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Related Concept Videos

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 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...
Transformation of Plane Strain01:12

Transformation of Plane Strain

When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
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...

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Related Experiment Video

Updated: May 18, 2026

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

A novel method for visualising and quantifying through-plane skin layer deformations.

L-C Gerhardt1, J Schmidt, J A Sanz-Herrera

  • 1Soft Biomechanics and Tissue Engineering, Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.

Journal of the Mechanical Behavior of Biomedical Materials
|October 4, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces a new imaging method to analyze skin deformation, revealing varying strain levels between the epidermis and dermis. This technique quantifies skin mechanics for improved biomechanical models.

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Layer Microdissection of Tricuspid Valve Leaflets for Biaxial Mechanical Characterization and Microstructural Quantification
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Layer Microdissection of Tricuspid Valve Leaflets for Biaxial Mechanical Characterization and Microstructural Quantification

Published on: February 10, 2022

Related Experiment Videos

Last Updated: May 18, 2026

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

Flat Mount Imaging of Mouse Skin and Its Application to the Analysis of Hair Follicle Patterning and Sensory Axon Morphology
13:58

Flat Mount Imaging of Mouse Skin and Its Application to the Analysis of Hair Follicle Patterning and Sensory Axon Morphology

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Layer Microdissection of Tricuspid Valve Leaflets for Biaxial Mechanical Characterization and Microstructural Quantification
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Layer Microdissection of Tricuspid Valve Leaflets for Biaxial Mechanical Characterization and Microstructural Quantification

Published on: February 10, 2022

Area of Science:

  • Biomechanics
  • Materials Science
  • Dermatology

Background:

  • Skin exhibits complex, non-linear, viscoelastic, and anisotropic material properties.
  • Understanding skin deformation is crucial for applications like shaving, needle insertion, and patient repositioning.
  • Large local strains can occur during these interactions.

Purpose of the Study:

  • To present a novel imaging-based method for studying skin deformations and layer mechanics.
  • To visualize and quantify skin layer deformations during dynamic mechanical testing.
  • To establish a foundation for constitutive models in finite element analysis of skin.

Main Methods:

  • Combined shear experiments with real-time video recording.
  • Utilized digital image correlation and strain field analysis.
  • Applied 10% global shear strain to porcine skin using a rotational rheometer and analyzed with ARAMIS software.

Main Results:

  • Demonstrated inhomogeneous skin deformation with distinct strain regimes in different layers.
  • Quantified shear strain: 2.0-5.0% in the epidermis and 10-22% in the dermis.
  • Determined shear moduli ranging from 20 to 130kPa.

Conclusions:

  • The developed imaging method effectively visualizes and quantifies skin layer deformations and mechanics.
  • Results highlight significant differences in strain distribution across skin layers.
  • This method provides a valuable foundation for advanced constitutive modeling of skin biomechanics.