Frattura ed Integrita Strutturale最新文献_第4页

An assessment of HDPE fillers and Fiber Wrapping on the strength of Reinforced Concrete HDPE填料和纤维包裹对钢筋混凝土强度的评价

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.16

B. Gudadappanavar, Dilip Kulkarni, Shivakumar Gouda

{"title":"An assessment of HDPE fillers and Fiber Wrapping on the strength of Reinforced Concrete","authors":"B. Gudadappanavar, Dilip Kulkarni, Shivakumar Gouda","doi":"10.3221/igf-esis.64.16","DOIUrl":"https://doi.org/10.3221/igf-esis.64.16","url":null,"abstract":"Fiber-reinforced polymer (FRP) is the most promising technique in the present era to bring sustainability, reliability, and pseudo ductility to concrete structures due to its superior properties. Thermoplastic and thermoset polymers are the most thrown-out synthetic waste that contributes to environmental pollution for a long time. Knowing this issue an attempt was made to use High-Density Polyethylene Fiber (HDPE) fillers of size 40x2 mm has been used in concrete. This investigation aims to estimate the integrity effect of HDPE fillers incorporation and wrapping of concrete with Basalt fiber mats (BFM) and Geo-textile fiber mats (GFM) on split tensile strength, shear strength, and impact resistance as per standards. Results indicate that the addition of an optimum quantity of HDPE has a significant effect on improving the tensile, shear, and impact strengths. Adding HDPE fillers in the range of 0.5 - 1.5% in concrete samples wrapped with Basalt and Geo-textile fiber mats showed an increased tensile strength of up to 14.06% and 7.40% respectively with that conventional concrete. Further, wrapping of concrete using Basalt fiber and geotextile fiber mats showed a 4.16% and 20% increase in shear strength for 0.5% HDPE-incorporated concrete samples. Higher impact resistance was also observed for HDPE-added and fiber-wrapped concrete samples.","PeriodicalId":38546,"journal":{"name":"Frattura ed Integrita Strutturale","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44224148","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

Free vibration analysis of the structural integrity on the porous functionally graded plates using a novel Quasi-3D hyperbolic high order shear deformation theory 基于准三维双曲高阶剪切变形理论的多孔功能梯度板结构完整性自由振动分析

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.18

M. hadj Meliani, Mohammed Amine Kenanda, F. Hammadi, Zakaria Belabed

引用次数: 2

Mechanical and Fracture Characterization of Epoxy/PLA/Graphene/SiO2 Composites 环氧树脂/PLA/石墨烯/SiO2复合材料的力学和断裂性能

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.15

K. Dileep, A. Srinath, N. Banapurmath, M. A. Umarfarooq, A. M. Sajjan

引用次数: 0

Optimization of S-N curve fitting based on neighborhood rough set reduction with improved firefly algorithm 基于改进firefly算法的邻域粗糙集约简的S-N曲线拟合优化

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.17

Yangjinyu Li, Li Zou, Zhengjie Zhu

引用次数: 0

The influence of notch connection location on the short-term behaviour of timber-concrete composite beams, modelling of TCC beams and research for optimal locations, a numerical study 缺口连接位置对木-混凝土组合梁短期性能的影响，TCC梁的建模和最佳位置的研究，数值研究

