C. Boller, F. K. Chang, and Y. Fujino, Encyclopedia of Structural Health Monitoring, 2009.
DOI : 10.1002/9780470061626

L. Wang and F. G. Yuan, Active damage localization technique based on energy propagation of Lamb waves, Smart Structures and Systems, vol.3, issue.2, pp.201-217, 2007.
DOI : 10.12989/sss.2007.3.2.201

J. Staszewski, S. Mahzan, and R. Traynor, Health monitoring of aerospace composite structures ??? Active and passive approach, Composites Science and Technology, vol.69, issue.11-12, pp.1678-1685, 2009.
DOI : 10.1016/j.compscitech.2008.09.034

A. Shelke, T. Kundu, U. Amjad, K. Hahn, and W. Grill, Mode-selective excitation and detection of ultrasonic guided waves for delamination detection in laminated aluminum plates, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol.58, issue.3, pp.567-577, 2011.
DOI : 10.1109/TUFFC.2011.1839

P. Malinowskia, T. Wandowskia, and W. Ostachowicz, Damage detection potential of a triangular piezoelectric configuration, Mechanical Systems and Signal Processing, vol.25, issue.7, pp.2722-2732, 2011.
DOI : 10.1016/j.ymssp.2011.02.010

L. Y. Yu, V. Giurgiutiu, J. J. Wang, and Y. J. Shin, Corrosion detection with piezoelectric wafer active sensors using pitch-catch waves and cross-time-frequency analysis, Structural Health Monitoring, vol.11, issue.1, pp.83-93, 2012.
DOI : 10.1177/1475921711406580

L. Qiu, M. L. Liu, X. L. Qing, and S. F. Yuan, A quantitative multidamage monitoring method for large-scale complex composite, Structural Health Monitoring, vol.12, issue.3, pp.183-196, 2013.
DOI : 10.1177/1475921713479643

H. Sohn, Effects of environmental and operational variability on structural health monitoring, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol.31, issue.168, pp.539-560, 2007.
DOI : 10.1098/rsta.2006.1935

I. Lopez and N. Sarigul-klijn, A review of uncertainty in flight vehicle structural damage monitoring, diagnosis and control: Challenges and opportunities, Progress in Aerospace Sciences, pp.247-273, 2010.
DOI : 10.1016/j.paerosci.2010.03.003

Q. Wang and S. F. Yuan, Baseline-free Imaging Method based on New PZT Sensor Arrangements, Journal of Intelligent Material Systems and Structures, vol.20, pp.1663-1673, 2009.

H. Sohn, Reference-free crack detection under varying temperature, KSCE Journal of Civil Engineering, vol.58, issue.15, pp.1395-1404, 2011.
DOI : 10.1007/s12205-011-1271-0

H. J. Lim, H. Sohn, C. M. Yeum, and J. M. Kim, Reference-free damage detection, localization,and quantification in composites, The Journal of the Acoustical Society of America, vol.133, pp.3838-3845, 2013.

K. K. Nair, A. S. Kiremidjian, and K. H. Law, Time series-based damage detection and localization algorithm with application to the ASCE benchmark structure, Journal of Sound and Vibration, vol.291, issue.1-2, pp.349-368, 2006.
DOI : 10.1016/j.jsv.2005.06.016

K. Worden and G. Manson, The application of machine learning to structural health monitoring, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol.259, issue.1851, pp.515-552, 2007.
DOI : 10.1098/rsta.2006.1938

C. K. Oh and H. Sohn, Damage diagnosis under environmental and operational variations using unsupervised support vector machine, Journal of Sound and Vibration, vol.325, issue.1-2, pp.224-239, 2009.
DOI : 10.1016/j.jsv.2009.03.014

J. A. Bilmes, A Gentle Tutorial of the Em Algorithm and Its Application to Parameter Estimation for Gaussian Mixture and Hidden Markov Models, International Computer Science Institute, 1998.

S. Banerjee, X. L. Qing, S. Beard, and F. K. Chang, Prediction of Progressive Damage State at the Hot Spots using Statistical Estimation, Journal of Intelligent Material Systems and Structures, vol.21, issue.6, pp.595-605, 2010.
DOI : 10.1177/1045389X10361632

J. E. Michaels and T. E. Michaels, Detection of structural damage from the local temporal coherence of diffuse ultrasonic signals, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol.52, issue.10, pp.1769-1782, 2005.
DOI : 10.1109/TUFFC.2005.1561631

Z. Q. Su and L. Ye, Identification of Damage Using Lamb Waves: From Fundamentals to Applications, Lecture Notes in Applied and Computational Mechanics, vol.48, 2009.
DOI : 10.1007/978-1-84882-784-4

L. Qiu and S. F. Yuan, On development of a multi-channel PZT array scanning system and its evaluating application on UAV wing box, Sensors and Actuators A: Physical, vol.151, issue.2, pp.220-230, 2009.
DOI : 10.1016/j.sna.2009.02.032