Multi-physical field guided wave simulation for circular concrete-filled steel tubes coupled with piezoelectric patches considering debonding defects

The active interface debonding detection for concrete-filled steel tubes (CFSTs) using Piezoelectric Lead Zirconate Titanate (PZT) patches has been proposed and experimentally studied in recent years. In order to further investigate the guided wave propagation and the response of embedded PZT sensor...

Full description

Saved in:
Bibliographic Details
Published in:International journal of solids and structures 2017-09, Vol.122-123, p.25-32
Main Authors: Xu, Bin, Chen, Hongbing, Mo, Y.-L., Chen, Xuemin
Format: Article
Language:English
Subjects:
Chemical compounds
Circular Concrete-Filled Steel Tube (CCFST)
Computer simulation
Coupling
Debonding
Defects
Electric potential
Guided wave propagation
Interfacial debonding
Lead zirconate titanates
Mathematical models
Multi-physical field coupling model
Numerical analysis
Patches (structures)
Piezoelectric ceramics
Piezoelectricity
Propagation
Quantitative analysis
Response time
Sensitivity analysis
Simulation
Steel
Steel columns
Steel tubes
Sweep frequency
Wave propagation
Wavelet analysis
Wavelet packet analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The active interface debonding detection for concrete-filled steel tubes (CFSTs) using Piezoelectric Lead Zirconate Titanate (PZT) patches has been proposed and experimentally studied in recent years. In order to further investigate the guided wave propagation and the response of embedded PZT sensor, transient dynamic analysis on multi-physical field coupling models composed of surface-mounted PZT actuator, embedded PZT sensor and a circular CFST specimen considering the coupling effect between the PZT patches and CFST member and the influence of interface debonding defects is carried out numerically. The guided wave propagation within the CFST-PZT coupling system without and with interfacial debonding defects under single period impulse signal is simulated and compared. The voltage response time history of the embedded PZT sensor in coupling models under both sinusoidal and sweep frequency sinusoidal excitations are simulated as an alternative solver. Numerical results demonstrate that interface debonding leads to changes in guided wave propagation path, traveling time and the PZT sensor response. The sensitivity of a quantitative evaluation index called as the normalized wavelet packet energy of the output voltage of embedded PZT sensor to the initiation of interface debonding defect and its length and depth is illustrated.
ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2017.05.040