{"title":"Estimation of eigenfrequencies of oscillations of a one-storey industrial building on the basis of numerical modelling","authors":"Mykhailo Hud, Tetyana Pyndus, Vitaliy Senchyshyn","doi":"10.1016/j.prostr.2026.03.072","DOIUrl":"10.1016/j.prostr.2026.03.072","url":null,"abstract":"<div><div>This article presents the results of a numerical modal analysis carried out on the frame of a single-storey industrial building. The aim of еру ші study to assess how structural modifications influence the natural frequency spectrum and the behavior of vibration modes. Three finite element models were developed: a baseline scheme and two modified versions with changes introduced to the upper and lower sections of the truss. The baseline model included reinforced concrete columns (class C16/20) and steel trusses made from cold-formed welded profiles. In the second model, additional rod elements were added to the ridge zone, while the third incorporated cross-bracing in the lower chord to improve spatial stiffness. The baseline model showed the lowest frequency values, reflecting greater flexibility and sensitivity to dynamic effects. Adding upper elements gradually increased the frequencies without anomalies, whereas the cross-braced configuration produced the widest spectrum, indicating enhanced stiffness and better coordination of structural elements. The results confirm that the introduced modifications improve the dynamic behaviour of single-storey industrial buildings and enhance their resistance to seismic and wind loads.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 417-421"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147652742","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":"Corrosion degradation of Inconel 601 in a static lead melt at temperatures of 450 and 650 °C","authors":"Anatolii Klymenko , Mikhail Byk , Alexander Shapiro , Olexandr Buket , Svitlana Kovalenko , Yurii Kovalenko","doi":"10.1016/j.prostr.2026.03.081","DOIUrl":"10.1016/j.prostr.2026.03.081","url":null,"abstract":"<div><div>The results of the study of corrosion degradation of the INCONEL 601 alloy in a static lead melt with limited oxygen access at temperatures of 450 and 650 °C for 1440 hours, with intermediate examination of samples after 240, 480 and 1000 hours of testing, are presented. It was found that increasing the melt temperature from 450 °C to 650 °C leads to an increase in the corrosion rate of the alloy by more than 10 times. On the other hand, an increase in the duration of the tests is characterized by a tendency to reduce the corrosion rate by approximately 2 times at a melt temperature of 650 °C and by more than 11 times at a melt temperature of 450 °C, which is explained by the formation of surface-blocking protective oxide films and corrosion products. The steel surface morphology of the formed oxide deposits, the structure and elemental composition were studied by X-ray spectral microanalysis with an energy dispersive spectrometer. The results of optical microscopy and durometric analysis are also presented. It was also found that after the tests, a layer of corrosion products of a dense sandwich structure is formed with a clear separation of layers, which include O, Al, Cr, Fe, Ni and Pb, and the quantitative composition of which varies with thickness. It is shown that molten lead, after 1440 hours, replaces nickel in the surface layers of the alloy, penetrating deep into the base metal, and nickel, due to diffusion through the melt, crystallizes on the surface of the melt in the form of nickel oxide.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 470-477"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147652767","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}
Roman Dzhala , Bohdan Verbenets , Vasyl Dzhala , Maryan Melnyk , Oleh Senyuk
{"title":"Non-destructive testing of underground pipelines corrosion protection","authors":"Roman Dzhala , Bohdan Verbenets , Vasyl Dzhala , Maryan Melnyk , Oleh Senyuk","doi":"10.1016/j.prostr.2026.03.018","DOIUrl":"10.1016/j.prostr.2026.03.018","url":null,"abstract":"<div><div>A technology for determining the distribution of cathodic electrochemical protection current and the pipe-to-ground transition resistance for quantitative assessments of the insulating coating condition on various sections of underground pipelines (UP) is presented. The possibility of prompt detection of areas with unsatisfactory UP insulation based on the electromagnetic method of non-contact current and contact measurements of potential for diagnostic examinations, condition monitoring and damage detection of anti-corrosion protection of underground steel pipelines is shown.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 98-101"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147652947","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":"Strength of a bimaterial with slip on the interface and a single-periodic crack array","authors":"Ivan Zvizlo , Nazar Stankevych","doi":"10.1016/j.prostr.2026.03.020","DOIUrl":"10.1016/j.prostr.2026.03.020","url":null,"abstract":"<div><div>A boundary-integral approach is employed to investigate the stress-strain state of an infinite bimaterial comprising two half-spaces with a single-period array of circular internal cracks subjected to static tensile loading. The interface surface of the body is subject to boundary conditions of ideal sliding contact. The problem is reduced to solving a two-dimensional boundary integral equation of the Newtonian potential type with respect to the unknown function of the rupture of the displacements of the defect surfaces. Using the solutions to the problem, the mode I stress intensity factors are calculated, and their dependence on the ratio of the stiffnesses of the bimaterial components, the distance from the defects to the interface, and the angular coordinate of the crack contour point is analyzed.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 109-115"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147652949","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}
