Quantification of Humidity and Salt Detection in Historical Building Materials via Broadband Radar Measurement
Blaschke, Oliver; Brand, Felix; Drese, Klaus Stefan (2023)
Sensors 23 (10), 4616.
DOI: 10.3390/s23104616
Open Access Peer Reviewed
For the investigation of moisture and salt content in historic masonry, destructive drilling samples followed by a gravimetric investigation is still the preferred method. In order to prevent the destructive intrusion into the building substance and to enable a large-area measurement, a nondestructive and easy-to-use measuring principle is needed. Previous systems for moisture measurement usually fail due to a strong dependence on contained salts. In this work, a ground penetrating radar (GPR) system was used to determine the frequency-dependent complex permittivity in the range between 1 and 3 GHz on salt-loaded samples of historical building materials. By choosing this frequency range, it was possible to determine the moisture in the samples independently of the salt content. In addition, it was possible to make a quantitative statement about the salt level. The applied method demonstrates that with ground penetrating radar measurements in the frequency range selected here, a salt-independent moisture determination can be carried out.
On Dispersion Compensation for GAW-Based Structural Health Monitoring
Backer, Alexander; Fairuschin, Viktor; Drese, Klaus Stefan (2023)
Sensors 23 (9), 4282.
DOI: 10.3390/s23094282
Open Access Peer Reviewed
Guided acoustic waves (GAW) have proven to be a useful tool for structural health monitoring (SHM). However, the dispersive nature of commonly used Lamb waves compromises the spatial resolution making it difficult to detect small or weakly reflective defects. Here we demonstrate an approach that can compensate for the dispersive effects, allowing advanced algorithms to be used with significantly higher signal-to-noise ratio and spatial resolution. In this paper, the sign coherence factor (SCF) extension of the total focusing method (TFM) algorithm is used. The effectiveness is examined by numerical simulation and experimentally demonstrated by detecting weakly reflective layers with a highly dispersive A0 mode on an aluminum plate, which are not detectable without compensating for the dispersion effects.
Highly Sensitive Photoacoustic NO 2 Measurement System Based on an Optimized Ring-Shaped Resonant Cell
Fort, Ada; Mugnaini, Marco; Panzardi, Enza; Vignoli, Valerio; Dötzer, Florian; Drese, Klaus Stefan (2023)
Fort, Ada; Mugnaini, Marco; Panzardi, Enza; Vignoli, Valerio; Dötzer, Florian...
IEEE Transactions on Instrumentation and Measurement 2023 (72), 1-10.
DOI: 10.1109/TIM.2023.3244222
Peer Reviewed
Acoustic Limescale Layer and Temperature Measurement in Ultrasonic Flow Meters
Landskron, Johannes; Dötzer, Florian; Benkert, Andreas ; Mayl, Michael ; Drese, Klaus Stefan (2022)
Landskron, Johannes; Dötzer, Florian; Benkert, Andreas ; Mayl, Michael ...
Sensors 2022 (2), 6648.
DOI: 10.3390/s22176648
Open Access Peer Reviewed
Current and emerging microfluidic-based integrated solutions for free hemoglobin and hemolysis detection and measurement
Naeem, Noman; Drese, Klaus Stefan; Paterson, Lynn; Kersaudy-Kerhoas, Maiwenn (2021)
Analytical Chemistry 2021 (94), 75-85.
DOI: 10.1021/acs.analchem.1c04567
Peer Reviewed
Elastic Properties Measurement Using Guided Acoustic Waves
Fairuschin, Viktor; Brand, Felix; Backer, Alexander; Drese, Klaus Stefan (2021)
Sensors 2021 (19).
DOI: 10.3390/s21196675
Open Access Peer Reviewed
Highly Sensitive Photoacoustic NO 2 Measurement System Based on an Optimized Ring-Shaped Resonant Cell
Fort, Ada; Panzardi, Enza; Vignoli, Valerio; Landi, Elia; Mugnaini, Marco; Drese, Klaus Stefan (2021)
Fort, Ada; Panzardi, Enza; Vignoli, Valerio; Landi, Elia; Mugnaini, Marco...
