Procedia Structural Integrity最新文献_第9页

Sensitivity to hydrogenation of steel operated in the steam pipeline bend of the TPP and restored by heat treatment 在TPP蒸汽管道弯道内运行的钢对氢化的敏感性，通过热处理恢复

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.086

Halyna Krechkovska , Ivan Tsybailo , Oleksandra Student

{"title":"Sensitivity to hydrogenation of steel operated in the steam pipeline bend of the TPP and restored by heat treatment","authors":"Halyna Krechkovska , Ivan Tsybailo , Oleksandra Student","doi":"10.1016/j.prostr.2025.08.086","DOIUrl":"10.1016/j.prostr.2025.08.086","url":null,"abstract":"<div><div>Thermal power equipment is operated under high temperature and steam pressure, maneuvering mode of operation, high cyclic, static and impact loads, and corrosion and hydrogenation effects of process environments. As a result of such operational factors, the structure and mechanical properties of steel change, damages are formed, and there is a risk of uncontrolled fracture of structures critical for the energy supply of Ukraine. The research is devoted to the restored heat treatment (RHT) of the operated (2.86∙10<sup>5</sup> h) heat-resistant steel 12Kh1MF of the steam pipe stretched zone bends of the main steam pipe of the thermal power plant (TPP). The RHT mode was proposed using double normalization with tempering. As a result, carbides dissolve and solid solution homogenizes, grain and carbide sizes decrease, pores heal, pores are located in the grain body, and mechanical properties of steel such as hardness, strength, ductility, and impact toughness increase. To assess the stability properties of operated and restored steels to the hydrogenation were carried out tensile for tests in the air after their preliminary electrolytic hydrogenation. It was found that hydrogenation of the operated steel worsened its strength and plastic properties. The characteristics of the restored steel, although somewhat worsened due to the presence of hydrogen in the metal, remained higher than the values regulated by the industry document for steel in the initial state. Thus, the improvement in the structure and properties of heat-resistant steel (including after its hydrogenation), established after RHT, substantiates the prospect of its further use to extend the service life of steam pipe bends.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"72 ","pages":"Pages 149-156"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934120","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}

引用次数: 0

Leveraging marble powder for enhanced structural performance and mitigation of carbon emission in concrete 利用大理石粉增强结构性能，减少混凝土中的碳排放

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.108

R. Ashwathi , A. Mohanraj

{"title":"Leveraging marble powder for enhanced structural performance and mitigation of carbon emission in concrete","authors":"R. Ashwathi , A. Mohanraj","doi":"10.1016/j.prostr.2025.07.108","DOIUrl":"10.1016/j.prostr.2025.07.108","url":null,"abstract":"<div><div>The demand for sustainable construction materials has necessitated an impulse to explore and integrate supplementary cementitious materials into the concrete. This shift promotes eco-friendly environment and enhances performance of concrete. One such promising solution is strategic utilization of marble powder, a non-biodegradable by-product of marble industry. The marble powder being rich in calcium carbonate hypothesized to enhance the pozzolanic behavior and improve the filling ability, thereby making it a potential substitute to cement in concrete. In this investigation, the marble powder is partially replaced at varying percentage from 0 to 30% in the place of cement which maximizes the performance while reducing the environmental impact. This attempt addresses two critical challenges: lowering of carbon di oxide emission associated with manufacturing of cement and efficient solid waste management. The key performance of the research is to assess the mechanical and durability properties of concrete at varying percentage of marble powder across different ages of curing. This attempt underscores the technical feasibility and environmental benefits of marble powder as a substitute for cement and paves a way in attaining circular economy by enhancing sustainable construction practice. The transformation of industrial by-product into valuable construction material paves a way towards efficient practices and cost effectiveness. Ultimately, the strategic utilization of marble waste into the concrete steps towards achieving sustainable development goals in the construction sector.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 698-705"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878192","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}

