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Journal ArticleDOI

Exploratory Study of Potential Applications of Unmanned Aerial Systems for Construction Management Tasks

01 May 2016-Journal of Management in Engineering (American Society of Civil Engineers)-Vol. 32, Iss: 3, pp 05016001-05016001

AbstractDespite studies exploring potential applications of unmanned aerial systems (UASs), the particular use and value of visual assets (photographs or video) collected with UASs for construction management tasks is not well understood. This paper presents an exploratory case study to identify potential applications of visual assets obtained from UASs for construction management tasks. The case study involved the development of a visual assets database from UAS-based images and videos collected during UAS flights at jobsites in the United States and Brazil as well as semi-structured interviews with construction project personnel. The results revealed potential applications of UASs mainly for project progress monitoring, job site logistics, evaluating safety conditions, and quality inspections among other secondary management tasks. In addition, an analysis of costs related to the use of UASs was performed. The main contribution of this case study is a better understanding of the use of UASs for construction management tasks and their regulatory and cost implications.

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Citations
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Journal ArticleDOI
Abstract: In this study, a framework for performance-based laboratory testing of cementitious mixtures for construction-scale 3D printing is developed, where workability of a fresh “printing mixture” is studied in terms of print quality, shape stability, and printability window. Print quality is described using measures of surface quality and dimensions of printed layers. Details of two proposed test methods for evaluation of shape stability, namely, “layer settlement” and “cylinder stability” are also provided. Experimental study of four different mixtures revealed that inclusion of silica fume and Nano-clay significantly enhance shape stability. The results of five conventional test methods, as well as four proposed tests are used to discuss the performance of mixtures.

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Journal ArticleDOI
Abstract: Additive manufacturing (AM) of construction materials has been one of the emerging advanced technologies that aim to minimise the supply chain in the construction industry through autonomous production of building components directly from digital models without human intervention and complicated formworks. However, technical challenges needs to be addressed for the industrial implementation of AM, e.g. materials formulation standardization, and interfacial bonding quality between the deposited layers amongst others. AM as one of the most highlighted key enabling technologies has the potential to create disruptive solutions, the key for its successful implementation is multidisciplinary effort in synergy involving materials science, architecture/design, computation, and robotics. There are crucial links between the material design formulations and the printing system for the manufacturing of the complex 3D geometries. Understanding and optimising the mix design for fresh rheology of materials and sufficient adhesion/cohesion of interface can allow the incorporation of complexity in the geometry.

103 citations


Cites background from "Exploratory Study of Potential Appl..."

  • ...the utilisation of drone technology on construction sites has been investigated for applications such as safety inspection [6] and 3D modelling of the site [7]....

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Journal ArticleDOI
Abstract: The use of technologies on jobsites is one of the recent challenges for construction management. To exemplify this, studies report the use of Unmanned Aerial Vehicles/Systems (UAV/UAS) for transportation and jobsite monitoring, and these potential features have caught the attention of the construction industry. However, studies are still required to orient the development of operational procedures for using this technology effectively, mainly for on-site safety monitoring. This study aims to assess the applicability of UAV for safety inspection on construction sites, focusing on the identification of the requirement that can be inspected and the non-compliances with the safety requirements established. This study was based on two case studies, conducted by a protocol developed for data collection, processing and analysis of the visual assets (photos and video recording) gathered from the UAS flights on jobsites. The results show that the visual assets collected by UAV can improve the safety inspection on jobsites by means of a better visualization of working conditions. This fact was pointed out by the analysis of the visual assets which provided detailed information about the compliance of safety items according to the safety regulations. The main contribution of this research is the development of a set of procedures and guidelines for collecting, processing and analyzing safety requirements from UAS visual assets on jobsite in order to identify the potential to incorporate this technology into the project’s safety management routine.

88 citations


Journal ArticleDOI
Yan Li1, Chunlu Liu1
Abstract: Multirotor drones are considered a new and innovative technology. Therefore, many fields are showing increasing interest in utilizing multirotor drones, such as mapping in mining and surveillance i...

69 citations


Journal ArticleDOI
TL;DR: This paper is intended to provide the state-of-the-art and of the practice on visual inspection, monitoring, and analysis of infrastructure using unmanned aerial vehicles (UAVs) using UAVs.
Abstract: This paper is intended to provide the state-of-the-art and of-the-practice on visual inspection, monitoring, and analysis of infrastructure using unmanned aerial vehicles (UAVs). Several re...

55 citations


Cites background from "Exploratory Study of Potential Appl..."

  • ...…damage identification (Chan et al. 2015; Chen et al. 2011; Ellenberg et al. 2014; Hallermann and Morgenthal 2014; Henriques and Roque 2015; Irizarry and Bastos 2016; Khaloo et al. 2018; Lovelace and Zink 2015; Metni and Hamel 2007; Otero 2015; Rathinam et al. 2008; Roca et al. 2013; Wells…...

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  • ...Researchers have studied the possibility of using drones to identify damage on the structure (Ellenberg et al. 2014; Eschmann et al. 2012; Irizarry et al. 2012; Irizarry and Bastos 2016; Jizhou et al. 2004; Morgenthal and Hallermann 2014; Roca et al. 2013)....

