Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Technology transfer: Automated quality assurance of CFRP surfaces becomes industrial reality

06.03.2014

In collaboration with industrial partners, the Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM in Bremen has developed a new quality assurance method for monitoring the surfaces of fiber reinforced plastics prior to adhesive bonding. Following successful technology transfer, this innovative method will be demonstrated at JEC Europe 2014 in Paris from 11-13 March. The new Bondinspect® method will be presented at the fair by Automation W+R GmbH (Stand N79, Pavillon 7/39).

Lightweight aircraft and cars are designed using components made of carbon fiber reinforced plastic (CFRP).


Change in droplet size at the boundary between a flame-treated (right) and non flame-treated (left) polypropylene blend.

(c) Fraunhofer IFAM

The manufacture of these CFRP components is carried out in metallic molds. Demolding is generally facilitated by treating the molds beforehand with a release agent.

However, some release agent adheres to the molded product and these residues must be removed manually prior to subsequent coating or bonding.

... more about:
»CFRP »ultrasonic atomizer

Contamination of CFRP surfaces by release agent residues impairs adhesion and hence the quality of bonded joints. So how can such residues be detected on components?

Automated monitoring of CFRP surfaces

Fraunhofer IFAM scientists have developed an automated aerosol wetting test suitable for industrial production. This wetting test efficiently inspects the surfaces of large components during the production process.

An ultrasonic atomizer first of all generates a defined water aerosol. This then creates a characteristic pattern of droplets on the component surface that is being inspected. A camera system records these droplets and shows them on a screen.

The droplet size distribution allows statements to be made about the wetting properties of the surface. By defining target values, for example, the cleaning and activation effect of a surface pretreatment step can be automatically monitored.

The advantage of the aerosol test is that large surfaces, for example fiber composite components for aircraft and wind turbines, can also be tested. The water aerosol dries within a very short time and leaves no residues, meaning the components can be further processed shortly after inspection.

Weitere Informationen:

http://www.ifam.fraunhofer.de

Martina Ohle | Fraunhofer-Institut

Further reports about: CFRP ultrasonic atomizer

More articles from Materials Sciences:

nachricht New approach to revolutionize the production of molecular hydrogen
22.05.2017 | Technische Universität Dresden

nachricht Photocatalyst makes hydrogen production 10 times more efficient
19.05.2017 | Kobe University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

Im Focus: Bacteria harness the lotus effect to protect themselves

Biofilms: Researchers find the causes of water-repelling properties

Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

Innovation 4.0: Shaping a humane fourth industrial revolution

17.05.2017 | Event News

 
Latest News

Supercomputing helps researchers understand Earth's interior

23.05.2017 | Earth Sciences

Study identifies RNA molecule that shields breast cancer stem cells from immune system

23.05.2017 | Life Sciences

Turmoil in sluggish electrons’ existence

23.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>