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.12

Hedmessaoud Zinelaabidine, Boudaoud Zeineddine, Ferhoune Noureddine

{"title":"The influence of notch connection location on the short-term behaviour of timber-concrete composite beams, modelling of TCC beams and research for optimal locations, a numerical study","authors":"Hedmessaoud Zinelaabidine, Boudaoud Zeineddine, Ferhoune Noureddine","doi":"10.3221/igf-esis.64.12","DOIUrl":"https://doi.org/10.3221/igf-esis.64.12","url":null,"abstract":"Timber-concrete composite beams, known as TCC beams, have been widely used in rehabilitation or in new buildings where several types of connections are commonly inserted to ensure partial composite action between the timber joist and the concrete slab. The notched connections represent an effective system due to their strength and ductility and it is simple to cut from timber joists. As a result, a small number is needed for the composite beam to achieve high performance in terms of bending stiffness and load-carrying capacity. This paper aims to develop a FE model for TCC beams with notched connections. It considers realistic interactions between different components. The developed FE model can satisfactorily predict the full range load-mid-span deflection curves and the failure mechanisms. The predictions agree very well with the experimental results reported in the literature, including the stiffness and the load-carrying capacity. After the validation, a numeric study was established, it aimed to research the optimal location of a notch connection between different proposed locations, to figure out which place must be installed to ensure high performance of the TCC beams. As a result of this study, the notch installed at location P3000 was found to be the optimal location to assure the highest bending stiffness. While the maximum carrying capacity was achieved at location P3750.","PeriodicalId":38546,"journal":{"name":"Frattura ed Integrita Strutturale","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47950813","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

Fracture analysis of defect Chlorinated Poly Vinyl Chloride pipes based on burst pressure and prediction their fraction of life 基于破裂压力的缺陷氯化聚氯乙烯管断裂分析及寿命预测

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.14

Fatima Gugouch, Achraf Wahid, Y. Bassir, M. Elghorba

{"title":"Fracture analysis of defect Chlorinated Poly Vinyl Chloride pipes based on burst pressure and prediction their fraction of life","authors":"Fatima Gugouch, Achraf Wahid, Y. Bassir, M. Elghorba","doi":"10.3221/igf-esis.64.14","DOIUrl":"https://doi.org/10.3221/igf-esis.64.14","url":null,"abstract":"Most Chlorinated Poly Vinyl Chloride (CPVC) resins contain 63-69 % chlorine, in particular those used for the extrusion of plumbing tubes, due to this chlorination of basic PVC, CPVC offers a mixture of corrosion resistance and low installation costs for its main applications requiring service in non-ambient conditions. CPVC replaces copper owing to its economic gain and by virtue of its pressure resistance characteristics. In this article, we have been interested in fracture analysis and damage modeling of CPVC tubes by subject CPVC samples to burst pressure tests. We performed a set of burst tests on virgin and artificially damaged CPVC pipe at different notch lengths, then submitted the specimens to burst pressure tests, in addition to recording the pressure and time during these tests for use in conducting the study. The results of the burst tests were exploited to estimate the damage and reliability of the material, these two parameters allow us to follow the degradation of the pipes used; subsequently, we determined a new relationship between these two parameters through the fraction life. This makes it possible to predict the moment of damage acceleration and to intervene at the right time for engaging predictive maintenance.","PeriodicalId":38546,"journal":{"name":"Frattura ed Integrita Strutturale","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42554464","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: 2

Evaluating the Safety and the Effect of Blast Loading on the Shotcrete together with lattice girder Support of Tunnels 爆破荷载对隧道喷射混凝土与格梁支护的安全性及影响评价

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.08

Farnoosh Basaligheh, Hamidreza Karimi Tabar, M. Nikkhah

引用次数: 1

Experimental and numerical investigations of the flexural behaviour ‎of Green - Ultra High Performance Fiber Reinforced Concrete ‎beams under repeated loads 重复荷载作用下绿色超高性能纤维混凝土梁弯曲性能的试验与数值研究

Frattura ed Integrita Strutturale Pub Date : 2023-03-21 DOI: 10.3221/igf-esis.64.10

Ayman Abdo Ayman Abdo, Ramadan Asker Ramadan Asker, Dina Atif sobhy, Sayed Ahmed Sayed Ahmed

