Durability Testing of Soft Pneumatic Actuators with A Portable Device

Soft pneumatic actuators (SPAs) present significant advantages for handling a variety of objects due to the inherent flexibility and adaptability. However, their durability remains a key challenge in practical applications, as the soft materials used are prone to failure. Therefore, there is a critical need for an effective device to evaluate the durability of SPAs. A portable, reliable, and scalable testing device would facilitate broader adoption across various work scenarios. Durability testing not only determines the operational lifespan of SPAs prior to deployment but also identifies areas prone to breakage, allowing for targeted improvements to enhance their strength and durability. In this study, we propose a design for a portable durability testing device and demonstrate its application in evaluating SPA durability and guiding targeted enhancements. The experimental tests validated the reliability of the proposed device, while the combination of testing and finite element (FE) analysis led to significant improvements in durability of the SPA. This study offers a available solution for SPA durability assessment, enabling both a deeper understanding of their lifespan and focused improvement initiatives.