Procedia Structural Integrity最新文献

{"title":"Bridges Resilience and Climate Extremes: A 30-Year Review of Failures in Italy","authors":"Alessandro Scala,&nbsp;Lorenzo Brezzi,&nbsp;Laura Niero,&nbsp;Fabiola Gibin,&nbsp;Nicola Fabbian,&nbsp;Carlo Pellegrino,&nbsp;Paolo Simonini,&nbsp;Paolo Zampieri","doi":"10.1016/j.prostr.2026.06.064","DOIUrl":"10.1016/j.prostr.2026.06.064","url":null,"abstract":"<div><div>Bridges and viaducts are critical components of transportation networks, ensuring not only territorial continuity, but also economic development and emergency accessibility. Their proper functioning is therefore crucial for the resilience and safety of entire regions. Unfortunately, structural damage to these structures is not uncommon, and in some cases, such failures have involved road users and resulted in casualties. Among the most frequent causes are anthropogenic factors such as negligence or accidental impacts. However, a concerning proportion of cases is related to natural events, particularly floods and landslides. In recent years, the growing frequency of extreme natural rainfall events, triggering floods, landslides, and other hydrogeological hazards, has revealed new vulnerabilities in infrastructure systems. Many of these phenomena are consistent with climate-driven scenarios, which has increased the unpredictability and intensity of environmental stressors. These hazards can compromise the structural integrity of a bridge either through direct mechanical impact or by altering the surrounding terrain, activating failure mechanisms that are not always accounted for in traditional maintenance or design frameworks. This study presents some results from a database of bridge failures of varying severity that occurred in Italy over the last 30 years, with particular attention to those coinciding with extreme weather events. This study focuses on bridge distress associated with climate-related events, investigated through a systematic review of publicly available sources. The results underscore the importance of incorporating environmental hazard factors into prioritization and risk mitigation strategies for transport infrastructure.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 497-504"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compare stochastic optimal sensor placement strategies for bridge monitoring","authors":"Alberto Barontini,&nbsp;Maria Giovanna Masciotta,&nbsp;Paulo B. Lourenço,&nbsp;Giuseppe Brando","doi":"10.1016/j.prostr.2026.06.046","DOIUrl":"10.1016/j.prostr.2026.06.046","url":null,"abstract":"<div><div>Optimal Sensor Placement (OSP) is emerging as a key component of vibration-based Structural Health Monitoring (SHM) to support the efficient management of bridges and other critical assets. OSP seeks to minimise monitoring costs while maximising the quality of information obtained. Traditional OSP approaches resort to preliminary numerical models, whose reliability is often compromised by uncertainties in geometry, material properties and structural condition, particularly in existing structures. This study addresses these limitations by reviewing and comparing existing OSP methodologies that explicitly account for uncertainty with particular attention to methods based on the optimisation of the determinant of the Fisher Information Matrix, including extensions of the Effective Independence approach. The reviewed methods are reformulated where necessary to enable a consistent comparison using common objective functions and optimisation strategies. A case study is presented to illustrate their performance, followed by a discussion of key findings and directions for future research.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 352-359"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Battery-free passive Radio Frequency Identification (RFID) sensors for corrosion monitoring of external bonded posttension tendons in prestressed concrete structures.","authors":"Martina Giglio,&nbsp;Yannick Falaise,&nbsp;Stéphane Rioual,&nbsp;Benoit Lescop,&nbsp;Thomas Fanget,&nbsp;Edoardo Proverbio,&nbsp;Laurent Gaillet,&nbsp;Sylvain Chataigner","doi":"10.1016/j.prostr.2026.06.002","DOIUrl":"10.1016/j.prostr.2026.06.002","url":null,"abstract":"<div><div>Durability issues in post-tensioned prestressed concrete structures are rising high concern to owners and managers due to their increasing age. Non-invasive corrosion monitoring is essential to ensure structural integrity in aggressive environments. This work presents a battery-free passive Radio Frequency Identification (RFID) sensor designed to detect steel wires or strands corrosion in external bonded post tensioning tendons through variations in radio signal response. The sensing principle relies on the electromagnetic interference between an RFID tag and a conductive metallic layer that acts as a corrosion-sensitive element embedded in the plastic duct. As this layer deteriorates due to corrosion, its changing physical properties affect its shield effect, altering the signal received by an Ultra High Frequency (UHF)-RFID reader. The experimental setup employs two tags: a constantly active reference tag and a second, initially shielded, corrosion-sensitive tag. During exposure to a simulated water condensation environment, the protective layer of the sensitive tag progressively degraded, reducing its shielding capability. This process allowed the tag to respond gradually to the reader, leading to measurable increase in the Received Signal Strength Indicator (RSSI). Once the corrosion of the metallic layer is complete, the RSSI of the sensitive tag becomes indistinguishable from that of the unshielded reference tag. The simplicity of the device, combined with the absence of an external power supply, makes this technology suitable for deployment in remote or hard-to-access locations. It offers a cost-effective and reliable solution for real-time, wireless corrosion monitoring.