Authors:

Harry Lee

Date Created:

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About Paper:

Wearable technologies seamlessly merge the digital and the physical world and have become widely used in industries such as entertainment, sports, military, healthcare, and security. With the growing popularity of wearable devices, flexible sensors play a crucial role in user interaction with technology. In this study flexible tensile force sensors were manufactured by impregnating different long carbon fiber patterns with silicone rubber. The manufacturing method of the sensors adopts the wet layup and vacuum bagging process of thermoset composite manufacturing techniques, resulting in a fast and cost-effective production method. Because carbon fiber is electrically conductive and silicone is not conductive, the stretching of the silicone between the fibers during tensile stretching changed the electrical resistance of the sensors. A Carbon fiber plain weave ply at 45-degree angle and segmented carbon fiber plain weave plies at 45-degree angle were the two patterns impregnated with silicone. The relationships between the tensile load and electrical resistance were characterized for each sensor. Additionally, the ultimate strength, elastic modulus, and fatigue resistance were also determined. The combination of cheaper manufacturing and improved durability due to the strength of carbon fiber will not only fuel the increasing demand of wearable technology, but also broaden the application of flexible sensors for harsher environments.

Source:

Purdue University / 2023

Topics:

No topics listed

Co-authors:

Harry Lee