Bond Strength Testing Inserts and Force Adapter
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for testing shear bond strength between cement and metal surfaces in the oil and gas industry face challenges such as boundary effects, misalignment of force application, and complexity in data accuracy, leading to inaccurate measurements and increased costs due to time-consuming calibration and grinding processes.
Innovation Solution
A sample preparation device with inserts that protrude into the container during curing, minimizing boundary effects and facilitating uniform stress application, combined with a self-calibrating force adapter to ensure accurate alignment and quick sample production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sample preparation methods are used without inserts, then the sample preparation process is simpler, but boundary effects occur at the ends of the sample causing inaccurate bond strength measurements
Solution Approach 1:
The patent introduces inserts as intermediary elements placed at the ends of the container. These inserts act as mediators between the loading device and the cement sample, providing a transition zone that eliminates boundary effects. The inserts are positioned such that their ends are spaced from the container ends, creating a buffer zone that prevents stress concentration and ensures uniform stress distribution across the sample, thereby improving measurement accuracy without significantly complicating the overall device structure.
2Measurement precision
If calibration of force alignment is performed manually, then the alignment can be adjusted, but the process is time-consuming and needs to be repeated several times
Solution Approach 1:
The patent implements a self-calibrating mechanism through the force adapter assembly. The adapter automatically adjusts and maintains proper force alignment through its mechanical design, which includes features that self-correct for misalignment. This self-service capability eliminates the need for repeated manual calibration operations, significantly reducing the time required while maintaining high measurement precision. The system essentially calibrates itself through its structural design rather than requiring external intervention.
3Measurement precision
If multiple measurements are taken to account for boundary effects, then data accuracy can be improved, but the complexity of data processing increases
Solution Approach 1:
The patent extracts and removes the source of boundary effects by using inserts that are spaced from the container ends. By taking out the problematic boundary regions through proper insert positioning, the need for multiple measurements and complex data processing to account for boundary effects is eliminated. The inserts create a clean test zone where boundary effects do not occur, allowing for accurate measurements with straightforward data processing.
4Measurement precision
If grinding of sample ends is performed to remove boundary effects, then measurement accuracy is improved, but the process becomes time-consuming and adds extra costs
Solution Approach 1:
The patent performs preliminary action by pre-positioning the inserts at the correct locations before the cement sample is placed in the container. This preliminary setup ensures that when the cement hardens, the boundary effects are already eliminated by the insert positioning, eliminating the need for subsequent grinding operations. The boundary conditions are prepared in advance through insert placement rather than requiring post-curing material removal, significantly improving sample preparation speed while maintaining measurement accuracy.
Data Source
AI summary
The invention pertains to performing bonding strength testing between a test material and a container. A sample preparation device to make a test sample was disclosed. This device included a container with an insert on each end. The inserts have a portion that protrudes into the container. When test material is added to the sample preparation device, a groove was formed in test sample. These grooves reduce the amount of boundary effects that are present during testing. A system and method for performing bond strength testing was also disclosed. In this system, a test sample was formed using the sample preparation device. This is placed upon a support and a half-spherical force applier is placed on top of the test sample. A press is used to apply force to the force applier and indirectly to the test sample.