Mandrel Definition Update

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When to update the mandrel definition

The mandrel must periodically be updated, to account for thickness build up on the mandrel. The frequency at which the mandrel must be updated depends on the bandwidth used, the band thickness, and the winding angle. If multiple angles are used, choose the lowest winding angle.
The formula below shows the calculation required to give the number of layers where an additional circuit is required. This is the point at which a mandrel update is needed.

The calculation shown by the equation above can be calculated in a spreadsheet, this can be done on the embedded spreadsheet below if this document is viewed online, alternatively this spreadsheet can be downloaded.