Self-Healing Polymer Target with Thermochromic Feedback
Solution Overview
Problem
Current shooting targets lack clear and precise visual feedback of bullet strikes, particularly in indoor and close-range settings where steel targets are unsafe due to fragmentation, and paper targets require frequent intervention for scoring.
Innovation Solution
A self-healing target with reversible thermochromic pigment that changes color upon impact, providing immediate and precise visual feedback of the strike location, and 'resets' as the temperature returns to ambient, eliminating the need for intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steel targets are used, then audible and visual feedback and durability are improved, but dangerous spatter and fragmentation occur making them unsafe for indoor use
Solution Approach 1:
The patent changes the material parameter from steel to self-healing polymer, fundamentally altering the target's mechanical properties to eliminate fragmentation while maintaining durability and adding visual feedback capabilities through thermochromic and piezochromic materials
Solution Approach 2:
The patent uses composite materials by combining self-healing polymer with thermochromic and piezochromic materials to create a multi-functional target that provides both safety (no fragmentation) and enhanced functionality (visual feedback and self-healing)
2Ease of manufacture
If paper targets are used, then simplicity and low cost are achieved, but limited feedback and frequent manual intervention are required
Solution Approach 1:
The patent implements self-service by enabling the target to automatically indicate hits through color-changing materials and automatically reset through self-healing properties, eliminating the need for manual scoring and target replacement
Solution Approach 2:
The patent applies color changes by incorporating thermochromic and piezochromic materials that change color upon impact, providing automatic visual feedback that eliminates manual scoring requirements
3Reliability
If self-healing polymer targets are used, then durability and safety are improved, but precise point of impact detection becomes difficult
Solution Approach 1:
The patent solves the point of impact detection problem by incorporating thermochromic and piezochromic materials that change color at the strike location, providing clear visual feedback while maintaining the safety and self-healing properties of polymer material
4Quantity of substance
If traditional targets are used, then initial cost is low, but frequent replacement increases long-term waste and cost
Solution Approach 1:
The patent implements self-service through self-healing properties that automatically repair damage, dramatically extending target life and reducing the frequency of replacement and associated waste
Solution Approach 2:
The patent applies discarding and recovering by enabling the target to recover from damage through self-healing and color-reset mechanisms, keeping the target in service much longer and reducing disposal frequency
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 target offers clear and instantaneous visual confirmation of shot placement, extending its useful life and reducing waste, while being safe for indoor use and suitable for both short and long-range shooting.
Implementation Method 1
the first coating is a reversible thermochromic pigment, wherein the thermochromic pigment has a first activation temperature
Implementation Method 2
the first coating is a piezochromic material, wherein the first coating has a first activation pressure
Implementation Method 3
Wherein the layer of polymer material has self-healing properties
Data Source
AI summary
A hit-indicating target comprising; a layer of polymer material, having a first side and a second side; and a first coating of thermally activated pigment applied to the first side of the layer of polymer material, wherein the first coating has an activation temperature.