引用次数: 0

Performance evaluation of banana, coir, and jute fiber reinforced epoxy composites for sustainable construction applications 香蕉、椰子和黄麻纤维增强环氧复合材料在可持续建筑应用中的性能评价

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.098

Karthick Rasu , P. Nedunchelian , K. Harishankar , S. Yogesh Babu , M. Sriraam , G. Gokula Venkatesh

{"title":"Performance evaluation of banana, coir, and jute fiber reinforced epoxy composites for sustainable construction applications","authors":"Karthick Rasu , P. Nedunchelian , K. Harishankar , S. Yogesh Babu , M. Sriraam , G. Gokula Venkatesh","doi":"10.1016/j.prostr.2025.07.098","DOIUrl":"10.1016/j.prostr.2025.07.098","url":null,"abstract":"<div><div>Rising interest in environmentally friendly and sustainable materials for construction has driven the development of polymer composites reinforced with natural fibers. This study focuses on the performance evaluation of hybrid epoxy matrix composites reinforced with banana, coir, and jute fibers in various proportions, aiming to identify optimal fiber combinations for construction-related applications. Five different hybrid composites were made-up with a constant fiber volume fraction of 60% and epoxy resin as the matrix material. The composite samples were tested to determine their tensile, flexural, impact strengths, and surface hardness. Among the samples, the composite with 40% banana, 30% coir, and 30% jute fibers exhibited superior performance, achieving the highest values in tensile (56.63 MPa) and flexural strength (67.72 MPa), impact resistance (9.46 J), and hardness (74.74). The results indicate a synergistic effect in the ternary fiber combination, enhancing both mechanical performance and moisture resistance. These findings suggest that the developed hybrid composite is a viable candidate for sustainable construction applications, particularly in non-structural elements such as partition panels, false ceilings, and interior cladding, offering an environmentally responsible alternative to conventional materials.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 619-626"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878339","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}

引用次数: 0

Performance of Sustainable Concrete Incorporating Bagasse Ash, Foundry Sand, And Steel Fibres 掺有蔗渣灰、铸造砂和钢纤维的可持续混凝土性能

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.089

Ragupathi V. , K. Angu Senthil , Jagadeesan R. , S. Arulmozhi

引用次数: 0

Integrating A BIM-Based Approach to the Planning, Analysis, and Sustainable Design for a Modern Hospital Building 基于bim的现代医院建筑规划、分析和可持续设计集成方法

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.082

Dharshan V , Bogineni Haripreeth Chowdary , Kevin Sunny , Kartikaya Gupta , V.R. Prasath Kumar

{"title":"Integrating A BIM-Based Approach to the Planning, Analysis, and Sustainable Design for a Modern Hospital Building","authors":"Dharshan V , Bogineni Haripreeth Chowdary , Kevin Sunny , Kartikaya Gupta , V.R. Prasath Kumar","doi":"10.1016/j.prostr.2025.07.082","DOIUrl":"10.1016/j.prostr.2025.07.082","url":null,"abstract":"<div><div>Utilizing the Building Information Modelling (BIM) platform, this report shares the sustainable design, analysis, and planning of a multi-storey hospital. The project employs a complete BIM approach that involves 2D drafting in AutoCAD, 3D modeling in Autodesk Revit, and structural analysis and design through Tekla Structural Designer. In addition, 6D sustainability assessments are executed through Autodesk Insight and One Click LCA for the purpose of checking energy performance and environmental impact. The hospital, which is modelled as a G+4 structure, applies waffle slab systems and effectively uses glazing that is perfected to improve thermal efficiency and daylighting. Besides, a number of structural and architectural aspects have been changed ensuring the relevance of the standards to be followed, and for performance optimization too. The study demonstrates how BIM-enabled workflows can be utilized most efficiently and effectively for the creation of sustainable, efficient, code-compliant healthcare infrastructure.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 493-500"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878858","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}

引用次数: 0

Investigating the Effectiveness of Different Shear Reinforcement Configurations on the Shear and Flexural Behaviour of RCC Beams 研究不同抗剪配筋结构对碾压混凝土梁抗剪和抗弯性能的影响

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.087

Saravanakumar P. , Pon Ilango M. , Abinaya Ishwarya G.K. , Sanjay M. , Ugesh G. , Pravin S.

