Damage Behavior of Sintered Fiber Felts

Metals

Nicolas Lippitz¹  Joachim Rösler² 

[1] id="af1-metals-05-00591">Institute for Materials, TU Braunschweig, Langer Kamp 8, Braunschweig D-38106, Germany

关键词: porosity;    fibers;    tensile testing;    X-ray;    3D tomography;   

DOI  :  10.3390/met5020591

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland