Documents disponibles écrits par cet auteur

Detection of stiffness reductions in concrete decks with arbitrary damage shapes using incomplete dynamic measurements / Sang-Youl Lee in Journal of engineering mechanics, Vol. 134 N° 7 (Juillet 2008) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 134 N° 7 (Juillet 2008) . - pp.567-577 Titre : Detection of stiffness reductions in concrete decks with arbitrary damage shapes using incomplete dynamic measurements Type de document : texte imprimé Auteurs : Sang-Youl Lee, Auteur ; Taehyo Park, Auteur ; Voyiadjis, George Z., Auteur Année de publication : 2010 Article en page(s) : pp.567-577 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Damage  Dynamic  response  Finite  element  method  Measurement  Stiffness  Decks  Concrete. Résumé : A new refined nondestructive evaluation technique for concrete decks with arbitrary damage shapes is presented, and its utility in detecting the location and extent of the damage using only a single dynamic measurement signal is demonstrated. Six unknown parameters are considered to determine the damage distribution, which is a modified form of the bivariate Gaussian distribution function. Using a combination of the combined finite-element method (FEM) and the advanced uniform microgenetic algorithm, the various influences of different measurement locations on the damage detection are studied. In addition, the effect of noise is simulated in order to study the influence of the measurement errors and the uncertainty of the method. The sample studies demonstrate the excellence of the proposed method from the standpoints of its computation efficiency as well as its ability to investigate the complex distribution of an arbitrary stiffness reduction. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v134/i7/p567_s1?isAuthorized=no [article] Detection of stiffness reductions in concrete decks with arbitrary damage shapes using incomplete dynamic measurements [texte imprimé] / Sang-Youl Lee, Auteur ; Taehyo Park, Auteur ; Voyiadjis, George Z., Auteur . - 2010 . - pp.567-577. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 134 N° 7 (Juillet 2008) . - pp.567-577 Mots-clés : Damage  Dynamic  response  Finite  element  method  Measurement  Stiffness  Decks  Concrete. Résumé : A new refined nondestructive evaluation technique for concrete decks with arbitrary damage shapes is presented, and its utility in detecting the location and extent of the damage using only a single dynamic measurement signal is demonstrated. Six unknown parameters are considered to determine the damage distribution, which is a modified form of the bivariate Gaussian distribution function. Using a combination of the combined finite-element method (FEM) and the advanced uniform microgenetic algorithm, the various influences of different measurement locations on the damage detection are studied. In addition, the effect of noise is simulated in order to study the influence of the measurement errors and the uncertainty of the method. The sample studies demonstrate the excellence of the proposed method from the standpoints of its computation efficiency as well as its ability to investigate the complex distribution of an arbitrary stiffness reduction. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v134/i7/p567_s1?isAuthorized=no

Detection of stiffness reductions in concrete decks with arbitrary damage shapes using incomplete dynamic measurements / Sang-Youl Lee in Journal of engineering mechanics, Vol 134 n° 7 (Juillet 2008) 

Public ISBD [article]  in Journal of engineering mechanics > Vol 134 n° 7 (Juillet 2008) . - pp.567–577. Titre : Detection of stiffness reductions in concrete decks with arbitrary damage shapes using incomplete dynamic measurements Type de document : texte imprimé Auteurs : Sang-Youl Lee, Auteur ; Taehyo Park, Auteur ; Voyiadjis, George Z., Auteur Année de publication : 2013 Article en page(s) : pp.567–577. Note générale : Mécaniqua appliquée Langues : Anglais (eng) Mots-clés : Damage  Dynamic  response  Finite  element  method  Measurement  Stiffness  Decks  Concrete Résumé : A new refined nondestructive evaluation technique for concrete decks with arbitrary damage shapes is presented, and its utility in detecting the location and extent of the damage using only a single dynamic measurement signal is demonstrated. Six unknown parameters are considered to determine the damage distribution, which is a modified form of the bivariate Gaussian distribution function. Using a combination of the combined finite-element method (FEM) and the advanced uniform microgenetic algorithm, the various influences of different measurement locations on the damage detection are studied. In addition, the effect of noise is simulated in order to study the influence of the measurement errors and the uncertainty of the method. The sample studies demonstrate the excellence of the proposed method from the standpoints of its computation efficiency as well as its ability to investigate the complex distribution of an arbitrary stiffness reduction. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282008%29134%3A7%2856 [...] [article] Detection of stiffness reductions in concrete decks with arbitrary damage shapes using incomplete dynamic measurements [texte imprimé] / Sang-Youl Lee, Auteur ; Taehyo Park, Auteur ; Voyiadjis, George Z., Auteur . - 2013 . - pp.567–577. Mécaniqua appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol 134 n° 7 (Juillet 2008) . - pp.567–577. Mots-clés : Damage  Dynamic  response  Finite  element  method  Measurement  Stiffness  Decks  Concrete Résumé : A new refined nondestructive evaluation technique for concrete decks with arbitrary damage shapes is presented, and its utility in detecting the location and extent of the damage using only a single dynamic measurement signal is demonstrated. Six unknown parameters are considered to determine the damage distribution, which is a modified form of the bivariate Gaussian distribution function. Using a combination of the combined finite-element method (FEM) and the advanced uniform microgenetic algorithm, the various influences of different measurement locations on the damage detection are studied. In addition, the effect of noise is simulated in order to study the influence of the measurement errors and the uncertainty of the method. The sample studies demonstrate the excellence of the proposed method from the standpoints of its computation efficiency as well as its ability to investigate the complex distribution of an arbitrary stiffness reduction. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282008%29134%3A7%2856 [...]