Claas Hartmann

Claas Hartmann
Technische Universität Darmstadt | TU · Institute of Electromechanical Design

Master of Science

About

10
Publications
1,316
Reads
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7
Citations
Additional affiliations
October 2018 - November 2019
Technische Universität Darmstadt
Position
  • Research Associate

Publications

Publications (10)
Data
A rotating view of the CAD-Data of the Experimental Setup in "Multipath Flow Metering of High-Velocity Gas Using Ultrasonic Phased-Arrays"
Article
Full-text available
In this work we combine a multipath ultrasonic gas flow meter (UFM) with an ultrasonic air-coupled phased-array. This allows complementing the advantages of a multipath UFM, i.e. higher accuracy and more robustness to irregular flow, with the extended velocity measuring range due to sound drift compensation via a phased-array. We created a 3D-print...
Article
Laser-based powder bed fusion as an additive manufacturing process allows the integration of sensors at any location within the manufactured part. This allows for manufacturing smart parts that can be integrated into complex structures for monitoring applications, as they can perform in-situ measurements. Especially, monitoring of force and torque...
Conference Paper
Full-text available
Ferroelectrets are piezoelectric polymers, typically cellular polymer foams that exhibit a large piezoelectric response. In this work, we present a biodegradable 3D printed ferroelectret using Fused Deposition Modeling (FDM). Even though the charging process of the ferroelectret is conducted at room temperature, the printed PLA exhibits good charge...
Article
Full-text available
Piezoelectrets are artificial ferroelectrics that are produced from non-polar air-filled porous polymers by symmetry breaking through high-voltage-induced Paschen breakdown in air. A new strategy for three-layer polymer sandwiches is introduced by separating the electrical from the mechanical response. A 3D-printed grid of periodically spaced therm...
Conference Paper
Full-text available
Ferroelectrets are typical cellular polymer foams that exhibit high flexibility and an excellent matching to air. Recently, biodegradable cellular polylactic acid (PLA) ferroelectrets have been introduced, exhibiting a large longitudinal piezoelectric coefficient. In this work, we present a combination of a PLA film and a printed PLA backplate usin...
Chapter
We present a disruptive method for manufacturing structure-integrated force sensors based on the LPBF process by inserting a strain sensing steel plate in the additive manufacturing process of the deformation element. In order to investigate the strain transmission from the printed part to the integrated steel plate, we built two prototypes which d...
Conference Paper
We present a 15 N nominal force sensor, manufactured with a disruptive method based on laser-based powder-bed-fusion. This additive manufacturing process enables the application-specific realization of a deformation element for a structural integrated sensor for condition monitoring applications. Manufacturing of the deformation element is done by...

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