Electro-mechanical impedance diagnostic is one of key structural health monitoring approaches in aerospace structures. Considerable number of studies have demonstrated its efficiency in monitoring bolted joints. This investigation focuses on effect of a bolted boundary on the electro-mechanical impedance response of the space structure. Many space vehicles incorporate cylindrical payloads featuring multiple plates connected with threaded rods. Position of nuts on the threaded rods determine layered structure of the payload. Because of the cylindrical configuration of the payload, internal layers are formed by circular plates bolted to the connection rods. The number of connection rods determines the number of bolted boundary conditions around plate’s circumference. In this case, the boundary of the plate is essentially a mix of bolted and free segments and is not associated with a classical boundary condition. It is suggested that this case may be represented by an elastic boundary conditions with boundary stiffnesses depending on torque applied to each bolted joint. Vibrations of a circular plate with indicated complex boundary conditions were studied in this contribution theoretically and experimentally. As a result of numerical studies, a range of stiffnesses was suggested to model the bolted boundary. An analytical expression for the electro-mechanical impedance of a circular plate was presented and was utilized in the calculation of the response of a circular plate with the complex boundary. Structural damage was modeled as deviation of the stiffness associated with the bolted joint. Experimental studies were carried out to validate results of theoretical investigations. Electro-mechanical impedance signatures of the circular plate with an attached piezoelectric active sensor were collected for different sets of boundary conditions representing theoretical scenarios. Effect of the compromised bolted joint on the electro-mechanical impedance response of the whole circular plate was explored and the analysis of changes due to different conditions of the bolted boundary was provided.
Skip Nav Destination
ASME 2017 International Mechanical Engineering Congress and Exposition
November 3–9, 2017
Tampa, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5844-8
PROCEEDINGS PAPER
Electro-Mechanical Impedance Assessment of a Bolted Circular Plate Element of a Space Structure
David Hunter,
David Hunter
New Mexico Institute of Mining & Technology, Socorro, NM
Search for other works by this author on:
Andrei Zagrai
Andrei Zagrai
New Mexico Institute of Mining & Technology, Socorro, NM
Search for other works by this author on:
David Hunter
New Mexico Institute of Mining & Technology, Socorro, NM
Andrei Zagrai
New Mexico Institute of Mining & Technology, Socorro, NM
Paper No:
IMECE2017-71203, V009T17A004; 8 pages
Published Online:
January 10, 2018
Citation
Hunter, D, & Zagrai, A. "Electro-Mechanical Impedance Assessment of a Bolted Circular Plate Element of a Space Structure." Proceedings of the ASME 2017 International Mechanical Engineering Congress and Exposition. Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Structural Health Monitoring and Prognosis. Tampa, Florida, USA. November 3–9, 2017. V009T17A004. ASME. https://doi.org/10.1115/IMECE2017-71203
Download citation file:
18
Views
0
Citations
Related Proceedings Papers
Damage Detection in Satellite Bolted Joints
SMASIS2008
Related Articles
Monitoring and Imaging of Bolted Steel Plate Joints Using Ultrasonic Guided Waves
ASME J Nondestructive Evaluation (February,2021)
A Reduced-Order Model for Loosening of Bolted Joints Subjected to Axial Shock Excitation
J. Appl. Mech (December,2019)
Detection of Damage in Space Frame Structures With L-Shaped Beams and Bolted Joints Using Changes in Natural Frequencies
J. Vib. Acoust (October,2013)
Related Chapters
Introduction
Computer Vision for Structural Dynamics and Health Monitoring
Case Study 10: Data Reconciliation
Engineering Optimization: Applications, Methods, and Analysis
Achievements, Challenges, and Opportunities
Computer Vision for Structural Dynamics and Health Monitoring