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Related Concept Videos

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

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 together...
Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Measurements of Strain01:27

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...
Deformation of a Beam under Transverse Loading01:15

Deformation of a Beam under Transverse Loading

Understanding beam deflection, particularly for indeterminate beams with overhanging segments and multiple concentrated loads, is crucial for ensuring structural integrity and functionality. The process begins with constructing an accurate free-body diagram, which helps identify the forces and moments acting on the beam. This diagram is vital for visualizing how bending moments vary along the beam's length, influencing its curvature.
The insights from the bending moment diagram extend to...
Deformations in a Transverse Cross Section01:21

Deformations in a Transverse Cross Section

When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...

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Related Experiment Video

Updated: Jul 6, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
06:56

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

Published on: May 23, 2017

Deformation-phase measurement of diffuse objects that have started nonrepeatable dynamic deformation.

M Adachi, J N Petzing, D Kerr

    Applied Optics
    |March 28, 2008
    PubMed
    Summary
    This summary is machine-generated.

    A novel technique captures continuous object deformation using arccosine operations to determine absolute phase changes. This method maps deformation across the entire object during dynamic processes.

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    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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    Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics
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    Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics

    Published on: April 16, 2017

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    Last Updated: Jul 6, 2026

    Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
    06:56

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    Published on: May 23, 2017

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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    Published on: July 5, 2016

    Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics
    14:14

    Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics

    Published on: April 16, 2017

    Area of Science:

    • Optical metrology
    • Deformation analysis

    Background:

    • Measuring dynamic deformation of diffuse objects is challenging.
    • Existing methods may struggle with continuous, real-time measurements.

    Purpose of the Study:

    • To introduce a new whole-field imaging technique for continuous deformation measurement.
    • To extract absolute phase changes from deforming diffuse objects.

    Main Methods:

    • Utilizing arccosine operations to obtain the absolute phase value.
    • Assuming phase continuity in local areas to determine phase sign.
    • Employing temporal-phase unwrapping for phase change mapping.

    Main Results:

    • Successful whole-field imaging of continuously deforming objects.
    • Accurate extraction of absolute deformation phase values.
    • Generation of deformation phase maps throughout the process.

    Conclusions:

    • The developed technique offers a robust method for real-time deformation analysis.
    • Arccosine-based phase extraction and temporal unwrapping are effective for dynamic objects.