Application of Design Aspects in Uniaxial Loading Machine Development.

Area of Science:

• Mechanical Engineering
• Materials Science
• Biomedical Engineering

Background:

• Commercial mechanical testing machines offer high accuracy but are prohibitively expensive ($100,000 - $200,000).
• Manual testing devices often lack the necessary accuracy and repeatability for precise measurements.
• Existing laboratory equipment may not support specialized loading requirements, such as pure uniaxial motion.

Purpose of the Study:

• To describe the design and implementation of an in-house developed loading platform.
• To enable pure uniaxial loading, specifically focusing on tensile testing applications.
• To provide a cost-effective alternative for precise mechanical testing beyond standard biaxial systems.

Main Methods:

• Designed and machined a custom frame to integrate commercial load cells and actuators (movers).
• Developed a platform specifically for pure uniaxial loading, applying equal and opposite forces to specimen ends.
• Focused on tensile loading configurations, though the device is also suitable for compression testing.

Main Results:

• Successfully created a functional loading platform capable of pure uniaxial mechanical testing.
• The device enables precise tensile loading by applying equal and opposite forces, unlike standard biaxial machines.
• Incorporates commercial components within a custom-machined frame for a cost-effective solution.

Conclusions:

• The developed loading platform offers a viable solution for achieving pure uniaxial loading in mechanical testing.
• This in-house engineered device provides an accurate and repeatable method for specialized tensile tests.
• It represents a practical and economical approach for laboratories needing motion not available in standard commercial equipment.