{"title":"Investigating the Effectiveness of Different Shear Reinforcement Configurations on the Shear and Flexural Behaviour of RCC Beams","authors":"Saravanakumar P. , Pon Ilango M. , Abinaya Ishwarya G.K. , Sanjay M. , Ugesh G. , Pravin S.","doi":"10.1016/j.prostr.2025.07.087","DOIUrl":"10.1016/j.prostr.2025.07.087","url":null,"abstract":"<div><div>An experimental study was conducted to investigate the effects of varying the orientation of shear reinforcement in reinforced cement concrete (RCC) beams. The primary objective of the study was to assess the impact of different shear reinforcement configurations on the shear strength and flexural behavior of the beams. The ultimate goal was to reduce the quantity of reinforcement bars used in the concrete beams while maintaining or improving their strength and shear-resisting capacity. In the experimental study, RCC beams were fabricated and subjected to controlled loading conditions to analyze their behavior under shear and flexure. The different shear reinforcement configurations were implemented, and their effects on the shear capacity, flexural capacity, and crack behavior were closely observed and recorded. The study aimed to determine which configuration provided the most efficient shear resistance, particularly in terms of reducing the quantity of steel reinforcement while still meeting the structural requirements of the beam. In addition to the shear behavior, the flexural behavior and crack patterns of the beams were also observed. The study concluded that the configuration of shear reinforcement has a substantial effect on the flexural capacity and crack development in the beams. Beams with inclined shear reinforcement patterns exhibited higher flexural strength and a more controlled cracking behavior compared to beams with single-legged stirrups. The maximum load carrying of 125 kN which is very closed to the load carrying of control beam attained for inclined stirrup beam specimen. Hence, the study suggests that alternative shear reinforcement configurations, particularly inclined systems, could be used to optimize material usage without compromising the strength and performance of RCC beams.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 533-539"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878863","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}

引用次数: 0

Performance Evaluation of One-Part Geo-Polymer Concrete 单组分土工聚合物混凝土性能评价

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.058

Yankesh , Rajesh Pal , Neelam Singh , Akash Priyadarshee , Deepak Rana , Vikas Kumar

{"title":"Performance Evaluation of One-Part Geo-Polymer Concrete","authors":"Yankesh , Rajesh Pal , Neelam Singh , Akash Priyadarshee , Deepak Rana , Vikas Kumar","doi":"10.1016/j.prostr.2025.07.058","DOIUrl":"10.1016/j.prostr.2025.07.058","url":null,"abstract":"<div><div>This study for sustainable material has become crucial for India’s rapid infrastructure growth, which contributes heavily to greenhouse gases emissions and resources depletion. Geo-Polymer Concrete (GPC) proposes a greener solution, but conventional method of two-part systems involves complexity in mix designs and hazardous liquid activators. This work explores a experimental study on one-part GPC using dry Anhydrous Sodium Metasilicate (ASM) and Ground Granulated Blast Furnace Slag (GGBS), with different proportions based on IS code guidelines. When the dosage increased from 0% to 14 %, a significant improvement recorded in strength, peaking at 47.97 MPa at 14% ASM. However, beyond this range, strength gains slightly declined, likely due to excess alkalinity. The test results showed early strength development at 7 days, good workability at a 0.41 water-to-binder ratio, and good flexural and split tensile strengths. Also, a cost analysis of GPC was done with conventional concrete which results in 20 percentage saving of cost. These results confirm that one-part GPC is a simpler, and high-performance alternative suitable for eco-friendly and fast-paced construction and reduce costs.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 311-318"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878986","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}

