Embedded Strain Gauge Layers for Conductive Substrate Damage Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices are prone to deformation, cracking, or breaking due to applied forces during fabrication, shipping, handling, and installation, which can lead to decreased performance and require costly repairs or replacements, often undetected until operation.
Innovation Solution
Integrating strain gauges between layers of an electrically conducting substrate to measure internal stress and strain, allowing early detection of damage by quantifying deformations and stress levels, thereby enabling timely repair or replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If strain gauges are integrated between layers of the substrate, then measurement precision of internal stress and strain is improved, but device complexity increases
Solution Approach 1:
The strain gauge is nested within the substrate structure by depositing it on an intermediate layer between the first and second layers of the electrically conducting substrate. This integration allows the strain gauge to be embedded within the device itself rather than attached externally, enabling internal stress measurement while maintaining a compact multi-layer architecture.
Solution Approach 2:
The strain gauge functionality is merged with the substrate fabrication process by depositing the strain gauge material as part of the layered substrate structure. The strain gauge, first layer, and second layer are formed together in an integrated manufacturing sequence, combining the structural and sensing functions into a single unified component.
2Reliability
If strain gauges are deposited on intermediate layers, then reliability of damage detection is improved, but manufacturing precision requirements increase
Solution Approach 1:
The strain gauge is deposited on an intermediate layer during the substrate fabrication process, before the final substrate structure is complete. This preliminary placement ensures the strain gauge is correctly positioned within the layered structure, allowing it to accurately measure internal stresses that develop during subsequent processing and device operation.
Solution Approach 2:
By nesting the strain gauge within the intermediate layer of the substrate, the measurement element is protected and properly positioned to capture internal stresses. This embedded configuration improves detection reliability by ensuring the strain gauge experiences the same mechanical environment as the substrate itself, rather than being attached externally where positioning errors could occur.
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 strain gauges provide early warning of substrate damage, reducing the impact of cracks or breaks by allowing proactive maintenance, thus enhancing device reliability and reducing repair costs.
Implementation Method 1
A strain gauge is located in the plurality of layers between the bottom layer and the top layer, the strain gauge being configured to measure a strain of the electrically conducting substrate
Data Source
AI summary
An electrically conducting substrate includes a plurality of layers. A strain gauge is deposited on a layer of the plurality of layers. The strain gauge measures the stress and/or strain of the electrically conducting substrate. This allows the strain gauge to determine whether a stress or strain of the electrically conducting substrate has caused the electrically conducting substrate to deform, crack, or break.