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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aPh.D
099 _aCai01.13.05.Ph.D.2019.Sa.D
100 0 _aSara Abdelaziz Ibrahim Selmy
245 1 0 _aDamage detection of beams using wavelet transform /
_cSara Abdelaziz Ibrahim Selmy ; Supervised Sherif A. Mourad , Atef E. Bakry , Ahmed R. Desoki
246 1 5 _aالكشف عن التلف فى الكمرات باستخدام محول المويجات
260 _aCairo :
_bSara Abdelaziz Ibrahim Selmy ,
_c2019
300 _a74 P. :
_bcharts , facsimiles , photoghraphs ;
_c30cm
502 _aThesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Civil Engineering
520 _aThis research studies the detection of damages in beams using wavelet transform method. The damage detection is done through two steps. First, detecting the damage location is indicated by either the continuous wavelet transform or the discrete wavelet transform. Second, the damage severity is calculated by a proposed equation which depends on the detail wavelet coefficients. Four finite element beam models (fixed-fixed, hinged-hinged, cantilever, two spans) are studied. Two proposed procedures are used for localizing the damage which is based on the fundamental mode shapes. Some aspects that effect the assessment of damage detection such as wavelet family, signal to noise ratio (SNR) and no. of sensors are studied
530 _aIssued also as CD
653 4 _aBeams
653 4 _aDamage detection
653 4 _aWavelet transform
700 0 _aAhmed R. Desoki ,
_eSupervisor
700 0 _aAtef E. Bakry ,
_eSupervisor
700 0 _aSherif A. Mourad ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aShimaa
_eCataloger
942 _2ddc
_cTH
999 _c73952
_d73952