Honeycomb Panels Construction: Honeycomb sandwich panels have high torsional and bending rigidity because the structure acts in the same way as an I-beam. The facings of honeycomb panels are similar to flanges of an I-beam, and the core corresponds to the web, but unlike the I-beam, the core gives continuous support to the facing. The chart below demonstrates how dramatically the core strengthens the face material without contributing appreciably to the weight.   Relative Stiffness 100 700 3700 Relative Strength 100 350 925 Relative Weight 100 103 106 While our standard honeycomb panels, which have exposed and visible core between the facings, are suitable for many customers, others may need closures, blocks, cross members, etc. Paneltec can help you design your honeycomb panels with simple cost-effective additions to meet specific requirements. return to top Edge Close-outs: Edge close-outs are used in honeycomb panels construction for a variety of reasons including: To act as a structural tie to adjoining or supporting structural members To allow panels to be joined either at angles or flat edgewise To incorporate a hinge or cam lock To seal the panel against moisture or chemical vapors For cosmetic appeal Edge close outs are co-fab or post-fab depending upon when in the assembly process they are incorporated.   Co-fabricated are bonded into the panel. Post-fabricated are attached to the sandwich panel after it is laid-up and trimmed to size.   Treatments you may select: Post-Fab Co-Fab Z-bar flange. Panel is smooth on one side. Low cost with two standard angles. Pop-rivet and bond. Special extrusions or castings bonded to panel. Could include doublers. Simplest close out. Legs of channel can be nipped and bent or mitered at corners. Overlaying standard angles. For thick panels only. Particle board, foam or wood bonded into panel. Channel bonded into panel. Legs out or in. Tube bonded into panel. Stronger, more costly. Special extrusions can be made to accommodate top and bottom skins. Break metal top and bottom. Can also be made with only one side folded. return to top Internal Blocking When it is necessary to attach secondary parts to a sandwich panel and these parts are away from the edge, internal blocking or cross members can be provided, using particle board, high density foam, metal bar or tube, etc. Metal blocks can be drilled and tapped. Sometimes inserts are used instead. The internal block is used when strength requirements are greater. Often inserts are not flush with the panel face--internal blocking is. Tube Solid Metal Bar Particle Board or Wood Unreinforced honeycomb panels can be drilled and bolted through if body washers, sheet metal or plate doublers are used to spread the compression load. Otherwise the torquing of nut and bolt will dimple or indent the faces. Paneltec offers these options. In addition we can do post-fabrication machining and some assembly. Conclusion We bring you the benefits of our expertise in honeycomb panels fabrication. While we prefer simple design solutions and simple, reliable methods of fabrication, we also employ sophisticated engineering software, CNC machining, laser and water-jet cutting where appropriate. We look for a balance to save you and us headaches and expense. return to top

Honeycomb Panels Design Guidelines

Paneltec 1218 Commerce Court Lafayette, Colorado 80026-9536 303.664.1420 800.466.3914 fax: 303.664.1430 email: info@Panelteccorp.com

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