Procedia Structural Integrity最新文献_第6页

The effect of thread length in cancellous bone fixation under shear loading: A biomechanical study 剪切载荷下螺纹长度对松质骨固定的影响：一项生物力学研究

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.030

P. Langourani-Kosteletou , G. Chelidonis , E.D. Pasiou , O. Savvidou , S.K. Kourkoulis

{"title":"The effect of thread length in cancellous bone fixation under shear loading: A biomechanical study","authors":"P. Langourani-Kosteletou , G. Chelidonis , E.D. Pasiou , O. Savvidou , S.K. Kourkoulis","doi":"10.1016/j.prostr.2025.06.030","DOIUrl":"10.1016/j.prostr.2025.06.030","url":null,"abstract":"<div><div>The thread length of bone screws is a crucial design parameter directly related to the length of the thread engagement in the bone. For porous materials, like cancellous bone, the length of engagement is correlated with the holding power of screws. The objective of this study is to assess the effect of the thread length in fixation under shear loading, a relatively unexplored area of investigation. For this purpose, sawbone blocks were used as a substitute for cancellous bone, fixed with either a single 6.5 solid-core cancellous screw with a thread length of 16 mm or a single screw with a 32 mm thread length (lag by design). The experiments (shear loading of the constructs) were carried out using an MTS Insight frame. The stiffness, proportionality limit, conventional yield load, and yield displacement were determined for each test piece. The results indicated that the constructs fixed with longer threaded screws had statistically significantly greater stiffness, proportionality limit, and yield force compared to the constructs fixed with shorter threaded screws. This study suggests that the length of thread engagement may affect the resistance of fixation to shear loading.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 112-118"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580774","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

The Effect of Alternating Wet-Dry Conditions in the Fatigue Life of S355G10+M Steel under Corrosion-Fatigue Testing 干湿交替条件对S355G10+M钢腐蚀疲劳试验疲劳寿命的影响

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.053

M. Álvarez , A. Vergara , M. Escalero , M. Olave

引用次数: 0

Enhancing Crack Resistance and Strength of Recycled Aggregate Concrete with End-of-Life Tire Steel Fibers 废旧轮胎钢纤维增强再生骨料混凝土抗裂性和强度

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.047

Asad Zia , Jaroslav Prokop , Ivan Holly

引用次数: 0

Laser shape setting feasibility for promoting shape memory effect in thin Ti rich-NiTi wires 提高富钛镍钛细线形状记忆效应的激光成形可行性

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.017

Carlo Alberto Biffi , Gloria Ischia , Stefano Gialanella , Ausonio Tuissi

引用次数: 0

Effect of solid-solution temperature on the microstructure and mechanical properties in low-cobalt secondary hardening ultra-high strength steel 固溶温度对低钴二次硬化超高强度钢组织和力学性能的影响

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.016

Haofei Zhu , Zhiping Xiong , Jianwen Mao , Xingwang Cheng

{"title":"Effect of solid-solution temperature on the microstructure and mechanical properties in low-cobalt secondary hardening ultra-high strength steel","authors":"Haofei Zhu , Zhiping Xiong , Jianwen Mao , Xingwang Cheng","doi":"10.1016/j.prostr.2025.07.016","DOIUrl":"10.1016/j.prostr.2025.07.016","url":null,"abstract":"<div><div>The effects of solid-solution temperature on the microstructure and mechanical properties of low-cobalt M<sub>2</sub>C and NiAl co-precipitated secondary hardening steel were investigated. With increasing solid-solution temperature, the microstructure undergoes complex evolution, characterized by an increase in retained austenite, dissolution of primary M<sub>7</sub>C<sub>3</sub> carbides, and growth of prior austenite grains. Correspondingly, the yield strength and impact toughness in both quenched and aged conditions initially improve. This is attributed to the dissolution of the primary M<sub>7</sub>C<sub>3</sub> carbides, which enhances the precipitation strengthening of M<sub>2</sub>C carbides and inhibits crack nucleation, thereby improving both strength and toughness. However, when the solid-solution temperature exceeds 900 °C, the coarsening of prior austenite grains leads to a reduction in Hall-Petch strengthening and decreased crack propagation resistance, resulting in a decline in yield strength and toughness in the aged state. The optimal solid-solution temperature is found to be 900 °C, where an excellent balance between strength and toughness is achieved.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"69 ","pages":"Pages 113-120"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587883","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

