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Marek Nowak (Cracow University of Technology) Maciej Panek (Wroclaw University of Technology) Ireneusz Baran (Cracow University of Technology) Krzysztof Konsztowicz (University of Bielsko-Biala)
Acoustic Emission (AE) was used to detect micro-crack initiation in carbon fiber reinforced composites in 4-point bending. Fiber debonding and breakage occurred simultaneously and were the first defects to initiate in the examined materials.
Pascal Reynaud (INSA de Lyon) Nathalie Godin (INSA de Lyon) Martin Picard (INSA de Lyon) Mohamed R'Mili (INSA de Lyon) Gilbert Fantozzi (INSA de Lyon)
This paper discusses the tensile resistance of an impact-damaged SiC/SiC based ceramic composite. As-received and impact-damaged specimens were subjected to static fatigue tests at 650°C and 450°C, with AE monitoring.
Anhadjeet Sandhu (University of Exeter) Timothy Dodwell (University of Exeter) Richard Butler (University of Bath)
The paper presents an automated algorithm which extracts wrinkle characteristics from B-Scan images of large composite parts typically from low resolution images. The method is validated using a synthetic wrinkle with known characteristics.
Wolfgang Adebahr (University of Stuttgart) Markus Rahammer (Institut für Kunststofftechnik) Ronny Sachse (University of Stuttgart) Peter Middendorf (University of Stuttgart) Marc Kreutzbruck (University of Stuttgart)
This paper includes non-destructive crack growth monitoring via air-coupled ultrasound and thermography.
Sandra Gschoßmann (Johannes Kepler University Linz) Yingjun Zhao (Johannes Kepler University Linz) Martin Schagerl (Johannes Kepler University Linz)
This contribution presents a simple and low-cost possibility to build a stand-alone data acquisition device to collect boundary voltage responses for EIT evaluation as a potential application for SHM using piezoresistive thin film sensors.
Andrea Bernasconi (Politecnico di Milano) Michele Carboni (Politecnico di Milano) Riccardo Galeazzi (Politecnico di Milano) Andrea Gianneo (Politecnico di Milano)
In this work, the Optical Backscatter Reflectometry (OBR) distributed sensing technique is used to monitor fatigue crack growth in composite adhesive bonded joints. Results are referenced with measurements by phased array ultrasonic testing.
In this study, carbon nanotube (CNTs) polymer nanocomposites (CNT-PNCs) as a smart paint were used as a strain sensor to follow the mechanical deformations of the structures.
William Caster (Univ. Bourgogne Franche-Comté) N. Massé (Univ. Bourgogne Franche-Comté) Jérôme Rousseau (Univ. Bourgogne Franche-Comté) Stephane Fontaine (Univ. Bourgogne Franche-Comté)
This study is the analysis of the acoustic radiation caused by an impact on a composite structure and the use of signal entropy for non-contact detection and evaluation of the induced damage.
Sebastian Eckel (Arts et Metiers ParisTech) Fodil Meraghni (Arts et Métiers ParisTech) Pascal Pomarede (Arts et Metiers ParisTech) Nico Felicien Declercq (Georgia Tech Lorraine – G.W. Woodruff School of Mechanical Engineering)
The work describes an acoustic method based on the damaged material’s increased nonlinear transmission behavior. Consequently, the nonlinearity indicates the damage. The aim is to analyse and quantify the nonlinearity to measure the damage severity.
Till Augustin (Technische Universität Hamburg-Harburg) Hauke H. Langner (Helmut-Schmidt-Universität, Hamburg) Vico Haverkamp (Helmut-Schmidt-Universität, Hamburg) Bodo Fiedler (Technische Universität Hamburg-Harburg)
Conductive paths of silver nanoparticle based ink are ink-jet printed on CFRP. Electrical resistance measurements allow for in situ detection of delaminations and surface cracks by measuring through the material and along the printed paths.
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