SonoPrint: Acoustically Assisted Volumetric 3D Printing for Composites.

Area of Science:

• Materials Science
• Engineering
• Additive Manufacturing

Background:

• Additive manufacturing of composites is crucial for aerospace and medical fields.
• Current reinforcement orientation methods in 3D printing have limitations in pattern complexity and particle control.
• Acoustic manipulation offers versatile particle control but faces integration challenges in 3D printing due to acoustic field scattering.

Purpose of the Study:

• To develop an innovative acoustically assisted volumetric 3D printer.
• To enable simultaneous reinforcement patterning and printing of composite structures.
• To overcome the limitations of existing methods for orienting reinforcements in 3D-printed materials.

Main Methods:

• Development of SonoPrint, an acoustically assisted volumetric 3D printer.
• Utilizing a standing wave field to orient reinforcement particles (glass, metal, polystyrene) within photosensitive resin.
• Simultaneous printing and reinforcement patterning in a few minutes.

Main Results:

• SonoPrint successfully embeds and orients reinforcement particles into complex patterns (lines, polygons, etc.).
• The printer overcomes acoustic scattering issues between polymerized and unpolymerized resin layers.
• Achieved rapid fabrication of mechanically tunable composite geometries.

Conclusions:

• SonoPrint represents a significant advancement in volumetric 3D printing technology.
• The ability to precisely control reinforcement patterns enhances structural properties of composites.
• This technology has potential applications in tissue engineering, biohybrid robots, and advanced composite fabrication.