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References
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Journal ArticleDOI
TL;DR: A novel control law based on computer vision for quasi-stationary flights above a planar target is presented, which uses the homography matrix computed from the information obtained from the vision system.
Abstract: This paper describes the dynamics of an unmanned aerial vehicle (UAV) for monitoring of structures and maintenance of bridges. It presents a novel control law based on computer vision for quasi-stationary flights above a planar target. The first part of the UAV's mission is the navigation from an initial position to a final position in an unknown 3D environment. The new control law uses the homography matrix computed from the information obtained from the vision system. The control scheme will be derived with backstepping techniques. In order to keep the camera's field of view, the control law uses saturation functions for bounding the UAV orientation and limiting it to very small values.

375 citations


"Exploratory Study of Potential Appl..." refers background in this paper

  • ...2004), avalanche control (McCormack and Trepanier 2008), aerial assessment of road surface condition (Zhang and Elaksher 2012), bridge inspection (Metni and Hamel 2007; Morgenthal and Hallermann 2014), and safety inspection on jobsites (Irizarry et al....

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Book
01 Sep 2004
TL;DR: The roots of all Aviation, Cold War, Hot Missions, and Unmanned UAVs Today: A Snapshot future history are explored.
Abstract: Introduction Birth of a Concept The Concept Takes Flight But For One Dissenting Vote Technical Challenge No. 2: Remote Control United Kingdom The Roots of All Aviation Reginald Denny Delbert Fahrney Cold War, Hot Missions Vietnam: The Coming of Age Israel Endeavoring to Endure Unfueled and Unmanned UAVs Today: A SnapshotFuture History Appendix A: Significant Dates in Unmanned Aviation Appendix B: Notable Personalities in Unmanned Aviation Appendix C: Notable Unmanned Aircraft Bibliography

207 citations


Proceedings ArticleDOI
06 Mar 2004
Abstract: This paper describes the vision-based control of a small autonomous aircraft following a road. The computer vision system detects natural features of the scene and tracks the roadway in order to determine relative yaw and lateral displacement between the aircraft and the road. Using only the vision measurements and onboard inertial sensors, a control strategy stabilizes the aircraft and follows the road. The road detection and aircraft control strategies have been verified by hardware in the loop (HIL) simulations over long stretches (several kilometers) of straight roads and in conditions of up to 5 m/s of prevailing wind. Hardware experiments have also been conducted using a modified radio-controlled aircraft. Successful road following was demonstrated over an airfield runway under variable lighting and wind conditions. The development of vision-based control strategies for unmanned aerial vehicles (UAVs), such as the ones presented here, enables complex autonomous missions in environments where typical navigation sensor like GPS are unavailable.

169 citations


Journal Article
TL;DR: In this study, a small-scale aerial drone was used as a tool for exploring potential benefits to safety managers within the construction jobsite and recommendations for the required features of an Ideal Safety Inspection Drone were led.
Abstract: SUMMARY: The construction industry lags behind many others in the rate of adoption of cutting edge technologies In the area of safety management this is more so Many advances in information technology could provide great benefits to this important aspect of construction operations Innovative use of these tools could result in safer jobsites This paper discusses initial application of drone technology in the construction industry In this study, a small-scale aerial drone was used as a tool for exploring potential benefits to safety managers within the construction jobsite This drone is an aerial quadricopter that can be piloted remotely using a smart phone, tablet device or a computer Since the drone is equipped with video cameras, it can provide safety managers with fast access to images as well as real time videos from a range of locations around the jobsite An expert analysis (heuristic evaluation) as well as a user participation analysis were performed on said quadricopter to determine the features of an ideal safety inspection drone The heuristic evaluation uncovered some of the user interface problems of the drone interface considering the context of the safety inspection The user participation evaluation was performed following a simulated task of counting the number of hardhats viewed through the display of a mobile device in the controlled environment of the lab Considering the task and the controlled variables, this experimental approach revealed that using the drone together with a large-size interface (eg iPad) would be as accurate as having the safety manager with plain view of the jobsite The results of these two evaluations together with previous experience of the authors in the area of safety inspection and drone technology led to recommendations for the required features of an Ideal Safety Inspection Drone Autonomous navigation, vocal interaction, high-resolution cameras, and collaborative user-interface environment are some examples of those features This innovative application of the aerial drone has the potential to improve construction practices and in this case facilitate jobsite safety inspections

167 citations


"Exploratory Study of Potential Appl..." refers background in this paper

  • ...2004), avalanche control (McCormack and Trepanier 2008), aerial assessment of road surface condition (Zhang and Elaksher 2012), bridge inspection (Metni and Hamel 2007; Morgenthal and Hallermann 2014), and safety inspection on jobsites (Irizarry et al. 2012)....

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Journal ArticleDOI
Abstract: This paper discusses the application of Unmanned Aerial Vehicles (UAV) for visual inspection and damage detection on civil structures. The quality of photos and videos taken by using such airborne vehicles is strongly influenced by numerous parameters such as lighting conditions, distance to the object and vehicle motion induced by environmental effects. Whilst such devices feature highly sophisticated sensors and control algorithms, specifically the effects of fluctuating wind speeds and directions affect the vehicle motion. The nature of vehicle movements during photo and video acquisition in turn affect the quality of the data and hence the degree to which damages can be identified. This paper discusses the properties of such flight systems, the factors influencing their movements and the resulting photo quality. Based on the processed data logged by the high precision sensors on the UAV the influences are studied and a method is shown by which the damage assessment quality may be quantified.

165 citations