Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Klaus Stefan Drese"'
Autor:
Daniel Frenzel, Oliver Blaschke, Christoph Franzen, Felix Brand, Franziska Haas, Alexandra Troi, Klaus Stefan Drese
Publikováno v:
Heritage, Vol 6, Iss 7, Pp 5030-5050 (2023)
Humidity, salt content, and migration in building materials lead to weathering and are a common challenge. To understand damage phenomena and select the right conservation treatments, knowledge on both the amount and distribution of moisture and salt
Externí odkaz:
https://doaj.org/article/c0870c6dfb964bccad8130d7b88c96a3
Autor:
Felix Brand, Klaus Stefan Drese
Publikováno v:
Sensors, Vol 24, Iss 5, p 1630 (2024)
Optoacoustics is a metrology widely used for material characterisation. In this study, a measurement setup for the selective determination of the frequency-resolved phase velocities and attenuations of longitudinal waves over a wide frequency range (
Externí odkaz:
https://doaj.org/article/88c07f5bf2114feab9ff4e0608a9fc77
Publikováno v:
Sensors, Vol 23, Iss 24, p 9892 (2023)
Monitoring tanks and vessels play an important part in public infrastructure and several industrial processes. The goal of this work is to propose a new kind of guided acoustic wave sensor for measuring immersion depth. Common sensor types such as pr
Externí odkaz:
https://doaj.org/article/b0e6be1284d6440396749cb1d8df399f
Publikováno v:
Sensors, Vol 23, Iss 13, p 5942 (2023)
The loosening of an artificial joint is a frequent and critical complication in orthopedics and trauma surgery. Due to a lack of accuracy, conventional diagnostic methods such as projection radiography cannot reliably diagnose loosening in its early
Externí odkaz:
https://doaj.org/article/f7eeedb3571f4b3a8d6adb3e6e77b4cc
Publikováno v:
Sensors, Vol 23, Iss 10, p 4616 (2023)
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
Externí odkaz:
https://doaj.org/article/29a707b0196b4c988729a4b361ebc565
Publikováno v:
Sensors, Vol 23, Iss 9, p 4282 (2023)
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
Externí odkaz:
https://doaj.org/article/7d1e40c134244d84b4e3245b2369d59f
Publikováno v:
Sensors, Vol 22, Iss 17, p 6648 (2022)
Guided acoustic waves are commonly used in domestic water meters to measure the flow rate. The accuracy of this measurement method is affected by factors such as variations in temperature and limescale deposition inside of the pipe. In this work, a n
Externí odkaz:
https://doaj.org/article/ff7f583ca1604e5ab4a1c55067b1f3c3
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 72:1-10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5bb8f0479721d3f5c3a6d9480415342
https://doi.org/10.1109/tim.2023.3244222
https://doi.org/10.1109/tim.2023.3244222
Publikováno v:
Sensors, Vol 21, Iss 19, p 6675 (2021)
Nondestructive evaluation of elastic properties plays a critical role in condition monitoring of thin structures such as sheets, plates or tubes. Recent research has shown that elastic properties of such structures can be determined with remarkable a
Externí odkaz:
https://doaj.org/article/666f9acf361e4bebb3d63950bfe880b3
Publikováno v:
Journal of Bionic Engineering. 18:534-547
In a biomimetic approach the feasibility of liquid flow actuation by vibrating protruding structures excited via guided acoustic waves is investigated. Inspired by periodically beating cilia the loop part of a punched metallic hook-and-loop tape with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae5fb1f6ff3d051e03484e978604401c
https://doi.org/10.1007/s42235-021-0051-x
https://doi.org/10.1007/s42235-021-0051-x