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Related Concept Videos

Fatigue01:21

Fatigue

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Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
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Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

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In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
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Microcracking in Concrete01:20

Microcracking in Concrete

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Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
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Method of Superposition01:20

Method of Superposition

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The method of superposition is a crucial technique in structural engineering, used to analyze the effect of multiple loads on beams. This approach involves calculating the deflection and slope for each load on a beam separately, and then summing these effects to determine the overall impact. It is applicable only when the beam material remains within its elastic limit, ensuring that deformations are linearly elastic.
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Yield Criteria for Ductile Materials under Plane Stress01:25

Yield Criteria for Ductile Materials under Plane Stress

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In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
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Principal Stresses: Problem Solving01:15

Principal Stresses: Problem Solving

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When analyzing two planes intersecting at right angles under the influence of shearing, tensile, and compressive stresses, it is essential to identify principal planes, maximum shearing stress, and principal stresses. To find the principal planes, apply a formula that equates them to twice the shearing stress divided by the difference between tensile and compressive stresses.
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Related Experiment Video

Updated: Sep 11, 2025

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
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Trans-Scale Progressive Failure Analysis Methodology for Composite Materials Incorporating Interfacial Phase Effect.

Zhijie Li1, Fei Peng2, Jian Zhao1,3,4

  • 1Key Laboratory of AI-Aided Airworthiness of Civil Aircraft Structures, School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China.

Materials (Basel, Switzerland)
|August 14, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a trans-scale analysis for fiber-reinforced composites, incorporating interface effects to accurately predict matrix, fiber, and interface failures. The new method enhances prediction accuracy and captures interface failure modes, unlike traditional criteria.

Keywords:
compositeinterface equivalenceprogressive failuretrans-scale

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Computational Mechanics

Background:

  • Fiber-reinforced composites exhibit complex anisotropic behavior due to distinct fiber and matrix properties.
  • Existing macro-failure criteria oversimplify composite failure by not accounting for micro-scale events.
  • The interface between fiber and matrix plays a critical role in composite performance and failure.

Purpose of the Study:

  • To develop a trans-scale analysis method that incorporates the interface phase effect for composite materials.
  • To establish an equivalent mechanical property characterization model for the fiber-matrix interface.
  • To enable simultaneous prediction of failure modes at the fiber, matrix, and interface levels.

Main Methods:

  • Introduced the interface phase effect into a trans-scale analysis framework.
  • Developed an equivalent mechanical property characterization model for the interface phase.
  • Utilized a macro-micro-strain transfer method for trans-scale correlation.
  • Implemented a micro-scale failure criterion with a stiffness reduction strategy.
  • Performed numerical simulations using Python and Abaqus 2020.

Main Results:

  • The developed trans-scale failure analysis method accurately predicts composite material failure, including matrix, fiber, and interface modes.
  • Numerical simulations demonstrated good prediction accuracy compared to experimental data and existing criteria (Linde, Hashin).
  • The method uniquely predicts the failure mode of the fiber-matrix interface, improving accuracy by 2-3%.

Conclusions:

  • The trans-scale analysis method incorporating interface effects provides a more comprehensive understanding of composite failure mechanisms.
  • This approach significantly enhances prediction accuracy and captures critical interface failure phenomena.
  • The developed methodology offers a valuable tool for designing and analyzing advanced composite materials.