3D Anatomical Jig Testing for Cushioning Component Durability
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Solution Overview
Problem
Current methods for testing cushioning components lack accuracy in replicating in-use conditions, leading to inadequate assessment of durability and failure modes, particularly in terms of multi-axial forces and cyclic loading.
Innovation Solution
A testing apparatus featuring a three-dimensional anatomically-shaped jig and a base, actuated by an electronic controller, which mimics in-use conditions through multi-axial deformation, cyclic compression, and controlled environmental conditions to simulate the stresses and loads experienced by cushioning components in their intended applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional testing methods are used for cushioning components, then the testing process is simple, but the accuracy in replicating in-use conditions is insufficient
Solution Approach 1:
The patent uses a three-dimensional anatomically-shaped jig that replicates the actual body part geometry (foot, hand, or other anatomical structures) to copy real-world contact conditions. This allows the testing apparatus to accurately reproduce in-use conditions without requiring actual human subjects, thereby improving measurement precision while maintaining manageable device complexity through standardized test fixtures.
Solution Approach 2:
The patent transitions from traditional uniaxial compression testing to multi-axial loading by applying forces in multiple directions simultaneously. The testing apparatus can apply compression, shear, and torsional loads concurrently to replicate the complex stress states experienced by cushioning components during actual use, significantly improving the accuracy of durability assessment.
2Reliability
If traditional compression testing is used, then the testing method is simple, but the assessment of multi-axial forces and failure modes is inadequate
Solution Approach 1:
The patent employs dynamic loading protocols that replicate real-world usage patterns including impact events, cyclic loading, and varying force magnitudes. The testing system can apply controlled dynamic loads that mimic actual service conditions, enabling more accurate prediction of cushioning component durability and failure modes compared to static testing methods.
Solution Approach 2:
The testing apparatus implements cyclic loading sequences that reproduce the repetitive nature of actual use conditions. By applying periodic compression and decompression cycles, as well as repeated impact events, the system accelerates wear and failure processes while maintaining representative stress patterns, thereby improving reliability assessment efficiency and accuracy.
3Reliability
If basic compression testing is performed, then the testing time is short, but the identification of failure modes is limited
Solution Approach 1:
The patent employs accelerated testing protocols that apply elevated stress levels and increased loading frequencies to rapidly induce failure modes. By skipping through intermediate stages of degradation through aggressive yet controlled loading, the system identifies failure mechanisms in compressed timeframes while maintaining representative failure patterns that would occur under normal use conditions.
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 approach enables more accurate and efficient testing of cushioning components by replicating in-use conditions, allowing for the identification of failure modes and improving the reliability assessment of these components.
Implementation Method 1
An actuator is operatively connected to at least one of the jig and the base and is activatable to move at least one of the jig and the base toward and away from the other of the jig and the base to repeatedly contact the cushioning component and the jig with one another
Implementation Method 2
mimics in-use conditions through multi-axial deformation, cyclic compression, and controlled environmental conditions to simulate the stresses and loads experienced by cushioning components
Data Source
AI summary
An apparatus for testing a cushioning component for a body part includes a jig that has a three-dimensional anatomical shape. A base is configured to support the cushioning component. An actuator is operatively connected to at least one of the jig and the base and is activatable to move said one of the jig and the base toward and away from the other of the jig and the base to repeatedly contact the cushioning component and the jig with one another. An electronic controller has a processor that executes a stored algorithm. The algorithm has a test condition substantially equivalent to an expected in-use condition of the cushioning component. The electronic controller activates the actuator to move the jig and/or the base according to the algorithm. A method of testing a cushioning component is implemented.