Digital Image Correlation for Thermal Deformation and Water Absorption
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Solution Overview
Problem
Existing methods fail to accurately evaluate the relationship between thermal deformation and water absorption rate in materials containing organic compounds, as these properties are often assumed to be independent, despite potential correlations.
Innovation Solution
A method involving a preparation step with a moistened member of known water absorption rate, followed by heating and cooling, and measurement using digital image correlation to assess deformation rates and derive thermal expansion coefficients, allowing for evaluation of both independent and correlated thermal deformation and water absorption scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If thermal deformation and water absorption rate are assumed to be independent, then measurement and evaluation are simplified, but measurement accuracy deteriorates when the properties are actually correlated
Solution Approach 1:
The patent segments the measurement process into distinct steps: preparing members with different water absorption rates, performing heating/cooling cycles, measuring deformation rates, and measuring water absorption rates. This segmentation allows independent measurement of each property while maintaining the ability to evaluate their relationship, resolving the contradiction between measurement simplicity and accuracy.
Solution Approach 2:
The measurement method is designed to be universally applicable to both cases where thermal deformation and water absorption are independent and cases where they are correlated. The same procedure can evaluate both scenarios without requiring different measurement approaches, achieving both simplicity and accuracy.
2Measurement precision
If a comprehensive measurement method evaluating both independent and correlated cases is implemented, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent employs dynamic heating and cooling cycles to induce thermal deformation while simultaneously measuring both deformation rates and water absorption rates. This dynamic approach allows the measurement system to capture the relationship between thermal and moisture effects under varying conditions, achieving high measurement precision through controlled dynamic testing.
Solution Approach 2:
The measurement method utilizes parameter changes in temperature and moisture content to evaluate the relationship between thermal deformation and water absorption. By systematically varying temperature during heating/cooling cycles and measuring corresponding deformation and mass changes, the method achieves comprehensive evaluation without requiring overly complex measurement systems.
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 evaluation of the relationship between deformation and water absorption rates in materials with organic compounds, regardless of the correlation between thermal deformation and water absorption, facilitating the selection of appropriate materials for electronic component devices.
Implementation Method 1
heating and cooling step of performing heating and then cooling the member
Implementation Method 2
measuring a deformation rate of the member using a digital image correlation method
Data Source
AI summary
A method of measuring physical properties includes: a preparation step of preparing a moisened member containing an organic material and having a known water absorption rate and a known mass; a heating and cooling step of performing cooling after heating the member; and a measurement step of measuring a mass of the member after cooling the member in the heating and cooling step, in which in the heating and cooling step, a deformation rate of the member is measured using a digital image correlation method.