Strain Gauge Housing Bonding for Accurate Gas Vessel Deformation Sensing
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Solution Overview
Problem
The challenge of bonding a strain gauge and associated components to a gas vessel quickly, simply, and effectively without impacting deformation measurements, while ensuring durability over 10 years, remains unsolved in existing methods.
Innovation Solution
A method involving the use of two adhesive means to fix a strain gauge and a housing to a gas vessel, allowing the housing to move relative to the strain gauge, with an electric cable connection, and maintaining a free space to prevent interference, ensuring the strain gauge deforms only with the vessel's deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the housing and strain gauge are bonded to the vessel in a single action, then the bonding procedure is simplified and productivity is improved, but the measurement precision deteriorates because correct bonding of the strain gauge is not guaranteed
Solution Approach 1:
The patent divides the bonding process into two separate steps: first bonding the strain gauge to the vessel, then bonding the housing to the vessel. This segmentation ensures that each component is bonded independently with proper attention to bonding quality, particularly for the strain gauge which requires precise bonding for accurate deformation measurement.
Solution Approach 2:
The strain gauge is bonded to the vessel in advance before the housing is bonded. This preliminary action allows the strain gauge to be positioned and bonded with the required precision first, and then the housing is added subsequently without interfering with the strain gauge bonding quality.
2Stability of the object's composition
If the housing is fixed rigidly to the strain gauge, then structural stability is improved, but the strain gauge deformation measurement deteriorates because the housing interferes with the gauge deformation
Solution Approach 1:
The patent introduces an intermediary element (adhesive layer or flexible connection) between the housing and strain gauge that allows the strain gauge to deform freely with the vessel while the housing remains structurally stable. This intermediary decouples the rigid connection that would otherwise constrain the strain gauge deformation.
Solution Approach 2:
The housing connection allows flexible deformation of the strain gauge through the use of flexible bonding material or thin film elements that can accommodate the gauge's deformation without transmitting rigid constraints from the housing, thereby maintaining both structural stability and measurement accuracy.
3Reliability
If the housing is bonded directly to the vessel covering the strain gauge, then protection and sealing are improved, but the strain gauge bonding quality deteriorates due to interference during bonding
Solution Approach 1:
The patent segments the bonding operations so that the strain gauge is bonded to the vessel first, with the housing not yet in position. Only after the strain gauge is properly bonded does the housing get bonded to cover the strain gauge. This sequential approach eliminates interference during the critical strain gauge bonding process while still providing protection and sealing.
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
Ensures accurate deformation measurement by the strain gauge, maintaining its integrity and functionality over time, without interference from the housing, thus providing reliable deformation data for gas vessels.
Implementation Method 1
the strain gauge being fixed to the vessel in such a way that it deforms with the vessel under the effect of the pressurized gas contained in the vessel
Implementation Method 2
A strain gauge is a sensitive element of which the resistance varies when it is deformed
Implementation Method 3
fixing the strain gauge to the vessel using a second adhesive means such as an adhesive
Data Source
AI summary
A method for fixing an assembly onto a gas vessel configured to contain a pressurized fluid. The assembly including a housing, an electronic acquisition board secured to the housing, and a strain gauge. The method including fixing the strain gauge to the vessel using a second adhesive means, the strain gauge being fixed to the vessel in such a way to allow deformation along with the vessel under the effect of the pressurized gas contained in the vessel. Electrically connecting the strain gauge and the electronic acquisition board using at least one electric cable thereby allowing the housing to be free to move relative to the strain gauge. Fixing the housing to the vessel using a first adhesive means so as to cover the strain gauge and thereby leaving a volume of air between the housing and the strain gauge and/or between the strain gauge and the electronic acquisition board.