Details
| Original language | English |
|---|---|
| Pages (from-to) | 397-418 |
| Number of pages | 22 |
| Journal | Smart structures and systems |
| Volume | 14 |
| Issue number | 3 |
| Publication status | Published - 1 Sept 2014 |
Abstract
In this paper, a simple two-step method for structural vibration-based health monitoring for beam-like structures have been extended to plate-like structures with though-thickness cracks. Crack locations and severities of plate-like structures are detected using a hybrid approach. The interval wavelet transform is employed to extract crack singularity locations from mode shape and support vector regression (SVR) is applied to predict crack serviettes form crack severity detection database (the relationship of natural frequencies and crack serviettes) using several natural frequencies as inputs. Of particular interest is the natural frequencies estimation for cracked plate-like structures using Rayleigh quotient. Only the natural frequencies and mode shapes of intact structures are needed to calculate the natural frequencies of cracked plate-like structures using a simple formula. The crack severity detection database can be easily obtained with this formula. The hybrid method is investigated using numerical simulation and its validity of the usage of interval wavelet transform and SVR are addressed.
Keywords
- Crack detection, Interval wavelet transform, Natural frequency estimation, Plate-like structures, Rayleigh quotient, Support vector regression
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Computer Science(all)
- Computer Science Applications
- Engineering(all)
- Electrical and Electronic Engineering
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In: Smart structures and systems, Vol. 14, No. 3, 01.09.2014, p. 397-418.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A new method to detect cracks in plate-like structures with though-thickness cracks
AU - Xiang, Jiawei
AU - Nackenhorst, Udo
AU - Wang, Yanxue
AU - Jiang, Yongying
AU - Gao, Haifeng
AU - He, Yumin
N1 - Publisher Copyright: Copyright © 2014 Techno-Press, Ltd.
PY - 2014/9/1
Y1 - 2014/9/1
N2 - In this paper, a simple two-step method for structural vibration-based health monitoring for beam-like structures have been extended to plate-like structures with though-thickness cracks. Crack locations and severities of plate-like structures are detected using a hybrid approach. The interval wavelet transform is employed to extract crack singularity locations from mode shape and support vector regression (SVR) is applied to predict crack serviettes form crack severity detection database (the relationship of natural frequencies and crack serviettes) using several natural frequencies as inputs. Of particular interest is the natural frequencies estimation for cracked plate-like structures using Rayleigh quotient. Only the natural frequencies and mode shapes of intact structures are needed to calculate the natural frequencies of cracked plate-like structures using a simple formula. The crack severity detection database can be easily obtained with this formula. The hybrid method is investigated using numerical simulation and its validity of the usage of interval wavelet transform and SVR are addressed.
AB - In this paper, a simple two-step method for structural vibration-based health monitoring for beam-like structures have been extended to plate-like structures with though-thickness cracks. Crack locations and severities of plate-like structures are detected using a hybrid approach. The interval wavelet transform is employed to extract crack singularity locations from mode shape and support vector regression (SVR) is applied to predict crack serviettes form crack severity detection database (the relationship of natural frequencies and crack serviettes) using several natural frequencies as inputs. Of particular interest is the natural frequencies estimation for cracked plate-like structures using Rayleigh quotient. Only the natural frequencies and mode shapes of intact structures are needed to calculate the natural frequencies of cracked plate-like structures using a simple formula. The crack severity detection database can be easily obtained with this formula. The hybrid method is investigated using numerical simulation and its validity of the usage of interval wavelet transform and SVR are addressed.
KW - Crack detection
KW - Interval wavelet transform
KW - Natural frequency estimation
KW - Plate-like structures
KW - Rayleigh quotient
KW - Support vector regression
UR - http://www.scopus.com/inward/record.url?scp=84908390324&partnerID=8YFLogxK
U2 - 10.12989/sss.2014.14.3.397
DO - 10.12989/sss.2014.14.3.397
M3 - Article
AN - SCOPUS:84908390324
VL - 14
SP - 397
EP - 418
JO - Smart structures and systems
JF - Smart structures and systems
SN - 1738-1584
IS - 3
ER -