Atmospheric Plasma Conduction for 3D Printed Part Bonding
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Solution Overview
Problem
3D printing technologies face challenges with weaker welds between printed filaments in the z-direction, leading to delamination and reduced structural integrity of 3D models.
Innovation Solution
A 3D printing process that involves extruding thermoplastic composite materials with conductive nanomaterials, such as carbon nanotubes, and using atmospheric plasma as an electrical conduction pathway to apply electromagnetic energy, which generates heat and improves the bonding between layers by fusing the newly extruded layers with previously extruded layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electromagnetic energy is applied directly to the 3D printed part, then heating efficiency improves, but the plasticized material becomes too conductive causing electromagnetic energy to bypass the part
Solution Approach 1:
A plasma cloud is introduced as an intermediary medium between the electromagnetic energy source and the 3D printed part. The plasma cloud conducts electromagnetic energy to the part's surface, enabling efficient energy transfer without direct contact. This mediator allows the system to heat the part effectively while avoiding the problem of bypass caused by excessive surface conductivity.
Solution Approach 2:
The conductivity of the plasma cloud is controlled by adjusting parameters such as gas flow rate, power input, and plasma generation conditions. By maintaining optimal plasma conductivity, the system ensures efficient electromagnetic energy conduction to the part while preventing energy loss through bypass, thus resolving the contradiction between heating efficiency and energy loss.
2Power
If plasma conductivity is increased to improve electromagnetic energy conduction, then energy transfer efficiency improves, but electromagnetic energy bypasses the part
Solution Approach 1:
The plasma conductivity is precisely controlled by adjusting operational parameters such as gas flow rate, power input, and plasma generation conditions. This parameter optimization ensures that the plasma cloud maintains sufficient conductivity for effective electromagnetic energy conduction while preventing excessive conductivity that would cause energy bypass, thus resolving the contradiction between power transfer and energy loss.
Solution Approach 2:
The system incorporates feedback mechanisms to monitor and adjust plasma conductivity in real-time. By continuously measuring plasma properties and adjusting control parameters, the system maintains optimal conductivity levels that maximize electromagnetic energy conduction to the part while minimizing energy bypass, effectively resolving the power versus energy loss contradiction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The process enhances the interlayer adhesive strength of 3D printed parts, resulting in improved structural integrity and reduced delamination, by ensuring even heating and consistent bonding throughout the printed structure.
Implementation Method 1
The thermoplastic composite includes a conductive material that generates heat by reacting to the electromagnetic energy, which includes an electric current
Implementation Method 2
directing an evenly distributed plasma onto a predetermined location on the 3D part; and emitting an electromagnetic energy through the plasma. The plasma conducts the electromagnetic energy to the predetermined location on the 3D part
Implementation Method 3
The plasma generating portion is configured to generate and discharge an atmospheric plasma capable of conducting an electric current in a predetermined direction
Data Source
AI summary
A three-dimensional (3D) printing process utilizing an atmospheric plasma to conduct an electromagnetic energy to fuse extruded successive layers of thermoplastic material having a conductive material is disclosed. A 3D printing system for the 3D printing process is also provided. The 3D printing system includes a 3D printer, an extrusion nozzle, a plasma emitter, and an electromagnetic energy source. The 3D printing process includes the steps of extruding a thermoplastic composite with the extrusion nozzle in successive layers to form a 3D part; directing a substantially evenly distributed plasma onto a predetermined location on the 3D part; and emitting an electromagnetic energy through the plasma. The plasma conducts the electromagnetic energy to the predetermined location on the 3D part. The thermoplastic composite includes a conductive material that generates heat by reacting to the electromagnetic energy.