Variable-Cross-Section Composite Pipe for Strength and Flow Control
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Solution Overview
Problem
Existing composite fluid conduits lack the ability to adapt their cross-sectional form along their length to optimize strength and flow profiles, leading to inefficiencies in withstanding operational stresses and accommodating various applications and devices.
Innovation Solution
A method involving an inner pipe with varying cross-sectional forms along its length, achieved through moulding and reforming processes, combined with the application of fibre-reinforced composite materials to enhance strength and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a uniform cross-sectional composite pipe is used, then the manufacturing process is simple, but the pipe cannot optimize strength distribution along its length to withstand varying operational stresses
Solution Approach 1:
The pipe is divided into multiple sections along its length, with each section having a different cross-sectional shape optimized for its specific functional requirements. This allows different parts of the pipe to have different strength characteristics - for example, higher strength in sections subjected to greater external loads and lower strength in sections with less demanding requirements, thereby optimizing overall strength distribution while reducing material usage.
Solution Approach 2:
The pipe manufacturing process is segmented into multiple stages, with each stage forming a specific section of the pipe with its designated cross-sectional geometry. This segmentation enables precise control over the geometry of each pipe section, allowing the pipe to accommodate varying operational stresses at different locations along its length.
2Adaptability or versatility
If the inner pipe is reforming to create variation in cross-section, then the flow profile can be optimized, but the manufacturing complexity increases
Solution Approach 1:
The inner pipe is pre-formed with the desired varying cross-sectional geometry before the composite material is applied. This preliminary action allows the flow profile optimization to be built into the pipe structure itself, rather than requiring complex post-manufacturing modifications. The inner pipe geometry is designed in advance to create the intended flow patterns, reducing the need for additional reforming operations.
3Strength
If fibre reinforced composite material is applied to the inner pipe, then the strength and stress resistance are enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
A fibre-reinforced composite material is applied to the inner pipe, combining the structural integrity of the inner pipe with the high strength-to-weight ratio of composite materials. This composite construction significantly enhances the pipe's ability to withstand operational stresses, including internal pressure and external loads, while maintaining a relatively lightweight structure.
Solution Approach 2:
The inner pipe and composite material are merged into a single integrated structure through bonding or curing processes. This merging creates a unified component that combines the advantages of both materials - the dimensional stability and flow characteristics of the inner pipe with the superior strength and stress resistance of the composite material layer.
Data Source
AI summary
A method for forming a composite fluid conduit includes providing an inner pipe having a variation in cross-section between at least two different longitudinal sections thereof and applying a fiber reinforced composite material to the inner pipe. In some disclosed examples the variation in cross section may be provided intermediate opposing ends of the inner pipe. In other disclosed examples the variation in cross section may be provided at an end region of the inner pipe.