Bin Zhang, Letchuman Spiragarash
A sub-surface defect detection technique is investigated for in situ inspection of the laser powder bed fusion process using a flash thermography technique. Several thermal image analysis methods are investigated, and a technique based on fitting the logarithm-scale temperature curve to a linear function is found effective in detecting near-surface defects in a metal defect artifact. The measurement on an additively manufactured defect sample also shows this technique holds some promises for sub-surface defect detection for the laser powder bed fusion process.
@article{769c84be-f0bb-4cc8-8735-dbe523397fd7,
title={A FLASH THERMOGRAPHY TECHNIQUE FOR IN SITU INSPECTION FOR THE LASER POWDER BED FUSION PROCESS},
author={Bin Zhang and Letchuman Spiragarash},
year={2026},
language={en}
}TY - JOUR TI - A FLASH THERMOGRAPHY TECHNIQUE FOR IN SITU INSPECTION FOR THE LASER POWDER BED FUSION PROCESS AU - Bin Zhang AU - Letchuman Spiragarash PY - 2026 LA - en ER -
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