Thermoplastic Composite Panel Assembly for Hollow 3D Structures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The high cost and labor-intensive processes of forming composite structures, such as those made from carbon fiber, limit their widespread adoption, and existing methods struggle to optimize strength-to-weight ratio and are prone to defects in complex structures, while injection molding results in weak structures and limited shape formation.
Innovation Solution
The use of composite panels made from fiber-reinforced thermoplastic materials, combined with composite blocks and braided sleeves, which are joined through welding or fusing processes, allowing for the creation of hollow, three-dimensional structures with enhanced strength and aesthetic capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple sheets of composite material are layered in a mold using conventional methods, then the structure can achieve desired strength and complex shapes, but the process becomes time-consuming, labor-intensive, and costly
Solution Approach 1:
The composite structure is divided into multiple pre-formed panels that are manufactured separately and then joined together. Each panel can be produced independently using efficient forming processes, and the final structure is assembled by joining these segmented components, thereby improving production efficiency while maintaining structural integrity
Solution Approach 2:
Composite panels are pre-formed with their final shapes and reinforcements before assembly. The panels are manufactured in advance with optimized fiber orientations and integrated reinforcement elements, eliminating the need for time-consuming layering during final structure assembly
2Strength
If conventional composite layering methods are used, then the structure can achieve desired strength, but additional reinforcement is required to provide impact resistance and acceptable product lifetime
Solution Approach 1:
Reinforcement elements are merged with the composite panels during the forming process, creating integrated structures where reinforcement and panel material become unified. This eliminates separate reinforcement components and reduces overall structural complexity while maintaining or enhancing strength and impact resistance
Solution Approach 2:
The invention uses composite materials with integrated reinforcement features, combining different fiber orientations and material properties within the panel itself. This allows the panel to inherently provide both load-bearing strength and impact resistance without requiring additional separate reinforcement layers
3Stability of the object's composition
If thermoset materials are used in composite structures, then the material can provide structural integrity, but the material becomes brittle and difficult to recycle
Solution Approach 1:
The invention transitions from thermoset materials to thermoplastic materials, changing the fundamental chemical parameter of the matrix material. Thermoplastics offer recyclability and reprocessability while maintaining structural integrity through optimized fiber reinforcement and forming processes
4Productivity
If injection molding is used to form structures, then the process is quick and cheap, but the structures formed are quite weak and certain three-dimensional shapes cannot be formed
Solution Approach 1:
The structure is segmented into multiple panels that can be formed using efficient processes and then joined together. This allows each panel to be optimized for its specific forming requirements while achieving high production speeds, and the joined structure attains the necessary overall strength
Solution Approach 2:
The invention uses composite materials with optimized fiber reinforcement in the formed panels. The composite structure provides the necessary strength and structural properties that simple injection-molded parts cannot achieve, while maintaining production efficiency through panel-based manufacturing
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 method reduces production costs and time while achieving high strength-to-weight ratios and impact resistance in complex shapes, overcoming the limitations of traditional composite forming methods.
Implementation Method 1
Each composite panel in a composite structure can be joined to at least one other composite panel by a welding or fusing process
Data Source
Figure 1~2
Figure 3A
Figure 3B
AI summary
Composite structures and methods of forming composite structures are provided. A composite structure as disclosed herein incorporates one or more composite structure components, such as composite panels (240A, 240B) and composite inserts (138). A composite panel is formed from one or more sheets of fiber reinforced thermoplastic material. Composite inserts can include one or more composite blocks or braided sleeves (138). A composite block (232) can be formed as a stacked or molded structure from trimmings or waste produced during the formation of the composite structures. A braided sleeve (138) can include a seamless, woven sleeve formed of reinforcing fibers and thermoplastic threads. In a completed composite structure, composite inserts are at least partially disposed within a volume defined by surfaces of composite panels. The various composite structures and inserts can be given a final shape and can be fused to one another in a molding and fusing step.