23.9.1969 - 4 -9/23/1969 - 4 -
10981W 1230 10981W 1 230
ORIGINAL INSPEÖTSD ORIGINAL INSPEÖTSD
; ■'. - 4 ~ ' 13 48768; ■ '. - 4 ~ '13 48768
Der Vorteil des erfindungsgemäßen Prüf Verfahrens best ent demnach darin, daß die Qualität von Metall-Klebeverbindungen gefertigter Bauteile nunmehr mit Hilfe bekannter Durchstrahlungsmethoden, welche für die zerstörungsfreie Werkstoffprüfung zur Verfügung stehen, kontrolliert werden kann.The advantage of the test method according to the invention is best ent accordingly, that the quality of metal-adhesive connections manufactured components now with the help of known radiographic methods, which are available for non-destructive material testing can be checked.
T-275
23.9.1969T-275
9/23/1969
1098 14f/ete30, ο.: , ORIGINAL INSPECT®1098 14f / ete30, ο .:, ORIGINAL INSPECT®
'^ V ά !& ι* i "l! '^ V ά! & Ι * i "l ! '' ''''' '
Claims (1)
MÜNCHEN GMBHENGINES AND TURBINM IJIiIOIi
MUNICH GMBH
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691948768 DE1948768A1 (en) | 1969-09-26 | 1969-09-26 | Method for the non-destructive testing of metal adhesive connections by means of X-ray or gamma rays |
FR6943950A FR2030896A5 (en) | 1969-09-26 | 1969-12-18 | |
GB46118/70A GB1272724A (en) | 1969-09-26 | 1970-09-28 | A method of making and non-destructively testing the joint between two adhesively-bonded components |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691948768 DE1948768A1 (en) | 1969-09-26 | 1969-09-26 | Method for the non-destructive testing of metal adhesive connections by means of X-ray or gamma rays |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1948768A1 true DE1948768A1 (en) | 1971-04-01 |
Family
ID=5746628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19691948768 Pending DE1948768A1 (en) | 1969-09-26 | 1969-09-26 | Method for the non-destructive testing of metal adhesive connections by means of X-ray or gamma rays |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1948768A1 (en) |
FR (1) | FR2030896A5 (en) |
GB (1) | GB1272724A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2250711B (en) * | 1988-02-08 | 1992-10-28 | Gerber Scientific Instr Co | Lightweight table for a photoplotter and method of making same |
US4940633A (en) * | 1989-05-26 | 1990-07-10 | Hermansen Ralph D | Method of bonding metals with a radio-opaque adhesive/sealant for void detection and product made |
-
1969
- 1969-09-26 DE DE19691948768 patent/DE1948768A1/en active Pending
- 1969-12-18 FR FR6943950A patent/FR2030896A5/fr not_active Expired
-
1970
- 1970-09-28 GB GB46118/70A patent/GB1272724A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1272724A (en) | 1972-05-03 |
FR2030896A5 (en) | 1970-11-13 |
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