Additively Manufactured Electronic Enclosures for Multi-Property Balance
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Solution Overview
Problem
Existing electronic device enclosures struggle to balance multiple performance properties such as strength, appearance, toughness, abrasion resistance, weight, corrosion resistance, thermal conductivity, and electromagnetic shielding, often achieving optimal performance in only some areas while neglecting others.
Innovation Solution
A housing for electronic devices is constructed with a pre-formed exterior portion and an additively manufactured interior portion, using different metals for each, allowing for decoupled material properties and structures that enhance specific properties like thermal conductivity and strength, with the interior portion being bonded to the exterior through methods like diffusion bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single material is used for the housing, then the manufacturing process is simple, but it is impossible to achieve optimal performance across multiple properties simultaneously
Solution Approach 1:
The housing is divided into multiple portions, each made from different materials optimized for specific functions. The first housing portion uses a first material for certain properties, while the second housing portion uses a second material for different properties, allowing each segment to be optimized independently for its intended purpose.
Solution Approach 2:
The housing combines multiple materials in a composite structure where each material contributes its unique properties. By integrating different materials with complementary characteristics, the housing achieves a balanced performance across strength, weight, thermal conductivity, and other properties that would be impossible with a single material.
2Adaptability or versatility
If multiple materials are used in the housing, then multiple properties can be optimized, but the manufacturing complexity increases
Solution Approach 1:
Multiple housing portions made from different materials are joined together to form an integrated housing assembly. The merging of these portions creates a unified structure that leverages the strengths of each material while presenting a cohesive design, thereby managing complexity through systematic integration.
Solution Approach 2:
Different regions of the housing are assigned different materials based on local performance requirements. Each housing portion is tailored with specific material properties where needed, such as using lighter materials in non-critical areas and stronger materials in load-bearing sections, optimizing performance without unnecessarily increasing overall complexity.
3Ease of manufacture
If traditional manufacturing methods are used, then production is straightforward, but achieving complex structures and optimized material distributions is difficult
Solution Approach 1:
The housing portions are pre-formed from different materials using appropriate manufacturing processes, then subsequently joined together. This preliminary formation allows each portion to be optimized for its specific material properties and structural requirements before integration, achieving precise material distribution and complex structures that would be difficult to accomplish in a single manufacturing step.
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 solution enables a housing that achieves a balanced performance across various properties, including improved thermal conductivity and structural integrity, while allowing for complex structures and reduced weight, and supports integration of additional components like antennas and circuits.
Implementation Method 1
a first additively manufactured portion bonded to the first pre-formed substrate
Data Source
AI summary
A component for an electronic device can include a pre-formed substrate comprising a first metal and an additively manufactured portion bonded to the pre-formed substrate. The additively manufactured portion can include a first portion comprising a second metal and defining a volume, the first portion having a first value of a material property, and a second portion disposed in the volume, the second portion having a second value of the material property that is different from the first value.