Structural health monitoring using smart devices for damage detection

Recent decades have seen the rapid development of lead zirconate titanate (PZT) as a smart material in electro mechanical impedance (EMI) based structural health monitoring (SHM) technique. In this technique, the PZT transducer is attached to the host structure either by surface bonding or embedding...

Full description

Saved in:
Bibliographic Details
Main Author: Cai, Ke Xin
Other Authors: Soh Chee Kiong
Format: Final Year Project
Language:English
Published: 2015
Subjects:
Online Access:http://hdl.handle.net/10356/64423
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-64423
record_format dspace
spelling sg-ntu-dr.10356-644232023-03-03T17:13:58Z Structural health monitoring using smart devices for damage detection Cai, Ke Xin Soh Chee Kiong School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Structures and design Recent decades have seen the rapid development of lead zirconate titanate (PZT) as a smart material in electro mechanical impedance (EMI) based structural health monitoring (SHM) technique. In this technique, the PZT transducer is attached to the host structure either by surface bonding or embedding it inside where it acts as both sensor and actuator when subjected to electro mechanical field to result in a unique electromechanical signature. The attachment of transducer to the host structure is mostly accomplished by using adhesive bonding layers, which affect the sensitivity of the transducers to a great extent. However for effective sensitivity the transducer needs to have proper interaction with the host structure irrespective of whether there is a bonding layer or not for getting interrogating signature which serves as an indication of the structural health. In the recent past, researchers started exploring partial bonding layer or bonding layer free PZT transducer based EMI technique. In these cases, the attachment of transducer to the host structure is not by bonding adhesive but by mechanical means such as a thumb force, contact pressure, nut-bolt etc. These provide an alternative strategy where installing transducers becomes a problem. The present FYP focuses on the experimental sensitivity analysis of PZT transducers on the host structure using bonding layer free interaction, using magnet supports. Experimental study is backed by numerical investigations so as to aid the future researchers to explore the options of using bonding free PZT transducers for effective SHM. Root Mean Square Deviation (RMSD) based statistical analysis was conducted to validate experimental findings. Bachelor of Engineering (Civil) 2015-05-26T07:46:58Z 2015-05-26T07:46:58Z 2015 2015 Final Year Project (FYP) http://hdl.handle.net/10356/64423 en Nanyang Technological University 52 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Structures and design
spellingShingle DRNTU::Engineering::Civil engineering::Structures and design
Cai, Ke Xin
Structural health monitoring using smart devices for damage detection
description Recent decades have seen the rapid development of lead zirconate titanate (PZT) as a smart material in electro mechanical impedance (EMI) based structural health monitoring (SHM) technique. In this technique, the PZT transducer is attached to the host structure either by surface bonding or embedding it inside where it acts as both sensor and actuator when subjected to electro mechanical field to result in a unique electromechanical signature. The attachment of transducer to the host structure is mostly accomplished by using adhesive bonding layers, which affect the sensitivity of the transducers to a great extent. However for effective sensitivity the transducer needs to have proper interaction with the host structure irrespective of whether there is a bonding layer or not for getting interrogating signature which serves as an indication of the structural health. In the recent past, researchers started exploring partial bonding layer or bonding layer free PZT transducer based EMI technique. In these cases, the attachment of transducer to the host structure is not by bonding adhesive but by mechanical means such as a thumb force, contact pressure, nut-bolt etc. These provide an alternative strategy where installing transducers becomes a problem. The present FYP focuses on the experimental sensitivity analysis of PZT transducers on the host structure using bonding layer free interaction, using magnet supports. Experimental study is backed by numerical investigations so as to aid the future researchers to explore the options of using bonding free PZT transducers for effective SHM. Root Mean Square Deviation (RMSD) based statistical analysis was conducted to validate experimental findings.
author2 Soh Chee Kiong
author_facet Soh Chee Kiong
Cai, Ke Xin
format Final Year Project
author Cai, Ke Xin
author_sort Cai, Ke Xin
title Structural health monitoring using smart devices for damage detection
title_short Structural health monitoring using smart devices for damage detection
title_full Structural health monitoring using smart devices for damage detection
title_fullStr Structural health monitoring using smart devices for damage detection
title_full_unstemmed Structural health monitoring using smart devices for damage detection
title_sort structural health monitoring using smart devices for damage detection
publishDate 2015
url http://hdl.handle.net/10356/64423
_version_ 1759854785381531648