Procedia Structural Integrity最新文献

{"title":"Corrosion resistance and other utility properties of selected austenitic nodular cast irons","authors":"Alan Vaško ,&nbsp;Viera Zatkalíková ,&nbsp;Juraj Belan ,&nbsp;Milan Uhríčik ,&nbsp;Václav Kaňa","doi":"10.1016/j.prostr.2024.05.009","DOIUrl":"https://doi.org/10.1016/j.prostr.2024.05.009","url":null,"abstract":"<div><p>This study deals with the evaluation of corrosion resistance and other utility properties of selected austenitic nodular cast irons and their comparison with other (non-austenitic) nodular cast irons. For the investigations, two types of austenitic nodular cast iron were selected: nickel-manganese nodular cast iron EN-GJSA-XNiMn13-7 and nickel-chromium nodular cast iron EN-GJSA-XNiCr20-2. Basic mechanical properties, such as yield strength, tensile strength, elongation, absorbed energy and hardness, were evaluated using mechanical tests. The fatigue limit was determined using low-frequency fatigue tests. Corrosion properties, such as average corrosion rate, corrosion potential and corrosion current density, were determined by the exposure immersion test and the electrochemical potentiodynamic polarisation test. Both corrosion tests were performed in a 3.5% NaCl solution (to simulate seawater) at room temperature. The results of mechanical, fatigue and corrosion tests show that austenitic nodular cast irons have lower strength and fatigue properties but significantly higher plastic properties and corrosion resistance compared to non-austenitic nodular cast irons.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321624004384/pdf?md5=699fb8f6eedf4e77036aa4f5ff757c4b&pid=1-s2.0-S2452321624004384-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141242253","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":"Design and fracture mechanics of lithium-ion batteries","authors":"Davide Clerici ,&nbsp;Francesca Pistorio ,&nbsp;Aurelio Somà","doi":"10.1016/j.prostr.2024.05.005","DOIUrl":"https://doi.org/10.1016/j.prostr.2024.05.005","url":null,"abstract":"<div><p>Fracture mechanics plays a crucial role among the mechanisms causing damage, meant as capacity fade, in lithium-ion batteries. Mechanical stresses arise in the electrode active material particles because of the interaction of lithium ions with electrode microstructure during battery operation. The stresses lead to fractures growth in the electrode, which accelerates detrimental chemical reactions. In this work, a modelling approach is presented to assess the fracture level in the electrode microstructure, evaluating the influence of the current delivered by the battery, and electrode design characteristics, such as the electrode thickness, the electrode active material fraction and the size of the electrode micro-particles. The results show that stress intensity factor linearly increase with the current delivered by the battery. Furthermore, thicker electrodes, greater active material fraction and greater electrode micro-particles represent a more detrimental condition from the fracture mechanics point of view. The results provide a practical electrode design guideline for electrode manufacturing, especially for choosing the right particle size in the electrode powder, the electrode thickness and its composition to limit fracture according to the current expected to be delivered by the battery.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321624004347/pdf?md5=67a18c0cd368f351a02b567a3c6150f8&pid=1-s2.0-S2452321624004347-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141242281","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":"Failure mechanisms of hexagonal-shaped intra-module connections in modular steel building","authors":"Yazmin Sahol Hamid ,&nbsp;Hazrina Mansor ,&nbsp;Mohamad Zarif Mirza Alias ,&nbsp;Nurul Hidayah Saberi ,&nbsp;Norazlinda Elisa Alias","doi":"10.1016/j.prostr.2024.05.021","DOIUrl":"https://doi.org/10.1016/j.prostr.2024.05.021","url":null,"abstract":"<div><p>Modular construction has gained popularity for its cost-effectiveness, time savings, and environmental benefits. This research delves into innovating modular buildings to enhance their aesthetic value in contemporary architectural designs. Traditional rectangular modules have lost architectural significance in the modern era. The study focuses on the failure mechanisms of hexagonal intra-module connections under nonlinear static analysis, aiming for advanced structural design and performance in modular construction. The study tested a control model, a Welded Flange Bolted Web (WFBW) connection, and three variations with different parameters: boundary condition, bolt arrangement, and steel grade. For the boundary condition, the tie constraint between the beam's flanges and the diaphragm was removed. Bolt arrangement was assessed with staggered and non-staggered bolts. Steel grade variations included S275 and S355. Results showed that the WFBW connection outperformed the Bolted Web (BW) connection in load