Unmanned aerial vehicle (UAV) application to the structural health assessment of large civil engineering structures

Castiglioni, Carlo Andrea; Rabuffetti, A. S.; Chiarelli, Gian Paolo; Brambilla, Giovanni; Georgi, Julia

doi:10.1117/12.2277921

Cited by 9 publications

(4 citation statements)

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“…головними питаннями, що розглядаються при реконструкції тец, є скорочення та очищення технологічних шкідливих викидів у повітря (нові технології очищення палива для тес, створення спеціальних очисних фільтрів), оцінка екологічних впливів на довкілля, попередження забруднення природних вод -Інженерно-геологічні та геоекологічні проблеми теплоенергетики на міських територіях них об'єктів стічними технологічними водами (Звіт…, 2018;Wenjing et al, 2020). для встановлення строків подальшої експлуатації теплоенергетичних комплексів застосовуються методи візуальних обстежень пошкоджень градирень та димових труб із використанням без пілотних літальних апаратів, моделювання напружень та деформацій в їх конструкціях методами скінченних елементів (Castiglioni et al, 2017). розробляються питання щодо рекультивації та використання територій золовідвалів для розміщення на них легких та важких конструкцій, а також використання золи та шлаку як будівельних матеріалів (Parhi et al, 2019(Parhi et al, , 2020Marjanović et al, 2020).…”

Section: аналіз сучасних дослідженьunclassified

Engineering-Geological and Geoecological Problems of Heat Power Complexes on Urban Areas

Kril¹,

Demchyshyn²

2021

Geol. ž.

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The impacts of thermal energy plants on the geological environment include the chemical pollution of groundwater and soils, changes in their physical and mechanical properties, and the induction of thermal, vibrational, and electromagnetic fields in the soil bases. The aim of the research is to determine geological hazards in large cities, where thermal powerplants and combined heat and power plants are located. The objects of research were soil foundations, buildings ofthermal power plants of industrial and urban agglomerations of Kyiv, Kharkiv, Dnipro and Odesa. The following hazardous objects have been identified in the thermal power plants located within the settlements: flue-gas stacks (static load, dynamic influences at significant wind loads, impact on the ecological state); cooling towers and cooling pools(leaks, additional soil moisture); engine rooms (static loading and vibration effects from equipment operation); pipelines(leaks, formation of thermal stresses in soils); ash settlers (environmental impact). The positions of heat power plant objects in relation to the functional zones of the city are analyzed. Description of soil bases is given. It is established that the bases of the thermal power plants buildings are mainly dispersed incoherent (sandy) and weakly cohesive (loess-like)soils. Changes in engineering and geological conditions during the operation of the thermal power plants, which can cause dangerous geological processes and provoke emergency situations, have been assessed. Indicators of criteria for identification of geological hazards when assessing risks during the operation of the thermal power plants are proposed on the basis of engineering-geological processes caused by technogenic factors.

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Section: аналіз сучасних дослідженьunclassified

Engineering-Geological and Geoecological Problems of Heat Power Complexes on Urban Areas

Kril¹,

Demchyshyn²

2021

Geol. ž.

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“…The widespread use of quadcopters in various industries highlights their ability to be used in different applications, including important roles in military and law enforcement operations as well as essential functions in fire control departments ( Jha, 2017 ; Sebbane, 2018 ; Castiglioni et al, 2017 ). Quadcopters are strategically deployed in various sectors and have a crucial role in revolutionizing agriculture by offering valuable monitoring capabilities.…”

Section: Introductionmentioning

confidence: 99%

Enhanced trajectory tracking for quadrotors: disturbance observer state feedback control

Ren,

Wang,

Guan

2024

PeerJ Computer Science

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This study investigates the dynamics and trajectory tracking of quadcopters by utilizing the Disturbance Observer-based Control (DOBC) algorithm. The quadcopter’s dynamic model, which consists of six degrees of freedom, includes both disturbances and uncertainties in the model. The DOBC approach incorporates the disturbance model into the system by introducing it at the input variables. It then compensates for disturbances to achieve accurate tracking of different reference trajectories. The simulated trajectories span a range of motion, varying from simple straight paths to complex spiral paths. In order to verify and evaluate the efficacy of the suggested control technique, simulations are performed using MATLAB. The simulations conclusively show that the disturbance observer-based method effectively achieves the tracking of specified reference trajectories in three-dimensional space. The study highlights the effectiveness of the DOBC algorithm in reducing the effects of disturbances and uncertainties, thereby improving the quadcopter’s capacity to accurately track various trajectories.

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“…It is not possible to take sufficient resolution from images by terrestrial photogrammetry. The UAV is used to record the entire tower shell even at height [22].…”

Section: Introductionmentioning

confidence: 99%

Damage detection on cooling tower shell based on model textures

Zahradník,

Roučka

2024

CEJ

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Ensuring the structural integrity of cooling towers is paramount for safety and efficient operation. This paper presents a novel approach for detecting damage on cooling tower shells, utilising textures derived from laser scanning and close-range photogrammetry. The proposed method delves beyond the limitations of solely relying on colour information by harnessing the rich details embedded in various textures, including diffuse, normal, displacement, and occlusion. The study demonstrates the efficacy of this approach for identifying significant concrete damage. A Convolutional Neural Network (CNN) trained on diffuse textures successfully detects high damage instances with minimal misdetection. However, accurately pinpointing low damage, often manifesting as subtle cracks, and mimicking other patterns like air pores, ribbing, and colour variations, presents a formidable challenge. To tackle this challenge, the authors introduce a novel "composed raster layer" that merges information from multiple textures. This pre-processed layer amplifies the visual cues associated with low damage, facilitating its differentiation from similar patterns. While the current implementation employing multi-resolution segmentation and rule-based classification exhibits promising results, further optimization is acknowledged to refine the accuracy of low damage detection. The successful application of textures commonly used in rendering techniques underscores their remarkable potential for enhancing damage detection in civil engineering applications. While acknowledging limitations such as the analysis of a single cooling tower and the reliance on specific software for damage detection, the study proposes future research directions. This research holds significant implications for the field of civil engineering by offering a promising approach for automated and efficient damage detection on cooling tower shells.

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Unmanned aerial vehicle (UAV) application to the structural health assessment of large civil engineering structures

Cited by 9 publications

References 0 publications

Engineering-Geological and Geoecological Problems of Heat Power Complexes on Urban Areas

Engineering-Geological and Geoecological Problems of Heat Power Complexes on Urban Areas

Enhanced trajectory tracking for quadrotors: disturbance observer state feedback control

Damage detection on cooling tower shell based on model textures

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