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In this paper, the structural mode shapes extracted from the finite element model of a simply supported reinforced concrete beam are employed for damage identification using different types of wavelets. To start with, the parity of signals, wavelets, and their convolution, that is, wavelet transform properties, are verified. In light of the mathematical modeling complexity of modal frequency, which relates to the localization and quantification of damage in the reinforced concrete beam, the maximum curves based on multiresolution wavelet transform coefficient differences and the corresponding theoretical assumptions are described and analyzed. It is concluded that the maximum curve reaches a peak value at a specific scale for a specific case, based upon which, a new mode shape based algorithm and damage index are proposed for damage identification. The accuracy of localization as well as the sensitivity of quantification is further discussed. [ABSTRACT FROM AUTHOR]

[Display omitted] • The enhanced design of an array of the piezoelectric harvester was introduced. • (α) manage the problem of lowering the power between the resonance frequencies of the array. • The working bandwidth broadened by a factor of 26 compared to the conventional design. • The output power increased by a factor of 31 compared to the conventional design. • The effect of harvester parameters on the broadband was investigated. Converting the wasted ambient vibration to electric power, using a piezoelectric energy harvester, is a promising strategy for powering a sensor network for medical and industrial applications. The designed harvester must satisfy the wideband natural frequency of ambient vibration. Conventional array harvester generates peak power at the cantilever's resonance frequencies and low power between them. This challenge can be managed by controlling the inclination angle of the tip masses (α). It is observed that the range of α from 45 ° to 53.3 ° generates an output power of 2 - 3 m W in the frequency range of 1 9 to 29 H z. For the second mode shape, the output power has been measured to be 9 m W in the frequency range from 290 to 330 Hz. Comparing the proposed design with conventional designs, the working bandwidth broadband is increased by a factor of 26, and the output power is increased by a factor of 31. The proposed approach is modeled using finite element analysis and analytical methods. The FEM model is validated by experimental results. [ABSTRACT FROM AUTHOR]