resistance. The most damaged component was the beam, with bearing failure at the upper bolt hole. Non-staggered bolts exhibited larger displacements than staggered bolts. The study emphasized the significance of steel material strength in terms of stress and strain on bolt capacity. It highlights the importance of intra-module connections in modular steel structures and the need to consider design parameters carefully. The findings offer insights into improving modular connections' performance and failure mechanisms, facilitating the creation of aesthetically pleasing and structurally sound modular structures. This nonlinear static analysis aids in developing advanced modular construction designs, enhancing architectural significance in the modern era. By merging structural performance and aesthetics, the study promotes innovative modular construction to meet contemporary architectural demands.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321624004505/pdf?md5=6f68d319129bd56bb7e665380a2f163d&pid=1-s2.0-S2452321624004505-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141242150","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":"Low-velocity Impact Damage of Foam-core Sandwich T-joints: Numerical Study","authors":"Satrio Wicaksono,&nbsp;Lailatul Fitriyah,&nbsp;Annisa Jusuf,&nbsp;Muhammad Raihan Firdaus,&nbsp;Tatacipta Dirgantara,&nbsp;Hermawan Judawisastra,&nbsp;Ditho Ardiansyah Pulungan","doi":"10.1016/j.prostr.2023.12.045","DOIUrl":"https://doi.org/10.1016/j.prostr.2023.12.045","url":null,"abstract":"<div><p>T-joint has an important function in the lightweight structure to connect and transfer loading from one component to the other component. Failure analysis of the T-joint is necessary to obtain the optimum geometry. Since experiments require complex preparation and large costs, numerical modeling is needed to reduce the number of experiments that must be carried out. Numerical modeling in this study was performed to observe the failure modes of foam-core sandwich T-joint under low velocity impact loading. Three failure modes were considered in the current model: delamination, core crushing, and core shearing. To capture these failure modes, traction-separation response and ductile damage were implemented in the adhesive layer and foam material, respectively. The validation process was carried out by comparing the simulation results with experimental results from the literature. The simulation results showed similar failure modes as the experimental results from the literature, which confirms that the parameters used in the current numerical were accurate.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321623007436/pdf?md5=6b264d0dd3e18516c1e0de5ceb6f9c44&pid=1-s2.0-S2452321623007436-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139674514","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":"Flexural Performance and High Temperature Resistance of Slurry-Infiltrated Fiber-Reinforced Cementitious Composite Materials","authors":"Cheolwoo Park,&nbsp;Yong Sik Kwon,&nbsp;Min Kyu Ju,&nbsp;Eunho Lee,&nbsp;Dong Jun Kim,&nbsp;Seungwon Kim","doi":"10.1016/j.prostr.2023.12.048","DOIUrl":"https://doi.org/10.1016/j.prostr.2023.12.048","url":null,"abstract":"<div><p>The slurry-infiltrated fiber-reinforced cementitious composite (SIFRCCs) material used to show much greater flexural strength and fracture toughness than normal cement concrete. By using these performance, the SIFRCCs could be applied for the blast resistant structures such as military purpose structures. However, most gas explosions are accompanied with fire afterward so that these high fracture toughness material needs high temperature resistance simultaneously. The SIFRCCs in this study contains fibers up to 5% by volume fraction. In addition, polymer powder was incorporated into SIFRCCs in order to enhance the fire resistance. The flexural strength and fracture toughness were compare with respected to the variation of polymer powder content, 0%, 0.5%, 1.0% and 1.5%. Powder polymer create capillary pores due to melting and burning when exposure to high temperature and minimize the vapor pressure inside the concrete model and reduces the failure of the concrete model. Specimens were covered with single layer of basalt sheet to study the flexural properties of SIFRCCs with basalt fiber sheet. The flexural strength and toughness of the specimens were investigated before and after the high temperature exposure per ISO 834 standard fire curve.