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 9-16"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Temperature Effects on Prestressed Concrete Bridge Based on Long-Term Monitoring Data: Case Study","authors":"Michele Morici,&nbsp;Laura Gioiella,&nbsp;Laura Ierimonti,&nbsp;Fabio Micozzi,&nbsp;Andrea Torsani,&nbsp;Francesco Pascarella,&nbsp;Ilaria Venanzi,&nbsp;Filippo Ubertini,&nbsp;Andrea Dall’Asta","doi":"10.1016/j.prostr.2026.06.012","DOIUrl":"10.1016/j.prostr.2026.06.012","url":null,"abstract":"<div><div>To ensure the long-term safety, durability, and performance of bridges, it is critical to account for the effects of thermal variations on structural behavior. Temperature changes induce volumetric expansions and contractions, which when restrained, generate mechanical stresses that may compromise structural integrity. Accurately understanding and quantifying these thermal effects is especially important in the context of Structural Health Monitoring (SHM), where temperature-induced responses must be distinguished from other structural signals to avoid misinterpretation of the bridge’s condition. Modern SHM systems incorporate advanced sensing technologies, such as thermocouples, to acquire real-time temperature data. These systems facilitate the analysis of thermal gradients, long-term temperature trends, and their relationship to mechanical responses. This study presents the design and initial results of a static monitoring system implemented on an operational roadway bridge selected as a case study. The monitoring system provides continuous data on temperature-related structural behavior, supporting the identification of trends and potential anomalies. Based on the case study, the paper also explores different methodologies for monitoring and interpreting thermal effects by integrating temperature measurements with structural response data to evaluate their correlation.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 89-96"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Health Monitoring of a Full-Scale Prestressed Reinforced Concrete Bridge: Preliminary Results from a Case Study","authors":"Francesco Mariani,&nbsp;Laura Ierimonti,&nbsp;Prajwal Giri,&nbsp;Arash Rahimi,&nbsp;Enrique Garcìas-Macìas,&nbsp;Leonardo Casali,&nbsp;Manuel Boccolini,&nbsp;Filippo Ubertini,&nbsp;Ilaria Venanzi","doi":"10.1016/j.prostr.2026.06.099","DOIUrl":"10.1016/j.prostr.2026.06.099","url":null,"abstract":"<div><div>This study reports on the initial outcomes of an extensive full-scale experimental program conducted on a prestressed reinforced concrete bridge mockup equipped with a continuous monitoring system. The main purpose of the project is to develop a reliable and high-quality benchmark dataset to support the testing, validation, and comparison of continuous structural health monitoring methodologies. The bridge mockup is composed of three longitudinal girders and features a combination of pretensioned and post-tensioned tendons. To allow controlled variations of the prestressing level, the post-tensioning ducts were intentionally left ungrouted. A dense and multi-type sensor network was deployed on the structure to capture its response under both static and dynamic conditions. The instrumentation includes triaxial MEMS accelerometers, biaxial inclinometers, strain gauges, load cells, and thermocouples, allowing the simultaneous acquisition of data related to vibrations, rotations, strains, applied prestressing forces, as well as temperature and humidity variations. The complete experimental program comprises a series of static and dynamic tests, along with a set of controlled damage scenarios introduced by progressively reducing stiffness and prestressing level under predefined configurations. This paper focuses on the results obtained during the initial phase of monitoring, when the bridge was still in an undamaged state. The modal parameters extracted from the recorded data are analyzed, and their dependence on environmental and operational conditions is discussed. During this early monitoring period, the structure underwent three different structural configurations because of modifications to the concrete barriers installed along the deck, offering a valuable opportunity to investigate the sensitivity of the measured structural response to such configuration variations.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 773-780"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Methodology for Prioritization and Planning of Special Inspections, Safety Assessments, and Repair","authors":"Vittorio Palma,&nbsp;Davide Presti,&nbsp;Alberto Contardi,&nbsp;Giuseppe Pasqualato,&nbsp;Simone Celati,&nbsp;Isabella Mazzatura,&nbsp;Walter Salvatore","doi":"10.1016/j.prostr.2026.06.081","DOIUrl":"10.1016/j.prostr.2026.06.081","url":null,"abstract":"<div><div>In the management of existing infrastructure, particularly bridges and viaducts, it is essential to ensure maximum safety while optimizing investments and reducing the impact of construction activities on traffic. This article presents the methodologies for prioritizing the execution of special inspections, safety verifications and repair work, contained within the “Assessment Document” a technical-strategic elaboration developed by SINA S.p.A., in collaboration with the FABRE university consortium. This document is proposed as a reference framework for the systematic assessment of the structural condition of assets and for the planning of maintenance activities. For the execution of the special inspections a methodology has been developed, based on the Guidelines for the risk classification and management of existing bridges, which assigns a priority level to each bridge determined by the level of defectiveness of the post-tensioning system and by parameters representing vulnerability and structural criticality. The method for scheduling safety assessments, based on indicators such as detected defectiveness, outcomes of special inspections, exposure, and hazard of the structure, is also described. Finally, the procedure for prioritizing interventions for repair or durability enhancement activities is outlined, considering factors such as structural defectiveness, the integrity of concrete surfaces, and the condition of the water disposal system. The primary objective of this process is to support the Operator in the optimal allocation of its financial and technical resources. In this sense, the Assessment Document, with the integration of priority criteria, is an indispensable tool used by the Manager for prudent planning of activities and the maintenance of high standards of infrastructure safety and durability over time.