Sensitivity of Piezoelectric-Based Smart Interfaces to Structural Damage in Bolted Connections

This study presents a set of experimental and numerical investigations to study the sensitivity of the piezoelectric-based smart interface device to structural damage in a bolted connection. The study aims to identify the proper geometric sizes of smart interfaces for damage detection tasks. First,...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2019-08, Vol.19 (17), p.3670
Main Authors: Huynh, Thanh-Canh, Ho, Duc-Duy, Dang, Ngoc-Loi, Kim, And Jeong-Tae
Format: Article
Language:English
Subjects:
Adhesive bonding
bolted connection
Bolted joints
Bolts
Civil engineering
Damage detection
Design
Feasibility studies
geometric effect
Impedance
impedance method
impedance responses
Influence
lead zirconate titanate (PZT)
loosened bolt
Loosening
Parameter sensitivity
piezoelectric interface
piezoelectric sensors
Sensitivity
Sensors
Temperature effects
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Summary:This study presents a set of experimental and numerical investigations to study the sensitivity of the piezoelectric-based smart interface device to structural damage in a bolted connection. The study aims to identify the proper geometric sizes of smart interfaces for damage detection tasks. First, the fundamentals of the damage monitoring technique via lead zirconate titanate(PZT) interface is briefly described for a bolted connection. Second, a lab-scaled girder connection is selected as the test structure for the experimental investigation. PZT interface prototypes with varying geometric sizes are designed for the test connection. Under the bolt-loosening inflicted in the connection, the impedance responses of the PZT interfaces are analyzed to understand the effect of geometric parameters on the damage sensitivity of the impedance responses. Subsequently, the bolt-loosening detection capabilities of the PZT interfaces are comparatively evaluated for identifying the proper geometric sizes of the devices. Finally, a finite element model of the PZT interface-bolted connection system is established for the numerical investigation. The damage sensitivity of the numerical impedance responses is compared with the experimental results for the verification.
ISSN:1424-8220
1424-8220
DOI:10.3390/s19173670