Improving The Quality Of Bridge Inspections Using Unmanned Aircraft Systems Uas
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| Author | : Jennifer Wells |
| Publisher | : |
| Total Pages | : 345 |
| Release | : 2018 |
| Genre | : Bridges |
| ISBN | : |
Bridges are a key part of our transportation system and maintaining this infrastructure is important to ensure the safety of the traveling public and to effectively manage these valuable assets. Safety inspections not only ensure the structural integrity of a bridge but provide valuable data to decision makers. The Minnesota Department of Transportation and Collins Engineers, Inc. has completed this third phase of research focused on utilizing drones as a tool for improving the quality of bridge inspections. The previous phases focused on the rules and regulations, drone hardware and the ability of drones to collect quality inspection data. This phase of research has identified new drone technology and methods to address limitations identified in Phase II. More importantly, this research phase has focused on the value of data collected during the inspection and finding ways to process the data into actionable inspection deliverables that greatly improve the quality of the inspections. These inspection deliverables better communicate the inspection results to bridge owners and engineers. Our world is being transformed by technology including drones that can collect, process, store, and analyze large amounts of data and this research is applying the same transformative concepts and technology to improve bridge inspection outcomes.
| Author | : Matthew N. Gillins |
| Publisher | : |
| Total Pages | : 50 |
| Release | : 2016 |
| Genre | : Bridges |
| ISBN | : |
Bridge inspections are vital for monitoring the health and serviceability of transportation infrastructure throughout the world. However, inspections can be logistically-challenging, expensive, and dangerous. For example, inspections may require climbing, as well as the use of scaffolding, ladders, rescue boats, bucket trucks, and/or under-bridge inspection vehicles. Small, multirotor unmanned aircraft systems (UAS) offer a potential means of overcoming or alleviating some of these challenges. Among the primary benefits of UAS for inspections are the ability to maneuver adeptly in 3D space, change view angles, and acquire high-resolution imagery, enabling the inspector to view (in real time and/or post-flight using post-processing enhancements, as needed) bridge elements in difficult-to-access locations, all while keeping both feet firmly on the ground. As transportation departments, inspection firms, and service providers increasingly recognize these potential benefits, interest in UAS for bridge inspections is growing rapidly. While a number of UAS bridge inspection projects have been documented in published reports and case studies, the rate of change of both UAS technology and associated regulations necessitates additional research and development, especially with regards to operational aspects of UAS bridge inspection. The purpose of this study was to develop, test and document an end-to-end operational workflow for UAS bridge inspections, with a particular focus on regulatory and safety aspects. Since it is recognized that UAS are simply one tool for this particular application, another key focus on this study was on investigating which aspects of bridge inspection can and cannot be aided by UAS. As part of the study, three bridges in Oregon, representing different bridge types, conditions and locations, were inspected using small, multirotor UAS.
| Author | : Daniel T. Gillins |
| Publisher | : |
| Total Pages | : 41 |
| Release | : 2016 |
| Genre | : Bridges |
| ISBN | : |
This report presents the results of a study on the use of unmanned aircraft systems (UAS) in bridge inspections. A detailed literature review was conducted to assess and document the current state of knowledge on the use of UAS in structural inspections and related engineering applications. A particular focus was on related work done by various state DOTs. Given the technical specifications and findings documented in the literature review, an item-by -item review of bridge inspection manuals was then performed to assess which elements of a bridge inspection could potentially benefit from use of UAS. Additionally, various categories of UAS and payloads were evaluated for bridge inspection. A small multicopter UAS was acquired and used to collect ultra-high-definition video and still imagery of a large bridge in Independence, Oregon. The imagery was reviewed by project team members and ODOT bridge inspectors. The results of the Independence Bridge inspection are presented, along with recommendations for further work. The study identified several challenges on the use of UAS for bridge inspection, including the need to capture very high resolution imagery, and problems due to strong wind and poor lighting conditions.
| Author | : |
| Publisher | : |
| Total Pages | : 214 |
| Release | : 2015 |
| Genre | : Bridges |
| ISBN | : |
The increasing costs of bridge inspections are a concern for the Minnesota Department of Transportation (MnDOT). The use of Unmanned Aerial Vehicles (UAV) may help alleviate these costs and improve the quality of bridge inspections. The overall goal of the UAV Bridge Inspection Demonstration Project was to study the effectiveness of utilizing UAV technology as it could apply to bridge safety inspections. The project team investigated the technology on four bridges located throughout Minnesota. The project team evaluated the UAVs effectiveness as it could apply to bridge inspections based on UAV field results. Various UAV capabilities were utilized to evaluate current technologies as they relate to use in bridge inspections. This study details the advantages and challenges of potentially using UAVs to aid in bridge inspection, an analysis of current and future UAV technologies as they relate to bridge inspection, and an analysis describing how current and future technologies adhere to the National Bridge Inspection Standards.
