EASEC-14 Special Session S1: Probabilistic system identification and health monitoring of structures Chair: T. Yin, Wuhan University, China Co-chair: H.F. Lam, City University of Hong Kong, China SUMMARY: The quality of randomness is inherent characteristic both of loads borne by structures and of the properties of the structure themselves. For better description and assessment of structural behavior and health status during the service period, probabilistic methods must be restored to, considering all aspects of uncertainty arisen from external loading, structural properties etc. This special session provides a forum for recent scholarly work dealing primarily with probabilistic and statistical approaches to problems of structural modal and model parameters identification, structural health monitoring and so on, encountered in diverse technical disciplines, such as aerospace, civil, mechanical and nuclear engineering. The special session aims to maintain a healthy balance between general computational techniques and problem-specific applied results, encouraging a fruitful exchange of ideas among disparate engineering specialties within the scope of probabilistic based health monitoring and system identification of structures. LIST OF PAPERS: Paper Info C.T. Ng, S.K. Au 1 Probabilistic analysis of uncertainty in input-output and output-only modal identification The University of Adelaide, Australia H.F. Lam, J. Hu, M.C. Chan 2 Damage detection of a standing seam metal roofing system utilizing ambient vibration data City University of Hong Kong, Hong Kong H.F. Lam, J.H. Yang 3 Application of MCMC-based Bayesian Model Updating for Structural Health Monitoring City University of Hong Kong, Hong Kong H.S. Li, D.B. Wen, Y. Wang 4 Identifying the probabilistic distribution of fatigue crack growth using maximum entropy principle Nanjing University of Aeronautics and Astronautics, China X.D. Xie, S.C. Zhang, L. Xiao, W.Z. Qu 5 Bolted looseness damage identification and localization using PZT array based on NI system Wuhan University, China F.L. Zhang 6 Bayesian model updating using ambient vibration data from multiple setups Tongji University, China