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CORDTEX CARBON Engineering guide
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Information article · Product forms

Composite panels: design and input data

A composite panel can be a monolithic laminate or a sandwich structure with skins, core and local elements. The individual product category has not been confirmed. The article helps you prepare a project and compare it with a finished carbon sheet.

First define the design

The word “panel” can mean a flat monolithic sheet, a multi-layer sandwich structure, a cladding part, or an assembly element with embedded parts. These options differ in load transfer, edge treatment and connection method.

If only a flat piece of homogeneous CFRP laminate is required, the closest validated form is carbon sheet. If a sandwich structure is required, the design must describe the skin material, core, adhesive layers, reinforcement areas and edges.

The overall size and thickness do not determine the functionality of the panel. We need supports, distributed and local loads, permissible deflection, cutouts, fasteners and operating conditions.

Items to be agreed upon

ItemDesign questionWhat to check
SheathingBag material, orientation and thicknessDocuments and layer map
PlaceholderType, direction and local strengthCompatibility and status
GlueSurface preparation and cycleDocumented system
EdgeOpen, closed or reinforcedProcessing and sealing technology
MortgagesLocal Load TransferGeometry, position and control
CutoutsAttenuation and processingReinforcement and edge criterion

Sheet or Project Panel

A ready-made carbon sheet is convenient when the problem is solved by a flat monolithic part and subsequent CNC machining. A design panel is justified if a different design logic is required that cannot be achieved by simply increasing the sheet thickness.

Comparisons are made based on function, weight, rigidity, local joint strength, technology and control. Any sandwich panel cannot be considered automatically lighter or better: the result depends on the geometry and details of the components.

For small quantities, first check a sample of the edge and embed. These zones often define usability more than the middle of the panel.

Input data set

  • 3D model or full outline drawing;
  • diagram of supports, loads and permissible deflection;
  • sheathing and core structure or a request for its development;
  • cuts, holes, embeds and edge requirements;
  • surface, tolerances, quantity and markings;
  • control criteria and document requirements.

If the structure has not yet been calculated, this is indicated directly. Manufacturing assessment should not silently turn into panel design without an agreed scope of responsibility.

For finished sheet processing, DXF and edge requirements are prepared separately. An assembly model and process documentation may be required for a sandwich panel.

What cannot be promised under the general clause

Without calculations and tests, it is impossible to declare load-bearing capacity, impact resistance, fire resistance, protective class or suitability for a specific environment. Even identical external dimensions can hide fundamentally different designs.

Availability of materials also does not mean confirmed panel manufacturing service. The commercial opportunity is assessed after obtaining the input data and selecting the technological route.

Frequently asked questions

Are the panel and the carbon sheet the same thing?

Not necessary. The sheet is usually a monolithic form, and the panel may include skins, core, adhesive, and embeds.

Are there any panels in the current directory?

A separate confirmed category has not been recorded. You can consider carbon sheets or request a design estimate.

Is it possible to select a panel by thickness only?

No. We need structure, supports, loads, connections, cutouts and outcome criteria.

Why design an edge?

It affects the protection of the internal structure, connection, processing and durability of the assembly.

What files are needed?

Drawing or model, load diagram, nodes, embeds, requirements for surface, tolerances and control.

CORDTEX guarantees the production of the panel?

No. The feasibility and volume of production are confirmed by a separate response after the project has been assessed.

Need a choice for a specific task?

Submit dimensions, load, quantity and available files. CORDTEX will clarify the missing data and return with the relevant material or production route.