Article
Computer Science, Interdisciplinary Applications
Sheng Zhuge, Xiangpeng Xu, Lijun Zhong, Shuwei Gan, Bin Lin, Xia Yang, Xiaohu Zhang
Summary: Deflection measurement for bridges is crucial during operation, and this study presents a contactless technique utilizing UAVs to monitor bridge deflection with high accuracy. By extracting the laser spot center and tracking bridge feature points through deep learning and scale-invariant features registration, the proposed method has shown promising results in both simulation and field experiments, with an RMSE of less than 0.5 mm in laboratory conditions.
COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Jian Zhang, Liming Zhou, Yongding Tian, Shanshan Yu, Wenju Zhao, Yuyao Cheng
Summary: This article investigates the VIV measurement of a long-span suspension bridge using noncontact sensing strategies. Through analyzing monitoring data, the dynamic properties of the bridge and characteristics of the VIV event were identified, and an early warning framework for VIV events of long-span suspension bridges was proposed.
COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Welington Vital, Ramon Silva, Marcus V. G. de Morais, Brunno Emidio Sobrinho, Rodrigo Pereira, Francisco Evangelista Jr
Summary: A new proposal combining Bridge Information Modeling with Terrestrial Laser Scanning (TLS) and photogrammetry was applied to obtain the digital model of an existing bridge. The laser scanning process not only allowed for the identification of pathologies and damages in the bridge's concrete, but also demonstrated the efficiency and cost-effectiveness of remote sensing techniques in bridge projects compared to conventional manual surveys. The integration of TLS and photogrammetry resulted in the acquisition of a 3D digital model with detailed information on concrete damage.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Qiang Gao, Jiangming Kan
Summary: This study develops an automatic diameter at breast height (DBH) measurement method based on structure from motion (SfM) photogrammetry. The proposed method utilizes a new image acquisition technique and an automatic estimation pipeline to achieve high accuracy and fast DBH measurement. The results show that the method has comparable accuracy to traditional physical measurements and has potential applications in forest inventory.
Article
Chemistry, Analytical
Karel Pavelka, Eva Matouskova, Karel Pavelka Jr
Summary: This paper compares modern geomatics technologies for deriving growth parameters in forest management. The results of measurements conducted over the past five years are summarized, focusing on a case project involving a mountain spruce forest. Terrestrial laser scanning (TLS), terrestrial and drone close-range photogrammetry, PLS mobile technology, and ALS are all discussed in terms of data joining, usability, and economics. Drones are found to be useful for estimating quantities and inspecting the health of spruce forests, but PLS is identified as the best solution for deriving forest parameters in forest management.
Article
Chemistry, Analytical
Li Miao, Linlin Zhu, Changshuai Fang, Ning Yan, Xudong Yang, Xiaodong Zhang
Summary: Profile measurement plays a crucial role in the manufacturing of highly curved freeform surfaces. A low-cost, dual-axis rotation scanning method is proposed in this paper to address the challenges of measuring highly curved surfaces with arbitrary shapes. The method allows for adapting to changes in curvature in any direction and provides a system error calibration technique.
Article
Environmental Sciences
Christoph Gollob, Tim Ritter, Ralf Krassnitzer, Andreas Tockner, Arne Nothdurft
Summary: This study tested the use of an iPad Pro for forest inventory, showing higher detection rate and DBH measurement accuracy compared to traditional methods, despite longer data acquisition time. Consumer-level handheld devices with integrated laser scanners are expected to be developed as cost-efficient alternatives for forest inventory practice.
Article
Environmental Sciences
Masoud Mohammadi, Maria Rashidi, Vahid Mousavi, Ali Karami, Yang Yu, Bijan Samali
Summary: In the current era of information and technology, emerging remote advancements in infrastructure asset inspections, such as digital twins, provide safer, cheaper, and more reliable alternatives to traditional inspections. This paper aims to evaluate digital point clouds developed from an Australian heritage bridge using UAV-based photogrammetry and TLS, comparing points' distribution, outlier noise, data completeness, surface deviation, and geometric accuracy, ultimately showing the potential of these technologies in bridge inspection.
Article
Chemistry, Physical
Bernadette Domenges, Mayerling Martinez Celis, Florent Moisy, Jacques Lacaze, Babette Tonn
Summary: This study investigates the impact of trace impurities on the nodularity of spheroidal graphite cast irons during manufacturing, revealing the presence of impurities at the interface between the spheroid and protrusion alongside magnesium. Using Focused Ion Beam and atomic resolution scanning-transmission electron microscopy, it is shown that impurities can disrupt the spheroidizing effect of magnesium without a definite crystallographic relationship between protrusions and underlying spheroids.
Article
Remote Sensing
Daniel Kuekenbrink, Mauro Marty, Ruedi Boesch, Christian Ginzler
Summary: This study evaluates the performance of different close-range remote sensing devices for tree detection and diameter at breast height (DBH) extraction in forests. The results show that terrestrial laser scanning systems (TLS) have the highest tree detection rate, while drone-based laser scanning systems (UAVLS) have the lowest tree detection rate. The novel GoPro approach performs moderately well in tree detection and is comparable to LiDAR devices in DBH extraction.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Materials Science, Multidisciplinary
J. C. Lourenco, L. P. Souza, M. I. S. T. Faria, C. A. Nunes, C. R. Tomachuk, M. A. Baker
Summary: In this study, Inconel 625 based alloys with different iron contents were prepared and their corrosion behavior in 3.5% NaCl was investigated. It was found that alloys with 10-15% iron showed improved corrosion behavior, potentially enabling faster and more economical welding processes.