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 630-637"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Analyses of GFRP with Embedded Fibre Optics Manufactured using Standard and Additive Manufacturing Methods","authors":"Magdalena Mieloszyk ,&nbsp;Suvam Bhadra","doi":"10.1016/j.prostr.2026.01.034","DOIUrl":"10.1016/j.prostr.2026.01.034","url":null,"abstract":"<div><div>This paper aims to analyse the structural differences between glass fibre reinforced polymer (GFRP) with embedded fibre optic sensors, in relation to the manufacturing method. Two methods were analysed: standard infusion and additive manufacturing (AM). For the AM method, a modified fused deposition modelling (FDM) technique was selected.</div><div>Structural analyses were performed using a Scanning Electron Microscopy (SEM) and a THz spectrometer. The results showed that the impact of embedded fibre optics on the internal structure of the composite depends on the manufacturing method. In the standard method, the embedded fibres are surrounded by a larger amount of polymer (referred to as a ”resin pocket”), while in the AM structure, part of the next 3D-printed layer shifts over the embedded fibre.</div><div>The samples were divided into two sets: one remained intact, while the other was exposed to elevated temperature and tensile loading. The structural integrity of the samples from both sets was assessed using SEM and the THz spectrometer. It was observed that the temperature affected the polymer matrix (resulting in matrix cracking) and the quality of the fibre/matrix interface (with fibres being pulled out). These analyses provided a deeper understanding of the degradation processes in GFRP under mechanical and environmental loading.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"77 ","pages":"Pages 256-263"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Service load analyses for fatigue life calculations and laboratory tests of welded joints of trolleybus bodyworks","authors":"Miloslav Kepka ,&nbsp;Miloslav Kepka jr. ,&nbsp;Radovan Minich ,&nbsp;Jaroslav Vaclavik","doi":"10.1016/j.prostr.2026.01.036","DOIUrl":"10.1016/j.prostr.2026.01.036","url":null,"abstract":"<div><div>The operation of city buses, trolleybuses and battery buses on uneven roads causes dynamic and variable amplitude loading of these road vehicles. Such loading can lead to fatigue damage to critical nodes of the bodywork or other vehicle components. Stress-time histories are most often random processes. Such loading processes can be determined by measurement. Fatigue analysis of these processes is fundamentally different from dynamic analysis. Dynamic analyses are performed in the frequency domain. Fatigue analyses must be performed in the time domain to determine the so-called load spectra (histograms of load cycles). Fatigue damage can then be estimated using an appropriate fatigue damage accumulation hypothesis. The contribution presents the results of extensive measurements on several vehicles and in various operating conditions. The so-called design stress spectra for bodywork dimensioning and load spectra for laboratory tests of their critical structural nodes are derived.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"77 ","pages":"Pages 272-278"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface – In-service Damage of Materials: Diagnostics and Prediction","authors":"Oleg Yasniy ,&nbsp;Olha Zvirko ,&nbsp;Volodymyr Iasnii ,&nbsp;Yuri Lapusta","doi":"10.1016/j.prostr.2026.03.001","DOIUrl":"10.1016/j.prostr.2026.03.001","url":null,"abstract":"","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 1-2"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147652895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fatigue crack growth prediction of automotive steels using ensemble-based machine learning methods","authors":"Oleh Yasniy ,&nbsp;Iryna Didych ,&nbsp;Dmytro Tymoshchuk ,&nbsp;Iaroslav Pasternak ,&nbsp;Vyacheslav Nykytyuk ,&nbsp;Hryhorii Shymchuk ,&nbsp;Dmytro Radyk","doi":"10.1016/j.prostr.2026.03.021","DOIUrl":"10.1016/j.prostr.2026.03.021","url":null,"abstract":"<div><div>The propagation of fatigue cracks under various loading conditions is one of the key problems in modern mechanical engineering and the operation of engineering structures. During operation, structural elements of machines and mechanisms are subjected to cyclic loading, which contributes to the initiation and gradual development of cracks. A crack is a source of stress concentration, and a local increase in stress occurs in the area of its tip, leading to its progressive growth. As a result, the cross-section of the part is gradually weakened, and failure occurs suddenly, without noticeable plastic deformation, even in highly ductile metals.</div><div>In this work, the fatigue life of automotive steel was predicted using the ensemble machine learning methods, namely, random forest and boosted trees. Experimental data describing the dependence of the fatigue crack length <em>a</em> on the number of loading cycles <em>N</em> and the overloading factor <em>R_ol</em> for the stress ratio <em>R</em> = 0.1 were used to train and test the models. The random forest method demonstrated high accuracy and stability of prediction with a mean absolute percentage error (MAPE) of 1.12%, while for boosted trees method showed the error equals to 3%. The results confirm the effectiveness of ensemble methods in predicting fatigue crack growth of automotive steels under cyclic loading conditions.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 116-122"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147652632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}