Experimental Performance Evaluation of Shape Memory Alloy-Based Active Composites Under Aerodynamic Loading 形状记忆合金基活性复合材料气动载荷下的实验性能评价

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.003

Stefano Rodinò , Elio Matteo Curcio , Diego Perrone , Teresa Castiglione , Carmine Maletta

{"title":"Experimental Performance Evaluation of Shape Memory Alloy-Based Active Composites Under Aerodynamic Loading","authors":"Stefano Rodinò , Elio Matteo Curcio , Diego Perrone , Teresa Castiglione , Carmine Maletta","doi":"10.1016/j.prostr.2025.07.003","DOIUrl":"10.1016/j.prostr.2025.07.003","url":null,"abstract":"<div><div>This study presents an experimental investigation of a novel shape memory alloy (SMA)-based active composite designed for aerodynamic applications. The research addresses critical interface challenges in SMA-polymer composites through an innovative multi-material architecture incorporating a high-temperature silicone matrix and PC/ABS structural layer. Systematic wind tunnel experiments characterized the shape morphing capabilities under various aerodynamic loading conditions, with flow velocities ranging from 0 to 125 km/h. The experimental results demonstrate robust morphing performance, achieving a maximum deflection of 52 mm under static conditions and maintaining 60% of this capability (31.6 mm) at maximum flow velocity. The composite’s deformation profiles exhibit nonlinear behavior with increasing aerodynamic loads while preserving consistent actuation characteristics across all test conditions. This stability is attributed to the strategic integration of compliant and structural layers, effectively addressing previously reported interface limitations. The findings validate the effectiveness of the proposed material architecture for active aerodynamic components, particularly in automotive applications requiring reliable performance under varied operating conditions. The experimental characterization provides valuable insights for future development of adaptive structures, establishing a foundation for optimizing geometric and material parameters in SMA-based active composites.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"69 ","pages":"Pages 20-25"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587886","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

Characterization of Vibration Damping in Nitinol Samples Manufactured through Selective Laser Melting 选择性激光熔化制备镍钛诺样品的减振特性

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.012

Diego Scaccabarozzi , Carlo Alberto Biffi , Jacopo Fiocchi , Abdelrahman Mohamed Ragab M. Ahmed , Marco Giovanni Corti , Ausonio Tuissi , Bortolino Saggin

{"title":"Characterization of Vibration Damping in Nitinol Samples Manufactured through Selective Laser Melting","authors":"Diego Scaccabarozzi , Carlo Alberto Biffi , Jacopo Fiocchi , Abdelrahman Mohamed Ragab M. Ahmed , Marco Giovanni Corti , Ausonio Tuissi , Bortolino Saggin","doi":"10.1016/j.prostr.2025.07.012","DOIUrl":"10.1016/j.prostr.2025.07.012","url":null,"abstract":"<div><div>This research explores the potential of 3d-printed Nitinol samples to mitigate transmitted vibration levels, aiming at the development of interface dampers for space applications. The study investigates the correlation between the measured damping behaviour of Nitinol samples, measuring the loss factor with the half-power bandwidth approach in free-constrained conditions to avoid unwanted and unpredictaqw02ble dissipation given by the constraints. Among the influencing parameters, sample printing directions and post-additive heat treatments have been investigated. Results showed that by carefully tailoring the heat treatment process, it is possible to modulate the damping properties of Nitinol parts. This opens possibilities for engineers to design and manufacture lightweight aerospace components with optimised structural properties, minimising the overall mass and enhancing vibration characteristics. Moreover, this study paves the way for further research to optimise the Selective Laser Melting (SLM) process and post-treatment procedures for Nitinol alloys.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"69 ","pages":"Pages 80-88"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587895","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

Sustainable urban heat island mitigation with carbonated aggregate-based cement composites 以碳化骨料为基础的水泥复合材料的可持续城市热岛缓解

