Mechanical characterization and testing of multi-polymer combinations in 3D printing

Area of Science:

• Materials Science
• Mechanical Engineering
• Additive Manufacturing

Background:

• Industry 4.0 advancements include additive manufacturing, especially material extrusion printers.
• These printers allow complex part creation using cost-effective composite materials.

Purpose of the Study:

• To investigate the mechanical behavior of 3D printed multi-materials.
• To evaluate the impact of different material combinations on tensile, compression, and flexural properties.

Main Methods:

• Conducted tensile, compression, and flexural tests on various 3D printed material configurations.
• Analyzed mechanical properties based on material combinations and layer arrangements.

Main Results:

• Specific material combinations enhance tensile and compression properties.
• Individual materials show superior flexural strength due to better interlayer adhesion.
• PETG and PLA combinations optimize tensile properties; PLA outer layers excel in compression.
• A 4mm thickness limitation was noted for flexural testing of certain material combinations.

Conclusions:

• Material combinations significantly influence the mechanical properties of 3D printed parts.
• Optimized material selection can lead to enhanced performance for structural design applications.
• Further research may explore overcoming limitations in flexural testing dimensions for multi-material configurations.