Piezoelectric Systems for Force Sensing and Tunable Dynamics

Simple item page
dc.contributor.advisorPark, Simon
dc.contributor.advisorLee, Jihyun
dc.contributor.authorRezvani, Sina
dc.contributor.committeememberKim, Keekyoung
dc.contributor.committeememberXue, Deyi
dc.date2024-05
dc.date.accessioned2024-04-08T14:44:34Z
dc.date.available2024-04-08T14:44:34Z
dc.date.issued2024-04-03
dc.description.abstractThe measurement and suppression of vibrations are crucial for modern-day devices and structures. Piezoelectric materials stand out as exceptional for vibration measurement and control due to their rapid response time. Among these materials, lead zirconate titanate (PZT) is particularly favoured for its high piezoelectric coefficients and stiffness. However, the manufacturing process of PZT can be optimized to reduce both time and energy consumption. Designing and implementing measurement systems incorporating PZT elements contributes to cost reduction and increased accuracy. Moreover, piezoelectric materials not only serve for vibration measurement but can also function as elements for active, and semi-active vibration control. Notably, they possess the capability to perform both sensing and actuation functions simultaneously, a technique known as self-sensing actuation. In this study, the hybrid microwave sintering of PZT and PZT/CNT samples is explored, investigating the effect of incorporating carbon nanotubes (CNTs) on microwave absorption. Furthermore, the effect of adding CNTs and adjusting microwave power on microstructures, and mechanical and electrical properties are investigated. A comparative analysis with conventional sintering is also conducted. A thermal modelling based on FEM is introduced to simulate the temperature variations throughout the sintering process. A vise-based force sensor system is introduced for simultaneous measurement of cutting and clamping forces in milling operations. By integrating PZT piezoelectric sensors and strain gauges, the system achieves accurate force measurement in terms of DC and AC components. Experiments are conducted to validate the effectiveness of the setup. For the purpose of vibration suppression and tuning dynamics, a friction damper based on the discrete layer jamming concept is developed, utilizing a piezoelectric actuator to change the normal force. The study conducts an in-depth exploration of the behaviour of piezoelectric friction dampers under various loading conditions. The investigation covers factors such as load stiffness, preload settings, and the damper’s response in free and forced vibrations, including flexural and axial cyclic loads. The potential applications of the damper are also highlighted.
dc.identifier.citationRezvani, S. (2024). Piezoelectric systems for force sensing and tunable dynamics (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.urihttps://hdl.handle.net/1880/118382
dc.identifier.urihttps://doi.org/10.11575/PRISM/43224
dc.language.isoen
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgary
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectPiezoelectricity
dc.subjectPZT
dc.subjectMicrowave Sintering
dc.subjectForce Measurement
dc.subjectPiezoelectric Friction Damper
dc.subjectLayer Jamming
dc.subject.classificationApplied Mechanics
dc.subject.classificationEngineering--Mechanical
dc.subject.classificationMaterials Science
dc.titlePiezoelectric Systems for Force Sensing and Tunable Dynamics
dc.typedoctoral thesis
thesis.degree.disciplineEngineering – Mechanical & Manufacturing
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.thesis.accesssetbystudentI require a thesis withhold – I need to delay the release of my thesis due to a patent application, and other reasons outlined in the link above. I have/will need to submit a thesis withhold application.
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
ucalgary_2024_rezvani_sina.pdf
Size:
12.68 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.64 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Restricted Theses and Dissertations