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Related Concept Videos

Stress-Strain Diagram - Brittle Materials01:24

Stress-Strain Diagram - Brittle Materials

Brittle materials, including glass, cast iron, and stone, exhibit unique characteristics. They fracture without considerable change in their elongation rate, indicating that their breaking and ultimate strength are equivalent. Such materials also show lower strain levels at the point of rupture. The failure in brittle materials predominantly results from normal stresses, as evidenced by the rupture created along a surface perpendicular to the applied load. These materials do not display...
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A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
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Related Experiment Video

Updated: May 14, 2026

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

Fracturing highly disordered materials.

A A Moreira1, C L N Oliveira, A Hansen

  • 1Departamento de Física, Universidade Federal do Ceará, 60451-970 Fortaleza, Ceará, Brazil.

Physical Review Letters
|February 2, 2013
PubMed
Summary
This summary is machine-generated.

Disorder significantly impacts material fracturing. In extreme disorder, the fracture backbone has a fractal dimension of 1.22, consistent with other physical models, revealing new insights into material failure.

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Last Updated: May 14, 2026

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A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
09:12

A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation

Published on: June 28, 2015

Area of Science:

  • Physics
  • Materials Science
  • Statistical Mechanics

Background:

  • Fracturing in heterogeneous materials is complex.
  • Disorder plays a crucial role in material failure.
  • Understanding fracture mechanics is vital for material design.

Purpose of the Study:

  • To investigate the influence of disorder on the fracturing process.
  • To analyze the structural properties of fractures in heterogeneous materials.
  • To characterize the transition from weak to strong disorder in fracture networks.

Main Methods:

  • Utilized a two-dimensional fuse network model.
  • Simulated fracturing under varying degrees of disorder.
  • Calculated fractal dimensions of fracture backbones and largest fractures.

Main Results:

  • The fracture backbone in the extreme disorder limit exhibits a fractal dimension of 1.22 ± 0.01.
  • The largest fracture's fractal dimension (1.86 ± 0.01) deviates from standard percolation due to trapped regions.
  • Identified a crossover exponent characterizing the transition from weak to strong disorder.

Conclusions:

  • Disorder fundamentally alters fracture network topology.
  • The observed fractal dimensions provide insights into universality classes of physical phenomena.
  • The study quantifies the impact of disorder on fracture structure and identifies a critical transition point.