The development and application of an original 3D laser scanning: a precise and nondestructive structural measurements system

Abstract

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.

Volume Estimation of an Indoor Space with LiDAR Scanner

“…In environmental modelling, Li et. al [19] uses a high-precision lifting platform and a small laser range sensor. Chou [12], and Surmann [23] developed a 3D mapping system consisting of a mobile platform and a rotating platform consisting of a laser rangefinder.…”

Three-dimensional scanning system based on a low-cost infrared sensor

“…In the context of civil structure detection, the authors from [7], with the intent to overcome the inconveniences of 3D laser scanning (cost, heavy, among others), designed a 3D scanning system that consisted of an elevating platform actuated by a stepper motor and a small 2D laser ranging sensor. The authors stated, based on the obtained results, that the system achieved a higher measurement accuracy with lower cost and stronger environmental adaptability.…”

Repair Method of Data Loss in Weld Surface Defect Detection Based on Light Intensity and 3D Geometry

“…In the application of AOI based on point cloud, an extraction algorithm was proposed in [6] to efficiently and effectively detect rivets from the raw scanned point clouds which can assist in the rapid measurement of riveting quality. The manufacture process of the 3D scanning system with a high precision, miniaturization and lightweight was proposed in [7] to capture the information of microdamage and depth of the modern civil architectural structures. At present, real-time detection is mainly realized by image AOI, while point cloud AOI also has quite high accuracy and real-time performance.…”