Dmytro Voloshyn, Liudmyla Voloshyna, Oleksandr Pleskach, Ivan Pleskach
{"title":"Reliability assurance features of modern railway axlebox assemblies","authors":"Dmytro Voloshyn, Liudmyla Voloshyna, Oleksandr Pleskach, Ivan Pleskach","doi":"10.1016/j.prostr.2026.03.046","DOIUrl":"10.1016/j.prostr.2026.03.046","url":null,"abstract":"<div><div>The axlebox assembly is one of the critical components of a wagon for ensuring overall reliability. According to long-term statistical data, it ranks second, after the braking system, in terms of the number of failures during operation. This directly affects the actual need for unscheduled uncoupling and repairs of freight wagons. To assess the actual reliability of axleboxes, the ‘failure tree’ method was proposed. Failure analysis consists of sequences and combinations of undesirable events. Thus, the ‘failure tree’ is a multi-level graph of causal relationships obtained by tracing dangerous situations in reverse order to identify possible causes of their occurrence. Based on the study results, the structural function of the axlebox assembly in operation was determined, and reliability indicators were calculated using a mathematical model. According to calculations, the actual service life of axleboxes on freight wagons (operating time to failure) is no more than 3 years. This requires adjusting the maintenance and repair schedules for the axleboxes of operating freight wagons.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"81 ","pages":"Pages 264-268"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147653091","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":"Experimental and cohesive zone evaluation of adhesive joints in 3D-printed structures under tensile loads","authors":"R.J.B. Rocha, T.F.R. Ribeiro, R.D.S.G. Campilho, R.F.R. Pinto, J.F.B. Martins, K. Madani","doi":"10.1016/j.prostr.2026.07.022","DOIUrl":"10.1016/j.prostr.2026.07.022","url":null,"abstract":"<div><div>Additive manufacturing (AM) has become an increasingly attractive production method due to its design flexibility and reduced material waste. Nevertheless, the limited build volume often necessitates the joining of printed components to form larger or more complex structures. In this context, adhesive bonding represents a promising solution, although its mechanical performance remains insufficiently explored. This study presents an experimental and numerical investigation of adhesively bonded joints manufactured from AM thermoplastics, focusing on a direct comparison between conventional single-lap joints (SLJ) and step (SJ) joints. The adherends were produced using Polylactic Acid (PLA), Polyethylene Terephthalate Glycol-modified (PETG), and Acrylonitrile Butadiene Styrene (ABS) while two structural adhesives, namely Araldite® 2015 and Sikaforce® 7752, were employed. Tensile tests were conducted to evaluate joint strength, stiffness, energy dissipation, and failure mechanisms for both joint configurations. The experimental results were complemented by numerical simulations based on a Cohesive Zone Modelling (CZM) framework. The findings indicate that joint configuration has a significant effect on overall performance.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"83 ","pages":"Pages 187-195"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148745711","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":"Analysis of longitudinal fracture in moving functionally graded beam structure under creep conditions","authors":"Victor Rizov","doi":"10.1016/j.prostr.2026.07.011","DOIUrl":"10.1016/j.prostr.2026.07.011","url":null,"abstract":"<div><div>The purpose of this paper is to develop a theoretical analysis of longitudinal fracture in a moving functionally graded beam structure under conditions of creep. Analyzing fracture in moving functionally graded beams is important since functionally graded materials are frequently used for manufacturing components of various mechanisms and devices performing different kinds of motion. The beam considered here rotates around a vertical axis. The axis itself moves vertically. The beam hosts a longitudinal crack. The strain energy release rate (SERR) is derived with considering the non-linear creep in the beam under inertia loads. The parameters of creep equation used in the analysis change continuously along the thickness since the beam is functionally graded in the thickness direction. The SERR is verified by the method of <em>J</em> integral. A detailed evaluation of the effects of acceleration of the beam structure on the SERR is carried-out. The influence of various parameters on the SERR - time curve is studied.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"83 ","pages":"Pages 85-94"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148746713","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}
