Materials Science Forum最新文献_第7页

Analyzing the Sound of Materials: Application of Acoustic Emission Technique for Monitoring Material Behavior 分析材料的声音：应用声发射技术监测材料行为

Materials Science Forum Pub Date : 2024-03-22 DOI: 10.4028/p-hk3qly

C. R. Ríos-Soberanis, Takenobu Sakai, S. Wakayama

{"title":"Analyzing the Sound of Materials: Application of Acoustic Emission Technique for Monitoring Material Behavior","authors":"C. R. Ríos-Soberanis, Takenobu Sakai, S. Wakayama","doi":"10.4028/p-hk3qly","DOIUrl":"https://doi.org/10.4028/p-hk3qly","url":null,"abstract":"During the last years, some concerns have arisen in relation to the outcome of mechanisms of failure in composite materials according to its mechanical behavior. Such interest resulted in the development of new complex structures in order to enhance its mechanical resistance and the controlling of damage processes. Nevertheless, it is imperative to understand the degree of mechanical performance that these materials can achieve when under external stresses. In this regard, applying Acoustic Emission (AE) technique is widely known as a very effective technology for identifying and monitoring damage progression on different kind of materials and structures providing valuable information. AE is a non-destructive technique (NDT) capable of detecting micro damage initiation and propagation along several types of failure modes such as reinforcement/matrix interfacial debonding, matrix cracking, delamination, fracture, etc. This paper examines applications of AE regarding to composite materials where fracture processes are generally more complex and data interpretation is correspondingly more difficult. Finally, in order to continuously improve the reliability of this technique, several researches have advanced its trustworthiness through innovations in AE technology. Some perspectives are discussed.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140212790","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

Materials and Technologies of Textile Production 纺织品生产材料与技术

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/b-dh044z

Li Jing Wang

引用次数: 0

Development of a Process to Continuously Mercerise Loose-Stock Cotton 开发连续丝光棉加工工艺

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-ph2mr9

Lyndon Arnold, R. Padhye

{"title":"Development of a Process to Continuously Mercerise Loose-Stock Cotton","authors":"Lyndon Arnold, R. Padhye","doi":"10.4028/p-ph2mr9","DOIUrl":"https://doi.org/10.4028/p-ph2mr9","url":null,"abstract":"Cotton has traditionally been mercerised as hanks of yarn or as open-width fabrics, but commercial methods to mercerise loose stock directly after ginning have been limited. Arnold and Rippon [1,2] produced continuous lengths of fully mercerised sliver with increased fibre strength, enhanced dye-uptake, improved surface lustre, without fibre shrinkage. Not only did the method prevent shrinkage, but fibres could be stretched by as much as 4% and then stably set. The disadvantage of this method was that fibre had to be fully processed to sliver form.An improved prototype machine has now been successfully developed to continuously mercerise ginned loose stock. Testing has confirmed that the output fibres are mercerised along their full lengths and have higher tenacity compared with the un-mercerised Control. Fibre lengths have also been maintained, indicating that the shrinkage normally caused by slack mercerising has been prevented. Fibre dyeability is comparable with that of slack-mercerised samples but better than the un-mercerised Control. The improved lustre expected for fibre mercerised under tension has also been confirmed. The production rate of the process can be readily improved, and the prototype expanded in size to increase output.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":"59 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230547","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

Ag Doping and rGO Coupling of TiO2 within Polysiloxane Matrix for the Ecofriendly Development of High-Performance Cotton Fabric 聚硅氧烷基质中二氧化钛的银掺杂和 rGO 耦合用于高性能棉织物的生态友好开发

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-r24xao

Mohammad Mamunur Rashid, M. Zorc, B. Simončič, Ivan Jerman, B. Tomšič

引用次数: 0

Computational Evaluation of Weaving Process on Mechanical Stiffness of Plain Weave Fabric 织造工艺对平纹织物机械刚度的计算评估

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-7qdn38

Yue Zhang, Hikaru Miyaki, Jianliang Zhang, Atsushi Sakuma

{"title":"Computational Evaluation of Weaving Process on Mechanical Stiffness of Plain Weave Fabric","authors":"Yue Zhang, Hikaru Miyaki, Jianliang Zhang, Atsushi Sakuma","doi":"10.4028/p-7qdn38","DOIUrl":"https://doi.org/10.4028/p-7qdn38","url":null,"abstract":"Inherent structural stress in a plain weave is induced during the formation process of fabrics, and its evaluation is useful for estimating the mechanical stiffness of weaves. In this study, the effect of inherent stress distributed in a weave fabric was investigated to estimate its mechanical stiffness. Here, a numerical simulation method that imitates the fabrication process of fabrics is proposed to evaluate stiffness. A diagram illustrating the weaving process is defined in this evaluation method. For computational analysis, a unit cell model used in homogenization was developed based on the structural periodicity of the plain weave structure using the finite element method. The weaving state was accomplished by simulating the weaving behavior in this model. The weaving state included the geometric shape and stress/strain data. Subsequently, a model was built to estimate the mechanical stiffness based on the weaving state data. Finally, a uniaxial tensile simulation was conducted using the numerical model. Using this evaluation method, the effect of inherent stress on the mechanical stiffness of weaves was quantified, which indicated that the tensile stiffness improved in a small strain range. The effect gradually decreased as the tension progressed.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":"14 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228618","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

Novel Knit Structure with Adjustable Tensile Behaviour Based on Combined Weft/Warp Technology 基于纬纱/经纱组合技术的拉伸性能可调的新型针织结构

