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Dual-band infrared imaging for concrete bridge deck inspection
| 题名： | Dual-band infrared imaging for concrete bridge deck inspection |
| 作者： | Durbin, P.; Del Grande, N. |
| 关键词： | Infrared Thermography; Bridges; Roads; Algorithms; Concretes; Defects; Image Processing; Nondestructive Testing |
| 摘要： | Dual-band infrared (DBIR) imaging methods and unique image-correction algorithms used successfully for underground and obscured object imaging and detection (of buried mines, archaeological structures, geothermal aquifers and airframe defects) are adapted for inspection of concrete highways and bridge decks to provide early warnings of subsurface defects. To this end, we prepared small concrete test slabs with defects (embedded plastic layers). We used selective DBIR (3--5 micrometer and 8--12 micrometer image ratios to depict the defect sites and remove the effects of surface clutter. We distinguish true temperature-difference signals (at surrogate delamination sites) from emissivity noise (at sites with oil stains, sand, gravel, metal parts and roughness differences) towards improved concrete bridge deck inspections. |
| 总页数： | 7p |
| 报告类型： | 科技报告 |
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