Usage of shape memory alloy actuators for large force active disassembly applications.

Area of Science:

• Materials Science
• Mechanical Engineering
• Robotics

Background:

• Shape memory alloys (SMAs) offer high force generation in compact actuators, making them suitable for active disassembly.
• Existing research on SMA active disassembly focuses on low-force applications, leaving a gap for high-force scenarios.

Purpose of the Study:

• To investigate the use of SMA actuators for large-force active disassembly.
• To determine the optimal compressive strain for maximizing recovery force and minimizing residual strain in SMA actuators.
• To validate the practical implementation of SMA actuators in high-force active disassembly through a case study.

Main Methods:

• Studied SMA element behavior under repetitive compressive strains, analyzing recovery force and strain hardening.
• Estimated the optimal compressive strain for maximum force generation with minimal residual strain.
• Conducted a practical case study to validate SMA actuator performance in large-force active disassembly.

Main Results:

• Identified compressive strain as the most influential factor on SMA recovery force.
• Determined an optimal compressive strain value that balances high force generation with low residual strain.
• Successfully demonstrated the feasibility of using SMA actuators for large-force active disassembly in a case study.

Conclusions:

• SMA actuators are viable for large-force active disassembly applications.
• Optimizing compressive strain is crucial for efficient and repeatable SMA actuator performance in disassembly tasks.
• This research provides a foundation for developing SMA-based solutions for complex disassembly challenges.