Terahertz Polarization Intensity for Dimensional Convergence Estimation
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Solution Overview
Problem
Conventional methods for analyzing the internal state of objects using terahertz waves cannot estimate dimensional changes over time, despite being able to analyze internal defects and strains.
Innovation Solution
A method involving irradiating molded articles with terahertz waves at multiple positions and orientations, measuring polarization intensities, and determining correlations between these intensities to estimate dimensional changes, which correlates with the convergence of dimensional changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional terahertz wave analysis is used to examine internal state, then internal defects and strains can be analyzed, but dimensional changes over time cannot be estimated
Solution Approach 1:
The patent changes the measurement parameter from simple terahertz wave transmission intensity to polarization intensity of transmitted terahertz waves. This parameter change enables the detection of dimensional changes over time, as polarization intensity is sensitive to internal stress distribution and molecular orientation, which correlate with dimensional stability. The system measures polarization intensity at multiple positions and orientations to comprehensively assess dimensional convergence.
2Measurement precision
If multiple positions and orientations are measured to improve dimensional change estimation accuracy, then convergence prediction improves, but measurement complexity increases
Solution Approach 1:
The patent segments the measurement process into multiple discrete positions and orientations on the molded article. By dividing the measurement into systematic segments (multiple positions × multiple orientations), the system achieves comprehensive coverage of the article's internal stress state. This segmentation approach manages complexity by organizing measurements in a structured manner while maintaining high estimation accuracy.
Solution Approach 2:
The terahertz wave measurement system is designed to perform multiple functions: it measures polarization intensity at various positions and orientations, and this same measurement approach can be applied to different types of molded articles. The universal measurement methodology allows the system to estimate dimensional convergence for various geometries and materials without requiring fundamentally different measurement approaches.
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 estimation of dimensional changes in molded articles over time, allowing for the prediction of when changes have reached convergence, thereby addressing the limitations of existing terahertz wave analysis techniques.
Implementation Method 1
measuring polarization intensities of the terahertz waves transmitted through or reflected from the molded article
Implementation Method 2
irradiating a molded article with terahertz waves at multiple positions thereon, wherein the molded article is irradiated with the terahertz waves at each position thereon in multiple orientations about an optical axis
Data Source
AI summary
An objective of the present invention is to provide a method, or the like, for estimating the convergence of dimensional changes in a molded article over time, by utilizing the polarization intensity of terahertz waves. The present invention provides a method for estimating the convergence of changes in the dimensions of a molded article over time, the method comprising: irradiating a molded article with terahertz waves at multiple positions thereon, wherein the molded article is irradiated with the terahertz waves at each position thereon in multiple orientations about the optical axis; measuring polarization intensities of the terahertz waves transmitted through or reflected from the molded article; and determining whether the polarization intensities at the multiple positions are in a given relationship with each other.