Innovation in Piezoceramic Based Structural Health Monitoring
type: CreativeWork
description: Recent structural failures in both developing and developed countries highlight the importance of structural health monitoring, which has the ability to provide early warning based on real time monitoring of the structure of interest. The versatile functions and low cost of piezoceramic material has demonstrated its capability as transducers in structural health monitoring. This dissertation investigated modeling and innovative applications using piezoceramic based smart aggregate transducers for health monitoring of various structures. A theoretical and experimental modeling study of piezoceramic based smart aggregates were firstly conducted. Fundamental equations of a smart aggregate were established and numerical simulations were performed. The resonance and anti-resonance frequencies of a smart aggregate sample were computed, and were later verified by experimental tests. Many structural failures were initiated by cracks. A chapter of this dissertation is devoted to crack detection using piezoceramic based transducers. Two types of structures, a pipeline and a concrete column, were investigated. For the pipeline structure, an active sensing system with distributed actuators and sensors detects the crack and monitor the crack development. For the concrete column, the cyclic crack open-close condition was determined by embedded smart aggregates using wavelet packet-based structural damage index. Steel plate reinforced concrete structures are increasingly used in civil engineering. However, the bonding between the steel plate and the concrete is not well studied nor well known. This dissertation investigated detection of bond slip between the steel plate and concrete using smart aggregates. With appropriate deployment of smart aggregates in concrete structure and steel plate surface, shear stress induced bond slip phenomenon was monitored in real time. The severity of debonding was also characterized using the proposed method. Concrete structures are often used as …
abstract: Recent structural failures in both developing and developed countries highlight the importance of structural health monitoring, which has the ability to provide early warning based on real time monitoring of the structure of interest. The versatile functions and low cost of piezoceramic material has demonstrated its capability as transducers in structural health monitoring. This dissertation investigated modeling and innovative applications using piezoceramic based smart aggregate transducers for health monitoring of various structures. A theoretical and experimental modeling study of piezoceramic based smart aggregates were firstly conducted. Fundamental equations of a smart aggregate were established and numerical simulations were performed. The resonance and anti-resonance frequencies of a smart aggregate sample were computed, and were later verified by experimental tests. Many structural failures were initiated by cracks. A chapter of this dissertation is devoted to crack detection using piezoceramic based transducers. Two types of structures, a pipeline and a concrete column, were investigated. For the pipeline structure, an active sensing system with distributed actuators and sensors detects the crack and monitor the crack development. For the concrete column, the cyclic crack open-close condition was determined by embedded smart aggregates using wavelet packet-based structural damage index. Steel plate reinforced concrete structures are increasingly used in civil engineering. However, the bonding between the steel plate and the concrete is not well studied nor well known. This dissertation investigated detection of bond slip between the steel plate and concrete using smart aggregates. With appropriate deployment of smart aggregates in concrete structure and steel plate surface, shear stress induced bond slip phenomenon was monitored in real time. The severity of debonding was also characterized using the proposed method. Concrete structures are often used as …
author: Kong, Qingzhao
language: eng
keywords: Structural health monitoring, Piezoceramic transducer, Smart aggregate, Active sensing approach, Structural damage index
date published: 2015-05
date modified: 2026-07-24T02:31:47Z
provider: University of Houston
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Houston

PropertyValue
property ID: Handle
value: http://hdl.handle.net/10657/3664