CORE AND STRUCTURAL COORDINATION / FIELD NOTE 06
Why Honeycomb Core Has a Ribbon Direction
Expanded honeycomb can behave differently along and across its ribbon direction. The consequences depend on how the selected core is oriented in the finished panel and how the panel spans between supports.
What to check on your project
Show the core orientation relative to the panel axes on the drawing when it matters to the design. Keep the drawing orientation, test direction and calculation direction consistent, especially when a rectangular panel is rotated to improve material yield.