# Micro-CT inspection of wood-polymer composites

Canonical: https://woodplasticcomposite.net/guides/micro-ct-inspection-of-wood-polymer-composites/
Language: en
Updated: 2026-10-15
Version: 1
Review: AI-assisted English editorial draft. Human technical review has not been recorded.

## Summary

X-ray microtomography can help visualise internal structure without relying only on a cut surface. Its usefulness depends on resolution, contrast and the size of the feature being investigated.

## Technical context

Not every boundary between constituents will be equally visible. Reconstruction and segmentation choices can change calculated porosity or geometry. A striking three-dimensional image is not automatically a quantitative measurement of the entire component.

https://woodplasticcomposite.net/guides/micro-ct-inspection-of-wood-polymer-composites/#technical-context

## What to measure and document

Document scan conditions and the analysis method. Check selected features against another suitable observation where possible. Report the inspected volume and resolution so readers understand what the scan could and could not detect.

https://woodplasticcomposite.net/guides/micro-ct-inspection-of-wood-polymer-composites/#verification-plan

## Implications for development and specification

Use the technique to answer a defined development or failure question. Small scanned samples may not represent a long production profile. Product release decisions should combine appropriate sampling with evidence relevant to the intended service function.

https://woodplasticcomposite.net/guides/micro-ct-inspection-of-wood-polymer-composites/#practical-decision

## Related reading and evidence limits

A research investigation using imaging and microscopy to examine exposed WPC samples. Use the linked work as related reading. The practical checks above are editorial recommendations, not reported test results or a substitute for product qualification.

https://woodplasticcomposite.net/guides/micro-ct-inspection-of-wood-polymer-composites/#reading-scope

## Key points

Not every boundary between constituents will be equally visible.
Document scan conditions and the analysis method.
Use the technique to answer a defined development or failure question.

## Comparison

Review step | Evidence to retain
Material and geometry | Exact specimen or product identity
Verification | Method, conditions and individual observations
Decision | Approved scope and documented limitations

## What evidence is needed for micro-CT inspection of wood-polymer composites?

Document scan conditions and the analysis method. Check selected features against another suitable observation where possible. Report the inspected volume and resolution so readers understand what the scan could and could not detect.

## Sources

1. Instrumental methods for studying biological decay in WPC — https://research.fs.usda.gov/treesearch/46176