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This paper present a numerical model based on Timoshenko theory and spectral element method. The model is used for wave propagation analysis under environmental effects such as external loading, temperature and moisture. The model also incorporates open crack calculated using fracture mechanics laws. The aim of this paper is investigation of various features extensively used in application for damage detection such as wave packet amplitude, time of flight or peak of power spectral density. The study of these parameters is necessary for compensation of environmental influence on wave propagation which affects accuracy of damage identification.

AABEAM SPECTRAL FINITE ELEMENTS FOR MODELLING OF PROPAGATING WAVES IN COMPOSITE LAMINATES UNDER ENVIRONMENTAL EFFECTS