{"title":"Experimental and numerical investigations of the flexural behaviour ‎of Green - Ultra High Performance Fiber Reinforced Concrete ‎beams under repeated loads","authors":"Ayman Abdo Ayman Abdo, Ramadan Asker Ramadan Asker, Dina Atif sobhy, Sayed Ahmed Sayed Ahmed","doi":"10.3221/igf-esis.64.10","DOIUrl":"https://doi.org/10.3221/igf-esis.64.10","url":null,"abstract":"There are various benefits to ultra-high-performance fiber-reinforced concrete ‎‎(UHPFRC). However, using a lot of cement in this type of concrete has a severe disadvantage since it causes pollution and several environmental concerns. Therefore, another type of concrete that achieves the same superior properties as UHPFRC while using less cement in the mixture should be considered. This research examined replacing cement with fly ash to produce environmentally friendly concrete called Green-UHPFRC. The impact of utilizing G-UHPFRC on the flexural behaviour of thirteen beams was investigated experimentally and numerically under repeated loads. The major parameters of the study were fly ash replacement ratios of 15%, 30%, and 45% and adding steel fiber to mixes with ratios of 1, 2, 3, and 4%. The tested beams were compared to the control beam in their backbone and hysteresis curves, failure load, crack propagation and failure modes, energy dissipation, stiffness degradation, and ductility index. From the results obtained, environmentally friendly concrete (G-UHPFRC) can be produced by replacing cement with fly ash up to 45% and adding 2% steel fiber without affecting the bending performance of beams made of G-UHPFRC compared to those made of UHPFRC.","PeriodicalId":38546,"journal":{"name":"Frattura ed Integrita Strutturale","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46507340","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: 1

Numerical analysis of isolated end-flattened steel bars under compression in space trusses 空间桁架中孤立端扁钢筋受压的数值分析

Frattura ed Integrita Strutturale Pub Date : 2022-12-21 DOI: 10.3221/igf-esis.63.21

Henrique de Araujo Rosa Cruz, Luciano Mendes Bezerra, Welington Vital da Silva, Ramon Silva

引用次数: 0

Mechanical, Wear, and Fracture Behavior of Titanium Diboride (TiB2) - Cerium Oxide (CeO2) Reinforced Al-6061 Hot-rolled Hybrid Composites 二硼化钛(TiB2) -氧化铈(CeO2)增强Al-6061热轧复合材料的力学、磨损和断裂行为

Frattura ed Integrita Strutturale Pub Date : 2022-12-21 DOI: 10.3221/igf-esis.63.22

S. R. Sreenivasa Iyengar, D. Sethuramu, M. Ravikumar

{"title":"Mechanical, Wear, and Fracture Behavior of Titanium Diboride (TiB2) - Cerium Oxide (CeO2) Reinforced Al-6061 Hot-rolled Hybrid Composites","authors":"S. R. Sreenivasa Iyengar, D. Sethuramu, M. Ravikumar","doi":"10.3221/igf-esis.63.22","DOIUrl":"https://doi.org/10.3221/igf-esis.63.22","url":null,"abstract":"Development of aluminium composites by stircasting technique is an effective method for fabrication of better quality of MMCs. Stircasting technique is one of the most commonly accepted techniques. In this research work, Al6061 / TiB2+CeO2 hybrid MMCs have been fabricated with varying wt. % of TiB2 (2.5%, 5%, 7.5% and 10%) particulates and constant 5% of CeO2 particulates. The monolithic alloy and hybrid composite were hot-rolled at a temperature of 515°C. Whereas, both the monolithic and hot-rolled hybrid composite was subjected to micro-structural study, hardness and tensile test. Optical microscope analysis revealed uniform dispersal of hard particles with in the base matrix in case of both of ascast and hot-rolled composites. Both ascast and hotrolled hybrid composites have shown extensive enhanced mechanical behavior and high wear resistance when compared with monolithic alloy. Though, ductility of the hybrid MMCs decreased with increasing TiB2 and CeO2 content. A tensile and wear fractography outcome shows the internal fractured structure of a tensile and wear specimen which was analysed using a SEM analysis.","PeriodicalId":38546,"journal":{"name":"Frattura ed Integrita Strutturale","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43236520","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: 2