Zhou, Y.-LQian, XCao, HMagd, A.WCIVIL AND ENVIRONMENTAL ENGINEERING2020-10-232020-10-232017Zhou, Y.-L, Qian, X, Cao, H, Magd, A.W (2017). Damage detection in structures using frequency response functions ensemble with extended cosine based indicator. Journal of Physics: Conference Series 843 (1) : 12021. ScholarBank@NUS Repository. https://doi.org/10.1088/1742-6596/843/1/01202117426588https://scholarbank.nus.edu.sg/handle/10635/179494Although extensive investigations exist for structural damage detection, which often solely considers the stiffness reduction, or specific damage type like concrete spalling, this study aims to address a general novelty detection procedure for detecting the novelty, or so-called outlier from structural dynamic analysis with applying cosine based indicator in frequency response functions. This study also addresses a short review for the cosine indicator and modal assurance criterion, and their interrelation as well. The eight degree-of-freedom system is considered for the verification, and proves well performance in novelty detection. @ Published under licence by IOP Publishing Ltd.Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/FractureFrequency responseStructural analysisStructural dynamicsConcrete spallingDegree of freedomFrequency response functionsModal assurance criterionNovelty detectionStiffness reductionStructural damage detectionWell performanceDamage detectionConference Paper