How do you calculate composite inspection workload?

Divide required checks by checks per hour, then add the setup/review allowance. With 150 checks at 18/hr = 8.33 base hours, plus a 22% allowance, you get 10.17 hours.

What does the setup and review allowance cover?

Fixturing parts, calibrating equipment, logging results, and dispositioning findings — work that surrounds the actual checks. The 22% allowance adds about 1.83 hours to the 8.33 base here.

What is a realistic inspection pace for composites?

It varies widely: visual and tap testing can exceed 30 checks/hr, while detailed ultrasonic C-scan may run well under 10. The 18 checks/hr default reflects a mixed but mostly manual inspection mix.

Why not just use base hours?

Base hours (8.33) only count time at the part. Real shifts lose time to setup and paperwork; ignoring the allowance under-staffs the shift and pushes inspection past the planned finish.

How do I lower inspection workload?

Raise the completion rate with better fixturing or automated scanning, or cut the allowance by streamlining documentation. Lifting pace from 18 to 24 checks/hr would drop base hours from 8.33 to about 6.25.

Can I use this to staff a shift?

Yes. Divide the 10.17 estimated hours by inspectors and shift length: one inspector needs about 1.3 shifts, or two inspectors clear the lot in roughly 5 hours each.

Composites, Fiberglass & Advanced Materials calculator

Composite Inspection Workload Calculator

Composite Inspection Workload estimates the labor hours a QA team needs to clear a lot of composite parts, from the raw check count through a realistic allowance for setup, documentation and review. Quality managers and NDI planners use it to staff a shift and protect ship dates, because composite inspection — ultrasonic C-scan, tap test, dimensional, visual — is slow and easy to under-budget. It matters because the hands-on scan time is only part of the job; fixturing parts, logging results and dispositioning findings can add a fifth or more on top. Getting the number right keeps inspection from quietly becoming the bottleneck behind layup and cure.

What this calculator does

Estimate inspection labor hours for composite parts, coupons, panels, or assemblies.
planning composite quality inspection staffing
It divides required checks by the inspection completion pace to get base hours, then adds a setup-and-review allowance to give estimated total inspection hours.

Formula used

Base composite inspection workload = inspection points or parts required ÷ inspection completion pace
Estimated composite inspection workload = base time × (1 + inspection setup and review allowance)

Inputs explained

Inspection checks required for the lot:
Inspector check completion rate:
Setup, documentation and review allowance:

How to use the result

Use it to staff an inspection shift, schedule NDI capacity, or quote QA hours into a composite job before release.
It assumes a single steady inspection pace, so a lot mixing fast visual checks with slow C-scans needs to be split into separate runs or it will misestimate.

Current U.S. benchmarks

The producer price index for plastic resins and materials stands at 319.371 (BLS, May 2026), up 19.5% from a year earlier. Quotes priced off last quarter's material cost miss this move.
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate composite inspection workload? Divide required checks by checks per hour, then add the setup/review allowance. With 150 checks at 18/hr = 8.33 base hours, plus a 22% allowance, you get 10.17 hours.
What does the setup and review allowance cover? Fixturing parts, calibrating equipment, logging results, and dispositioning findings — work that surrounds the actual checks. The 22% allowance adds about 1.83 hours to the 8.33 base here.
What is a realistic inspection pace for composites? It varies widely: visual and tap testing can exceed 30 checks/hr, while detailed ultrasonic C-scan may run well under 10. The 18 checks/hr default reflects a mixed but mostly manual inspection mix.
Why not just use base hours? Base hours (8.33) only count time at the part. Real shifts lose time to setup and paperwork; ignoring the allowance under-staffs the shift and pushes inspection past the planned finish.
How do I lower inspection workload? Raise the completion rate with better fixturing or automated scanning, or cut the allowance by streamlining documentation. Lifting pace from 18 to 24 checks/hr would drop base hours from 8.33 to about 6.25.

Last reviewed 2026-05-12.