Height Difference Measurement for Structure Flexural Strength
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Solution Overview
Problem
Current methods for assessing the material strength of structures, such as resin concrete manholes, are either costly and time-consuming (destructive tests) or require specialized equipment and preprocessing (non-destructive ultrasonic measurements), making it impractical to evaluate the flexural strength of large numbers of structures like 100,000 communication manholes across the country.
Innovation Solution
A measurement device and system that acquires a height difference in vertical displacement between two points on a structure's bottom surface to estimate material flexural strength, utilizing a simple length measurement approach, which includes a height difference acquisition unit and a material flexural strength calculation unit, and can be implemented using a program to function as a computer-based measurement tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If destructive tests are performed to directly examine material strength, then measurement precision is improved, but productivity deteriorates and object-generated harmful factors worsen
Solution Approach 1:
The patent replaces direct mechanical strength testing with a measurement system that uses optical or electromagnetic fields to measure deformation. The system measures the deformation amount of a structure under known loading conditions and calculates material strength from these measurements, avoiding the need for destructive mechanical testing while maintaining measurement accuracy.
Solution Approach 2:
The patent introduces deformation measurement as an intermediary parameter to indirectly determine material strength. Instead of directly measuring strength through destructive testing, the system measures deformation (a non-destructive parameter) and uses it to calculate the material strength, thus resolving the contradiction between non-destructive measurement and measurement accuracy.
2Object-affected harmful factors
If non-destructive ultrasonic measurement is used, then object-generated harmful factors are reduced, but device complexity and ease of operation worsen
Solution Approach 1:
The patent extracts the essential measurement function from complex ultrasonic equipment and implements it using simpler measurement means. By focusing only on the necessary deformation measurement capability and removing unnecessary ultrasonic processing functions, the system achieves non-destructive measurement with reduced device complexity.
Solution Approach 2:
The patent employs simpler, more affordable measurement equipment rather than expensive ultrasonic testing devices. The system uses basic sensors and calculation algorithms that are less costly and easier to operate, making the measurement process more accessible while still achieving non-destructive strength assessment.
3Object-affected harmful factors
If non-destructive ultrasonic measurement is performed, then object-generated harmful factors are reduced, but loss of time worsens
Solution Approach 1:
The patent skips the time-consuming preprocessing steps required by ultrasonic measurement, such as surface preparation and coupling agent application. By using a measurement system that requires minimal or no preprocessing, the system achieves non-destructive measurement with significantly reduced measurement time.
Solution Approach 2:
The patent performs preliminary calculation of material strength based on pre-established relationships between deformation and strength. By having the calculation algorithm ready and the measurement system configured in advance, the system可以快速完成测量和计算，减少现场测量时间。
Data Source
AI summary
There is provided a measurement device (1020) including: a height difference acquisition unit (131) that acquires a height difference between two points on a bottom surface of a structure; and a material flexural strength calculation unit (141) that calculates material flexural strength of the structure based on the height difference.