2021 IEEE International Workshop on Metrology for Industry 4.0 & IoT 2021, 583-587.
DOI: 10.1109/MetroInd4.0IoT51437.2021.9488532
Peer Reviewed
Actuation of Liquid Flow by Guided Acoustic Waves on Punched Steel Tapes with Protruding Loops
Backer, Alexander; Landskron, Johannes; Drese, Klaus Stefan; Lindner, Gerhard (2021)
Journal of Bionic Engineering 2021 (18), 534–547.
DOI: 10.1007/s42235-021-0051-x
Open Access Peer Reviewed
NO2 photoacoustic sensing system based on resonant cell and UV-LED sensor
Fort, Ada; Panzardi, Enza; Vignoli, Valerio; Landi, Elia; Mugnaini, Marco; Drese, Klaus Stefan (2021)
Fort, Ada; Panzardi, Enza; Vignoli, Valerio; Landi, Elia; Mugnaini, Marco...
2021 IEEE International Workshop on Metrology for Industry 4.0 & IoT (MetroInd4. 0&IoT) 2021, 583-587.
DOI: 10.1109/MetroInd4.0IoT51437.2021.9488532
Peer Reviewed
Excitation of Guided Acoustic Waves Using Ignition Sparks
Krempel, Sandro; Backer, Alexander; Dötzer, Florian; Drese, Klaus Stefan (2021)
SMSI 2021-Sensors and Instrumentation.
DOI: 10.5162/SMSI2021/A9.1
Open Access
Generating Homogeneous Gas Mixtures by Using Acoustic Waves
Krempel, Sandro; Seidel, N.; Tietze, Sabrina; Drese, Klaus Stefan (2021)
ACTUATOR; International Conference and Exhibition on New Actuator Systems and Applications 2021.
Ship Propulsion by Means of Acoustic Radiation
Backer, Alexander; Krempel, Sandro; Ritter, Frank; Tietze, Sabrina; Drese, Klaus Stefan (2021)
Backer, Alexander; Krempel, Sandro; Ritter, Frank; Tietze, Sabrina...
ACTUATOR, International Conference and Exhibition on New Actuator Systems and Applications 2021, Online 2021, 66 - 69.
Nowadays in almost all cases, the propulsion of ships is generated by mechanically moved propellers, which causes water flow and thrust. The disadvantage of this technology is the wear of the mechanical moving parts as well as the danger of the rotating parts in the water for example for living beings. The only alternative is still the sail or wind power.
In our approach the propulsion of a boat is generated without moving parts by means of ultrasonic waves emitted into
the water. In contrast to already existing experiments in which surface acoustic waves are conducted directly into the
water on piezoelectric substrates in order to generate a thrust, here the sound input takes place by piezoelectric transducers attached to the backside of non-piezoelectric material at the outer hull of the boat. A 3D printed model boat was
built and tested. In contrast to the previously published literature, the used electronic components and their operation for
the propulsion of the boat are described in detail. Sound generation and propagation are simulated in COMSOL
Modeling of acoustic enhanced electrochemical polishing processes.
Landskron, Johannes; Tietze, Sabrina; Wolf, Conrad R.; Drese, Klaus Stefan (2020)
Vortrag auf der Acoustofluidics 2020 2020.
Ultraschallbasierte Dehydratationsmessung zum unterstützenden Gesundheitsmonitoring
Roßteutscher, Immanuel; Ros, M.; Schwuchow, K.; Wolny, C.; Drese, Klaus Stefan (2020)
Jahresmagazin Mess- und Sensortechnik 2020/2021 2020, 42–44.
Characterization of aluminium oxid layers with a laser ultrasonic setup using the dispersion of Rayleigh waves
Brand, Felix; Singer, Ferdinand; Drese, Klaus Stefan (2019)
LUS4Metals. Linz, .
Lab on a Chip
Drese, Klaus Stefan (2019)
Wiener klinisches Magazin 2019 22 (4), 172–177.
