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

Static Equilibrium - I01:05

Static Equilibrium - I

18.9K
A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but only when its linear and angular velocities are constant. A rigid body is said to be in static equilibrium when it is at rest in the selected frame of reference. The distinction between static equilibrium (e.g., a state of rest) and dynamic equilibrium (e.g, a state of uniform motion) is...
18.9K
Static Equilibrium - II01:07

Static Equilibrium - II

10.0K
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
10.0K
Static Friction01:18

Static Friction

1.4K
Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
1.4K
Problem Solving in Statics01:28

Problem Solving in Statics

1.7K
Problem-solving in statics is a crucial aspect of engineering and physics that involves resolving issues associated with bodies in a state of equilibrium. In most cases, problem-solving requires several steps to achieve an accurate result. These steps are crucial to ensuring that the solution is accurate and practical.
The physical situation and mathematical modeling must be considered; however, it is challenging to represent all physical situations using mathematical modeling. With the help of...
1.7K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

1.0K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
1.0K
Statically Indeterminate Problem Solving01:16

Statically Indeterminate Problem Solving

719
Statically indeterminate problems are those where statics alone can not determine the internal forces or reactions. Consider a structure comprising two cylindrical rods made of steel and brass. These rods are joined at point B and restrained by rigid supports at points A and C. Now, the reactions at points A and C and the deflection at point B are to be determined. This rod structure is classified as statically indeterminate as the structure has more supports than are necessary for maintaining...
719

You might also read

Related Articles

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

Sort by
Same author

Enhancing flavor quality in low-salt dried large yellow croaker (Pseudosciaena crocea) through secondary fermentation: insights into microbial drivers.

Food chemistry·2026
Same author

Adhesives with a thickness smaller than the fractocohesive length enhance adhesion.

Soft matter·2026
Same author

A low-temperature, water-free fabrication route to Mg-based micro thermoelectric coolers for thermal management.

Nature communications·2026
Same author

Pectin removal in Acer rubrum increases pit membrane compliance and embolism propagation.

Plant physiology·2026
Same author

A modular hydrogel system with independent control of bioadhesion, fibrosis, and stiffness.

Science advances·2026
Same author

Chlorocholine chloride disrupts differentiation of rat stem/progenitor Leydig cells: A combined in vivo and in vitro study by Leydig cell regeneration model.

Environmental toxicology and pharmacology·2026

Related Experiment Video

Updated: Jan 29, 2026

An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart
10:28

An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart

Published on: June 7, 2015

17.9K

Flaw-Insensitive Hydrogels under Static and Cyclic Loads.

Ruobing Bai1,2, Jiawei Yang1,2, Xavier P Morelle1,2

  • 1John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.

Macromolecular Rapid Communications
|February 12, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces flaw-insensitive hydrogels by aligning polymer chains to deflect cracks. These advanced hydrogels resist fracture under static and cyclic loading, even with pre-existing flaws.

Keywords:
anisotropyfatigueflaw-insensitivityfracturehydrogels

More Related Videos

Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model
09:19

Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model

Published on: September 20, 2020

4.9K
A Non-Invasive Method for Generating the Cyclic Loading-Induced Intra-Articular Cartilage Lesion Model of the Rat Knee
05:04

A Non-Invasive Method for Generating the Cyclic Loading-Induced Intra-Articular Cartilage Lesion Model of the Rat Knee

Published on: July 5, 2021

2.6K

Related Experiment Videos

Last Updated: Jan 29, 2026

An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart
10:28

An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart

Published on: June 7, 2015

17.9K
Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model
09:19

Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model

Published on: September 20, 2020

4.9K
A Non-Invasive Method for Generating the Cyclic Loading-Induced Intra-Articular Cartilage Lesion Model of the Rat Knee
05:04

A Non-Invasive Method for Generating the Cyclic Loading-Induced Intra-Articular Cartilage Lesion Model of the Rat Knee

Published on: July 5, 2021

2.6K

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Fracture Mechanics

Background:

  • Tough hydrogels are crucial for new applications.
  • Existing tough hydrogels fracture under cyclic loads due to flaws.
  • A new design principle is needed for flaw-insensitive hydrogels.

Purpose of the Study:

  • To present a principle for designing flaw-insensitive hydrogels.
  • To demonstrate molecular alignment for crack deflection.
  • To quantify the anisotropy required for crack deflection.

Main Methods:

  • Designing hydrogels with aligned polymer chains at the molecular level.
  • Preparing polyacrylamide and polyvinyl alcohol hydrogels with aligned crystalline domains.
  • Conducting experiments and fracture mechanics analysis to quantify anisotropy.

Main Results:

  • Aligned polymer chains in hydrogels deflect cracks, preventing catastrophic failure.
  • The hydrogel demonstrated flaw insensitivity under static and over ten thousand cyclic loading cycles.
  • A critical degree of anisotropy for crack deflection was quantified.

Conclusions:

  • Molecular alignment provides a principle for creating flaw-insensitive hydrogels.
  • This design enhances hydrogel durability under static and cyclic loads, even with flaws.
  • The principle is generalizable to other hydrogel systems.