Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Production-integrated inspection of large-scale CFRP components

23.02.2016

In the frame of nondestructive inspection, computed tomography (CT) is a reliable and effective method for three-dimensional examination of the internal structure of objects. However, the inspection of flat components by means of CT has its limits and is turning out to be difficult. In these cases computed laminography (CL) is a time-saving and cost-effective alternative. At this year's JEC WORLD, held from 8-10 march in Paris, France, Fraunhofer IZFP will present CLARA®, a fully featured CL machine for "nondestructive inspection of CFRP components using CL" which was developed by engineers and researchers of this Saarland Institute.

In lightweight construction or in aviation application of fiber-reinforced plastics (FRP) is steadily rising. FRP components are often used in form of very large or flat shapes, which can be examined using the Fraunhofer IZFP’s CL device CLARA® (Computer Laminography and radiography system). As nondestructive inspection of complex components and materials is increasingly required along the entire material cycle but especially during the production process, the development of new, time-saving and cost-effective testing methods is essential.


CLARA®: Computer Laminography and radiography system

Fraunhofer IZFP

CT as a widespread X-ray method can obtain high-resolution 3D volume images to depict the finest structures and details. But considering in particular objects, where CT is unsuitable, CL is an efficient and effective alternative. "While in medicine CL is widely used, industrial applications are seldom to found despite some outstanding advantages compared to CT", Dr. Michael Maisl explains, senior scientist and group manager of the “Reconstruction, Image Processing, CT/CL by X-ray" group at Fraunhofer IZFP.

Unlike CT, CL is perfectly suited for high-resolution inspection of large or planar components. Compared to CT, the inspection time can be significantly reduced. Additionally, a variety of different recording shapes is available, which also enable adjustments to perform fully automated batch inspection.

Similar to CT, radiographs are taken from different angles to compute a three-dimensional representation of the object’s internal structure using a reconstruction algorithm.

Unlike CT, however, the rotation axis is not orthogonal, but inclined to the beam direction. "By this inclination the otherwise inevitable collision between the object and the source or the detector can be avoided. The arrangement ensures the penetration of the object covering any necessary irradiation angles. As a consequence the individual section planes can be reconstructed at any relevant resolution and represented adequately, "Maisl adds.

Traditionally, CL is used for the examination of electronic circuit boards. Recent application areas are related to modern lightweight materials such as fiber reinforced plastics (CFRP, GFRP), which are increasingly common, also in the form oversized parts for wind turbines or in automobile industry and in aviation. Further applications concern the defect inspection of parts or components, e.g. the detection of porosities or inclusions in car body parts or the detection of micro-cracks in photovoltaic modules.

Weitere Informationen:

http://www.izfp.fraunhofer.de/en.html

Sabine Poitevin-Burbes | Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

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

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

Im Focus: Researchers develop method to transfer entire 2D circuits to any smooth surface

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.

Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...

Im Focus: Three components on one chip

Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.

Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...

Im Focus: Substitute for rare earth metal oxides

New Project SNAPSTER: Novel luminescent materials by encapsulating phosphorescent metal clusters with organic liquid crystals

Nowadays energy conversion in lighting and optoelectronic devices requires the use of rare earth oxides.

Im Focus: A bit of a stretch... material that thickens as it's pulled

Scientists have discovered the first synthetic material that becomes thicker - at the molecular level - as it is stretched.

Researchers led by Dr Devesh Mistry from the University of Leeds discovered a new non-porous material that has unique and inherent "auxetic" stretching...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

Expert Panel on the Future of HPC in Engineering

03.12.2018 | Event News

 
Latest News

Electronic evidence of non-Fermi liquid behaviors in an iron-based superconductor

11.12.2018 | Physics and Astronomy

Topological material switched off and on for the first time

11.12.2018 | Materials Sciences

NIST's antenna evaluation method could help boost 5G network capacity and cut costs

11.12.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>