Selective Particle Insertion in Additive Manufacturing
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Solution Overview
Problem
Conventional additive manufacturing techniques, such as Stereolithography assembly (SLA), struggle to incorporate multiple material properties within a single part effectively, leading to high expenses and prolonged schedules due to design iterations and the need for complex machinery and trained operators, and fail to achieve enhanced strength, conductivity, or armor characteristics.
Innovation Solution
The method involves forming particle containment structures using SLA and pen deposition techniques, allowing for the selective insertion of various particles like fibers, flakes, and metals into specific areas of a part, with each layer being cured to create composite parts with tailored material properties, using laser printing or pen deposition for precise particle placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional additive manufacturing techniques (SLA) are used to manufacture parts, then manufacturing capability is achieved, but the ability to incorporate multiple material properties within a single part is limited
Solution Approach 1:
The manufacturing process is segmented into distinct operational modes: SLA for forming containment structures and pen deposition for inserting particles. This segmentation allows each process to be optimized independently, enabling multiple material properties to be incorporated without requiring a single complex machine to perform all functions.
Solution Approach 2:
The invention creates composite parts by combining different materials (resin matrices from SLA and various particles from pen deposition) within a single component. This allows the part to exhibit multiple material properties such as enhanced strength, conductivity, or armor characteristics in specific areas while maintaining structural integrity.
2Ease of manufacture
If conventional additive manufacturing techniques are used, then parts can be manufactured, but manufacturing expenses and time increase due to design iterations
Solution Approach 1:
The invention changes the material state parameters by using curable resin that transitions from liquid to solid form through UV curing. This allows particles to be inserted into the resin in a liquid state and then locked in place through curing, enabling complex composite structures to be manufactured in a single process without iterative design corrections.
3Extent of automation
If conventional additive manufacturing techniques are used, then parts can be manufactured, but trained operators and extensive tooling are required
Solution Approach 1:
The system achieves multi-functionality by integrating SLA and pen deposition capabilities in a single manufacturing platform. This universal machine can form containment structures, insert various types of particles (fibers, flakes, metals), and cure the resin, eliminating the need for multiple specialized machines and highly trained operators for each process.
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
This approach enables the creation of composite parts with tailored material properties, reducing manufacturing costs and time by allowing specific areas to have enhanced strength, conductivity, or armor characteristics without the need for extensive tooling or trained operators, and allows for direct production from CAD databases.
Implementation Method 1
Stereolithography assembly (SLA) is one specific type of AM process which employs a vat of liquid ultraviolet curable photopolymer resin and an ultraviolet laser to build individual layers of the part one at a time. Exposure to the ultraviolet laser light cures and solidifies the pattern traced on the resin and joins it to the layer below.
Implementation Method 2
forming, by additive manufacturing, a cover to encapsulate any exposed particles; and fully curing the particle containment structure, particles and cover
Data Source
AI summary
A method of forming a component having multiple material properties includes forming, by additive manufacturing, a particle containment structure on a base layer; filling the particle containment structure with a first layer of particles, the layer of particles being contained by the particle containment structure; curing the first layer of particles; repeating the forming the particle containment structure, filling the particle containment structure with one or more additional layers of particles and curing the one or more additional layers of particles until a desired component dimension is achieved; forming, by additive manufacturing, a cover to encapsulate any exposed particles; and fully curing the particle containment structure, particles and cover.