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WiMDaD Wire Mesh Damage Detection - Comprehensive damage detection in composite materials


Kurzfassung

Composite materials are nowadys used in many technical fields. Blades of wind power plants or aircraft parts, for example, are made out of these materials. In order to detect possible cracks or fractures, however, an immense effort is necessary. Conventional methods of material testing such as ultrasound, X-ray or thermography are very time-consuming, if they are possible to employ whatsoever. Other methods such as the use of strain gauges or glass fiber based systems can take measurements permanently, but they can only indirectly detect a fracture in the material.


Problemstellung

Composite materials are nowadys used in many technical fields. Blades of wind power plants or aircraft parts, for example, are made out of these materials. In order to detect possible cracks or fractures, however, an immense effort is necessary. Conventional methods of material testing such as ultrasound, X-ray or thermography are very time-consuming, if they are possible to employ whatsoever. Other methods such as the use of strain gauges or glass fiber based systems can take measurements permanently, but they can only indirectly detect a fracture in the material.


Lösung

The invention is a novel, continuous measuring method, which is also suitable in particular for large-area applications such as, for example, wind turbine blades. The sensor consists of a braid of wires whose breaking behavior corresponds to that of the fibers in the composite material. The crossing points are connected via diodes. An electronic evaluation unit can switch between electrical paths through specific diodes so that the defective part can be identified in the breaking event.


PROvendis GmbH

Dipl.-Ing. Andreas Brennemann
+49.208 94105-33
ab@provendis.info
www.provendis.info
Adresse
Schloßstr. 11-15
45468 Mülheim an der Ruhr



Entwicklungsstand

Machbarkeit


Kontakt | Geschäftsstelle

TechnologieAllianz e. V.
Christiane Bach-Kaienburg
(Geschäftsstellenleiterin)

c/o PROvendis GmbH
Schloßstr. 11-15
D-45468 Mülheim an der Ruhr