Enrico Pasquale Zitiello, Francesca Porcellini, Antonio Salzano, Maurizio Nicolella
{"title":"Integration of Digital Twins into structural monitoring systems for viaducts: the new frontier of control","authors":"Enrico Pasquale Zitiello, Francesca Porcellini, Antonio Salzano, Maurizio Nicolella","doi":"10.1016/j.prostr.2026.06.047","DOIUrl":"10.1016/j.prostr.2026.06.047","url":null,"abstract":"<div><div>Faced with the current critical issues in infrastructure management and maintenance – linked to ageing, structural complexity and the limitations of traditional inspection techniques – this study proposes a systemic and innovative approach based on the integration of advanced digital technologies. The research develops a methodology that combines Building Information Modelling (BIM), the Internet of Things (IoT) and Machine Learning (ML), with the aim of enabling predictive and dynamic infrastructure management through the creation of Digital Twins. The methodology is applied to two case studies of bridges in Italy, currently under monitoring. The implementation focuses on the initial stages of the process: digital modelling of the structures (with the creation of BIM models containing static data), installation of sensors for real-time collection of dynamic data, and integration of information for the generation of an operational Digital Twin. This unified model allows both the management of alert systems based on predefined thresholds and the processing of in-depth structural diagnoses to support maintenance planning. The proposed methodology also represents a strategic step towards the development of advanced predictive models, promoting a more proactive, efficient and sustainable approach to maintenance.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 360-367"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775365","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}
Matteo Vozzi, Giancarlo Costa, Alberto Contardi, Francesca Brighenti, Daniele Zonta, Maria Pina Limongelli
{"title":"Decision making in bridge management: comparing the prioritization techniques of two Italian operators","authors":"Matteo Vozzi, Giancarlo Costa, Alberto Contardi, Francesca Brighenti, Daniele Zonta, Maria Pina Limongelli","doi":"10.1016/j.prostr.2026.06.055","DOIUrl":"10.1016/j.prostr.2026.06.055","url":null,"abstract":"<div><div>The management of civil infrastructures presents significant challenges due to limited budgets and inherent uncertainties in both structural performance and external conditions. Prioritizing structural assessments and maintenance interventions is essential to allocate resources efficiently, ensure safety and extend the service life of infrastructure assets. Among the available approaches, risk-based and reliability-based prioritization techniques have gained prominence in both academic research and engineering practice. This paper presents a comparative analysis of prioritization strategies proposed by two Italian bridge operators: the SINA company, whose method is currently under experimental development, and the Autonomous Province of Trento. The study applies both methodologies to the same bridge network in Northern Italy, allowing for a direct comparison of how each operator prioritizes assessments and interventions. The comparison highlights key differences in methodology, data requirements, and decision-making criteria. Finally, the paper offers insights into the strengths and limitations of each approach, including their suitability for different operational contexts.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 425-432"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775401","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}
Francesco Campana, Marco Barla, Santina Aiassa, Francesco Antolini, Luisa Alfieri, Alessandro Piazza
{"title":"3D modelling of a complex soil-structure interaction between a new motorway artificial tunnel and an existing underground hydraulic channel","authors":"Francesco Campana, Marco Barla, Santina Aiassa, Francesco Antolini, Luisa Alfieri, Alessandro Piazza","doi":"10.1016/j.prostr.2026.06.053","DOIUrl":"10.1016/j.prostr.2026.06.053","url":null,"abstract":"<div><div>Three-dimensional (3D) numerical modelling is an essential tool for analyzing complex geotechnical problems involving soil-structure interaction. In this study, a 3D numerical model was developed to assess the design and construction of a new artificial tunnel required for the upgrade of an existing motorway. The proposed tunnel crosses above an old underground hydraulic channel used to divert a river, creating a critical interaction between the new and existing infrastructure. The model incorporates detailed geotechnical and structural characteristics, as well as the sequential construction and operational phases. Special attention was given to reproducing the construction process realistically to evaluate its effects on the surrounding ground and structures. The results of the analysis enabled the identification of optimal technological solutions to ensure the stability of the new artificial tunnel and to safeguard the structural integrity of the underlying hydraulic channel.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"84 ","pages":"Pages 409-416"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148775331","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}