Procedia Structural Integrity最新文献_第2页

Bending Splitting-Frequency Index (BSFI) a Nonlinear Method & Damage Characterization for 1-D Vibration-based SHM 弯曲劈裂-频率指数（BSFI）：一维振动SHM的非线性方法及损伤表征

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.060

Gomez-Mancilla Julio C.

{"title":"Bending Splitting-Frequency Index (BSFI) a Nonlinear Method & Damage Characterization for 1-D Vibration-based SHM","authors":"Gomez-Mancilla Julio C.","doi":"10.1016/j.prostr.2025.06.060","DOIUrl":"10.1016/j.prostr.2025.06.060","url":null,"abstract":"<div><div>Today, industrial safety requires SHM, NDT, and CM to minimize risks and maintain safety standards at a competitive cost. Here, monitored modal response is the method’s backbone. Fracture mechanics and J-Integral concepts in a FEM program model an open crack beam where modal-damage indexes extract the problem symptoms. Six innovative Mode Damage Indexes (MDI) in circular 1-D cracked beams focus on the bending frequency split. <em>Bending Splitting-Frequency Indexes (BSFI<sub>j</sub>)</em> are imprinted by damage: cracks, pseudo-cracks, PSB, and structural weakening; BSFI peaks indicate dangerous modes. The damage model is validated <em>vs.</em> literature limit to plane ξ-x; ɳ-x split frequencies are added. Solving Eigenproblems, a Piecewise Linear PWL approximation allows a nonlinear analysis. Using Δω0j and {SDI_<sub>t</sub>} > 0 criteria, notches, imperfections, and unsymmetric pristine beams allow onset damage detection. An inverse algorithm calculates <em>BSFI_<sub>n</sub></em> maps at <em>p-</em>assumed crack locations; a test-<em>BSFI_<sub>t</sub></em> vector minimizes discrepancies. A flow diagram explains the method, damage detection, characterization, location, and severity. Tables, plots, and statistical parameters for four cracked cases, and onset damage detection in VHCF validate this work.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 318-324"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580720","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

Molecular dynamic simulation of the temperature effect on strength of carbyne-graphene nanoelements 温度对碳烯纳米元件强度影响的分子动力学模拟

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.021

Kotrechko Sergiy , Ovsjannikov Olexander , Barvinko Mykhailo , Stetsenko Nataliya

{"title":"Molecular dynamic simulation of the temperature effect on strength of carbyne-graphene nanoelements","authors":"Kotrechko Sergiy , Ovsjannikov Olexander , Barvinko Mykhailo , Stetsenko Nataliya","doi":"10.1016/j.prostr.2025.06.021","DOIUrl":"10.1016/j.prostr.2025.06.021","url":null,"abstract":"<div><div>The results of study of the temperature effect on strength of carbyne-graphene nanoelement (CGN) over a wide temperature range using the molecular dynamics technique are presented. The investigated CGN consisted of two graphene sheets connected by a ten-atom carbyne chain. It was ascertained that at temperatures lower than 1000 K, the average value of CGN strength decreases monotonically with increasing temperature according to a nearly linear dependence, and is accompanied by a scatter of strength values. This scatter increases as the temperature grows. It is shown that these regularities are due to the fluctuation-induced mechanism of the contact bonds breaking in carbene-graphene nanoelement. For the first time, it was found the phenomenon of transition from the instability of carbyne-graphene nanoelements due to the contact bond breaking to the instability, as a result of the fluctuation-induced formation of a Stone-Wales-like defect with the subsequent pulling out of the chain from the graphene sheet. This phenomenon is observed at temperatures higher than 1000 K. The obtained results may be used both for substantiating the working temperatures of CGN-based straintronics, and in the technologies of carbyne chains production.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 47-52"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580766","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

On analytical model of interface crack in bonding quasi-brittle material between distinct elastic media 不同弹性介质粘结准脆性材料界面裂纹的解析模型

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.022

M. Dudyk , A. Kaminsky , Yu. Reshitnyk , Yu. Chornoivan

引用次数: 0

Analysis of Cavitation in Human Iliac Arterial Tissue 人髂动脉组织空化分析

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.043

Jaynandan Kumar , Anshul Faye

引用次数: 0

Development of a new technological scheme to produce NiTi seamless tubes 开发一种生产镍钛无缝管的新工艺方案

