RESEARCH GROUP COMPUTED TOMOGRAPHY

UNIVERSITY OF APPLIED SCIENCES UPPER AUSTRIA - RESEARCH & DEVELOPMENT LTD.

Our Projects

The CT research group at the Wels Campus is working on different research projects in cooperation with various scientific research organisations and industrial partners.

Running research projects  

Acronym Project Name
MiCi Multimodal and in-situ characterization of inhomogenous materials
ADAM ADAM - Advanced Multimodal Data Analysis and Visualization of Composites based on Grating Interferometer Micro-CT Data - www.3dct.at/adam
FWF-FWO Quantitative X-ray tomography of advanced polymer composites
K-Project ZPT+ K-Project for Non-destructive Testing and Tomography Plus - www.nondestructive.at
ArthroKnee Interactive gonarthrosis data base for the three-dimensional microstructure, geometry, and biomechanics of the knee joint
Com3d-XCT Competence Center for High-Resolution 3D X-ray Imaging
MetAMMI Metrology for Additively Manufactured Medical Implants
INTERAQCT International Network for the Training of Early stage Researchers on Advanced Quality control by Computed Tomography - www.interaqct.eu

 

Multimodal and in-situ characterization of inhomogenous materials

MiCi: 01.01.2016 - 31.12.2021

Multimodal and non-destructive testing (NDT) methods are essential in order to characterize materials during their processing, e.g. during thermo-mechanical treatments, and to enable in-situ monitoring of the production process. In this project different NDT methods will be realized in a multimodal test rig. This enables the comparability of different NDT methods. In addition, a new high-resolution X-ray computed tomography system with in-situ stages will be acquired and used for the characterization and validation of NDT methods. Beneath experimental validations, resolution limits of the different NDT methods will be compared to theoretical limits. The experimental and theoretical approach will help to identify the best NDT methods for characterizing certain processes and to locate critical defects within the inspected materials.

Read more: MiCi

Com3d-XCT: Competence Center for High-Resolution 3D X-ray Imaging

Funding period: 1.10.16 - 30.09.17

interreg Austria Czech Republic EN RGB

Non-destructive testing (NDT) of components by means of microcomputed tomography (XCT) is an important task in many fields, e.g. in the automotive and aerospace sector. However, the demands towards NDT methods are continuously increasing due to the development of advanced, complex material systems. Accordingly, new multi-disciplinary NDT approaches have to be developed to approach the challenges in the in-depth 3D characterization of advanced materials.

Read more: Com3d-XCT

MetAMMI: Metrology for Additively Manufactured Medical Implants

Funding period: 1.06.16 - 30.05.19

The medical sector is set to benefit immensely from the rapidly expanding additive manufacturing (or 3D printing) industry, which has the capability to print a range of medical devices, such as prosthetics, dental implants and hearing aids, tailored to a specific patient.

While medical devices are subject to strict safety requirements, additive manufacturing technology has advanced at a much faster pace than the available standards and quality controls. The high roughness, complex geometries, and internal structures of additively manufactured medical devices make acquiring accurate data for quality control challenging.

Read more: MetAMMI

Quantitative X-ray tomography of advanced polymer composites

FWF-FWO: 01.04.2017 - 31.03.2020

Advanced composite materials (ACMs) typically contain two or more constituents, such as matrix, fibers, inclusions and pores, with different physical and chemical characteristics. When combined, they produce a material with unique properties in terms of weight, strength, stiffness, or corrosion resistance.

To inspect and study their 3D internal structure in a non-destructive way, the ACMs are imaged using X-ray computed tomography, in which a 3D dataset is reconstructed from the X-ray radiographs. The 3D dataset is subsequently further processed and analyzed in multiple sequential steps. This conventional workflow, however, suffers from inaccurate modeling and error propagation, which severely limits the accuracy with which ACM parameters of interest can be estimated.

Read more: FWF-FWO

ADAM - Advanced Multimodal Data Analysis and Visualization of Composites based on Grating Interferometer Micro-CT Data

ADAM project duration: 01.03.2016 - 28.02.2019

Within recent years, the need for new, cost-effective, function-oriented, highly integrated, and light-weight components has strongly grown in many high-tech industries such as aerospace, automotive, marine, and construction. The drivers behind this trend are mainly found in the rising application demands regarding efficiency, safety, environment, and comfort. Among desired functional and -mechanical properties, the requirements on new materials and components include high strength, elasticity, durability, energy efficiency, and light weight. Unlike conventional materials such as aluminum, steel, or alloys, fiber-reinforced polymers (FRPs) – composites made of a polymer matrix reinforced with carbon, glass, or other type of fibers – fulfill these requirements to a high extent. To design new materials and components, detailed investigations and characterizations of FRP materials are vital. In industrial settings, FRP components and materials are nondestructively tested, e.g., by visual inspection, tapping, or ultrasonic inspection. However, conventional methods are increasingly facing their limits regarding accuracy, level-of-detail, and inspection time. To overcome these limitations, industrial 3D X-ray computed tomography (XCT) has received much attention in quality control due to its high spatial resolution and ability to precisely capture external and internal structures in one scan. Compared to other non-destructive testing methods for FRPs, XCT is yet the only method capable of delivering full 3D information for detailed inspection and quality control.

