Specimen Storage Device for Thermal Expansion Control
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Solution Overview
Problem
Existing storage devices for specimens fail to maintain the axis of symmetry during temperature-controlled storage, leading to potential deformation and inaccurate test results in materials testing, as they do not allow for thermal expansion without causing lateral forces or warping.
Innovation Solution
A storage device with a recess and clamp design that allows the specimen to expand along its axis of symmetry while preventing lateral deformation, featuring a recess with a wide upper region and a groove to guide the specimen, ensuring even heating and preventing sticking or irreversible connection with the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the specimen is stored in a conventional storage device at elevated temperatures, then thermal aging investigation is enabled, but the axis of symmetry changes due to thermal expansion constraints causing lateral forces and warping
Solution Approach 1:
The storage device is divided into multiple regions: a first region with a support surface for the specimen, and a second region forming a lateral guide. This segmentation allows different parts of the specimen to experience different constraints - the first region allows free thermal expansion while the second region provides lateral guidance, resolving the contradiction between thermal aging capability and shape maintenance
Solution Approach 2:
The lateral guide structure acts as an intermediary element between the specimen and the storage device walls. It provides a controlled interface that allows the specimen to expand axially while preventing lateral warping, mediating between the thermal expansion requirement and the shape stability requirement
2Shape
If the specimen is constrained to prevent warping during storage, then shape stability is maintained, but thermal expansion is restricted causing internal stresses
Solution Approach 1:
Different regions of the storage device provide different qualities of constraint: the first region with the support surface provides minimal constraint allowing free expansion, while the second region with the lateral guide provides localized guidance only where needed. This local differentiation allows shape stability without excessive internal stress
3Temperature
If the specimen is allowed to expand freely during thermal storage, then thermal expansion is accommodated, but lateral deformation and warping occur
Solution Approach 1:
The storage device provides dynamic adaptability through its structured regions: the lateral guide in the second region dynamically adjusts to allow axial expansion while maintaining lateral guidance. This dynamic configuration accommodates thermal expansion without causing lateral deformation
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
The solution ensures that the specimen retains its shape and allows thermal expansion without warping, maintaining accurate force application during tests by preventing lateral deformation and ensuring even heating, thus providing reliable test results.
Implementation Method 1
the middle part of the specimen to be accommodated is spaced perpendicularly to the axis of symmetry to the walls of the recess
Implementation Method 2
Temperature-controlled storage of the materials to be tested
Data Source
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AI summary
A storage device (100) for storing a test specimen (200) is described, wherein the storage device (100) has an opening, the opening comprising an upper (101) and a lower region (103), the opening being shaped to receive the test specimen (200), the test specimen (200) having an upper part (201) and a middle part (203) adjoining the upper part (201) along its axis of symmetry (202), the walls of the opening being formed such that, when the test specimen (200) is received, the middle part (203) of the test specimen (200) being received is spaced from the walls of the opening perpendicular to the axis of symmetry (202), the walls of the upper region (101) forming a lateral guide (105) for the upper part (101) of the test specimen (200) to allow movement of the upper part (201) of the specimen (200) along the axis of symmetry (202) of the specimen (200),wherein the lateral guidance (105) is provided by the walls of the upper area (101) bearing against the upper part (201) of the specimen (200) to be received.