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Related Experiment Video

Updated: Oct 15, 2025

Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
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Time Evolution and Spatial Hierarchy of Crack Patterns.

Ankush Kumar1, G U Kulkarni1

  • 1Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India.

Langmuir : the ACS Journal of Surfaces and Colloids
|October 27, 2021
PubMed
Summary
This summary is machine-generated.

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Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
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Crack patterns in drying colloidal systems show predictable scaling laws. The study reveals that crack area and width increase linearly with time, allowing for age and authenticity determination in various materials.

Area of Science:

  • Materials Science
  • Physics
  • Geology

Background:

  • Desiccation cracks are common in natural and manmade colloidal systems.
  • Crack patterns exhibit similar features across different length and time scales.

Purpose of the Study:

  • To investigate general scaling laws in crack formation during colloidal system desiccation.
  • To analyze the time evolution of crack pattern parameters.

Main Methods:

  • Utilized a common colloidal dispersion under optimized conditions to form polygonal crack networks.
  • Studied the time evolution of crack area, length, and width.
  • Developed a recursive model incorporating crack angles.

Main Results:

  • Crack area and width increase nearly linearly with time, with slope changes indicating crack generation.

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  • Normalized crack evolution trends overlap for different film thicknesses, except for unconnected cracks.
  • The recursive model can identify crack segment hierarchies.

    • Conclusions:

    • Crack formation in colloidal systems follows predictable time evolution based on width filtering.
    • The developed approach can aid in dating old paintings and understanding geological stress profiles.