D2.2 - Strain Transmission Characteristics of Steel Substrates for Additive Sensor Manufacturing with Selective Laser Melting

Event
AMA Conferences 2017
2017-05-30 - 2017-06-01
Nürnberg, Germany
Band
Proceedings Sensor 2017
Chapter
D2 - Characterization of Printed Sensors and Methods
Author(s)
M. Hessinger, M. Kniepkamp, J. Lotichius, C. Hatzfeld, R. Werthschützky, E. Abele, M. Kupnik - Technische Universität Darmstadt (Germany)
Pages
449 - 449
DOI
10.5162/sensor2017/D2.2
ISBN
978-3-9816876-4-4
Price
free

Abstract

In this work we investigate the mechanical characteristics of steel substrates, manufactured with selective laser melting (SLM), for the use as deformation elements of force sensors. First, the influence of different build-up directions in the SLM process is validated with test geometries. The experiments show a significant anisotropy in terms of intrinsic tension and surface quality. Second, the strain transmission behavior of the SLM steel test sample (1.4542) is measured with a foil strain gauge using a 4-point flexure test. In comparison to conventionally rolled stainless steel test samples (RSS), both manufacturing techniques show deviations of approx. 3 % to ideal linear behavior.

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