Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Standing Waves in a Cavity

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Competing Risk of Death and the Hypertension-Atrial Fibrillation Association in Diabetes.

American journal of hypertension·2026

Same author

Online axial drift measurement of ball screw ends using dual-wavelength microwave photonics.

Applied optics·2026

Same author

Small Extracellular Vesicles-Derived Circ6718 Unlocks Stromal Remodeling and Serves as a Biomarker in Gastric Cancer.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Same author

Exosomes as Pivotal Mediators of Tumor-Immune Communication: Implications for Immunotherapy and Liquid Biopsy.

International journal of nanomedicine·2026

Same author

Correlation Between Estimated Glomerular Filtration Rate and Asymptomatic Left Ventricular Diastolic Dysfunction in Patients With Type 2 Diabetes Mellitus.

AACE endocrinology and diabetes·2026

Same author

Hierarchical structure-guided high-dimensional multi-view clustering.

Journal of multivariate analysis·2026

Same journal

RETRACTED: Zhang et al. A Novel Framework for Reconstruction and Imaging of Target Scattering Centers via Wide-Angle Incidence in Radar Networks. <i>Sensors</i> 2025, <i>25</i>, 6802.

Sensors (Basel, Switzerland)·2026

Same journal

Enhancing Unsupervised Multi-Source Domain Adaptation for Person Re-Identification via Mixture of Experts and Graph-Based Relation.

Sensors (Basel, Switzerland)·2026

Same journal

Development of an Instrumented Glove for Palmar Pressure Assessment in Kayakers.

Sensors (Basel, Switzerland)·2026

Same journal

Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River.

Sensors (Basel, Switzerland)·2026

Same journal

Semi-Supervised Adversarial Learning Framework for Controller Area Network Bus Intrusion Detection.

Sensors (Basel, Switzerland)·2026

Same journal

Smart Optimization Method for Safety Signs in Innovative Manufacturing Environments Integrating Industrial Field IoT Sensors and Knowledge Graphs.

Sensors (Basel, Switzerland)·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Mar 2, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Published on: June 1, 2012

A Blade Tip Timing Method Based on a Microwave Sensor.

Jilong Zhang¹, Fajie Duan², Guangyue Niu³

¹State Key Laboratory of Precision Measuring Technology and Instruments; Tianjin University, Tianjin 300072, China. zhangjilong@tju.edu.cn.

Sensors (Basel, Switzerland)

|May 12, 2017

Summary

This summary is machine-generated.

A novel microwave sensor system accurately measures blade vibration in turbomachinery. This non-intrusive method overcomes limitations of traditional sensors in harsh environments, offering a promising alternative for blade tip timing.

Keywords:

blade tip timing blade vibration measurement microwave sensor

More Related Videos

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

Magnetic Tweezers for the Measurement of Twist and Torque

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

Related Experiment Videos

Last Updated: Mar 2, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Published on: June 1, 2012

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

Magnetic Tweezers for the Measurement of Twist and Torque

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

Area of Science:

Turbomachinery diagnostics
Sensor technology
Vibration analysis

Background:

Blade tip timing (BTT) is a non-intrusive technique for measuring blade vibration in turbomachinery.
Conventional BTT sensors (optical, eddy current, capacitance) face limitations in high-temperature or contaminated environments.
Microwave sensors present a viable alternative for BTT in challenging operational conditions.

Purpose of the Study:

To propose and evaluate a novel microwave sensor-based system for blade tip timing measurements.
To assess the system's capability for accurate vibration analysis and tip clearance measurement.
To demonstrate the system's suitability for environments where other sensors fail.

Main Methods:

A microwave sensor system utilizing a patch antenna probe for signal transmission and reception was developed.
Signal modeling and processing techniques were analyzed, employing a zero intermediate frequency structure.
The timing method incorporated signal edge detection and an auto-gain control circuit to mitigate tip clearance variations.

Main Results:

The proposed microwave BTT system demonstrated good accuracy in experimental validation.
The system successfully measured blade vibration and tip clearance.
Performance was comparable to established fiber optic BTT systems.

Conclusions:

The microwave sensor-based blade tip timing system is effective and accurate.
It offers a robust solution for turbomachinery monitoring in harsh environments.
This technology enhances diagnostic capabilities for blade health assessment.