Polarimetric Imaging for Accurate Microtextured Region Quantification
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Solution Overview
Problem
Conventional methods for quantifying microtextured regions (MTRs) in materials like titanium are costly, time-consuming, and lack accuracy, particularly under cold dwell fatigue loading conditions, limiting their effectiveness in structural integrity analysis.
Innovation Solution
A polarimetric imaging system is used to capture images of samples illuminated with monochromatic polarized light, extracting azimuth and inclination data of the optic axis to quantify MTRs, leveraging the correlation between optic axis and basal pole in hexagonal crystal symmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to quantify microtextured regions, then measurement can be performed, but the process is costly, time-consuming, and lacks accuracy
Solution Approach 1:
The patent replaces conventional mechanical/physical measurement methods (such as microscopy combined with manual analysis) with an optical measurement system that uses polarized light and image processing to extract quantitative data about microtextured regions, thereby reducing time and cost while improving accuracy
Solution Approach 2:
The patent creates an optical copy or representation of the microtextured regions through polarized light imaging, allowing quantitative analysis to be performed on the captured images rather than requiring direct physical measurement of the actual microstructures, thus enabling faster and more accurate quantification
2Productivity
If conventional methods are used to quantify microtextured regions, then measurement can be performed, but the process is costly and time-consuming
Solution Approach 1:
The patent employs a polarimetric imaging system that can perform multiple functions: capturing optical properties, extracting polarization data, determining optic axis orientation, and quantifying microtextured regions all within a single integrated system, thereby improving productivity without proportionally increasing device complexity
Solution Approach 2:
The patent introduces polarized light as an intermediary medium between the microtextured regions and the detection system. The polarized light interacts with the microstructures to provide orientation information that can be captured and analyzed, simplifying the overall measurement process and improving efficiency
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
This approach provides accurate, efficient, and cost-effective quantification of MTRs, enabling improved structural integrity assessment by determining Euler angles for future analysis.
Implementation Method 1
a polarization state generator (e.g., linear polarizer) having a first polarization axis receives the emitted light from the light source and produces a polarized light from the received light
Implementation Method 2
an objective lens that focuses the redirected light onto a sample that has an optical anisotropy. Moreover, the objective lens receives a reflected light (which polarization state is changed as a function of the optical anisotropy) from the sample
Implementation Method 3
a polarization state analyzer that has a second polarization axis that is orthogonal or nearly orthogonal to the first polarization axis, and the analyzer receives the propagated reflected light from the beam splitter and produces a partially extinguished light
Data Source
AI summary
Images of samples that are illuminated with polarized light are captured. Azimuth and inclination data are extracted from the captured images. The azimuth and inclination data are used to quantify MTRs.