DOI: 10.1007/s00740-019-0286-x
Machine Learning in der Qualitätskontrolle
Fairuschin, Viktor; Drese, Klaus Stefan (2019)
Jahresmagazin Mess- und Sensortechnik 2019, 36–38.
Nichtinvasive Detektion von Biofilmen in der Hausinstallation.
Tietze, Sabrina; Lasota, Sandra; Ebert, S.; Landskron, J.; Schwuchow, K.; Drese, Klaus Stefan (2019)
Tietze, Sabrina; Lasota, Sandra; Ebert, S.; Landskron, J.; Schwuchow, K....
Verivita Symposium Hygiene + Technik / Wetzlar 2019, 21–27.
Data transmission by guided acoustic waves
Ritter, Frank; Krempel, Sandro; Tietze, Sabrina; Backer, Alexander; Wolfschmitt, A.; Drese, Klaus Stefan (2018)
Ritter, Frank; Krempel, Sandro; Tietze, Sabrina; Backer, Alexander; Wolfschmitt, A....
Sensors and Measuring Systems; 19th ITG/GMA-Symposium, Nuremberg 2018, 602 - 605.
Conventional data transmission via cable or electromagnetic waves reaches their limits in harsh or hard-to-reach environments. For example in bore hole inspection, cables can break and electromagnetic waves cannot pass different earth layers. Actual studies showing that guided waves are a possible instrument for cable less data transmission. The known technique works with frequencies below 100 kHz for a wave propagating of long distances and known time delays. This concept limits the data transmission rate to e.g. 250 bit/s at a 2m long steel pipe. Other cable less developments are also known in so-called "wall to wall" communication by means of ultrasonic sound waves. Here, frequencies of 1 MHz are used to transmit data in the order of 550 bit/s through one wall with opposing transducers. In our approach we are using guided waves with a center frequency of 1 MHz. Furthermore a sweep mode is used instead of the pulse position modulation (PPM). Thus, it is possible to be independent of a known transmitter and receiver position and thereby the knowledge of the time delay. Thereby, in contrast to the already known technology it is possible to use a two-dimensional arbitrary surface for data communication. At a first experiment, a data transmission distance of 20 cm at a 3 mm glass plate was build. One single-phase transducer is used as transmitter and two different transducers as receiver to show the independence of position of the receiver. Wave reflections at the edges of the glass plate and dispersion of the guided wave could also be eliminated by the here used algorithm of identifying the biggest amplitude of the received signal. Thereby a transmission rate of 1,5 kBit/s with good SNR could be observed.
Monitoring of Soft Deposition Layers in Liquid-Filled Tubes with Guided Acoustic Waves Excited by Clamp-on Transducers
Tietze, Sabrina; Singer, F.; Lasota, Sandra; Ebert, Sandra; Landskron, Johannes; Schwuchow, Katrin; Drese, Klaus Stefan; Lindner, Gerhard (2018)
Tietze, Sabrina; Singer, F.; Lasota, Sandra; Ebert, Sandra; Landskron, Johannes...
Sensors 2018 18 (2), 526.
DOI: 10.3390/s18020526
Open Access Peer Reviewed
The monitoring of liquid-filled tubes with respect to the formation of soft deposition layers such as biofilms on the inner walls calls for non-invasive and long-term stable sensors, which can be attached to existing pipe structures. For this task a method is developed, which uses an ultrasonic clamp-on device. This method is based on the impact of such deposition layers on the propagation of circumferential guided waves on the pipe wall. Such waves are partly converted into longitudinal compressional waves in the liquid, which are back-converted to guided waves in a circular cross section of the pipe. Validating this approach, laboratory experiments with gelatin deposition layers on steel tubes exhibited a distinguishable sensitivity of both wave branches with respect to the thickness of such layers. This allows the monitoring of the layer growth.
Prof. Dr. Klaus Stefan Drese
Hochschule Coburg
Fakultät Angewandte Naturwissenschaften und Gesundheit (FNG)
Friedrich-Streib-Str. 2
96450 Coburg
T 09561317522 klaus.drese[at]hs-coburg.de
ORCID iD: 0000-0001-8829-1161