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321623007485/pdf?md5=e24a62599efc31acaa61f4a4e794b9e9&pid=1-s2.0-S2452321623007485-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139674520","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":"Study on Robust Loss Function for Artificial Neural Networks Models in Reliability Analysis","authors":"Wu Zonghui ,&nbsp;He Jian ,&nbsp;Sun Xiaodan","doi":"10.1016/j.prostr.2023.12.021","DOIUrl":"https://doi.org/10.1016/j.prostr.2023.12.021","url":null,"abstract":"<div><p>This paper presents a robust artificial neural network (ANN) loss function in solving samples with questionable data. The Latin hypercube sampling and the uniform experimental design are used as sample generation while ANN with various loss functions is the limit state function approaching method and Monte Carlo simulation is the failure probability computing technique. A marine lubricating oil cooler under a plus-minus triangular wave and internal pressure (1Mpa) is considered as representative of the dynamic implicit model. Three kinds of questionable data are considered: tiny vibrations(±<em>δ</em>₁) caused by the surrounding environment, small deviations caused by equipment error(±<em>δ</em>₂), and large deviations(±Δ) caused by accidental events. And two small probability events are considered: 1. Surrounding error + positive equipment error + a large shock (±Δ) in partial samples; 2. Surrounding error + negative equipment error + a large shock (±Δ) in partial samples. ANN with advanced loss function performs better than traditional loss function in dealing with samples including incorrect data.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321623007199/pdf?md5=7e7baf08c89cb7c9d79f01df3036745e&pid=1-s2.0-S2452321623007199-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139675188","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":"Development of an Innovative Extension for Fatigue Life Monitoring Using a Piezoelectric Sensor","authors":"Aliakbar Ghaderiaram ,&nbsp;Reza Mohammadi ,&nbsp;Erik Schlangen ,&nbsp;Mohammad Fotouhi","doi":"10.1016/j.prostr.2023.12.057","DOIUrl":"https://doi.org/10.1016/j.prostr.2023.12.057","url":null,"abstract":"<div><p>Engineering structures, such as bridges, wind turbines, airplanes, ships, buildings, and offshore platforms, often experience uncertain dynamic loadings due to environmental factors and operational conditions. The lack of knowledge about the load spectrum for these structures poses challenges in terms of design and can lead to either over-engineering or catastrophic failure. This research introduces a robust and innovative device, analogous to a \"Fitbit\" for structures, capable of measuring complex loading conditions throughout the structure's lifespan. The proposed approach involves developing a middleware, referred to as an \"extension,\" which facilitates the transfer of mechanical deformation to a piezoelectric sensor. This approach overcomes challenges associated with directly attaching piezoelectric sensors to the structure's surface such as rupture possibility in higher strain and attaching on rough surfaces. The feasibility study primarily focuses on validating the performance of the extension and monitoring variation trends. The ultimate objective is to develop an Internet of Things (IoT) sensor node capable of measuring applied cyclic loads. To achieve this goal, an electronic system and embedded software will be developed to capture the complex load spectrum and convert it into a fatigue damage index for predicting the structure's fatigue life. The collected data will be transmitted to the user through a wireless communication platform. The proposed sensor design is versatile, allowing for both attachment and embedding and is demonstrated here for monitoring fatigue in engineering structures.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321623007576/pdf?md5=665949671044dfb29eb01aa5054902e9&pid=1-s2.0-S2452321623007576-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139675194","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":"Damage Modelling and Analysis of Composite Blade for Wind Turbine","authors":"Haseung Lee ,&nbsp;Hyunbum Park","doi":"10.1016/j.prostr.2023.12.026","DOIUrl":"https://doi.org/10.1016/j.prostr.2023.12.026","url":null,"abstract":"<div><p>A study was conducted on the change in mechanical properties due to void, one of the fabrication defects of composite materials for wind turbine blades. The study was conducted based on glass fiber fabric, which is mainly applied to wind turbine blades, and the material properties were predicted by simulating random defects with micro and meso modeling of the composite material with void. The basic properties due to void were predicted through the homogenization method, and the failure properties were obtained through progressive failure analysis by applying virtual coupons according to ASTM <span>D3090</span><svg><path></path></svg> and ASTM <span>D6641</span><svg><path></path></svg>. The currently widely used Mori-Tanaka method was used for mean field homogenization, the Hashin theory was used for failure conditions, and the Matzenmiller-Lubliner-Taylor method was used for progressive failure.