Non-destructive damage evaluation of adaptive materials

Blumenauer, H.; Dehne, G.; Michel, Fritz; Mook, Gerhard; Pohl, J.

doi:10.1504/ijmpt.1999.036273

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…To improve the performance and to predict the reliable lifetime of adaptive structures it is necessary to analyse and describe quantitatively the damage process as a complex microscale interaction between the embedded patches and the host structure. The major challenge is to create a suitable damage tolerance concept integrating a damage mechanics methodology combined with advanced nondestructive diagnostics [2].…”

Section: Introductionmentioning

confidence: 99%

Non-destructive characterization of smart CFRP structures

Mook¹,

Pohl²,

Michel³

2003

Smart Mater. Struct.

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Smart materials based on carbon-fibre-reinforced plastic (CFRP) with embedded PZT sensors and actuators are expected to be a favourite composite for vibration damping and noise reduction. Due to the wide variety of physical properties of the components, various damage mechanisms may reduce or even remove the sensing and actuating capabilities of the piezoceramic material. Comprehensive non-destructive characterization and integral health monitoring help to optimize the structure and its manufacturing and are essential prerequisites to ensure performance and availability of smart components during their lifetime. The first part of the paper presents high-resolution non-destructive imaging methods including microfocus x-rays, ultrasonics and eddy currents. These methods are used to characterize damage resulting from non-optimal manufacturing and external load. The second part is dedicated to newly developed imaging techniques using the active piezoceramics as transmitters of acoustic, electromagnetic and thermal fields. The third part focuses on health monitoring by impedance spectroscopy using the same piezoceramics as for vibration damping. Electromechanical finite-element modelling and experimental investigations of strip-shaped specimens have shown the close connection between mechanical properties and electrical impedance.

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Section: Introductionmentioning

confidence: 99%

Non-destructive characterization of smart CFRP structures

Mook¹,

Pohl²,

Michel³

2003

Smart Mater. Struct.

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Macrocrack Microcrack Interaction in Dissimilar Anisotropic Materials

Chen

2002

Advances in Conservation Laws and Energy Release Rates

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CFK-Piezokeramik-Verbunde zerstörungsfrei charakterisieren

Pohl

2004

Materials Testing

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KurzfassungAdaptive Strukturen sollen sich selbstregelnd unterschiedlichen Betriebs- bzw. Umgebungsbedingungen anpassen. Komposite aus kohlenstofffaserverstärktem Kunststoff (CFK) mit integrierten oder applizierten Piezokeramiken sind hierfür attraktive Werkstoffsysteme. Es werden Beispiele der zerstörungsfreien Charakterisierung bis zur Nutzung strukturinhärenter Möglichkeiten hierfür (health monitoring) vorgestellt.

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Non-destructive damage evaluation of adaptive materials

Cited by 3 publications

References 5 publications

Non-destructive characterization of smart CFRP structures

Non-destructive characterization of smart CFRP structures

Macrocrack Microcrack Interaction in Dissimilar Anisotropic Materials

CFK-Piezokeramik-Verbunde zerstörungsfrei charakterisieren

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