Issue 51

K. Li et alii, Frattura ed Integrità Strutturale, 51 (2020) 386-397; DOI: 10.3221/IGF-ESIS.51.28 386 The development and application of an original 3D laser scanning: a precise and nondestructive structural measurements system Kexin Li, Jun Wang College of Civil Engineering, Northeast Forestry University, Harbin 150000, China like@nefu.edu.cn , http://orcid.org/0000-0003-3854-1710 jun.w.619@163.com Dawei Qi School of Science, Northeast Forestry University, Harbin 150000, China qidw9806@126.com A BSTRACT . Recently, a number of Non-Destructive Testings (NDTs) equipment which can partially replace human-conducted on-site inspections has been implemented for detecting modern civil architectural structures. However, the situation of implementing 3D laser scanning measurement technology worldwide is not optimistic: several inconvenient flaws are troubling users (e.g., heavy, costly, hard to move, hard to inspect and etc.). Therefore, a new equipment to address the problems is urgently demanded. A 3D laser scanning system is designed composed of high precision elevating platform and small 2D laser ranging sensor. Manufacture Process of the 3D laser scanning system is described in detail. A comparative analysis with other non-contact measurement experiments based on the bending fatigue load test, the scanning designed efficiency and feasibility has been proved. The information of micro-damage and depth of the structure can be quickly captured by the designed 3D laser scanning system. Its detecting performance is better than the traditional methods. To overcome the challenges of the 3D laser scanning on-site measurement technology, this paper proposes the manufacture process of the 3D scanning system with a high precision, miniaturization and lightweight. K EYWORDS : Structure detection; 3D laser scanning; Nondestructive testing; Digital image process; Measurement on site. Citation: Li, K., Wang, J., Qi, D., The development and application of an original 3D laser scanning: a precise and nondestructive structural measurements system, Frattura ed Integrità Strutturale, 51 (2020) 386-397. Received: 15.10.2019 Accepted: 01.12.2019 Published: 01.01.2020 Copyright: © 2020 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION uilding structure testing can provide a reliable basis for the quality assessment of engineering structures, the identification of existing structural properties and the verification of structural calculation theory [1]. The building structure is inspected on site through various measurement techniques. The structural related parameters are obtained. The effective feature information reflecting the current state of the structure is captured. And the relationship B