Composites, Fiberglass & Advanced Materials worked example

Layup Cell Capacity at 63% layup cell uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop layup cell uptime to 63%, then walk the calculation through step by step. Estimate good part capacity for a composite layup cell, cleanroom, or molding cell.

The inputs for this scenario

  • Parts completed per layup cycle: 3 parts / cycle (held at the documented default)
  • Planned layup cell cycles in the period: 30 cycles (held at the documented default)
  • Layup cell uptime (availability): 63 % (the input this scenario stresses; the baseline uses 88)
  • Layup first-pass yield: 94 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross layup cell capacity = parts completed per layup cycle × planned layup cell cycles.
  • good layup cell capacity works out to 53.3 parts at these inputs, and this is the headline figure for the scenario.
  • gross layup cell capacity works out to 90 parts at these inputs.
  • layup cell capacity lost to downtime works out to 33.3 parts at these inputs.
  • layup cell capacity lost to scrap or rework works out to 3.4 parts at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where layup cell uptime sits at 88% and the headline result is 74.45 parts, this scenario comes in 28.41% below the baseline at 53.3 parts.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to layup cell uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes uptime and first-pass yield are independent and stable; in reality a debulk or vacuum-bag failure can spike both downtime and scrap at once, so the model can overstate capacity during process upsets.

Results at a glance

  • good layup cell capacity: 53.3 parts (headline result)
  • gross layup cell capacity: 90 parts
  • layup cell capacity lost to downtime: 33.3 parts
  • layup cell capacity lost to scrap or rework: 3.4 parts

Run it with your numbers

  • To rerun this with your own numbers, open the live Layup Cell Capacity calculator, set layup cell uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.