Blar i Publikasjoner fra Cristin - SINTEF Narvik på forfatter "Täljsten, Björn"
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A comparison between laser, scanning, photogrammetry and infrared scanning to create 3D digital models of existing concrete bridges
Popescu, Cosmin; Täljsten, Björn; Blanksvärd, Thomas; Elfgren, Lennart (Chapter, 2020)Routine bridge inspections usually consist of visual observations. These inspections are time-consuming and subjective. There is a need to identify new inspection techniques for infrastructure that reduce traffic disturbance, ... -
Analysis of Digital Twins in the Construction Industry: Practical Applications, Purpose, and Parallel with other Industries
Saback, Vanessa; Popescu, Cosmin; Blanksvärd, Thomas; Täljsten, Björn (Peer reviewed; Journal article, 2024) -
Asset Management of Existing Concrete Bridges Using Digital Twins and BIM: a State-of-the-Art Literature Review
Saback, Vanessa; Popescu, Cosmin; Blanksvärd, Thomas; Täljsten, Björn (Peer reviewed; Journal article, 2022)The need to optimize investments in bridge maintenance has created a demand for improved bridge management systems (BMS). Outdated practices in bridge inspection and constant advances in information technology have also ... -
Non-destructive testing of prestressed concrete bridges - Experiments from field test
Holmquist, Mats; Täljsten, Björn; Popescu, Cosmin (Chapter, 2022)Most of the structures in the transport infrastructure are built of reinforced concrete, and many of our large bridges are built of prestressed concrete. A large part of these were built before 1980, and could theoretically ... -
Prediction of Strain in Embedded Rebars for RC Member, Application of Hybrid Learning Approach
Mirzazade, Ali; Popescu, Cosmin; Täljsten, Björn (Peer reviewed; Journal article, 2023)The aim of this study was to find strains in embedded reinforcement by monitoring surface deformations. Compared with analytical methods, application of the machine learning regression technique imparts a noteworthy reduction ... -
Remote bridge inspection using optical methods
Popescu, Cosmin; Täljsten, Björn; Blanksvärd, Thomas; Elfgren, Lennart (Chapter, 2022)Routine bridge inspections usually consist of visual observations. These inspections are time-consuming and subjective. There is a need to identify new inspection techniques for infrastructure that reduce traffic disturbance, ... -
Semi‑autonomous inspection for concrete structures using digital models and a hybrid approach based on deep learning and photogrammetry
Mirzazade, Ali; Popescu, Cosmin; Gonzalez-Libreros, Jaime; Blanksvärd, Thomas; Täljsten, Björn; Sas, Gabriel (Peer reviewed; Journal article, 2023)Bridge inspections are relied heavily on visual inspection, and usually conducted within limited time windows, typically at night, to minimize their impact on traffic. This makes it difficult to inspect every meter of the ... -
Wireless monitoring for assessment of concrete railway bridges - Experiences from field tests
Täljsten, Björn; Popescu, Cosmin; Nilforoush, Rasoul (Chapter, 2022)This paper focus on assessment on a prestressed three span concrete box bridge by the use of a wireless monitoring system in combination with visual inspection. The bridge is located in the very north of Sweden, in Abisko. ... -
Workflow for Off-Site Bridge Inspection Using Automatic Damage Detection-Case Study of the Pahtajokk Bridge
Mirzazade, Ali; Popescu, Cosmin; Blanksvärd, Thomas; Täljsten, Björn (Peer reviewed; Journal article, 2021)For the inspection of structures, particularly bridges, it is becoming common to replace humans with autonomous systems that use unmanned aerial vehicles (UAV). In this paper, a framework for autonomous bridge inspection ...