Logs can be inspected using X-ray linescan or CT methods.
The use of multiple X-ray sources and detectors enables many parameters of a log to be measured, including knot volume, ring width, rot and density. This permits much more efficient use of material.
Thicker logs require higher X-ray energies.
Different scintillators can be fitted to optimize detector perfomance for X-ray energies between 100keV and 225keV.
Sawn timber is inspected by a single X-ray source and by a smaller detector, typically 0.5m long and provides measurement of timber thickness and quality.
Length of active area mm
Detector pitch mm
single / dual
Oil Well Logging