Theme
Metal Core Piezoelectric Fiber
- Upper: Metal Core Piezoelectric Fiber Lower: Mechanical pencil lead (0.5 mm diameter)
- Metal Core Piezoelectric fiber embedded in CFRP composite material
Research keywords
Piezoelectric fiber, sensor, actuator, smart board
Research Objectives
We are developing piezoelectric fibers with a diameter of 200 μm that have a metallic core inside and studying applications using the piezoelectric fibers. Since it has a metallic core inside, it can be used for sensors and actuators simply by embedding it in conductive materials.
Research Results
By embedding piezoelectric fibers with metal cores in FRP composite materials, we have developed smart boards that can detect and suppress vibrations, and by using shape memory alloys for the inner core, we have developed composite functional fibers that have four functions: shape memory effect, superelastic effect, piezoelectric effect, and pyroelectric effect, and We are also working on applications for energy-harvesting devices, etc.
Links (external publications, patents, related news, etc.)
- Patent JP3968430 "Lead zirconate titanate fiber, smart board using lead zirconate titanate fiber and actuator and sensor using smart board"
- Patent JP2005187902A "PZT piezoelectric film-formed nickel-titanium alloy and its manufacturing method"
- Patent JP2005208975A "Active vibration control method of a smart board in which piezoelectric fibers with metal cores are embedded"
- Paten JP2006245337A "Functional composite material in which piezoelectric fibers with metal cores are embedded"
- Patent JP2007124276A "Piezoelectric fiber and non-destructive testing method using the piezoelectric fiber"
