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

Measurements of Strain

Measurements of Strain

Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...

Design Example: Strain Gauge Bridge or Wheatstone Bridge

Design Example: Strain Gauge Bridge or Wheatstone Bridge

The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...

You might also read

Related Articles

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

Sort by

Same author

Control of the characteristics of a long-period grating by cladding etching.

Applied optics·2008

Same author

Simultaneous measurement of strain and temperature by use of a single fiber Bragg grating written in an erbium:ytterbium-doped fiber.

Applied optics·2008

Same author

Simultaneous measurement of strain and temperature by use of a single-fiber Bragg grating and an erbium-doped fiber amplifier.

Applied optics·2008

Same author

Fiber Bragg grating temperature sensor with controllable sensitivity.

Applied optics·2008

Same author

Angular and Speckle Multiplexing of Photorefractive Holograms by use of Fiber Speckle Patterns.

Applied optics·2008

Same author

Recirculating fiber delay-line filter with a fiber bragg grating.

Applied optics·2008

Search research articles

Related Experiment Video

Updated: Jul 7, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

Dynamic-strain measurement with dual-grating fiber sensor.

M Song, S B Lee, S S Choi

|February 15, 2008

Summary

This study introduces a novel dual-grating sensor for precise, temperature-insensitive strain measurements. It achieved high resolution for dynamic strain perturbations, demonstrating feasibility in various configurations.

Area of Science:

Optical Engineering
Materials Science
Metrology

Background:

Accurate strain measurement is crucial for structural health monitoring and material analysis.
Existing methods often struggle with temperature-induced errors and dynamic strain detection.
Developing robust sensors for dynamic strain perturbations is an ongoing challenge.

Purpose of the Study:

To develop and validate a dual-grating sensor head for temperature-insensitive strain measurement.
To assess the sensor's capability in measuring fast-varying strain perturbations.
To demonstrate the feasibility of dynamic strain measurement using a static strain configuration.

Main Methods:

Utilized a dual-grating sensor head designed for temperature insensitivity.

More Related Videos

Production of a Strain-Measuring Device with an Improved 3D Printer

Production of a Strain-Measuring Device with an Improved 3D Printer

Published on: January 30, 2020

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Related Experiment Videos

Last Updated: Jul 7, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

Production of a Strain-Measuring Device with an Improved 3D Printer

Production of a Strain-Measuring Device with an Improved 3D Printer

Published on: January 30, 2020

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Employed a Mach-Zehnder interferometer technique for high-resolution measurements.

Applied a 200-Hz dynamic strain input to test sensor performance.

Main Results:

Achieved a root-mean-square (rms) resolution of approximately 0.1 microstrain (µε).
Successfully measured fast-varying strain perturbations with high accuracy.
Demonstrated the sensor's capability to measure dynamic strain within a static strain measurement setup.

Conclusions:

The dual-grating sensor head offers a viable solution for precise, temperature-insensitive strain monitoring.
The Mach-Zehnder interferometer technique enables high-resolution dynamic strain measurement.
This technology holds potential for advanced applications in structural monitoring and material science.