Development of a Sensor Prototype and Geometry Based Parameters for the Characterization of Riblets Using Angle-resolved Measurement Techniques
| Autor: | Felix Ströer, Gerhard Stelzer, François M. Torner, Jörg Seewig |
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| Rok vydání: | 2017 |
| Předmět: |
Measure (data warehouse)
Engineering business.product_category business.industry media_common.quotation_subject 010401 analytical chemistry Rework Civil aviation Control engineering 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Airplane Characterization (materials science) Measuring principle General Earth and Planetary Sciences Quality (business) 0210 nano-technology business Function (engineering) Simulation General Environmental Science media_common |
| Zdroj: | Procedia CIRP. 63:8-13 |
| ISSN: | 2212-8271 |
| Popis: | The application of periodic microscale-structures, so-called riblets, is a medium-term goal intended to help airplane manufacturers in the modern civil aviation industry to reduce fuel consumption of aircrafts significantly. To reach this goal it is necessary to investigate the quality of riblets during the manufacturing process as well as during the operating time. Thus, it is essential to measure the degradation of those microscopic structures as a function of flight time in order to reach a decision on whether to replace or to rework the existing riblets. Tactile measurement principles are being disqualified for practical applications for several reasons. Instead, optical measurement principles are well-suited for this kind of application. The angle-resolved scattering light principle describes such an optical measurement method, which is suitable for measuring riblet structures and moreover can be virtually modeled. Based on theoretical pre-examinations of the physical measurement principle, a virtual sensor has been developed at the Institute for Measurement and Sensor-Technology at the University of Kaiserslautern to investigate riblet degradation. This was achieved within the framework of the International Research and Trainee Group 2057 (IRTG 2057), founded by the German Research Foundation (DFG). This virtual sensor forms the basis of a prototype, the so-called riblet sensor, which is currently being subjected to practical testing. A comparison between virtual and real measurement data is thus possible. To ultimately get meaningful results regarding the qualitative conditions of the riblets, so-called scatter distributions must be analyzed and interpreted. An unambiguous interpretation of scatter distributions presents difficulties. The development of applicable parameters based on virtual data analysis therefore is a significant aspect, which will be considered within this article. Furthermore detailed physical descriptions of the virtual sensor will be given. |
| Databáze: | OpenAIRE |
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