The possibility to combine the use of acoustic emission and thermal emission as real-time monitoring techniques on carbon-epoxy composites is the subject of this paper. Tensile tests are therefore performed, using a cross-head speed not too high so to enable a reliable detection of acoustic emission signals, but suitable also for the needs of the thermal emission technique,. The latter techniqu...

The Acoustic Emission of deformation twinning in Magnesium is investigated in this article. Single crystal testing with combined full field deformation measurements, as well as polycrystalline testing inside the scanning electron microscope with simultaneous monitoring of texture evolution and twin nucleation were compared to testing at the laboratory scale with respect to recordings of Acousti...

Piezoelectric transducers, long used in the generation and detection of ultrasonic waves, have more recently been the detector of choice for acoustic emission signals. Optical probing methods, however, have several important advantages for acoustic emission studies: (1) they have an inherent broad frequency response, free from mechanical resonances, (2) they do not interfere with the acoustic w...