引用次数: 0

Finite Element Analysis of Concrete-Filled Steel Tube Columns Under Uniaxial and Biaxial Loading Using ABAQUS 单轴和双轴荷载作用下钢管混凝土柱有限元分析

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.063

Siddharth Deswal , Abhay Kumar Chaubey , Ravi Malik , Md Irfan Ansari , Ashok Kumar Mishra

{"title":"Finite Element Analysis of Concrete-Filled Steel Tube Columns Under Uniaxial and Biaxial Loading Using ABAQUS","authors":"Siddharth Deswal , Abhay Kumar Chaubey , Ravi Malik , Md Irfan Ansari , Ashok Kumar Mishra","doi":"10.1016/j.prostr.2025.07.063","DOIUrl":"10.1016/j.prostr.2025.07.063","url":null,"abstract":"<div><div>This research examines the structural behaviour of Concrete-Filled Steel Tubular (CFST) columns under axial, uniaxial, and biaxial loading conditions through Finite Element Analysis (FEA). Two different column configurations—long and short columns are modelled using ABAQUS/CAE 6.14, which allows for detailed simulations of stress distribution, failure modes, and load-displacement characteristics. The study specifically focuses on understanding how column geometry and the type of loading influence the structural performance and stability of CFST columns. Key findings from the analysis indicate that biaxial loading generates the highest stress concentrations and leads to greater instability compared to axial and uniaxial loading scenarios. In contrast, axial loading provides more stable performance and better resistance to deformation. The research also offers valuable design recommendations for improving the strength and resilience of CFST columns in practical applications. Lastly, future research directions are proposed to further optimize the design and enhance the performance of CFST columns under various loading conditions.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 350-357"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878991","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}

引用次数: 0

Risk Based Work Selection Method for Structural Anomalies 基于风险的结构异常作业选择方法

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.065

Rajesh Dube

引用次数: 0

Novel Test Methodology for Peak Strain-Controlled Notched Fatigue Test 峰值应变控制缺口疲劳试验的新方法

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.006

Shreebanta Kumar Jena , Punit Arora , Suneel K. Gupta , J. Chattopadhyay

{"title":"Novel Test Methodology for Peak Strain-Controlled Notched Fatigue Test","authors":"Shreebanta Kumar Jena , Punit Arora , Suneel K. Gupta , J. Chattopadhyay","doi":"10.1016/j.prostr.2025.08.006","DOIUrl":"10.1016/j.prostr.2025.08.006","url":null,"abstract":"<div><div>It is well understood that the fatigue crack initiation life of a structural component having a notch/discontinuity is primarily governed by two parameters: (i) the (i) magnitude of the localised peak equivalent strain amplitude at the notch tip and (ii) the extent of the strain gradient at the notch at/ahead of the notch tip. However, there hardly exists any standard test procedure for conducting notch fatigue tests. The current test practices existing in literature tend to bring out the combined effect of peak equivalent strain and strain gradient on fatigue life instead of the individual effects. The present study aims to develop a new test methodology where the individual effects of (i) peak equivalent strain and (ii) strain gradient on fatigue crack initiation life have been brought out explicitly by conducting fatigue tests on tubes of C-Mn steel. Axial/torsion strain-controlled tests have been performed on a tube having a one-sided, through-thickness circular hole at the centre of the gauge region. Different hole diameters representing different strain gradient conditions have been investigated. The test methodology makes use of the pretest finite element analyses in such a way that it results in a common peak equivalent strain amplitude for different gradient conditions (different hole diameter) or different peak equivalent strain amplitudes for a common hole diameter. The remote strain/relative displacements outcome from the pretest finite element analyses has been used as a controlled parameter in the actual test to get the desired peak strain amplitude at the hole tip. The elastic-plastic pre-test FE analyses use three decomposed Chaboche material models and have been calibrated from the saturated hysteresis loops obtained from uniaxial low cycle fatigue tests on solid unnotched specimens.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"71 ","pages":"Pages 34-41"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902531","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}

引用次数: 0