Helicoidal Composite Materials Impact Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing composite materials struggle with impact resistance and damage tolerance, often compromising other mechanical properties like tensile and compression strength.
Innovation Solution
The development of helicoidal materials with enhanced spiraling pitches, nanomaterials, thin-ply uni-directional (TPUD) and woven fabrics, and hybrid fiber reinforced structures, which are designed to absorb and dissipate impact forces more efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional composite materials are used to improve impact resistance, then damage tolerance is enhanced, but tensile and compression strength are compromised
Solution Approach 1:
The patent employs a multi-layer composite structure combining metal layers with polymer matrix composite layers. The metal layers (e.g., aluminum, titanium) provide ductility and impact energy absorption through plastic deformation, while the polymer matrix composite layers (e.g., carbon fiber reinforced) contribute high tensile and compression strength. This composite approach allows the material system to simultaneously achieve impact resistance and maintain strength properties that neither material could provide alone.
Solution Approach 2:
The composite material is divided into distinct functional layers: metal layers for impact absorption and polymer matrix composite layers for strength provision. This segmentation allows each layer to perform its specialized function optimally - the metal layers undergo controlled plastic deformation to absorb impact energy, while the composite layers maintain structural integrity and resist tensile/compression loads.
2Strength
If thicker composite plies are used to increase strength, then mechanical properties improve, but impact resistance decreases
Solution Approach 1:
Instead of using thick monolithic plies, the patent segments the structure into multiple thin layers with alternating metal and polymer matrix composite materials. This segmentation allows the metal layers to absorb impact energy through plastic deformation while the composite layers provide strength, achieving both impact resistance and mechanical strength without relying on thick plies.
Solution Approach 2:
The alternating layer structure of metal and polymer matrix composite creates a composite material system where the metal provides ductility and impact absorption, while the composite layers provide high strength. This composite approach enables the structure to achieve both impact resistance and mechanical strength properties that would be contradictory in a single-material thick-ply design.
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
These helicoidal materials demonstrate improved impact resistance, crack arresting capabilities, and interlaminar load sharing, allowing for the creation of lighter, stronger composite products.
Implementation Method 1
The spiral formed from the assembly of these pitched fibers can be tuned to a specific wavelength to dampen propagating shock waves initiated by ballistics, strike forces or foreign material impacts
Implementation Method 2
can have matrix additives to toughen and arrest propagation of catastrophic fractures
Implementation Method 3
The spiral formed from the assembly of these pitched fibers can be tuned to a specific wavelength to dampen propagating shock waves
Data Source
AI summary
Described herein are details for designing and manufacturing enhanced shock and impact resistant helicoidal lay-ups by combining nanomaterials, variable pitch and partial spirals, Thin unidirectional fiber plies, hybrid materials, and/or curved fibers within a ply. The helicoidal structures created in the prescribed manners can be tuned and pitched to desired wavelengths to dampen propagating shock waves initiated by ballistics, strike forces or foreign material impacts and can arrest the propagation of fractures including catastrophic fractures. These enhancements open the helicoidal technology up for use in such applications as consumer products, protective armor, sporting equipment, crash protection devices, wind turbine blades, cryogenic tanks, pressure vessels, battery casings, automotive/aerospace components, construction materials, and other composite products.