Internal Steel Breaking Time Estimation in Concrete
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Solution Overview
Problem
Existing methods for detecting internal steel breaking time in concrete structures due to hydrogen embrittlement are inefficient, as they only determine the presence of breakage and not the time frame, making it difficult to predict when internal steel will break, especially in varying environmental conditions.
Innovation Solution
A device and method that calculate the internal steel breaking time by determining the composition ratios of rust from broken and unbroken surfaces, using pre-established characteristics to calculate corrosion times, and then subtracting these times to estimate the breaking time, allowing for preventive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional non-destructive inspection technology is used to detect internal steel breakage, then the presence or absence of breakage can be detected, but the breaking time cannot be determined
Solution Approach 1:
The patent applies preliminary action by collecting rust samples from internal steel at different locations (broken surface and non-broken surface) before the actual breakage occurs. By analyzing the composition ratios of these rust samples and comparing them with pre-established characteristics, the system can estimate the breaking time in advance, thus preventing the loss of breaking time information that would occur with conventional inspection methods.
2Productivity
If rapid detection of internal steel breakage is performed in each installation environment, then breakage can be detected quickly, but significant effort and resources are required
Solution Approach 1:
The patent applies copying by using rust composition ratio characteristics as a simplified model or representation of the complex corrosion and breakage process. Instead of performing complex inspections, the system collects rust samples, determines their composition ratios, and compares them with pre-established characteristics. This copying approach enables rapid breakage detection without requiring significant inspection effort or complex equipment.
3Reliability
If preventive maintenance is to be appropriately performed, then the breaking time of internal steel must be known, but conventional methods cannot provide this information
Solution Approach 1:
The patent applies feedback by establishing a closed-loop system where rust composition ratios are continuously monitored and compared with pre-established characteristics. The comparison results provide feedback about the current corrosion state and estimated breaking time, which then informs maintenance decisions. This feedback mechanism enables appropriate preventive maintenance timing by providing actual breaking time estimates rather than relying on conventional methods that cannot provide this information.
Data Source
AI summary
A composition ratio calculating unit configured to calculate a first composition ratio that is a ratio of substance quantities of rust collected from a broken surface of internal steel of an updated old concrete structure and a second composition ratio that is a ratio of substance quantities of rust collected from a surface different from the broken surface, a composition ratio calculating unit configured to calculate a first corrosion time corresponding to the first composition ratio and a second corrosion time corresponding to the second composition ratio from characteristics representing a relation between a first corrosion time and the first composition ratio and a relation between a second corrosion time and the second composition ratio, respectively, and a breaking time calculating unit configured to calculate a time for the internal steel to break by subtracting the first corrosion time from the second corrosion time are included.