Title :
MEMS pressure sensors embedded into fiber composite airfoils
Author :
Schwerter, Martin ; Leester-Schadel, Monika ; Buttgenbach, Stephanus ; Dietzel, Andreas ; Behr, Christian ; Sinapius, Michael ; Wierach, Peter
Author_Institution :
Inst. of Microtechnol., Tech. Univ. Braunschweig, Braunschweig, Germany
Abstract :
The paper describes the integration of pressure sensors into fiber composite in order to obtain flow sensing airfoils to be used in future aircrafts. First, the sensor design and working principle is described, followed by an embedding procedure for damage-free integration. Here the sensors are faced to stresses by vacuum and curing during the embedding process into fiber-reinforced plastic. The mechanical characteristics and the influence of external mechanical stresses on the integrated sensor are further investigated. Finally, a sensor design unsusceptible to external mechanical stresses parallel to the surface of the airfoil is proposed and verified by tensile stress tests.
Keywords :
aerospace components; aircraft; fibre reinforced plastics; intelligent sensors; microsensors; pressure sensors; stress analysis; tensile testing; MEMS pressure embedded sensor; aircraft; curing; damage-free integration; fiber composite airfoil; fiber-reinforced plastic; flow sensing; integrated sensor; mechanical stress; tensile stress testing; Mechanical sensors; Optical fiber sensors; Piezoresistive devices; Strain; Tensile stress; MEMS; embedding; fiber composite; influence of external stress; pressure sensor; tensile stress test;
Conference_Titel :
SENSORS, 2014 IEEE
Conference_Location :
Valencia
DOI :
10.1109/ICSENS.2014.6985052