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321623007242/pdf?md5=871816c0f8a755f8a96cb7fae4161186&pid=1-s2.0-S2452321623007242-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139675239","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":"Some problems of reliability of structural health monitoring","authors":"Vitalijs Pavelko","doi":"10.1016/j.prostr.2023.12.038","DOIUrl":"https://doi.org/10.1016/j.prostr.2023.12.038","url":null,"abstract":"<div><p>Analysis of stress state and strength of piezoelectrical transducer (PET) in-built to structural component which loaded by static or cyclic load is done. All results and conclusions are applicable for thin PET of rectangular shape. The data of the fatigue test of reinforced Al-alloy panel and FEA results were used. The general statistical estimation of fatigue test data was made. The high probability of PET destruction at the cyclic load of typical level is shown for considered conditions. The detailed FEA of in-built PET stress state is performed, and in this base the development of brittle PET destruction at monotonically increasing load was predicted as equi-fragmental crushing (EFC) and its properties were described. The EFC process was adapted to PET destruction at cyclic load and used for construction of likelihood estimation (LHE) of the fatigue strength of PET. Using LHE model, the estimation of parameters of the normal distribution of the fatigue strength was obtained. The general comparison of in-built PET strength and PET at pure tension is given.</p></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321623007369/pdf?md5=846f10b6ad2b7397e7eb6021926fa12f&pid=1-s2.0-S2452321623007369-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139675260","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":"Editorial – ICSI2023","authors":"Pedro Moreira,&nbsp;Paulo Tavares","doi":"10.1016/j.prostr.2024.01.048","DOIUrl":"https://doi.org/10.1016/j.prostr.2024.01.048","url":null,"abstract":"<div><p>In the last two years, since the virtual ICSI2021, research activity in Structural Integrity has seen an exponential increase, spilling over several exciting areas in materials, methods, and applications. For the most part, this has been fueled by both the necessity of diversifying energy sources and the societal pressure to cope with climate change and the issues brought about by the required technological development. Research into metal (mis)behavior in the presence of Hydrogen, to cite an example, which has long been an important topic in Structural Integrity, gradually came under the focus of a growing number of scientists due to its importance in Hydrogen storage. In testimony of the importance of this topic, nearly one-fourth of all ICSI2023 accepted abstracts focusing on Hydrogen Embrittlement-related topics. Concomitantly, the experimental activity related to experimental validation in new simulation concepts and applications, and novel applications for validated simulation models which, for instance, enable sensor virtualization, together with disruptive sensing technologies from the realm of science fiction a mere couple of years ago, are paving the way for a revamped R&amp;D arena, with implications in most Engineering fields.</p><p>From the very start, five editions ago, ICSI has focused on all aspects and scales of structural integrity, ranging from basics to future trends, with special emphasis on multi-scale and multi-physics approaches, and applications to new materials and challenging environments. Current research topics in the realm of Structural Integrity targeted by ICSI2023 include, but are not limited to Fracture and Fatigue, Stress Analysis, Damage Tolerance, Durability, Crack Closure, Joining Technologies, Nanomechanics and Nanomaterials, Ageing, Coatings Technology, Environmental Effects, Structural Health Monitoring, New materials, Surface Engineering, Integrity of biomechanics structures in and many other exciting research topics.</p><p>In 2023, the ICSI organization focused on inviting lecturers related to topics that dominate the contemporary status in Structural Integrity, such as Prof. Frank Cheng from the University of Calgary, working in the field of corrosion engineering and pipeline reliability, Prof. Su Taylor from Queen's University in Belfast, devoted to the development of structural health monitoring of sustainable infrastructure; Prof. José Correia from Porto University, fully engaged in Structural Integrity of energy infrastructure; Prof. César Azevedo well known for his contribution in structural failure and Prof. Zagorac, from Belgrade University, working in the field of material behavior under extreme conditions. Like previous editions, ICSI2023 has been organized into a general track and a number of thematic symposia. Apart from Procedia Structural Integrity, a special issue from Engineering Failure Analysis will cover ICSI2023.</p><p>The response to the organization's efforts has been outsta","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2452321624000489/pdfft?md5=7904950247f83741f67b326729806c04&pid=1-s2.0-S2452321624000489-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139993065","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}