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.005

G. Goracci , E. Saeed , M.B. Ogundiran , C. Aymonier , J.S. Dolado

{"title":"Sustainable urban heat island mitigation with carbonated aggregate-based cement composites","authors":"G. Goracci , E. Saeed , M.B. Ogundiran , C. Aymonier , J.S. Dolado","doi":"10.1016/j.prostr.2025.06.005","DOIUrl":"10.1016/j.prostr.2025.06.005","url":null,"abstract":"<div><div>The rapid increase in atmospheric CO<sub>2</sub> levels, predominantly resulting from anthropogenic activities, constitutes a significant challenge due to its critical role in driving climate change. Major CO<sub>2</sub> emitters include the steel and cement industries, with Portland cement production alone responsible for approximately 0.98 tonnes of CO<sub>2</sub> per tonne of clinker produced. This study addresses CO<sub>2</sub> emissions from these industries through a multifaceted approach that combines direct emissions reduction, advanced CO<sub>2</sub> capture technologies, and Urban Heat Island (UHI) mitigation strategies. This methodology employs by-products from the food and steel industries as agents for carbon capture and storage (CCS) through mineral carbonation. These carbonated by-products are subsequently transformed into cementitious materials exhibiting high solar reflectivity, specifically designed for urban infrastructure applications. These materials are intended to mitigate the UHI effect, thereby resulting in lower urban temperatures and reduced energy consumption for air conditioning. Enhanced urban livability and public health benefits have been observed, characterized by a reduced incidence of heat-related illnesses. In conclusion, the holistic strategy of utilizing industrial waste for CO<sub>2</sub> sequestration and developing cool cements presents a promising pathway to combat climate change. This approach not only addresses CO<sub>2</sub> emissions but also promotes sustainable urban environments and supports a circular economy.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"67 ","pages":"Pages 30-38"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572451","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

Enhancing alkali-silica reaction resistance with nanomaterials: A comparative study of nano metakaolin and carbon nanotubes 纳米材料增强抗碱硅反应能力：纳米偏高岭土与碳纳米管的比较研究

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.013

Hwan Lee , Savitha Srinivasan , Raissa Douglas Ferron

引用次数: 0

Investigation of Cubic Stiffness Non-Linearity for a Bolted Joint 螺栓连接三次刚度非线性研究

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.034

Faisal Hussain , Sanjay Ingole

{"title":"Investigation of Cubic Stiffness Non-Linearity for a Bolted Joint","authors":"Faisal Hussain , Sanjay Ingole","doi":"10.1016/j.prostr.2025.08.034","DOIUrl":"10.1016/j.prostr.2025.08.034","url":null,"abstract":"<div><div>Practically every structure that is used in engineering designs and applications is made up of substructures and a number of components that are connected to one another through a wide variety of independent linkages. Moreover, the increased flexibility within the joint structural system significantly influences the dynamic characteristics of these joints. In order to get accurate simulations and assessments of dynamical responses, it is important to include cubic stiffness non-linearity as a nonlinear joint parameter. Non-linear identification of joint parameter system is the process of creating mathematical models of real structures that are accurate and take into account the non-linearity factor, which is based on measurements of the responses. The present research work aims to identify the non-linear rotational cubic stiffness non-linearity in a cantilever beam bolted structure. This is done by modeling a cantilever beam with a bolted joint at one end and applying sub-structure synthesis theory for the modeling of parameters, including linear and non-linear factors in two sub-structure classes. The linear factors are calculated at a small level of frequency, whereas the cubic stiffness non-linear rotational factor is determined through responses to frequency measurements. Frequency estimation was done under loading conditions, and non-dimensional natural frequencies were obtained by considering stiffness parameters within the response amplitude, and a non-linear zone was established for joint parameter estimation. Through the joint parameter estimation technique, the cubic stiffness coefficient and non-linear rotational cubic stiffness non-linearity were obtained for different modes, which were compared with the exact value, reflecting an error percentage less than 10%. The outcomes reveal that in spite of errors in computing the natural frequency, the calculation of the cubic stiffness coefficient remains very accurate, demonstrating the model’s robustness.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"71 ","pages":"Pages 248-255"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902552","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