Article
Forestry
Aaron M. Sparks, Alistair M. S. Smith
Summary: In this study, the ability of the ForestView(R) algorithm to detect individual trees, classify tree species, live/dead status, canopy position, and estimate height and DBH in a complex forest was assessed. The algorithm showed high accuracy in stands with lower canopy cover but lower accuracy in stands with higher canopy cover.
Article
Forestry
Joshua Carpenter, Daniel Rentauskas, Nikhil Makkar, Jinha Jung, Songlin Fei
Summary: Field-based forest inventory plots are crucial for forest studies, providing valuable information about forests. They are now used for validation and training data in forest feature extraction and machine learning algorithms. However, the uncertainty in plot location measurements has undermined their usefulness. A method for accurately measuring plot center coordinates using low-cost targets and orthoimagery has improved the accuracy by an order of magnitude.
JOURNAL OF FORESTRY
(2023)
Article
Engineering, Mechanical
Seyed Morteza Hosseini, Ahmad Ghasemi-Ghalebahman, Mohammad Azadi, Seyed Mohammad Jafari
Summary: This study investigated the use of acoustic emission signals for crack initiation detection in a ductile cast iron. Two methods of analysis were compared, with the logarithmic cumulative Shannon entropy and Kullback-Leibler relative entropy curves proving to be reliable for accurately detecting crack initiation.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Architecture
Alessio Cardaci, Antonella Versaci, Pietro Azzola
Summary: Resiliency in concrete infrastructures is crucial, and proper conservation/maintenance plans are necessary for their lifespan and value preservation. Monitoring their condition using cameras and UAVs is essential. This paper focuses on the experience of Nembro arch bridge.
NEXUS NETWORK JOURNAL
(2023)
Article
Chemistry, Physical
Jacek Kwiatkowski, Wojciech Anigacz, Damian Beben
Article
Chemistry, Physical
Damian Beben, Janusz Ukleja, Tomasz Maleska, Wojciech Anigacz
Article
Construction & Building Technology
Tomasz Maleska, Damian Beben, Joanna Nowacka
Summary: This study conducted numerical analysis on the Tolpinrud railway tunnel in Norway under seismic excitations using the DIANA FEA program. The use of corrugated steel plates and backfill in constructing soil-steel composite tunnels was found to offer cost savings. Recommendations were made based on analysis of four different numerical models, suggesting that model I is the most suitable for this type of analysis.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Pawel Slabonski, Beata Stankiewicz, Damian Beben
Summary: The research focuses on effective use of reclaimed asphalt pavement (RAP) with the application of a rejuvenator to improve interaction with asphalt mixtures, enabling the use of higher RAP content at lower temperatures to meet heavy traffic pavement requirements.
Article
Environmental Sciences
Damian Beben, Tomasz Maleska, Piotr Bobra, Jozef Duda, Wojciech Anigacz
Summary: This study assesses the impact of traffic-induced vibrations on humans and residential buildings through field investigation and data analysis. The results indicate that the received vibration velocity values were below the permissible levels, but the distance between the building and the fence played an important role in damping vibrations.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Physical
Tomasz Maleska, Damian Beben
Summary: The behaviour of soil-steel composite bridges under seismic events is not yet recognized. The results of the numerical study can aid in the design of these bridges in seismic zones and highlight the significant effect of strengthening design on their behavior.
Article
Engineering, Geological
Tomasz Maleska, Damian Beben
Summary: The use of corrugated steel plate (CSP) bridges and culverts is becoming more common. However, there is little research on how these structures respond to seismic excitation. This study aims to investigate the impact of seismic excitation on a CSP bridge with a span exceeding 17 m and a variable depth of the soil cover. The results show that the depth of the soil cover has a significant effect on the bridge's response.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Construction & Building Technology
Tomasz Maleska, Damian Beben
Summary: This paper presents a numerical study on the seismic behavior of soil-steel composite bridges with different soil cover depths, as well as the analysis with different boundary conditions.
STEEL AND COMPOSITE STRUCTURES
(2022)
Proceedings Paper
Construction & Building Technology
W. Anigacz, D. Beben, J. Kwiatkowski
Summary: The authors aimed to preserve the classic steel railway bridge structure on the Odra River in Opole, Poland. They used a wide range of measurement techniques and geodetic instruments, with a key focus on hybrid measurement techniques. Terrestrial laser scanning was the major technique used, along with flat photogrammetry and laser rangefinder. The extensive data collected will be used to compare historical construction solutions with modern design proposals.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
Proceedings Paper
Construction & Building Technology
T. Maleska, D. Beben
Summary: Soil-steel bridges are becoming a popular alternative to typical steel and concrete bridges, with design codes requiring consideration of minimum soil cover height. Research shows that increasing soil cover can reduce internal forces in the steel shell structure under static and dynamic loads, such as passing vehicles. Seismic analyses of soil-steel bridges are essential, especially in areas prone to seismic activity.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
Proceedings Paper
Construction & Building Technology
J. Nowacka, D. Beben, T. Maleska
Summary: This paper presents a numerical analysis of a soil-steel bridge in Waliszow, Poland, examining the feasibility of using EPS blocks as an alternative to RC relieving slab. The results show that EPS is cheaper and faster to use, but caution should be taken as it may lead to increased internal forces in the shell.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
