Ein Sensorkonzept auf der Basis piezoelektrischer PVDF-Folien zur Messung bruchmechanischer Beanspruchungsgrößen
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Kurzfassung
Ein neues Sensorkonzept zur Überwachung von Ermüdungsrisswachstum in technischen Strukturen wird vorgestellt. Damit können unter Betriebsbelastungen fortlaufend Daten zur Position der Rissspitze und zu den bruchmechanischen Beanspruchungsgrößen gemessen werden. Die erforderlichen Informationen liefert eine piezoelektrische Polymerfolie, die mit der Oberfläche der zu überwachenden Struktur fest verbunden ist. Aus den an einem diskreten Sensorfeld abgegriffenen elektrischen Potenzialen werden in Verbindung mit der Lösung des nichtlinearen inversen Problems die K-Faktoren sowie Risskoordinaten berechnet.
Abstract
A new sensor concept for fatigue crack growth monitoring in technical structures is presented. It allows the in-situ determination of the position of the crack tip as well as the fracture mechanical parameters. The required data are obtained from a piezoelectric polymer film, which is attached to surface of the structure. The stress intensity factors and the crack tip position are calculated from electrical potential obtained from sensor array by solving the non-linear inverse problem.
Literatur
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© 2010, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Ein verbessertes Verfahren zur Lebensdauerabschätzung mittels linearer Schadensakkumulation
- Ein Sensorkonzept auf der Basis piezoelektrischer PVDF-Folien zur Messung bruchmechanischer Beanspruchungsgrößen
- Parametric (Non)-Variance of the Mid-Regime Fatigue Crack Propagation in an Aluminium Alloy AA6056-T6
- Effects of Shielding with Various Hydrogen-Argon Mixtures on Supermartensitic Stainless Steel TIG Welds
- Microstructural and Fractographical Studies on Quenched and Tempered Armor Steels
- Hydro-Abrasive Erosion Resistance of C45 Steel in Different Heat-Treated States on a Designed Wear Test Apparatus
- A new approach to the kinematic analysis of universal joints
- Vorschau/Preview
- Vorschau
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Ein verbessertes Verfahren zur Lebensdauerabschätzung mittels linearer Schadensakkumulation
- Ein Sensorkonzept auf der Basis piezoelektrischer PVDF-Folien zur Messung bruchmechanischer Beanspruchungsgrößen
- Parametric (Non)-Variance of the Mid-Regime Fatigue Crack Propagation in an Aluminium Alloy AA6056-T6
- Effects of Shielding with Various Hydrogen-Argon Mixtures on Supermartensitic Stainless Steel TIG Welds
- Microstructural and Fractographical Studies on Quenched and Tempered Armor Steels
- Hydro-Abrasive Erosion Resistance of C45 Steel in Different Heat-Treated States on a Designed Wear Test Apparatus
- A new approach to the kinematic analysis of universal joints
- Vorschau/Preview
- Vorschau