Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Plastic Behavior01:21

Plastic Behavior

399
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
399
Residual Stresses in Bending01:18

Residual Stresses in Bending

429
In the study of elastoplastic members subjected to bending moments, understanding the loading and unloading phases is crucial for assessing material behavior and structural integrity. During the loading phase, as the bending moment increases, the material initially responds elastically, adhering to Hooke's Law, where stress is directly proportional to strain. When the load exceeds the yield strength, plastic deformation occurs, resulting in permanent strain and deformation that remains even...
429
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

437
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
437
Plastic Deformations01:14

Plastic Deformations

297
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
297
Plastic Deformations01:19

Plastic Deformations

321
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
321
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

279
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
279

You might also read

Related Articles

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

Sort by
Same author

Tailored-Reflectivity Microstructures for Measuring Signal Sensitivity of Optical Coherence Tomography Medical Imaging Systems.

Advanced materials technologies·2026
Same author

A Mild Calcium Carbonate Treatment Improves Moisture Resistance and Mechanical/Interfacial Properties of Jute and Hemp Fibers.

ACS omega·2026
Same author

Epoxy-Amine Route to Tough and Degradable Aromatic Polyester Thermosets.

ACS applied polymer materials·2025
Same author

Ellipsometric Characterization of Network Topology Transition in Vitrimers.

ACS macro letters·2025
Same author

Overcoming Mineral Scaling Challenges in Lithium Extraction from Geothermal Brines: The Roles of Silica, Fe(II), and Mn(II) in Electrochemical Intercalation.

Environmental science & technology·2025
Same author

The foreign body response to biomaterial implants is reduced by co-inhibition of TLR2 and TLR4.

Acta biomaterialia·2025

Related Experiment Video

Updated: Dec 4, 2025

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
13:57

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

14.2K

Quantifying Strain via Buckling Instabilities in Surface Modified Polymer Brushes.

Cassandra M Reese1, Wei Guo1, Brittany J Thompson1

  • 1School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS 39406.

Macromolecules
|October 26, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to measure compressive strain in wrinkled polymer films using wrinkle dimensions. This technique quantifies strain in systems where it

Keywords:
polymer brushpostpolymerization modificationwrinkling

More Related Videos

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

5.2K
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

12.6K

Related Experiment Videos

Last Updated: Dec 4, 2025

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
13:57

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

14.2K
Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

5.2K
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

12.6K

Area of Science:

  • Materials Science
  • Polymer Physics
  • Nanotechnology

Background:

  • Compressive strain in bilayer films induces buckling or wrinkling, crucial for applications like stretchable electronics and metrology.
  • Existing methods struggle to quantify unknown compressive strain in systems like solvent-swollen or thermally strained polymer films.

Purpose of the Study:

  • To present a quantitative method for measuring compressive strain in wrinkled polymer films and coatings.
  • To validate the method using a well-established polymer-on-substrate model system.
  • To apply the method to quantify swelling strain in polymer brush surfaces.

Main Methods:

  • Derivation of an analytical expression relating compressive strain to wrinkle wavelength and amplitude.
  • Validation using a polystyrene (PS) thin film on a polydimethylsiloxane (PDMS) substrate.
  • Application to quantify swelling strain in poly(styrene-alt-maleic anhydride) brush surfaces.

Main Results:

  • A validated analytical method for quantifying compressive strain in wrinkled polymer films.
  • Quantification of swelling strain in polymer brush surfaces.
  • Rationalization of wrinkle persistence length based on applied strain.

Conclusions:

  • The developed method provides a reliable way to measure unknown compressive strain in wrinkled polymer systems.
  • This technique advances the understanding and application of wrinkled morphologies in materials science and nanotechnology.
  • The findings aid in the design and characterization of advanced materials for various technological applications.