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Related Concept Videos

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

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In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Related Experiment Video

Updated: Oct 28, 2025

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Published on: November 7, 2016

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Shape reconstruction based on a multicore optical fiber array with temperature self-compensation.

Weitao Zhu, Guangkai Sun, Yanlin He

    Applied Optics
    |July 15, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel temperature self-compensation algorithm for fiber-optic shape sensors. The developed algorithm significantly improves the accuracy of shape sensing in flexible structures by mitigating temperature-induced errors.

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    Area of Science:

    • Optoelectronics
    • Sensor Technology
    • Materials Science

    Background:

    • Fiber-optic shape sensors are susceptible to temperature variations, impacting their measurement accuracy.
    • Accurate shape sensing is crucial for monitoring and controlling flexible structures.

    Purpose of the Study:

    • To develop and validate a temperature self-compensation algorithm for fiber-optic shape sensors.
    • To enhance the precision of shape reconstruction in the presence of temperature fluctuations.

    Main Methods:

    • Calibration of a multicore fiber Bragg grating (FBG) sensor array to establish curvature-wavelength shift relationships.
    • Conducting variable-temperature experiments to determine FBG sensor temperature sensitivity.
    • Implementing a self-compensation algorithm using experimental temperature sensitivity data.
    • Reconstructing sensor shapes before and after temperature compensation under various bending conditions.

    Main Results:

    • The temperature self-compensation algorithm effectively reduced errors caused by temperature variations.
    • Post-compensation measurements showed an average coordinate error of less than 0.33 mm.
    • Maximum errors were reduced to below 5.61 mm, with relative errors less than 3.50%.

    Conclusions:

    • The developed temperature self-compensation algorithm significantly enhances the accuracy of fiber-optic shape sensing.
    • The algorithm demonstrates strong potential for real-world applications in flexible structures requiring precise shape monitoring.