A5103142119- Non-Destructive Testing Techniques
- Ultrasonics and Acoustic Wave Propagation
- Structural Health Monitoring Techniques
- Industrial Vision Systems and Defect Detection
- Welding Techniques and Residual Stresses
- Geophysical Methods and Applications
- Smart Materials for Construction
- Medical Imaging and Analysis
- Aluminum Alloy Microstructure Properties
- Optical measurement and interference techniques
- Radiomics and Machine Learning in Medical Imaging
- Digital Innovation in Industries
- Surfactants and Colloidal Systems
- Plasma Diagnostics and Applications
- Laser and Thermal Forming Techniques
- Advanced Data Processing Techniques
- Mechanical and Thermal Properties Analysis
- Fiber-reinforced polymer composites
- Business Process Modeling and Analysis
- Manufacturing Process and Optimization
- Integrated Circuits and Semiconductor Failure Analysis
- Thermography and Photoacoustic Techniques
- AI in cancer detection
- Metallurgy and Material Forming
- Cardiac Arrest and Resuscitation
University of Duisburg-Essen
2023
Fraunhofer Institute for Ceramic Technologies and Systems
2015-2019
Leibniz University Hannover
2019
Fraunhofer Society
1998-2013
Fraunhofer Institute for Nondestructive Testing
2009-2013
Technische Universität Dresden
2009-2010
Technische Hochschule Ulm
2010
Eddy current testing is well established for non-destructive of electrical conductive materials [1]. The development radio frequency (RF) eddy technology with ranges up to 100 MHz made it possible extend the classical fields application even towards less like CFRP [2][3](Table 2). It turns out that RF on generates a growing number valuable information comprehensive material diagnostic. Both permittivity and conductivity influence complex impedance measured devices. contains about fiber...
Ensuring the correct fiber orientation in draped textiles and 3D preforms is one of current challenges production carbon-fiber reinforced plastics (CFRP), especially resin transfer molding (RTM). Small deviations angle during preforming have a considerable effect on mechanical properties final composite. Therefore, this paper presents an automated method for determining local yarn three-dimensionally draped, multi-layered fabrics. The fabric scanned with robot-guided high-frequency eddy...
This paper propose a new concept of an eddy current (EC) multi-element sensor for the characterization carbon fiber-reinforced polymers (CFRP) to evaluate orientations plies in CFRP and order their stacking. The main advantage sensors is flexible parametrization by electronical switching that reduces effort mechanical manipulation. response was calculated proved 3D finite element (FE) modeling. dedicated nondestructive testing (NDT) can be alternative conventional rotating rectangular sensors.
Carbon fiber based materials are used in many lightweight applications aeronautical, automotive, machine and civil engineering application. By the increasing automation production process of CFRP laminates a manual optical inspection each resin transfer molding (RTM) layer is not practicable. Due to limitation surface inspection, quality parameters multilayer 3 dimensional cannot be observed by systems. The Imaging Eddy- Current (EC) NDT only suitable method for non-resin textile state that...
Eddy current testing is well established for non-destructive of electrical conductive materials. The development radio frequency (RF) eddy technology with ranges up to 100 MHz made it possible extend the classical fields application even towards less materials like CFRP. It turns out that RF on CFRP generates a growing number valuable information comprehensive material diagnostic. Both permittivity and conductivity influence complex impedance measured devices.
Abstract Carbon fiber materials become more and important for many applications. Unlike metal the technological parameters certified quality control mechanisms Raw Fiber Materials (RCF) have not yet been developed. There is no efficient reliable testing system in-line inspections consecutive manual of RCF post laminated Reinforced Plastics (CFRP). Based upon multi-frequency eddy current developed at Fraunhofer IZFP, structural hidden defects such as missing carbon bundles, lanes,...
Abstract Background: The advancement of AI in digital pathology is essential for analyzing image data containing billions cells. This true workflows using bright-field images, but this even more critical multiplex immunofluorescence (mIF) whole-slides due to the increased number fluorescent channels and bit-depth per pixel. These complexities necessitate improved management, efficient visualization both mIF AI-based analysis results. We present a workflow OMERO Plus, AWS SageMaker, Ultivue...
<h3>Background</h3> Multiplexed immunofluorescence (mIF) imaging is a powerful method to improve our understanding of the complex tumor microenvironment (TME). Ultivue's InSituPlex® mIF assays enable robust biomarker detection whole slide specimens and are sensitive high dynamic range expression. also allows for following with terminal H&E stain same slide, bridging classical pathology. However, co-registering multiple scans sub-cellular accuracy necessary accurate phenotyping can be...
Purpose This paper aims to deal with different induction and conduction heating approaches realize a tailored of round billets for hot forming processes. In particular, this work examines the limits in which tailor-made temperature profiles can be achieved billet. way, flow stress distribution based on field material set targeted manner, is decisive Design/methodology/approach For by induction, rotationally symmetric arrangement used parameterized 2D finite element method model created. The...
Carbon fiber materials become more and important for many applications. Unlike to metal, the technological parameters certificated quality control mechanisms have not been developed yet. There is no efficient reliable testing system an inline inspection a consecutively manual of Raw Fiber (RCF) post laminated Reinforced Plastics (CFRP). Based upon multi-frequency Eddy Current device at Fraunhofer IZFP structural hidden defects such as missing carbon bundles, lanes, suspensions, fringes,...
Carbon fiber materials become more and important for many applications. Unlike metal the technological parameters certified quality control mechanisms Raw Fiber Materials (RCF) have not yet been developed. There is no efficient reliable testing system in-line inspections consecutive manual of RCF post laminated Reinforced Plastics (CFRP). Based upon multi-frequency Eddy Current developed at Fraunhofer IZFP, structural hidden defects such as missing carbon bundles, lanes, suspensions,...
Kurzfassung Man kann die Geschäftsarten des produzierenden Gewerbes (Produkt-, System- und Anlagengeschäft) modellhaft nach dem Verhältnis von Wissensanwendung Wissensgenerierung ordnen. Den höchsten Anteil an der hat dabei das Anlagengeschäft. Die findet sowohl in Prozessoptimierung als auch Produktinnovation statt. Beide setzen eine effektive Kommunikation zwischen den Mitarbeitern Unternehmens voraus. Daher müssen Unternehmen klären, ob Anforderungen durch entspricht. In einer Fallstudie...
The carbon fiber reinforced polymers are widely used in the different branches of industry, which requires reliable, non-destructive and fast quality control method. Among existed methods, high-frequency eddy current method satisfies these requirements for composites. Here, we propose a novel depth detection, is based on utilization multi-sensor techniques. last combination electromagnetic sensors penetrating composite with next signals processing evaluation. Based this technique, preform...
Eddy Current Testing has been mainly used to determine defects of conductive materials and wall thicknesses in heavy industries such as construction or aerospace. Recently, high frequency imaging technology was developed. This enables the acquirement information different depth level thin-film structures by realizing proper standard penetration depth. In this paper, we summarize state art applications focusing on PV industry extend analysis implementing achievements applying spatially...
Purpose The transverse flux heating (TFH) concept offers very high electrical efficiency in combination with unique technological flexibility. Numerous advantages make this method beyond competition to be applied e.g. processing lines. However, all potential of TFH can realized practice only by optimal design the inductor shape using numerical modelling and optimization techniques. This paper aims describe a hierarchical approach one-sided induction coil, which will used for continuous...