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Composite Bodies

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A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
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Fabrication and Design of Wood-Based High-Performance Composites

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Published on: November 9, 2019

Responsive materials: a novel design for enhanced machine-augmented composites.

Ehsan Bafekrpour¹, Andrey Molotnikov¹, James C Weaver²

¹Centre for Advanced Hybrid Materials, Department of Materials Engineering, Monash University, Clayton, Victoria 3800, Australia.

Scientific Reports

|January 22, 2014

Summary

This summary is machine-generated.

Novel machine-augmented composites (MACs) were developed using 3D printing, significantly improving displacement conversion efficiency and tripling energy absorption. These responsive materials offer potential in energy absorbers and mechanical systems.

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Area of Science:

Materials Science
Mechanical Engineering
Composite Materials

Background:

Responsive materials with displacement conversion capabilities are crucial for advanced applications.
Existing machine-augmented composites (MACs) have limitations in efficiency and energy absorption.

Purpose of the Study:

To design and fabricate novel MACs with enhanced displacement conversion capabilities.
To improve the geometry and fabrication of MACs for better performance.
To explore new functionalities, such as compressive-to-torsional displacement conversion.

Main Methods:

Design of embedded converter machines and MACs with optimized geometry.
Fabrication using multi-material 3D printing.
Characterization of tuneable elastic moduli, inter-material bonding, displacement conversion efficiency, and energy absorption.

Main Results:

Successful fabrication of novel MACs with tuneable properties and excellent bonding.
Demonstrated substantial improvement in displacement conversion efficiency compared to existing MACs.
Achieved a threefold increase in energy absorption capacity.

Conclusions:

The developed MACs represent a significant advancement in responsive materials.
The multi-material 3D printing technique is highly effective for fabricating these complex composites.
Envisaged applications include advanced energy absorbers, mechanical sensors, and actuators, with potential for compressive-to-torsional conversion.