Read more: ADAM

K-Project for Non-destructive Testing and Tomography

K-Project ZPT: September 2009 - August 2014 

The need for NDT methods is driven by the development/innovation of new products, materials and technologies and by the demand for enhanced quality control and cost reduction in industry. Many countries have already established specialized research centre for NDT. With the K-Project an applications-orientated NDT research centre will be created in Austria concentrating and strengthening research on modern NDT methods and application in the country. The combined expertise on NDT-methods and applications-oriented materials science will build a unique knowledge base with regard to non-destructive evaluation. The main focus will be on the following methods...

Read more: K-Project ZPT

spaceXCT: X-ray Techniques for NDT and Damage Characterization of Space Materials and Components

Funding period: 1.06.16 - 30.05.17

One of the main challenges to accelerate the acceptance and use of advanced materials (e.g. polymer matrix composites, additively manufactured parts & electrical, electronic and electro-mechanical components) in the European Space Agency (ESA) is to establish a broadly accepted materials and process quality system, including adequate non-destructive testing (NDT) procedures. However, to profoundly exploit the advantages of advanced manufacturing for space applications, and to ensure highly reliable parts, new approaches to both manufacturing and non-destructive testing (NDT) are needed. NDT procedures must be able to track unique features such as small scale and deeply enclosed porosity, complex part geometry, and subtle internal features.

In the course of spaceXCT we exploit innovations of advanced X-ray imaging technologies, e.g. high resolution X-ray computed tomography (XCT) and grating interferometer X-ray computed tomography (TLGI-XCT), addressing various problems concerning materials science and material processing in space applications. We introduce advanced X-ray technology overcoming disadvantages of standard methods ranging from the inspection of thermally induced crack propagation in polymer composites, void growth during load testing of additively manufactured titanium parts, and crack growth in solder joints of ball grid arrays on multilayer printed circuit boards.

Read more: spaceXCT

ArthroKnee: Interactive gonarthrosis data base for the three-dimensional microstructure, geometry, and biomechanics of the knee joint

Funding period: 1.10.15 - 30.09.17

Due to the increasing life expectancy the incidence of osteoarthritis (OA), the degeneration of articular cartilage and bone in the knee joint, is increasing worldwide. If all alternative treatment options are unsuccessful knee replacement surgery is inevitable. Concerning the annual number of knee replacement surgeries, Austria occupies an international leading position. Although the success rate of knee arthroplasties is high, complications like the loosening of the implant necessitate subsequent treatments. Moreover, the morphology and microstructure of the knee joint varies considerably between patients, therefore the anatomical expertise of orthopedic surgeons is essential. However, the clinical diagnosis is mainly based on radiological findings that neglect the three-dimensional architecture and microstructure of the knee joint.

Read more: ArthroKnee

Compact X-ray computed tomography system for non destructive characterization of nano materials

NanoXCT: May 2012 – April 2015

Within the past decades, advances in miniaturization from micro to nano-scale have had dramatic impacts on our lives. Consumer electronics, which once occupied large volumes, now fit in the palm of a hand. But nanotechnology does not only improve electronics. Also material sciences, chemical engineering or biology are strongly profiting from nanotechnology. The tremendous achievements in all of these areas would not have been possible without corresponding material analytics techniques. Material analytics for nano-scale characterization currently cover destructive methods, surface inspection methods or 2D methods. To date it is not possible to get a comprehensive representation of a specimen including internal and external 3D-structure analysis as well as a chemical analysis without destroying the sample. In this respect nano-scale material analytics is currently on the edge of a new era, which is targeted in NanoXCT. The project addresses the limitations of conventional techniques using 3D X-ray computed tomography, which allows for a non-destructive and fully three-dimensional characterization of specimens.

Read more: NanoXCT

International Network for the Training of Early stage Researchers on Advanced Quality control by Computed Tomography

InterAQCT: October 2013 – September 2017

The non-destructive quality control of a wide variety of high-added value products, produced by innovative manufacturing techniques, remains a challenge. Examples include additive manufacturing parts, micro parts, and fibre reinforced composite parts. Common to these workpieces is the dependency of their performance on internal and inaccessible elements. Nevertheless, customers in multiple sectors are requesting certified quality and reliability.

Read more: INTERAQCT

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