Multi-Layer X-Ray Test Body for Simultaneous Image Quality Assessment
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Solution Overview
Problem
Existing X-ray inspection systems face challenges in efficiently checking image quality across multiple regions of a test object, leading to time-consuming and less meaningful quality checks due to thermal drifts and the need for manual adjustments.
Innovation Solution
A test body with multiple layers, each mimicking a layer of the test object, is used to assess image quality across an entire plane or multiple planes simultaneously. This test body includes a solid spacer plate and test layers with holes of varying sizes, allowing for a single X-ray image to evaluate image quality, signal-to-noise ratio, and contrast-to-noise ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple regions of the test volume are checked one after another by moving the test body, then comprehensive image quality assessment is achieved, but the inspection time increases and thermal drifts affect reliability
Solution Approach 1:
The test body is segmented into multiple test layers (first test layer, second test layer, etc.) with different hole sizes and depths, allowing simultaneous assessment of image quality at multiple regions and depths within a single X-ray inspection, eliminating the need for sequential scanning
Solution Approach 2:
The test body extends in the depth direction with multiple layers at different positions, enabling three-dimensional image quality assessment. This adds the depth dimension to the assessment, allowing evaluation at multiple depths simultaneously rather than just at a single plane
2Area of stationary object
If the test body is moved to different points to check multiple regions, then complete coverage is achieved, but positioning complexity and time consumption increase
Solution Approach 1:
Multiple test regions and depths are merged into a single integrated test body structure. All test layers with different hole configurations are combined in one object, allowing comprehensive assessment without moving the test body to multiple positions
Solution Approach 2:
The test body serves multiple functions simultaneously: it assesses image quality at multiple regions, multiple depths, and under different absorption conditions all in one inspection. This multi-functionality eliminates the need for multiple separate test objects or sequential measurements
3Manufacturing precision
If resolution samples are used to adjust focus, then image quality can be optimized, but the process requires manual intervention and is time-consuming
Solution Approach 1:
The test body enables automatic image quality assessment by the X-ray system itself. The system can independently evaluate image quality parameters using the test body's known structure (hole positions, sizes, depths) without requiring manual measurement or operator intervention, enabling self-verification of imaging performance
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
The proposed solution enables rapid and reliable assessment of image quality across all regions of an X-ray image, reducing the time required for quality checks and minimizing the impact of thermal drifts, while ensuring consistent system performance.
Implementation Method 1
The area of application for the present disclosure is X-ray-based materials testing. The use of X-rays for imaging offers the possibility of examining hidden structures without destroying the test object.
Implementation Method 2
The material from which the first test layer is made has an absorption factor that corresponds to the absorption factor of the test subjects
Data Source
AI summary
A test body for checking image quality during an X-ray examination of a test object that has a first layer of test subjects to be checked and has an intermediate layer on which the test subjects are arranged is disclosed. The test body has a first test layer and a solid spacer plate arranged thereon. The thickness of the first test layer corresponds to the thickness of the test subjects in the test object, and the thickness of the spacer plate corresponds to the thickness of the intermediate layer. A plurality of first holes are formed in the first test layer. The material of the first test layer has an absorption factor that corresponds to the absorption factor of the associated test subjects. The material the spacer plate has an absorption factor that corresponds to the absorption factor of the intermediate layer.