2018 Volume 38 Issue 3 Pages 234-240
Civil engineering inspection methods which enable sound decisions on the maintenance and renewal of aging social infrastructure under the financial and engineering resources constrains are being developed. The main issues for inspections are the large surface to inspect and the need for scaffold or inspection vehicle for crack inspection of elevated structures such as viaducts, piers and dam structures. Also inspections by engineering staff are costly, require qualified manpower and there is risk of accidents. Hence, a new system for safety inspection of the surface of structures by using the UAV multicopter (UAV) is addressing the important aspect of concrete crack inspection by automatically detecting the cracks and estimating the crack width. The possibility of detection of cracks width of 0.2mm which is the limit value to take repairs and the estimation of the crack width with the same accuracy are being show in the present paper as a result of the demonstration experiments for the real massive concrete structures by using the developed system.
