Rail Damage Detection via Elastic Wave Source Positioning
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Solution Overview
Problem
Conventional methods for detecting rail abnormalities, such as rail breakage, often fail to detect issues early enough or require numerous sensors, making it difficult to determine the damaged area effectively, which can lead to serious accidents.
Innovation Solution
A damaged region determination system that uses a plurality of sensors to detect elastic waves generated by electrolytic corrosion in rails, a position locator to determine the source of these waves, and a determiner to identify the damaged region based on the wave sources, allowing for early detection of rail damage before breakage occurs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to detect rail breakage, then detection capability is achieved, but detection timing is too late (after damage occurs)
Solution Approach 1:
The system performs preliminary detection of rail abnormalities by monitoring elastic waves before actual breakage occurs. The elastic wave sensors detect changes in the rail structure at early stages of damage, enabling preventive maintenance before critical failure happens.
2Loss of time
If conventional early detection methods are used, then early detection capability is improved, but the number of sensors required increases significantly
Solution Approach 1:
The elastic wave sensors serve multiple functions: detecting rail breakage, identifying abnormal sounds, locating damage positions, and determining damage areas. This multi-functionality reduces the need for separate detection systems and minimizes the total number of sensors required.
Solution Approach 2:
The system combines detection, positioning, and damage area determination functions into a single integrated system using elastic wave sensors. By merging these functions, the patent reduces sensor quantity while maintaining comprehensive monitoring capability.
3Reliability
If more sensors are installed to improve detection coverage, then detection capability is improved, but system complexity and cost increase
Solution Approach 1:
The patent replaces complex multi-sensor mechanical detection systems with an elastic wave-based detection system. This substitution simplifies the overall system while maintaining or improving detection reliability through the physics-based elastic wave propagation characteristics.
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 early detection of rail damage, reducing the risk of accidents by accurately determining the damaged area through the analysis of elastic waves, thereby facilitating timely countermeasures.
Implementation Method 1
a plurality of sensors detects elastic waves generated in a target object related to a railway
Data Source
AI summary
According to one embodiment, a damaged region determination system of the embodiment includes a plurality of sensors, a position locator, and a determiner. The plurality of sensors detects elastic waves generated in a target object related to a railway which is a determination target of a damaged region. The position locator locates positions of sources of a plurality of elastic waves based on the plurality of elastic waves detected by each of the plurality of sensors. The determiner determines the damaged region in the target object based on the positions of the sources of the plurality of elastic waves.