Vacuum Powder Placement for Localized Material Properties
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Solution Overview
Problem
Additive manufacturing systems face challenges in fabricating components with variations in localized material properties, as joining multiple components with different properties can increase assembly costs and risk of failure due to the joint between components.
Innovation Solution
A method and system that utilize a material delivery system with a vacuum source and air-permeable screen to deposit and consolidate multiple material particles on a build platform, allowing for the creation of components with distinct, localized properties by using a combination of first and second material particles, potentially with a sacrificial material for support during fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate components with different material properties are joined together to achieve localized material properties, then the component can have varied material properties, but the assembly cost and risk of failure increase due to joints
Solution Approach 1:
The patent merges multiple material deposition operations into a single additive manufacturing process, depositing different material particles (e.g., metal, ceramic, polymer) simultaneously or sequentially in the same build chamber to create a single monolithic component with spatially varying material properties, thereby eliminating joints between separate components and improving reliability
Solution Approach 2:
The patent implements local quality by enabling selective deposition of different material types at different locations within the same component layer. The system can vary material composition, properties, or type at specific regions while maintaining a single integrated component structure, achieving localized functional properties without creating separate joinable components
2Adaptability or versatility
If multiple separate components with different material properties are joined together to achieve localized material properties, then the component can have varied material properties, but the assembly cost increases
Solution Approach 1:
The patent combines multiple material deposition processes into one unified additive manufacturing operation, eliminating the need for separate manufacturing and assembly operations for different material components. This integration reduces assembly costs by producing a single component in one process rather than joining multiple pre-fabricated parts
Solution Approach 2:
The additive manufacturing system performs multiple functions through a single process: it can deposit different material types, control material distribution, create complex geometries, and produce localized material properties all within one manufacturing operation, replacing what would traditionally require multiple specialized processes and subsequent assembly steps
3Adaptability or versatility
If a material delivery system deposits different material particles onto a build platform, then components with localized material properties can be fabricated, but the system complexity increases
Solution Approach 1:
The patent segments the material delivery function into multiple independently controllable deposition zones or material sources, each capable of delivering specific material types. This segmentation allows precise control over material placement while maintaining modular system architecture that manages complexity through functional decomposition
Solution Approach 2:
The patent introduces an intermediary material delivery mechanism (such as a multi-material extrusion system or selective powder deposition system) that mediates between the control system and the build platform. This intermediary handles the complexity of material management, routing, and selection, allowing the control system to manage complexity through software rather than mechanical complexity
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
Enables the fabrication of components with predetermined, localized material properties, reducing assembly costs and failure risks by simultaneously depositing and consolidating different material particles within the same component layer, while providing a system for efficient material delivery and support during the manufacturing process.
Implementation Method 1
entraining a first portion of first material particles in an airflow generated by a vacuum source and engaging the first portion of the first material particles against an air permeable screen
Implementation Method 2
transferring heat to at least a portion of at least one of the first portion of the first material particles or the second portion of the second material particles with an energy source to facilitate consolidating
Data Source
AI summary
A method for fabricating a component of with an additive manufacturing system include entraining a first portion of first material particles in an airflow generated by a vacuum source and engaging the first portion of the first material particles against an air permeable screen. The first portion of the first material particles is deposited onto a build platform. The method also includes entraining a second portion of second material particles in the airflow and engaging the second portion of the second material particles against the air permeable screen. The second portion of the second material particles is deposited onto the build platform. An energy source transfers heat to at least a portion of at least one of the first portion of the first material particles or the second portion of the second material particles to facilitate consolidating material particles to fabricate the component.