Issue 40

Frattura ed Integrità Strutturale, 40 (2017); International Journal of the Italian Group of Fracture I Table of Contents K. Kaklis, S. Mavrigiannakis, V. Saltas, F. Vallianatos, Z. Agioutantis Using acoustic emissions to enhance fracture toughness calculations for CCNBD marble specimens …... 1 K. N. Kaklis, S. P. Mavrigiannakis, Z. Agioutantis, E. K. Steiakakis, F. K. Stathogianni Experimental investigation of the mechanical properties of Alfas stone …………………………... 18 I. Stavrakas Acoustic emissions and pressure stimulated currents experimental techniques used to verify Kaiser effect during compression tests of Dionysos marble …………….………………………..…………… 32 E. D. Pasiou, D. Triantis Correlation between the electric and acoustic signals emitted during compression of brittle materials …….. 41 A. Kyriazopoulos Acoustic emissions and electric signal recordings, when cement mortar beams are subjected to three-point bending under various loading protocols …………………………………….………………… 52 Z.S. Metaxa, W. Neri, P. Poulin, N. D. Alexopoulos Strain monitoring of cement-based materials with embedded polyvinyl alcohol - carbon nanotube (PVA- CNT) fibers …………………………………………………………………………...… 61 S. K. Kourkoulis, I. Dakanali Pre-failure indicators detected by Acoustic Emission: Alfas stone, cement-mortar and cement-paste specimens under 3-point bending .......................................................................................................... 74 I. Doulamis, D. N. Perrea, P. E. Chatzistergos, A. S. Mitousoudis, S. K. Kourkoulis Exercise as a mean to reverse the detrimental effect of high-fat-diet on bone’s fracture characteristics …...... 85 M. Mentzini Structural interventions on the drums of the Parthenon’s north colonnade ………………………...… 95 Ch. F. Markides, E. D. Pasiou, S. K. Kourkoulis The multi-layered ring under parabolic distribution of radial stresses combined with uniform internal and external pressure ………………………………………………………………………….. 108 N.G. Pnevmatikos, G. A. Papagiannopoulos, G. D. Hatzigeorgiou Earthquake design for controlled structures .……................................................................................. 129