Procedia Structural Integrity最新文献_第8页

Experimental investigation of Notched Identification based on Maximum Resistance Force in Steel Specimens using an Artificial Neural Network 基于最大阻力的钢试件缺口识别的人工神经网络实验研究

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.098

A. Oulad Brahim , R. Capozucca , E. Magagnini , S. Khatir , Y. Bouzid

引用次数: 0

Enhancement of Mechanical Properties of high-Mn TWIP Steel with Fast Heating process: Insights into Microstructural Evolution and Performance Optimization 快速加热提高高mn TWIP钢的力学性能：组织演变与性能优化研究

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.100

Atef Hamada , Ali Khosravifard , Matias Jaskari , Antti Järvenpää , Mahmoud Khedr

{"title":"Enhancement of Mechanical Properties of high-Mn TWIP Steel with Fast Heating process: Insights into Microstructural Evolution and Performance Optimization","authors":"Atef Hamada , Ali Khosravifard , Matias Jaskari , Antti Järvenpää , Mahmoud Khedr","doi":"10.1016/j.prostr.2025.06.100","DOIUrl":"10.1016/j.prostr.2025.06.100","url":null,"abstract":"<div><div>This study explores the impact of fast heating (FH) technique on the microstructural evolution of heavily cold-rolled TWIP steel, focusing on the temperature range of 1000-1200°C for a duration of 5 seconds. Utilizing a Gleeble 3600 simulator, FH experiments were characterized by rapid heating rates of 500°C/s and cooling rates of 400°C/s. The promoted microstructures were analyzed using Electron Backscatter Diffraction (EBSD), while mechanical properties were evaluated through microhardness measurements and uniaxial tensile tests. The results revealed that the FH process promotes a fully recrystallized microstructure. At 1000°C, this FH cycle yields an ultrafine-grained structure with an average grain size of approximately 2.5 µm, which synergistically enhances both tensile strength (750 MPa) and extreme ductility (105%). However, the FH cycle at 1200°C results in a coarser-grained structure with an average grain size of about 20 µm. This microstructure, while reducing tensile strength to 650 MPa, significantly increases ductility to 120%. These findings illustrate a valuable synergy between FH parameters and microstructural development, offering a strategic approach to optimizing the mechanical performance of TWIP steels.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 581-587"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580326","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

Assessment of Fatigue Life Under Three-Point Bending: Comparing S-D-S-ER and D-S-ER Techniques 三点弯曲下疲劳寿命评估：S-D-S-ER和D-S-ER技术的比较

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.067

Ibrahim T. Teke , Ahmet H. Ertas

{"title":"Assessment of Fatigue Life Under Three-Point Bending: Comparing S-D-S-ER and D-S-ER Techniques","authors":"Ibrahim T. Teke , Ahmet H. Ertas","doi":"10.1016/j.prostr.2025.06.067","DOIUrl":"10.1016/j.prostr.2025.06.067","url":null,"abstract":"<div><div>In this study, it has been presented a novel approach to enhancing structural fatigue performance through the development and comparison of two methodologies: The Sub-modeling-Density-Shape-Element Removal (S-D-S-ER) method and the traditional Density-Shape-Element Removal (D-S-ER) method. Using three-point bending fatigue tests, the S-D-S-ER method is shown to significantly improve fatigue life and overall structural integrity by integrating sub-modeling into the design process. This contrasts with the conventional D-S-ER method, which displayed standard mechanical behavior and a markedly shorter lifespan. Notably, the S-D-S-ER model exhibited mechanical behavior similar to viscous materials—a characteristic often observed in composites—while the D-S-ER method did not. These results highlight the potential of advanced numerical modeling, particularly the S-D-S-ER approach, to enhance fatigue resistance and durability. This advancement is particularly relevant for the design and optimization of 3D-printed components, which are becoming crucial in industrial and biomedical applications. The adoption of such innovative methods could lead to significantly more reliable, long-lasting designs, with profound implications for the future of structural engineering and additive manufacturing.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 365-371"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580489","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

Dual-actuator mixed-mode bending tests on adhesive joints of different thickness 不同厚度粘接接头双致动器混模弯曲试验

