Flash Fire Manikin Articulation for Dynamic Clothing Testing
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Solution Overview
Problem
Current methods for testing the thermal protective performance of clothing using stationary manikins fail to accurately evaluate the performance of garments in dynamic fire scenarios, as they do not account for the mechanical stresses and movements associated with escaping a flash fire.
Innovation Solution
A dynamic manikin system that simulates realistic movements such as walking or running while exposed to flames, incorporating an instrumented manikin with an articulation system, electric motors, sensors, and data acquisition components to assess thermal protection properties under controlled fire conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stationary manikin is used for testing, then the test setup is simple and stable, but the evaluation accuracy of clothing performance in realistic fire scenarios is poor
Solution Approach 1:
The patent transforms the stationary manikin into a dynamic system by incorporating an articulation system with multiple joints and segments that can simulate human movements such as running, walking, and bending. This allows the manikin to perform realistic escape motions during flash fire exposure, thereby improving the evaluation accuracy of clothing thermal protective performance under dynamic conditions.
Solution Approach 2:
The articulation system is divided into multiple independent segments including head, torso, arms, and legs with various joints (shoulder, elbow, hip, knee, ankle). Each segment can be controlled independently to simulate complex human movement patterns, enabling realistic dynamic testing while maintaining manageable system complexity through modular design.
2Adaptability or versatility
If a dynamic articulation system is added to the manikin, then the simulation of realistic fire escape movements is improved, but the device complexity and mechanical stress on components increase
Solution Approach 1:
The articulation system is designed with universal joints and standardized connection interfaces that can accommodate various movement types (running, walking, bending, twisting) using the same basic mechanical components. This multi-functional design enables diverse movement simulations without proportionally increasing system complexity.
Solution Approach 2:
The system uses adjustable mechanical parameters such as joint range of motion, segment masses, and connection rigidities to simulate different human movement patterns and anatomical variations. By changing these parameters rather than redesigning the entire articulation system, the patent achieves versatility with controlled complexity.
3Reliability
If the manikin undergoes dynamic motion during fire exposure, then the thermal protection evaluation becomes more realistic, but the mechanical stress on the garment and test system integrity increases
Solution Approach 1:
The articulation system incorporates shock-absorbing elements and compliant joints that can withstand the mechanical stresses generated during dynamic movement without transmitting excessive forces to the garment. This pre-engineered stress management protects the garment integrity while maintaining test reliability.
Solution Approach 2:
The patent uses a simplified mechanical articulation model that replicates essential human movement characteristics without fully reproducing all biological complexities. This copied approximation provides sufficient realism for thermal protection evaluation while minimizing unnecessary mechanical stress on the test garment.
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 a comprehensive evaluation of thermal protection in fire-resistant clothing by simulating dynamic movements and mechanical stresses, providing accurate predictions of burn injuries and assessing the integrity of garments under realistic fire escape conditions.
Implementation Method 1
at least one electric motor... is designed to drive the plurality of articulation components to move the instrumented manikin to simulate at least one dynamic motion
Implementation Method 2
at least one flame generation component... generate a flash fire
Implementation Method 3
The at least one sensor is operable to capture heat data including temperature, heat flux, and heat distribution generated by the at least one flame generation component
Data Source
AI summary
A flash fire instrumented manikin articulation system designed to evaluate the thermal protective performance of protective clothing when exposed to flames. The flash fire instrumented manikin articulation system includes an instrumented manikin and an articulation system designed to simulate exposure to a flash fire and simulate dynamic movement including walking and jogging.