| Author | : Jarlath P.M. O'Neil-Dunne |
| Publisher | : |
| Total Pages | : 53 |
| Release | : 2019 |
| Genre | : |
| ISBN | : |
| Author | : Hiroshi Yokota |
| Publisher | : CRC Press |
| Total Pages | : 8732 |
| Release | : 2021-04-20 |
| Genre | : Technology & Engineering |
| ISBN | : 100017381X |
Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations contains lectures and papers presented at the Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020), held in Sapporo, Hokkaido, Japan, April 11–15, 2021. This volume consists of a book of extended abstracts and a USB card containing the full papers of 571 contributions presented at IABMAS 2020, including the T.Y. Lin Lecture, 9 Keynote Lectures, and 561 technical papers from 40 countries. The contributions presented at IABMAS 2020 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of maintenance, safety, management, life-cycle sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle sustainability, standardization, analytical models, bridge management systems, service life prediction, maintenance and management strategies, structural health monitoring, non-destructive testing and field testing, safety, resilience, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, and application of information and computer technology and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on maintenance, safety, management, life-cycle sustainability and technological innovations of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including engineers, researchers, academics and students from all areas of bridge engineering.
| Author | : Jennifer Wells |
| Publisher | : |
| Total Pages | : 174 |
| Release | : 2017 |
| Genre | : Bridges |
| ISBN | : |
An Unmanned Aircraft System (UAS) is defined by the Federal Aviation Administration (FAA) as an aircraft operated without the possibility of direct human intervention from within the aircraft. Unmanned aircraft are familiarly referred to as drones, and the names can be used interchangeably. The UAS is controlled either autonomously or with the use of a remote control by a pilot from the ground. These UASs offer a wide range of imaging technologies which include photographic stills, video, and infrared sensors that can be viewed live and later processed to assist with inspections. Bridge inspections often pose logistical challenges to efficiently and effectively inspect a wide variety of structure types; therefore, inspection by UAS is a solution that can be safe and cost-effective. The Minnesota Department of Transportation (MnDOT) and Collins Engineers have been researching the use of UASs as a tool for bridge inspections in a multi-phase project. This phase of the study research identified potential applications of UAS technology to aid in bridge inspections and is a continuation of a previous study by the MnDOT.
| Author | : Ignacio Hernandez |
| Publisher | : |
| Total Pages | : 96 |
| Release | : 2016 |
| Genre | : Bridges |
| ISBN | : |
Applications for small unmanned aerial vehicles have exploded over the past decade. Small size, maneuverability, low cost, and versatility enable utilization for applications not readily accessible by traditional manned aircraft, such as bridge inspections. However, the challenges associated with conducting inspections in a safe, cost efficient manner currently exceed the benefits of using an unmanned aircraft for inspection. The development of a multirotor-based inspection aircraft capable of maintaining flight for over eight hours is presented. Flight results from a bridge inspection conducted in collaboration with the Missouri Department of Transportation (MoDOT) and Shafer, Kline, & Warren (SKW) bridge inspection crews are also discussed. Feedback and recommendations for inspection platform improvement from MoDOT and SKW inspectors was collected. Inspectors and flight crew identified challenges with camera exposure, dual pilotinspector remote control, and aircraft stability. As a result, a new inspection platform was developed allowing for wireless dual remote control and manual control of camera exposure. Finally, and most importantly, a new metric for quantifying UAS handling and pilot workload in GPS denied environments is introduced through rigorous flight testing and the use of a modified Cooper-Harper rating scale. Inspection of the bridge substructure prevented GPS lock and increased pilot workload. To mimic the effects of flying around a bridge flight testing is conducted at the UMKC parking garage where GPS lock is denied. The aircraft and inspection solutions discussed herein have demonstrated success for acquiring meaningful inspection data while conducting safe flight operations.
| Author | : Yelda Turkan |
| Publisher | : |
| Total Pages | : 49 |
| Release | : 2019 |
| Genre | : |
| ISBN | : |
| Author | : Jennifer Wells |
| Publisher | : |
| Total Pages | : |
| Release | : 2021 |
| Genre | : Artificial intelligence |
| ISBN | : |
Drones for bridge inspection research has been completed by MnDOT in multiple phases since 2015. As of summer, 2017, Phase III of this research began using the SenseFly Albris and the Flyability Elios, a collision-tolerant drone more suited to confined spaces such as box girders, culverts, or areas that are difficult to access. Due to the success of this research, MnDOT Metro District purchased the Elios drone to supplement bridge inspection access where space is confined and optimal lane closures are prohibited, which has been an on-going issue in the District due to traffic volumes. This project implements drone inspection for the metro bridge inventory and other similar representative structures by creating an inspection plan that identifies bridges best suited for drone use, what parameters govern drone use in bridge inspection, and how unmanned aircraft systems (UAS) can be integrated into standard inspection operations. The project explores relevant technology, including reality modeling software, drone hardware, artificial intelligence, and autonomous flights. This project also delivers the UAS Safety and Operation Manual specific to the Metro District.
