Tip Indenting Apparatus Uniform High Temperature Testing
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Solution Overview
Problem
Current indenting apparatuses are not adapted for testing materials at very high temperatures, as they fail to maintain the tip and material at uniform high temperatures, leading to inaccurate mechanical property determination due to heat transfer issues during impact.
Innovation Solution
The apparatus features a holder and heating device for both the tip and the material, using a heat-conducting solid body with an annular sheath and electric heating members to ensure both are at the same temperature, with securing and immobilizing mechanisms to prevent displacement during testing, and a force sensor for precise force measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the material block is heated to high temperature without heating the tip, then the material reaches the desired test temperature, but heat transfer from the material to the unheated tip reduces the actual temperature during impact
Solution Approach 1:
The tip is heated to the target temperature before the impact test is performed. This preliminary heating action ensures that when the tip contacts the material block during impact, there is minimal temperature difference, preventing heat transfer that would alter the material's actual temperature and ensure accurate high-temperature mechanical property measurements
2Temperature
If independent heating devices are used for the tip and material block, then both can be heated to high temperature, but the device complexity increases
Solution Approach 1:
The heating device integrates multiple functions into a unified system: the holder simultaneously holds both the tip and material block, while the heating means (including annular heater and infrared heater) provide coordinated heating to both components. This merged design achieves uniform high-temperature conditions without requiring entirely separate independent heating systems
3Ease of operation
If the tip and material block are held in separate devices, then each can be independently controlled, but the heat transfer between unheated tip and heated material cannot be prevented
Solution Approach 1:
The holder integrates holding of both tip and material block in a single device, while the heating means provide coordinated thermal control to both components. This ensures they reach the same temperature together, preventing harmful heat transfer during impact while maintaining reliable temperature stability through unified thermal management
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 setup allows for accurate determination of mechanical properties at high temperatures by maintaining uniform temperature between the tip and material, reducing heat transfer errors and ensuring precise force application, thus providing reliable mechanical behavior data.
Implementation Method 1
heating means of annular structure suitable for tightly surrounding the side wall of the annular sheath and being in heat-conducting contact with the latter, said heating means comprising at least one electric heating member
Implementation Method 2
heat-conducting contact with the latter
Data Source
AI summary
The invention relates to a tip indenting apparatus for testing a block of material, characterized in that it comprises: a holder for the tip and a holder for a block of a material to be punched or scratched, said tip holder and said block holder each comprising a solid body made of heat conducting material; securing means for removably securing the tip or the block in thermal-conducting contact to said solid body; an annular sheath having a shape corresponding to that of said solid body and in which said solid body is provided; heating means comprising at least one electric heater; and means for assembling the solid body and the heating means; wherein, during a test, the tip can be heated at a predetermined temperature, in particular a temperature essentially equal to that of the block of material to be tested.