Polyethylene-Carbon Composite (Velostat^®) Based Tactile Sensor.

Area of Science:

• Soft robotics
• Polymer composite materials
• Flexible tactile sensors

Background:

• Advancements in soft robotics drive demand for flexible sensors.
• Polymeric composite materials offer potential for tactile, pressure, and force sensing.

Purpose of the Study:

• Evaluate the characteristics of polyethylene-carbon composite (Velostat®) for flexible tactile sensors.
• Assess mechanical and time-dependent properties of the sensor.
• Determine the suitability of Velostat® for force-sensitive applications.

Main Methods:

• Implemented Velostat® into a flexible tactile sensor design.
• Explored electrical signal measurement techniques.
• Assessed sensor properties under static, long-term load, and cyclic conditions.
• Evaluated transverse resolution by measuring response at varying distances.

Main Results:

• Sensor exhibits hysteresis and nonlinear properties under cyclic loading.
• Characterized sensor sensitivity, hysteresis, response time, and deformation dependence on compressive force.
• Defined the transverse resolution of the tactile sensor.

Conclusions:

• Polyethylene-carbon composite (Velostat®) demonstrates practical potential for tactile sensors.
• The material is suitable for sensors utilizing a single electrode pair or matrix.
• Experimental results define implementation areas for Velostat®-based sensors.