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.066

Ihssane Kididane , Kamila Kozáková , Stephan Marzi

引用次数: 0

pH estimation at corrosion fatigue crack tip in 13Cr-4Ni martensitic stainless steel 13Cr-4Ni马氏体不锈钢腐蚀疲劳裂纹尖端pH值的估算

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.055

A. Barabi , P.-A. Deschênes , R. Lacasse , D. Thibault , M. Trudeau , M. Brochu

{"title":"pH estimation at corrosion fatigue crack tip in 13Cr-4Ni martensitic stainless steel","authors":"A. Barabi , P.-A. Deschênes , R. Lacasse , D. Thibault , M. Trudeau , M. Brochu","doi":"10.1016/j.prostr.2025.06.055","DOIUrl":"10.1016/j.prostr.2025.06.055","url":null,"abstract":"<div><div>The blades of hydraulic turbines experience repeated loading during operation, promoting initiation and propagation of fatigue cracks in a corrosive environment. To identify the environmental damage mechanism—anodic dissolution or hydrogen embrittlement—potential (<em>E</em>) and <em>pH</em> must be measured locally at the crack tip, as values for these parameters measured at the crack tip differ from those measured in the bulk electrolyte. Direct measurement of potential drop (<em>∆E=E<sub>exterior</sub> - E<sub>interior</sub></em>) and <em>pH</em> at the crack tip is, however, challenging. This study focuses on estimating local <em>pH</em> at the fatigue crack tip using thermodynamic analysis combined with <em>∆E</em> measurements at the crack tip. The methodology was applied to the tip of cracks propagating in a martensitic stainless steel compact tension specimen (CT). <em>∆E</em> was measured as the crack propagated in a simulated crack environment (deaerated synthetic river water). The potential dropped from 0.075 V<sub>SHE</sub> in the synthesized river water to -0.09 V<sub>SHE</sub> in the deaerated synthesized river water. XPS analysis of the corrosion product found on the fracture surface after testing revealed it consisted of <em>Fe₂O₃</em> and <em>FeCr₂O₄</em>. Based on a Pourbaix diagram, <em>E =</em> -0.09 V<sub>SHE</sub> coupled with presence of <em>Fe₂O₃</em> and <em>FeCr₂O₄</em> as corrosion products yields a thermodynamically stable solution with a <em>pH</em> ranging from 4.4 to 4.6.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 285-291"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580715","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

Boundary element method for 3D fracture mechanics analysis in quasicrystal solids under thermal loading 热载荷下准晶固体三维断裂力学分析的边界元法

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.019

Roman Kushnir , Heorhiy Sulym , Iaroslav Pasternak , Vitalii Kozelko

引用次数: 0

Fatigue strength of laminated bamboo lumber 层压竹材的疲劳强度

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.031

Pascal Franck , Oliver Bletz-Mühldorfer , Leander Bathon , Ronja Scholz , Frank Walther

{"title":"Fatigue strength of laminated bamboo lumber","authors":"Pascal Franck , Oliver Bletz-Mühldorfer , Leander Bathon , Ronja Scholz , Frank Walther","doi":"10.1016/j.prostr.2025.06.031","DOIUrl":"10.1016/j.prostr.2025.06.031","url":null,"abstract":"<div><div>Today, the global demand for renewable and sustainable materials is higher than ever. A promising material in this regard is the fast-growing natural resource bamboo. Research activities in the field of bamboo have increased in recent years due to its availability in many regions of the world and its positive influence on the ecosystem (e.g., high potential for carbon restoration). The mechanical properties of bamboo are comparable or even superior to those of commonly used wood species. Processing the raw bamboo culms into engineered bamboo products can enhance these properties, as it eliminates many naturally grown flaws and misalignments of the culm. In this study, the properties of laminated bamboo lumber (LBL) made from Phyllostachys pubescens (“Moso” bamboo) under fatigue loading in tensile direction were explored. Understanding the fatigue behavior of materials used in various technical fields is essential because all components are exposed to cyclic loads. Additionally, the load levels leading to material failure are significantly lower than the characteristic values measured under (quasi)-static loading. The initial cyclic tests of the LBL specimens yielded very promising results for potential applications in technical fields, such as civil engineering. The digital image correlation (DIC) systems were used to gain an initial understanding of the damage mechanisms that led to the failure of the specimens. It could be proven, that the nodal areas of the bamboo tend to be high-loaded and are preferred initiation points of fracture.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 119-125"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580775","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

