Vibration-based damage detection in beam structures with multiple cracks: modal curvature vs. modal flexibility methods

被引：76

作者：

Altunisik, Ahmet Can ^{[1
]}

Okur, Fatih Yesevi ^{[1
]}

Karaca, Sebahat ^{[1
]}

Kahya, Volkan ^{[1
]}

机构：

[1] Karadeniz Tech Univ, Dept Civil Engn, Fac Engn, Trabzon, Turkey

来源：

NONDESTRUCTIVE TESTING AND EVALUATION | 2019年 / 34卷 / 01期

关键词：

Damage detection; modal curvature; modal flexibility; beam; multiple cracks; IDENTIFICATION; FREQUENCY;

D O I：

10.1080/10589759.2018.1518445

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study presents damage localisation in steel cantilever beams including multiple cracks based on changes in the modal curvature and flexibility. Natural frequencies and corresponding mode shapes of circular-hollow-sectional and box-sectional steel cantilever beams are obtained by analytical and experimental models under six damage scenarios. Based on these data, the modal curvature and modal flexibility methods are employed to localise the cracks within the beams. Comparisons are made to show effectiveness of the methods in determination of crack locations.

引用

页码：33 / 53

页数：21

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