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.005

Roman Karelin , Victor Kimarov , Vladimir Cherkasov , Vladimir Andreev , Vladimir Yusupov

引用次数: 0

Constructing solutions using cement-based materials for energy harvesting and storage 利用水泥基材料构建能量收集和储存的解决方案

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.004

Jorge S. Dolado

{"title":"Constructing solutions using cement-based materials for energy harvesting and storage","authors":"Jorge S. Dolado","doi":"10.1016/j.prostr.2025.06.004","DOIUrl":"10.1016/j.prostr.2025.06.004","url":null,"abstract":"<div><div>Concrete and cement-based materials are among the most widely used materials on Earth, second only to water. These versatile materials have shaped the modern landscape, from towering skyscrapers to highways and bridges. While their primary use has been structural, recent advancements have shown that their widespread presence can also be leveraged for energy conversion and storage. In recent years, various construction methods have been developed that use cementitious composites for energy solutions, such as rechargeable concrete batteries, cementitious thermal energy storage (TES) devices for concentrated solar plants, thermoelectrical concretes and the emergence of radiative cooling concretes. This work aims at reviewing these novel applications. In particular, I will initially explore how rechargeable concrete batteries could offer a sustainable and cost-effective solution for storing energy in buildings and infrastructure. Later I will move on presenting new cement binders whose resistance to high temperature cycles fits well with the stringent requirements of the TES devices in modern concentrated solar plants. The challenges of thermoelectric concretes will be discussed afterwards. Finally, the paper will spend some time on the recent advent of radiative cooling concretes and how they could help reduce energy consumption and mitigate the urban heat island effect in cities. Overall, this work aims to emphasize that if properly engineered, cement-based materials have the potential to revolutionize the way we think about energy storage and conversion in the built environment</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"67 ","pages":"Pages 23-29"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572448","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

Orthotropic Mechanical Behavior of 3D Printed Ceramics: Experimental Analysis and Testing 3D打印陶瓷的正交各向异性力学行为：实验分析与测试

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.104

A. Jiménez , B. Hortigón , E. Vázquez , C. Rivera , C. Galán

{"title":"Orthotropic Mechanical Behavior of 3D Printed Ceramics: Experimental Analysis and Testing","authors":"A. Jiménez , B. Hortigón , E. Vázquez , C. Rivera , C. Galán","doi":"10.1016/j.prostr.2025.06.104","DOIUrl":"10.1016/j.prostr.2025.06.104","url":null,"abstract":"<div><div>3D printing with clay using Liquid Deposition Modelling has garnered significant attention, particularly in the construction industry, for fabricating ceramic and non-sintered elements. While previous studies have investigated the mechanical properties of 3D-printed ceramics, a comprehensive characterization of this material as a composite-like structure exhibiting orthotropic behavior, induced by the printing process, is still lacking. Such characterization is essential for developing finite element models to simulate the behavior of complex surfaces printed with parallel traces.</div><div>To address this gap, clay specimens were 3D-printed with varying trace orientations, sintered at 980°C, and tested for flexural and compressive strength in the X, Y, and Z directions using three-point bending and compression tests. Ultrasonic testing was also conducted to evaluate its potential for determining mechanical properties and structural integrity. This study provides foundational insights into the mechanical behavior of 3D-printed ceramics, paving the way for further advancements in their applications.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 603-609"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580330","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 Two-parameter Fracture Criterion with Two-dimensional Crack Tip Front Constraint 二维裂纹尖端前沿约束的双参数断裂准则

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.109

Yu.G. Matvienko , A.M. Pokrovskii

引用次数: 0

Improvement In Fatigue Properties Of Welded Joints Using Crack Initiation Resistant Steel Part 1: Fatigue Strength Of Weld Heat Affected Zone And Cruciform Fillet Welded Joints 抗裂钢焊接接头疲劳性能的改善。第1部分：焊缝热影响区和十字形角焊接头的疲劳强度

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.076

Takanori Ito , Yasuhito Takashima , Masao Kinefuchi

引用次数: 0

Regularities of fatigue crack initiation and growth in two-phases titanium alloy after beach mark formation under VHCF regime VHCF条件下两相钛合金滩痕形成后疲劳裂纹萌生与扩展规律

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.06.081

Shanyavskiy A. , Nikitin A. , Nikitin I.

引用次数: 0