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Reviewing the Integrated Design Approach for Augmenting Strength and Toughness at Macro- and Micro-Scale in
Behzad Sadeghi1, Pasquale Daniele Cavaliere1
1Department of Innovation Engineering, University of Salento, Via Per Arnesano, 73100 Lecce, Italy.
Materials (Basel, Switzerland)
|September 9, 2023
Summary
Designing advanced metal matrix composites (MMCs) with tailored architectures is key to achieving high strength and toughness simultaneously. This approach overcomes the traditional inverse relationship, enabling superior performance in demanding industries.
Area of Science:
- Materials Science
- Mechanical Engineering
- Composite Materials
Background:
- Growing demand for high-strength, high-toughness materials in aerospace and automotive industries.
- Metal matrix composites (MMCs) offer potential for weight reduction and performance enhancement, particularly aluminum matrix composites (AMCs).
- A significant challenge is the inverse relationship between strength and toughness in conventional MMCs, limiting their widespread application.
Purpose of the Study:
- To review composite material design strategies for simultaneously enhancing strength and toughness in MMCs.
- To examine toughness mechanisms, distribution properties, and structural parameters in advanced composite structures.
- To explore future directions in architectural composites and reinforcement design based on energy dissipation theory.
Main Methods:
- Review of existing literature on MMC design configurations and their impact on mechanical properties.
- Analysis of synergistic effects, including stress-strain gradients, dislocations, and interfacial behavior.
- Investigation of bio-inspired composite designs and fracture behavior in heterogeneous nanostructures.
Main Results:
- Composite architecture, including reinforcement shape, size, and distribution, significantly influences mechanical properties.
- Synergistic effects between internal components lead to exceptional strength, plasticity, and fracture toughness.
- Bio-inspired designs and understanding nanoscale fracture mechanisms offer pathways to overcome the strength-toughness trade-off.
Conclusions:
- The design of composite architectures is crucial for developing MMCs with excellent strength and toughness.
- Tailored architectures can meet the stringent requirements of lightweight structures in aerospace, automotive, and electronics.
- Further research into energy dissipation theory and nanoscale phenomena will drive innovation in MMC development.
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