Category

Research
A joint work on bone fracture sensing and acoustic data communication with Prof. Barker and Dr. Bhavsar (both are from Frankfurt Initiative for Regenerative Medicine, University Hospital Frankfurt) has been published in Ultrasound in Medicine & Biology. Abstract: Approximately 6.3 million fractures occur each year in the United States alone. Accurately monitoring the progression of...
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The European Conference on Antennas and Propagation (EuCAP 2019) took place in Krakow (Poland). I have presented two papers at the conference: the first one was about jointed electromagnetic waveguides and the second about microwave breast cancer detection. References: Moll, J., Numerical and Experimental Analysis of Defect Detection in Jointed Electromagnetic Waveguides, 13th European Conference...
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Founding meeting of the subcommittee on Guided Waves together with the expert committee for Structural Health Monitoring and expert committee for Acoustic Emission Testing at Airbus Helicopters in Donauwörth. In the subcommittee on Guided Waves I am coordinating all activities related to signal processing. Currently, three working groups collaborate on ultrasound imaging, wavefield analysis, and...
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The Open Guided Waves platform has been developed to provide benchmark measurements for guided wave-based non-destructive testing (NDT) and structural health monitoring (SHM). The platform is online now and can be accessed here: http://www.open-guided-waves.de
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Ultrasonic guided waves have been used successfully in structural health monitoring (SHM) systems to detect damage in isotropic and composite materials with simple and complex geometry. A limitation of current research is given by a lack of freely available benchmark measurements to comparatively evaluate existing methods. This paper introduces the extendable online platform Open Guided...
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Elastic guided waves constitute a promising approach for structural health monitoring (SHM) applications involving composite structures. Guided-wave SHM systems are composed of a network of ultrasonic sensors, which are permanently attached to a structural component. Besides monitoring, the supplementary capability of the network nodes to exchange information across this mechanical wave-guide itself, represents an innovative...
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Carbon fiber reinforced plastics (CFRP) are widely used in lightweight marine structures due to their high strength and superior fatigue behaviour. In this paper, we will present an innovative methodology for simultaneous load and structural monitoring of a CFRP rudder stock as part of a big commercial vessel. Experimental results are presented here from a...
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This paper presents a novel approach for the detection of surface damage in metallic structures, where the electromagnetic waveguide forms a union with the structure to be inspected. The sensing concept in such jointed electromagnetic waveguides will be described here and measurement results will be presented using a hollow metallic waveguide on an aluminium sample....
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Hemispherical and cylindrical antenna arrays are widely used in radar-based and tomography-based microwave breast imaging systems. Based on the dielectric contrast between healthy and malignant tissue, a three-dimensional image could be formed to locate the tumor. However, conventional X-ray mammography as the golden standard in breast cancer screening produces two-dimensional breast images so that a...
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Abstract: Digital data communication, i.e. the transmission of discrete encoded information, is already pervasive, but possesses an ever-growing importance for everyday life in contemporary societies. The underlying physics can vary vastly, e.g., between fiber-optic communication and wireless mobile cellular networks. However, at least three unifying elements can clearly be identi ed, i.e. modulation, transmission and demodulation....
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