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Metals 2015, 5(2), 591-602; doi:10.3390/met5020591

Damage Behavior of Sintered Fiber Felts

Institute for Materials, TU Braunschweig, Langer Kamp 8, Braunschweig D-38106, Germany
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Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 1 October 2014 / Revised: 25 March 2015 / Accepted: 31 March 2015 / Published: 10 April 2015
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Abstract

The reduction of aircraft noise is important due to a rising number of flights and the growth of urban centers close to airports. During landing, a significant part of the noise is generated by flow around the airframe. To reduce that noise porous trailing edges are investigated. Ideally, the porous materials should to be structural materials as well. Therefore, the mechanical properties and damage behavior are of major interest. The aim of this study is to show the change of structure and the damage behavior of sintered fiber felts, which are promising materials for porous trailing edges, under tensile loading using a combination of tensile tests and three dimensional computed tomography scans. By stopping the tensile test after a defined stress or strain and scanning the sample, it is possible to correlate structural changes and the development of damage to certain features in the stress-strain curve and follow the damage process with a high spatial resolution. Finally, the correlation between material structure and mechanical behavior is demonstrated. View Full-Text
Keywords: porosity; fibers; tensile testing; X-ray; 3D tomography porosity; fibers; tensile testing; X-ray; 3D tomography
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lippitz, N.; Rösler, J. Damage Behavior of Sintered Fiber Felts. Metals 2015, 5, 591-602.

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