Determination of CFRP intralaminar fracture properties in the calibration of a non-local damage model for crash application: Unidirectional material 用于碰撞应用的非局部损伤模型校准中CFRP板间断裂特性的测定：单向材料

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.036

Maria Pia Falaschetti , Francesco Rondina , Johan Birnie Hernandez , Luca Raimondi , Enrico Troiani , Lorenzo Donati

{"title":"Determination of CFRP intralaminar fracture properties in the calibration of a non-local damage model for crash application: Unidirectional material","authors":"Maria Pia Falaschetti , Francesco Rondina , Johan Birnie Hernandez , Luca Raimondi , Enrico Troiani , Lorenzo Donati","doi":"10.1016/j.prostr.2025.06.036","DOIUrl":"10.1016/j.prostr.2025.06.036","url":null,"abstract":"<div><div>Fibre-reinforced composites have excellent mechanical and dissipation properties, making them particularly valuable for applications requiring the material to absorb high kinetic energies, such as in crush applications. Simulating a crushing event using physically-based implementations can be complex. To properly implement Non-local Damage Models, it is essential to understand the intralaminar properties of the material. The Compact Compression and Compact Tension tests are the most used experimental tests to obtain these properties. This study is dedicated to the calibration procedure of the intralaminar fracture energies and damage parameters for the Waas-Pineda damage model in the ESI-VPS commercial software, for a unidirectional laminate. The calibration process involves the simulation and comparison of Compact Compression and Compact Tension tests with experimental data. Validation is accomplished by comparing numerical crashworthiness results with experimental data. The comparison demonstrates the effectiveness of the Wass-Pineda model in capturing the behaviour of crashworthy composite components.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 153-159"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580812","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

Integrating experimental bond-slip models intro finite element modeling of CFRP-strengthened concrete prisms 结合试验粘结滑移模型，介绍了cfrp加固混凝土柱的有限元建模方法

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.038

Aseel Salameh , Rami Hawileh , Maha Assad , Jamal Abdalla

{"title":"Integrating experimental bond-slip models intro finite element modeling of CFRP-strengthened concrete prisms","authors":"Aseel Salameh , Rami Hawileh , Maha Assad , Jamal Abdalla","doi":"10.1016/j.prostr.2025.06.038","DOIUrl":"10.1016/j.prostr.2025.06.038","url":null,"abstract":"<div><div>The overall performance and failure mechanisms of externally bonded concrete structures with fiber-reinforced polymers (FRP) sheets/plates are significantly influenced by the bond behavior between FRP composites and concrete substrates. Finite element (FE) modeling and analysis depend on an accurate description of this bond-slip connection. This study represents the integration of experimental bond-slip models into finite element simulations of concrete prisms reinforced with carbon fiber-reinforced polymers (CFRP) sheets. For CFRP-to-concrete joints, experimental bond tests were carried out in a three-point bending configuration to determine bond-slip relationships. Cohesive zone modeling approaches were then used to implement the resulting bond-slip curves into a nonlinear FE model. The experimental data from CFRP-strengthened concrete prisms tests under various conditions were used to verify the FE model. The findings demonstrate the ability of the proposed FE approach incorporating experimentally derived bond-slip models to accurately capture the complex behavior of CFRP-strengthened concrete elements including debonding failures. Moreover, this paper demonstrates the significance of accurate bond characterization and offers a framework for better finite element modeling of reinforced concrete structures using fiber-reinforced polymers, allowing for more accurate structural evaluations and design optimizations.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 166-172"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580814","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

Mechanical characterization of basalt fibre reinforced composites using energy methods 用能量法对玄武岩纤维增强复合材料进行力学表征

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.042

M. Totaro, G. Risitano, G. Di Bella, P. Corigliano, D. D’Andrea

引用次数: 0