Development of Miniature Tensile-Test System of Intermediate Strain Rate Based on Electromagnetic Launch
Publication: Journal of Engineering Mechanics
Volume 149, Issue 11
Abstract
To study the dynamic properties of intermediate strain rates for filiform or filmy materials, a miniature tensile-test system with an intermediate strain rate based on magnetic resistance actuation is designed herein. The loading part of the system is formed by inertial movement and an electromagnetic launcher, and the testing part is formed by high-speed optical noncontact measurements using a microforce sensor. Constant tension and intermediate speed are realized by designing the inertial motion of a large-mass combined accelerator. Friction and vibration are offset using magnetic attraction. The electromagnetic acceleration force was eliminated by adjusting the length differences, construction, and relative motion of the structures. The stress–strain curves are obtained by synchronizing the strain signal measured using the optical extensometer method and the stress signal measured using the microforce sensor. The system is verified to be miniature, stable, easy to control, accurate for strain rate, economic, and used for small samples. The stability and reliability of the system are verified using speed testing and motion-state photography. Therefore, the designed system is miniature, easy to control, highly cost-effective, and can be used for filiform or filmy samples.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work is financially supported by the National Natural Science Foundation of China (11972084) and the National Science and Technology Major Project (2017-VI-0003-0073).
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 149 • Issue 11 • November 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jan 15, 2023
Accepted: Jul 12, 2023
Published online: Sep 8, 2023
Published in print: Nov 1, 2023
Discussion open until: Feb 8, 2024
ASCE Technical Topics:
- Continuum mechanics
- Design (by type)
- Dynamic properties
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Forces (type)
- Inertia
- Load and resistance factor design
- Load factors
- Load tests
- Magnetic fields
- Material mechanics
- Material properties
- Materials engineering
- Solid mechanics
- Statics (mechanics)
- Strain
- Strain rates
- Structural behavior
- Structural design
- Structural engineering
- Tests (by type)
Authors
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