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-pzvte0

Sven Hellmann, Carmen Sachse, E. Häntzsche, C. Cherif

引用次数: 0

Silica-Containing Phosphorus-Based Sol-Gel Finishing to Improve Flame Retardant Performance of Cotton Fabrics 含硅的磷基溶胶-凝胶整理改善棉织物的阻燃性能

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-usqr8l

V. Trovato, Giuseppina Iacono, G. Malucelli, G. Rosace

{"title":"Silica-Containing Phosphorus-Based Sol-Gel Finishing to Improve Flame Retardant Performance of Cotton Fabrics","authors":"V. Trovato, Giuseppina Iacono, G. Malucelli, G. Rosace","doi":"10.4028/p-usqr8l","DOIUrl":"https://doi.org/10.4028/p-usqr8l","url":null,"abstract":"In this paper, the sol-gel technique was used to design hybrid phosphorus-doped silica structures for improving the thermal stability and flame retardancy of cotton fabrics. To this aim, diethylphosphatoethyltriethoxysilane (DPTS) was employed as phosphate alkoxysilane in a multistep procedure that involved multiple layers (from 1 to 6) depositions. The multi-layer coatings were applied by padding using sols containing appropriate molar ratios of the precursor, anhydrous ethanol, catalyst, and hydrochloric acid. Moreover, the synergism P-N on flame retardancy of cotton was assessed by introducing 3-aminopropyltriethoxysilane (APTES) as an N-donor precursor in DPTS sols. The effects of the catalyst during the alkoxide reaction and the silica amount applied by sol-gel treatment on the thermo-oxidative behavior of the treated fabrics were deeply studied. The creation of the silica skeleton on the cotton surface and the interactions between the cellulosic fibres and the doped layer were investigated using FT-IR ATR spectroscopy. Moreover, thermal and thermo-oxidative stability, flammability properties, and combustion behavior of the sol-gel treated cotton fabrics were also studied, proving the effectiveness of the sol-gel coating in the fire protection of the cellulosic substrate.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228738","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

Micromechanical Modelling of the Deformation Mechanisms Friction-Spun Yarn from Recycled Carbon Fibres 再生碳纤维摩擦纺纱变形机理的微观力学建模

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-atiih0

Tobias Georg Lang, Mmb Hasan, A. Abdkader, C. Cherif, T. Gereke

{"title":"Micromechanical Modelling of the Deformation Mechanisms Friction-Spun Yarn from Recycled Carbon Fibres","authors":"Tobias Georg Lang, Mmb Hasan, A. Abdkader, C. Cherif, T. Gereke","doi":"10.4028/p-atiih0","DOIUrl":"https://doi.org/10.4028/p-atiih0","url":null,"abstract":"The growing use of carbon fibre-reinforced polymers (CFRP) results in an increased amount of CF waste from offcuts or end-of-life components. A promising method to reuse the waste fibre materials in a structural component with excellent mechanical properties is the processing of recycled CF (rCF) and thermoplastic fibres into hybrid yarns. Spinning of friction spun yarns consisting of more than 90% rCF and containing almost no thermoplastic fibres that are suitable for thermoset composites, currently leads to high fibre damage and low yarn quality and is, therefore, addressed in this project. The technology is reported in another paper. One of the limiting factors for drapability of textiles is the stretchability of continuous fibres and draping of the semi-finished textile products for complex geometries is still error-prone. Friction spun yarns exhibit significantly higher yarn elongations due to sliding mechanisms between the fibres. The deformation properties of friction spun yarns are significantly influenced by fibre-fibre interactions and depend on a variety of process and material parameters. In the following, micromechanical finite element models of the spun yarns are created by using beam elements. Monte Carlo method is used to model local variabilities in the yarns. The models are then used to simulate yarn behaviour under deformation and to investigate the influence of various process parameters.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":"59 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230298","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

Analysis of the Influence of Fiber Orientations in Carbon Fiber Reinforced Composites on their Structural Properties Based on Eddy Current Measurements 基于涡流测量的碳纤维增强复合材料中纤维方向对其结构特性的影响分析

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-euwyi2

Johannes Mersch, T. Gereke, A. Nocke, C. Cherif

{"title":"Analysis of the Influence of Fiber Orientations in Carbon Fiber Reinforced Composites on their Structural Properties Based on Eddy Current Measurements","authors":"Johannes Mersch, T. Gereke, A. Nocke, C. Cherif","doi":"10.4028/p-euwyi2","DOIUrl":"https://doi.org/10.4028/p-euwyi2","url":null,"abstract":"Fiber-reinforced plastics (FRP) are a type of composite material consisting of a reinforcing structure and a plastic matrix. When compared to traditional construction materials, FRP has higher strength and stiffness due to the high mechanical properties of reinforcing fibers such as carbon or glass. However, the properties of FRP are dependent on the alignment of fibers within the composite, with deviations leading to reduced strength and stiffness. Eddy current testing is a non-destructive technique used to visualize carbon fibers in the composite and assess the impact of local fiber orientation on the structural properties of FRP. This study aims to understand the influence of local fiber orientation on tensile strength and elastic modulus by producing composites with defined fiber orientations, analyzing them with eddy current testing, and assessing their mechanical properties through tensile tests. The measured fiber orientations are then used to validate a finite element model, in which the actual, measured fiber orientation is applied to the simulation and correlated with the mechanical properties. In contrast to previous published studies measured fiber orientation is used, which as shown in this work, differs from the theoretically implemented fiber orientation.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":"19 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140229106","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 Nanoporous Poly(Lactic Acid) Microfibers Using a Simplified Centrifugal Spinning Method 用简化离心纺丝法表征纳米多孔聚（乳酸）微纤维

Materials Science Forum Pub Date : 2024-03-19 DOI: 10.4028/p-fho6e7

Kazushi Yamada, C. Narita

引用次数: 0