Next Article in Journal
Underwater Localization System Combining iUSBL with Dynamic SBL in ¡VAMOS! Trials
Next Article in Special Issue
Noise Analysis of a Passive Resonant Laser Gyroscope
Previous Article in Journal
An Integrated IoT Architecture for Smart Metering Using Next Generation Sensor for Water Management Based on LoRaWAN Technology: A Pilot Study
Article

Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams

Faculty of Civil Engineering and Architecture, Opole University of Technology, ul. Prószkowska 76, 45-758 Opole, Poland
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(17), 4711; https://doi.org/10.3390/s20174711
Received: 17 July 2020 / Revised: 15 August 2020 / Accepted: 18 August 2020 / Published: 20 August 2020
(This article belongs to the Special Issue Rotation Rate Sensors and Their Applications)
The recent rapid development of rotation rate sensor technology opens new opportunities for their application in more and more fields. In this paper, the potential of rotational sensors for the modal analysis of full-scale civil engineering structural elements is experimentally examined. For this purpose, vibrations of two 6-m long beams made of ultra-high performance concrete (UHPC) were measured using microelectromechanical system (MEMS) rotation rate sensors. The beams were excited to vibrations using an impact hammer and a dynamic vibration exciter. The results of the experiment show that by using rotation rate sensors, one can directly obtain derivatives of mode shapes and deflection shapes. These derivatives of mode shapes, often called “rotational modes”, bring more information regarding possible local stiffness variations than the traditional transversal and deflection mode shapes, so their extraction during structural health monitoring is particularly useful. Previously, the rotational modes could only be obtained indirectly (e.g., by central difference approximation). Here, with the application of rotation rate sensors, one can obtain rotational modes and deflection shapes with a higher precision. Furthermore, the average strain rate and dynamic strain were acquired using the rotation rate sensors. The laboratory experiments demonstrated that rotation rate sensors were matured enough to be used in the monitoring and modal analyses of full-scale civil engineering elements (e.g., reinforced concrete beams). View Full-Text
Keywords: modal analysis; rotational mode; gyroscope; rotation rate sensors; UHPC; reinforced concrete beams; vibration modal analysis; rotational mode; gyroscope; rotation rate sensors; UHPC; reinforced concrete beams; vibration
Show Figures

Figure 1

MDPI and ACS Style

Bońkowski, P.A.; Bobra, P.; Zembaty, Z.; Jędraszak, B. Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams. Sensors 2020, 20, 4711. https://doi.org/10.3390/s20174711

AMA Style

Bońkowski PA, Bobra P, Zembaty Z, Jędraszak B. Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams. Sensors. 2020; 20(17):4711. https://doi.org/10.3390/s20174711

Chicago/Turabian Style

Bońkowski, Piotr A., Piotr Bobra, Zbigniew Zembaty, and Bronisław Jędraszak. 2020. "Application of Rotation Rate Sensors in Modal and Vibration Analyses of Reinforced Concrete Beams" Sensors 20, no. 17: 4711. https://doi.org/10.3390/s20174711

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop