Procedia Structural Integrity最新文献_第4页

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

Effect of Process Parameters on Final Geometry and Quality in Hot Tube Spinning Process 热管纺丝工艺参数对最终几何形状和质量的影响

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.111

Gunes Murat , Erdem Nagihan , Yigit Mehmet

引用次数: 0

Comparison of the stiffnesses of three types of porous structures 三种多孔结构的刚度比较

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.101

Katarina Monkova , Peter Pavol Monka , Željko Božić , Iva Rački

引用次数: 0

Production of aluminum cellular solids, mechanical characterization through compression tests and correlation with image analysis 铝蜂窝固体的生产，通过压缩测试和相关图像分析的力学特性

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.068

A. Ceci , G. Costanza , C. Iandiorio , E. Marotta , P. Salvini , M.E. Tata

引用次数: 0

Stress ratio effect on the functional behavior of the pseudoelastic SMA 应力比对伪弹性SMA功能行为的影响

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.073

N. Bykiv , S. Yankovyi , V. Iasnii

引用次数: 0

Effect of microstructure on creep mechanical behavior and damage mechanisms of AISI 316L (N) austenitic stainless steels 组织对AISI 316L (N)奥氏体不锈钢蠕变力学行为及损伤机制的影响

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.057

Marwa Ben Bettaieb , Alexandra Renault-Laborne , Sylvain Depinoy , Ludovic Vincent , Thilo F. Morgeneyer

{"title":"Effect of microstructure on creep mechanical behavior and damage mechanisms of AISI 316L (N) austenitic stainless steels","authors":"Marwa Ben Bettaieb , Alexandra Renault-Laborne , Sylvain Depinoy , Ludovic Vincent , Thilo F. Morgeneyer","doi":"10.1016/j.prostr.2025.06.057","DOIUrl":"10.1016/j.prostr.2025.06.057","url":null,"abstract":"<div><div>The designation AISI 316L (N) regroups different materials that, depending on slight modifications of their chemical composition or on their manufacturing route, may develop different creep mechanical behavior and damage mechanisms. In this article, two AISI 316L (N) alloys are compared: a rolled plate and a niobium (Nb) rich hot forged thick plate. Both materials are submitted to the same creep conditions, 575 °C and 310 MPa. Due to a lower yield stress, the tensile strain at the end of the loading phase is higher for the Nb-rich alloy than for the rolled material. On the contrary, the subsequent creep strain rate and creep ductility are significantly lower for the Nb containing steel. The creep lifetime of the Nb-rich material is far longer than the one of the rolled Nb-free plate. Multiple internal crack initiations occur preferentially at the grain boundaries for both materials, but crack propagation eventually becomes mostly transgranular in the highly deformed rolled plate material while staying intergranular in the Nb-containing thick plate. Niobium carbonitrides and subgrain boundaries are revealed at the as-received state of the Nb-rich alloy. After this creep test, microstructural evolutions are only noticed in the Nb-free alloy.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 297-302"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580717","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

Interlaminar fracture properties of flax fibre biobased composites interleaved with PPS veils 亚麻纤维生物基复合材料与PPS复合材料的层间断裂性能

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.039

Robert Lowe , Vishnu Prasad , Neal Murphy , Alojz Ivankovic

{"title":"Interlaminar fracture properties of flax fibre biobased composites interleaved with PPS veils","authors":"Robert Lowe , Vishnu Prasad , Neal Murphy , Alojz Ivankovic","doi":"10.1016/j.prostr.2025.06.039","DOIUrl":"10.1016/j.prostr.2025.06.039","url":null,"abstract":"<div><div>With growing environmental awareness and stringent government regulation, interest in environmentally friendly and recyclable composite materials has increased. Thus, the use of natural fibre-reinforced composites in mechanical and structural applications increased due to their economic and environmental benefits. Improving the interaction between the hydrophilic natural fibre and the hydrophobic matrix is critical to enhancing the mechanical properties and the interlaminar fracture behaviour. Common techniques include fibre surface treatments or the introduction of secondary reinforcements. However, these techniques are often time-consuming and energy-intensive. This project investigates the use of polyphenylene sulphide (PPS) veils, interleaved on a flax fibre bio-resin composite to investigate the interlaminar fracture properties. This avoids complexity and extra energy consumption. The PPS veils are placed at the mid-layer during the composite fabrication. Composites with PPS veils of areal densities of 5 g/m<sup>2</sup>, 10 g/m<sup>2</sup>, and 20 g/m<sup>2</sup> were fabricated using vacuum-assisted resin infusion and compared with the composite without the PPS veils. The Mode I interlaminar fracture toughness increased by 35%, 43%, and 60% respectively with the addition of veils at 5, 10 and 20 g/m<sup>2</sup>. This is attributed to the fibre bridging by the PPS fibres, which consume more energy for delamination. Mode II fracture toughness improved by 1%, 9%, and 13% for respective areal density. The flexural properties were also improved. The flexural strength showed a slight increase in the values by 10 %, 6 % and 15%, whereas the flexural modulus increased by 17%, 13% and 22% respectively with the addition of PPS veils.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 173-183"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580815","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