Elastic Material Evaluation via X-Ray Void Volume Change
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Solution Overview
Problem
Conventional methods for evaluating the performance of elastic materials, such as those using a Ramborn wear tester, fail to accurately predict the performance of actual products made from these materials.
Innovation Solution
A performance evaluation method involving the application of strain to form low-density portions in a test piece, followed by X-ray imaging at two different times to identify and measure the volume change of these portions, which serves as an indicator of material performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional wear testing methods (e.g., Ramborn wear tester) are used to evaluate elastic material performance, then the evaluation process is simple and established, but the performance results do not match actual product performance
Solution Approach 1:
The patent replaces conventional mechanical wear testing with a non-destructive X-ray imaging method to evaluate material performance. By using X-rays to visualize and measure low-density portion formation and growth, the method achieves more accurate performance prediction without requiring complex mechanical wear testing apparatus
Solution Approach 2:
The patent applies strain to the test piece before X-ray imaging to pre-form low-density portions, then measures their volume change over time. This preliminary strain application creates the structural changes that indicate material performance, allowing evaluation before actual wear occurs
2Reliability
If X-ray imaging is used to measure low-density portion volume change, then performance prediction accuracy is improved, but the measurement and evaluation process becomes more complex
Solution Approach 1:
The patent creates visual copies (projected images) of the test piece's internal structure through X-ray imaging. These images capture the low-density portions at different time points, allowing measurement of volume change without physically altering the sample or requiring complex in-situ measurement apparatus
Solution Approach 2:
The patent uses low-density portions as intermediary indicators of material performance. Instead of directly measuring wear or mechanical properties, the method measures the volume change of these internal structural features, which serve as a proxy for overall material performance and wear resistance
3Measurement precision
If strain is applied to form low-density portions and volume change is measured over time, then wear resistance prediction is improved, but the testing time and process duration increase
Solution Approach 1:
The patent applies strain periodically or at specific time intervals to the test piece, then performs X-ray imaging at corresponding time points. This periodic application of strain and measurement allows tracking of low-density portion evolution over time, providing wear resistance data without requiring continuous testing
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 method allows for a more accurate prediction of elastic material performance, particularly in terms of wear resistance, by quantifying the volume change of low-density portions, thereby improving the reliability of product design and manufacturing.
Implementation Method 1
a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a predetermined first time and at a second time after the first time
Data Source
AI summary
A performance evaluation method for elastic material including rubber or elastomer, the method includes: a step of applying a strain to a test piece made of an elastic material to form at least one low-density portion inside the test piece; after forming the low-density portion, a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a predetermined first time and at a second time after the first time; a step of identifying the low-density portion based on the projected images at the first time; a step of identifying the low-density portion based on the projected images at the second time; a step of identifying a volume change of the at least one low-density portion between the first time and the second time; and a step of outputting the volume change as one of indicators of performance of the elastic material.