Active fiber composites (AFC) made from piezoelectric fibers show promising potential, not only as actuators integrated into smart composites but also as sensors. Selected sensor properties of AFC elements are investigated with methods from acoustic emission sensor characterization and verification and from acousto-ultrasonic testing. Model experiments with AFC elements integrated in simple composite structures show that the various approaches for analysis of acousto-ultrasonic data yield indications of damage accumulation.
Barbezat, M., Brunner, A.J., Flüeler, P., Huber, C. and Kornmann, X.2004. ``Acoustic Emission Sensor Properties of Active Fiber Composite Elements Compared with Commercial Acoustic Emission Sensors,'' Sensors and Actuators A: Physical, 114(1):13—20.
2.
Barbezat, M., Brunner, A.J., Melnykowycz, M., Kornmann, X., Huber, Ch. and Flüeler, P.2004. ``Integrated Active Fiber Composite Elements for Structural Health Monitoring in Glass Fiber Reinforced Laminates,'' In: 2nd International Conference on High Performance Structures and Materials, Proceedings, WIT Press, Southampton, UK, pp. 13—18.
3.
Bent, A.A. and Hagood, N.W.1997. ``Piezoelectric Fibre Composites with Interdigitated Electrodes ,'' Journal of Intelligent Material Systems and Structures , 8(11):903—919.
4.
Bent, A.A., Hagood, N.W. and Rodgers, J.P.1995. ``Anisotropic Actuation with Piezoelectric Fiber Composites ,'' Journal of Intelligent Material Systems and Structures , 6(3):338—349.
5.
Castaings, M. and Hosten, B.2001. ``Lamb and SH Waves Generated and Detected by Air-coupled Ultrasonic Transducers in Composite Materials Plates,'' NDT&E International, 34(4):249—258.
6.
Grosse, C.U., Finck, F., Kurz, J.H. and Reinhardt, H.W.2004. ``Improvement of AE Technique using Wavelet Algorithms, Coherence Functions and Automatic Data Analysis,'' Construction and Building Materials, 18(3):203—213.
7.
Kornmann, X., Huber, C., Barbezat, M. and Brunner, A.J.2004. ``Active Fiber Composites: Sensors and Actuators for Smart Composite Structures,'' In: 11th European Conference on Composite Materials ECCM-11, Proceedings (CD), Rhodes , Greece, paper B047, pp. 1—9.
8.
Melnykowycz, M.M., Kornmann, X., Huber, C., Barbezat, M. and Brunner, A.J. (2006). ``Performance of Integrated Active Fiber Composites in Fiber Reinforced Epoyx Laminates,'' Smart Materials and Structures, 15(1):204—212.
9.
Miller, R.K., Hill, E.v.K. and McIntire, P. (eds), 2005. Nondestructive Testing Handbook, Volume 6 Acoustic Emission Testing, 3rd edn, American Society for Nondestructive Testing ASNT, Columbus, USA.
10.
Park, G., Sohn, H., Farrar, C.R. and Inman, D.J.2003. ``Overview of Piezoelectric Impedance-based Health Monitoring and Path Forward,'' The Shock and Vibration Digest, 35(6):451—463.
11.
Peairs, D.M., Park, G. and Inman, D.J.2004. ``Improving Accessibility of the Impedance-based Health Monitoring and Path Forward,'' Journal of Intelligent Materials Systems and Structures, 15(2):129—139.
12.
Sodano, H.A., Park, G. and Inman, D.J.2004. ``An Investigation into the Performance of Macro-fiber Composites for Sensing and Structural Vibration Applications,'' Mechanical Systems and Signal Processing, 18(3):683—697.
13.
Standard Guide for Acousto-ultrasonic Assessment of Composites, Laminates and Bonded Joints, E 1495, 2003. Nondestructive Test Methods, Vol. 03.03, American Society for Testing and Materials ASTM International , West Conshohocken, USA.
14.
Standard Guide for Determining the Reproducibility of Acoustic Emissions Sensor Response, E 976, 2003. Nondestructive Test Methods, Vol. 03.03, American Society for Testing and Materials ASTM International , West Conshohocken, USA.
15.
Staszewski, W.J., Boller, C. and Tomlinson, G.R. (eds), 2004. Health Monitoring of Aerospace Structures: Smart Sensor Technologies and Signal Processing, J. Wiley & Sons , Chichester, UK.
16.
Sundaresan, M.J., Goshal, A., Martin, N.W. and Schulz, M.J.2001. ``A Continuous Sensor to Measure Acoustic Waves in Plates ,'' Journal of Intelligent Material Systems and Structures , 12(1):41—56.
17.
Watanabe, M., Enoki, M. and Kishi, T.2003. ``Fracture Behaviour of Ceramic Coatings During Thermal Cycling Evaluated by Acoustic Emission Method using Laser Interferometers , Materials Science and Engineering A — Structural Materials and Properties, Microstructure and Processing, 359(1—2):368—374.
