Quantitative Flexural Property Evaluation Device
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Solution Overview
Problem
Current methods for evaluating the flexural properties of flexible display materials and artificial muscles are qualitative, making it difficult to reliably assess their kinetic characteristics and material suitability for various electronic devices, especially when bent or folded.
Innovation Solution
A device and method for quantitatively evaluating flexural properties using a holder, clamp, and pressing part to measure strain, folding stress, and folding modulus by adjusting the bending angle and curvature radius of a specimen, allowing for precise evaluation of materials with varying thicknesses and ductility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If qualitative evaluation methods (such as counting bending numbers) are used to assess flexural properties, then the evaluation process is simple, but the measurement precision and reliability of flexural property assessment are insufficient
Solution Approach 1:
The patent replaces subjective qualitative evaluation with objective quantitative measurement using a mechanical testing system. The evaluation device applies controlled bending forces and measures specific parameters (bending stress, strain, curvature radius) to calculate flexural properties numerically, eliminating the imprecision of manual counting methods while maintaining operational feasibility through automated measurement and calculation protocols
Solution Approach 2:
The patent transforms the evaluation approach by changing from counting discrete bending events to measuring continuous physical parameters during bending. By monitoring bending stress, strain, curvature radius, and other quantitative parameters throughout the bending process, the system captures the true flexural behavior of materials, enabling precise comparison between different materials and conditions
2Measurement precision
If quantitative evaluation of flexural properties is implemented, then the measurement precision and reliability improve, but the device complexity increases
Solution Approach 1:
The evaluation device is divided into distinct functional modules: a holder for supporting the specimen, a clamp for fixing one end, and a pressing part for applying controlled bending force. This segmentation allows each component to perform its specific function efficiently and enables independent adjustment and calibration of each module, reducing overall system complexity while maintaining measurement precision
Solution Approach 2:
The patent introduces a pressing part as an intermediary element between the testing system and the specimen. This pressing part applies controlled bending forces through defined geometric contact, mediating the transformation of applied force into measurable bending parameters. The intermediary structure simplifies the measurement process by creating well-defined stress states that are easier to quantify and analyze
3Stability of the object's composition
If artificial muscles are evaluated using quasi-static tension and shrinkage methods, then the test conditions are controlled, but the ability to predict rapid flexural properties corresponding to biological muscles is lost
Solution Approach 1:
The patent transitions from static quasi-static testing to dynamic bending evaluation. By implementing controlled bending at various speeds and measuring the resulting flexural properties, the system captures the rate-dependent behavior of materials. This dynamic approach allows prediction of rapid flexural properties by analyzing how material response changes with bending velocity, bridging the gap between controlled lab conditions and rapid biological muscle behavior
Solution Approach 2:
The patent changes the testing parameters from slow quasi-static loading to bending tests conducted at multiple speeds. By varying the bending velocity parameter and measuring corresponding flexural properties, the system establishes relationships between loading rate and material response. This enables prediction of rapid flexural behavior through extrapolation from controlled multi-speed testing data
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
Enables accurate and standardized quantification of flexural properties across a wide range of bending angles, effectively addressing the limitations of existing qualitative evaluation methods and improving material selection for flexible displays and artificial muscles.
Implementation Method 1
a pressing part pressing a second side of the specimen which is opposite to the first side and disposed upper than the first side of the specimen to bend the specimen
Data Source
AI summary
An evaluating device of a flexural property includes a holder, a body disposed on the holder and capable of being moved along with a length of direction of the holder, a clamp coupled to the body to be rotated on the body and fixing a first side of the specimen to be evaluated, and a pressing part disposed over the clamp and pressing a second side of the specimen opposite to the first side and disposed upper than the first side of the specimen to bend the specimen, and an evaluation method of a flexural property of the bent specimen using the same.