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Método de detección integral de daños en materiales compuestos

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20161109001
Publicado:
11/11/2016
Caducidad:
11/11/2017
Resumen:
Una universidad alemana ofrece un nuevo método para medir grietas en materiales compuestos especialmente indicado para piezas de gran superficie, como palas de aerogeneradores. Este método se caracteriza por la medición continua, detección temprana y rentabilidad. El sistema se basa en un sensor que consiste en cables trenzados cuyo comportamiento de rotura corresponde al comportamiento de las fibras en el material compuesto. Los puntos de cruce se conectan mediante diodos. La medición se realiza en intervalos establecidos por el usuario, permitiendo una monitorización constante. La universidad busca licenciatarios industriales.

Details

Tittle:
Method for comprehensive damage detection in composite materials.
Summary:
A German university offers a new method to measure cracks in composite materials. It is especially suited for large area parts, such as wind turbine blades. It is characterised by continuous measurement, early detection and cost-effectiveness. Industrial licensees are sought.
Description:
Today composite materials are 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 at all. Other methods, such as the use of strain gauges or glass fibre based systems can take measurements permanently but they can only indirectly detect a fracture in the material.

A German university of applied sciences addresses the above problems. They offer a new wire mesh damage detection system. In this system the sensor consists of a braid of wires whose breaking behaviour corresponds to that of the fibres 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 case of breaking.

The measuring system can be used in large-area parts made from composite material, such as wind turbine blades.The measuring grid is inserted into the respective component during the production process. The measurement can take place in intervals set by the user, so that continuous monitoring is possible. For example, checking the wings of windpower plants is extremely complex and dangerous. There are always some breaks in the wings. The invention offered can detect even small cracks. Thus a replacement can be made before the wing breaks.

The university seeks industrial partners who should integrate (and possibly further develop) the system into their products during the production phase under a license agreement.
Licensees could be manufacturers of large area composite parts, e.g. wind turbine blades or aircraft parts.

Advantages and Innovations:
The new system overcomes shortcomings of conventional systems:
· It is more cost-effective
· It offers high temporal resolution
· It enables continuous measurement
· It enables earlier detection of damage, even of small cracks
Stage of Development:
Under development/lab tested
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
German patent application

Partner sought

Type and Role of Partner Sought:
Industrial partners are sought for license agreements.

Potential licensees manufacture products made from composite materials, e.g. carbon fibre composites, such as wind turbine blades, aircraft parts or other large area parts.

The partners should integrate the system in their production process and possibly help to develop it further.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
German

Keywords

Technology Keywords:
02007005 Composite materials
03004005 Man-made fibres
09001008 Otros ensayos no destructivos
09001009 Tecnología de sensores relacionada con la realización de medidas
04005008 Wind energy