Compton Scatter Inspection for Corrugated Pipe Blind Spots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for inspecting corrugated pipes in infrastructure, such as culverts and storm sewers, face challenges due to the geometry of corrugations, leading to blind spots and inaccurate data collection during visual and acoustic inspections, which can result in inadequate maintenance planning and increased risk of infrastructure failure.
Innovation Solution
The implementation of Compton Scatter (CS) inspection methods and systems that align radiation particle emission and backscattered photon detection along a scanning plane parallel to the orientation of corrugations in corrugated pipes, allowing for the generation of inspection data that effectively addresses the geometry-related drawbacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspection and acoustic inspection methods are used to inspect corrugated pipes, then inspection can be performed, but blind spots and inaccurate data collection occur due to the geometry of corrugations
Solution Approach 1:
The patent replaces mechanical inspection methods (visual inspection, acoustic inspection) with a radiation-based Compton scatter inspection system. The system uses radiation particles to interact with the corrugated pipe and surrounding soil, detecting backscattered photons to generate inspection data without being affected by the geometric limitations that plague mechanical inspection methods.
Solution Approach 2:
The patent changes the inspection approach by using radiation particles with specific energies and detecting backscattered photons at optimized angles. By adjusting radiation energy levels and detection geometry parameters, the system overcomes the blind spots created by corrugation geometry while maintaining detection capability.
2Measurement precision
If radiation particles are emitted perpendicular to the corrugations, then inspection can be performed, but artifacts are generated in the inspection data due to corrugation geometry
Solution Approach 1:
The patent introduces asymmetric geometry alignment by orienting the radiation emission and detection plane parallel to the corrugation orientation rather than perpendicular to it. This asymmetric alignment eliminates the symmetric artifacts that would otherwise be generated by the corrugation structure, producing cleaner inspection data.
Solution Approach 2:
The patent changes the inspection dimension by aligning the radiation beam and detection plane along the longitudinal dimension of the corrugations rather than across them. This dimensional reorientation allows the radiation to pass through the pipe wall without being repeatedly scattered by corrugation ridges, reducing artifact generation.
3Measurement precision
If the scanning plane is aligned parallel to the corrugations, then artifacts and blind spots are reduced, but the device complexity increases due to precise positioning requirements
Solution Approach 1:
The patent designs the scanning module and frame as integrated multi-functional units that simultaneously provide structural support, positioning reference, and radiation emission/detection functionality. This universal design reduces the need for separate complex positioning systems while maintaining the required parallel alignment with corrugations.
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 reduces artifacts and blind spots in inspection data, providing more accurate and comprehensive assessments of corrugated pipe integrity and surrounding soil conditions, enhancing maintenance planning and reducing the risk of infrastructure failure.
Implementation Method 1
emitting, outwardly from the interior of the corrugated pipe, a beam of radiation particles directed towards a given voxel positioned beyond an inner face of the cylindrical wall
Implementation Method 2
detecting backscattered photons scattered back from the given voxel and along the scanning plane
Data Source
AI summary
The method is for inspecting an infrastructure having a corrugated pipe at least partially surrounded by soil. The corrugated pipe has a cylindrical wall which is corrugated along a length thereof and forming a longitudinally extending series of corrugations. The method generally has the steps of emitting, outwardly from the interior of the corrugated pipe, a beam of radiation particles directed towards a given voxel positioned beyond an inner face of the cylindrical wall and along a scanning plane parallel to an orientation of individual ones of the corrugations of the cylindrical wall; detecting backscattered photons scattered back from the given voxel and along the scanning plane; and generating inspection data based on the detected backscattered photons associated with the given voxel for use in inspecting the corrugated pipe.