Insulating Fluted Core Panels Using Membrane Carrier
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Solution Overview
Problem
Conventional methods face challenges in effectively insulating fluted core panels, such as those used in pressurized components like pressure vessels, due to difficulties in positioning insulation within the panels during manufacturing.
Innovation Solution
A method involving the use of spacers, membranes, and inflatable bladders to position and cure insulation within the fluted core panels, allowing for efficient insulation placement and bonding, including the use of semi-permeable membranes and adhesion enhancers to ensure uniform insulation thickness and retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional manufacturing methods are used to position insulation in fluted core panels, then the manufacturing process is simple, but the insulation cannot be effectively positioned within the panels
Solution Approach 1:
A membrane is introduced as an intermediary carrier that holds the insulation material and positions it within the fluted core panel. The membrane acts as a mediator between the insulation material and the panel structure, enabling precise positioning that would be difficult to achieve with conventional direct placement methods.
Solution Approach 2:
The insulation material is pre-positioned on the membrane before insertion into the fluted core panel. This preliminary action allows the insulation to be accurately positioned and secured on the membrane in advance, ensuring proper placement within the complex fluted structure without requiring complex in-situ positioning mechanisms.
2Temperature
If insulation is positioned within fluted core panels using conventional methods, then the process is straightforward, but thermal performance is insufficient
Solution Approach 1:
The membrane with insulation material is nested within the fluted core structure, with the membrane conforming to the fluted geometry. This nesting approach allows the insulation to be positioned within the complex three-dimensional fluted configuration, achieving effective thermal insulation coverage that would be difficult to obtain with conventional flat insulation placement methods.
Solution Approach 2:
A flexible membrane is used to carry and position the insulation material within the fluted core panel. The membrane's flexibility allows it to conform to the complex fluted geometry while maintaining insulation contact, achieving effective thermal performance without requiring rigid or complex positioning structures.
3Manufacturing precision
If uniform insulation thickness is achieved in fluted core panels, then thermal performance improves, but positioning precision requirements increase
Solution Approach 1:
The membrane serves multiple functions: it carries the insulation material, positions it within the fluted core, maintains uniform thickness through its structural properties, and facilitates removal after curing. This multi-functionality achieves uniform insulation thickness without requiring separate complex positioning and thickness-control systems.
Solution Approach 2:
The membrane structure itself provides the positioning and thickness-control functionality through its inherent properties. By designing the membrane with appropriate stiffness, dimensions, and attachment features, the system achieves uniform insulation thickness automatically during the insertion and curing process, without requiring external positioning devices or complex control mechanisms.
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 enables effective insulation of fluted core panels, enhancing thermal performance and structural integrity while allowing for weight savings and efficient purging processes, suitable for applications like cryogenic liquid storage tanks.
Implementation Method 1
curing the membrane
Implementation Method 2
adhesion enhancers to ensure uniform insulation thickness and retention
Data Source
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AI summary
A method of partially insulating an interior space of a pre-formed fluted core panel (100) is disclosed herein. The fluted core panel includes a first facesheet (110), a second facesheet (112) spaced apart from the first facesheet, and webs (114) between the first facesheet and second facesheet. The interior space (124) is defined between the first facesheet, the second facesheet, and adjacent webs. The method includes positioning a spacer (134) in a first portion of the interior space, positioning a membrane (136) between the spacer and a second portion of the interior space, and positioning insulation (120) in the second portion of the interior space. Additionally, the method includes pressing the membrane against the spacer, curing the membrane, and removing the spacer from the first portion of the interior space.