Journal of Reinforced Plastics and Composites最新文献

{"title":"Enhanced performance of recycled polyethylene-integrated trilayer low-density polyethylene/linear low-density polyethylene heat-shrink films for brick packaging: A comprehensive study","authors":"Hamza Daoudi, Fatima-Zahra Semlali, Zineb Kassab, El-Houssaine Ablouh, Mohammed Sadek, Mounir EL Achaby","doi":"10.1177/07316844241272979","DOIUrl":"https://doi.org/10.1177/07316844241272979","url":null,"abstract":"Recycling is a waste-management method, but it may also be considered as one modern example of putting the notion of industrial ecology into practice, whereas in a natural ecosystem, waste is absent and only products are occurring. Therefore, this study engaged within the identical framework which concerns investigating recycled plastic granulates that came from non-compliant polyethylene (PE) products as industrial waste and their reinsertion into the production lines of a trilayered heat shrink film. Firstly, the investigation started with the attribution of 2 types of recycled polyethylene (RPE<jats:sub>1</jats:sub> and RPE<jats:sub>2</jats:sub>) then each type of these granulates was added to the trilayered film’s core layer. Whereby the preparation of two witness samples and targeting four weight charges of RPE substitution (10, 30, 50, and 70 wt%), respectively, for RPE<jats:sub>1</jats:sub> and RPE<jats:sub>2</jats:sub>. The as-produced specimens were then examined for their behaviour during the blow film extrusion process. Dynamomechanical properties, such as Young’s modulus at machine direction (MD), were improved significantly from 173 MPa to 200 MPa by adding 50 wt% of RPE to the core layer correlated with increased shrinkability from 74 to 80%, as well as the colour appearance of the finished product has been evaluated. Nonetheless, these samples have been exposed to accelerated weathering and re-evaluated mechanically. It was found that the coupling between the RPE and virgin PE has resulted in an accelerated degradation effect on the dynamomechanical of the aged trilayered film.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"8 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parameter optimization of automated fiber placement based on CCD response surface method","authors":"Tianyao Lu, Junli Li, Yilian Zhang, Gang Liu, Bo Qian, Liqiang Zhang, Jian Mao","doi":"10.1177/07316844241274274","DOIUrl":"https://doi.org/10.1177/07316844241274274","url":null,"abstract":"Defects in the automatic fiber placement (AFP) directly affect the prepreg bonding strength, resulting in a less strong product than expected. Improper process parameter selection is one of the major factors contributing to layup defects. However, there is a significant degree of uncertainty associated with the parameters that affect the lay-up quality and currently few studies that use response surfaces to consider the interaction of these parameters. In general, it is necessary to obtain a more accurate combination of process parameters through experiment, which is time-consuming and consumable. Moreover, it is difficult to investigate the interrelation between process parameters. Therefore, this paper presents a method of placement parameter optimization based on lap shear strength (LSS) to achieve high-quality and high-strength AFP process control. Firstly, this article establishes a comprehensive quality evaluation system by analyzing the causes of defects in AFP process. Secondly, the central composite design of experiments (CCD) response surface methodology was used to effectively optimize the process parameters and to understand the interactions between the various factors. A prediction model with quadratic polynomial regression equations for four process parameters and laydown quality was developed. Based on the regression equations, the process parameters with optimal lay-up quality were obtained. Then, using 30 sets of process parameters from the response surface experiment, lap samples were made for tensile testing. The lap shear strength of tows under various process conditions was studied, and the experimental results were consistent with the response surface analysis results. Finally, by analyzing the quality evaluation curve and load-time curve, it was found that the trend of AFP quality evaluation score and LSS was practically the same. Data analysis shows that placement using optimized parameters corresponding to higher scoring samples has higher lap shear strength and fewer defects than placement of samples with low quality scores. Therefore, the quality evaluation system of lay-up quality proposed in this paper is an effective and reliable method for optimizing the parameters of AFP process.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"76 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic load characteristics and performance degradation of CFRP wing-body connection lugs under elevated temperature wet conditions","authors":"Di Gai, Shengjie Yu, Hai Xu, Kang Yang, Zhipeng Yao, Shiyu Yang, Zheng Zhao","doi":"10.1177/07316844241275159","DOIUrl":"https://doi.org/10.1177/07316844241275159","url":null,"abstract":"The elevated temperature wet (ETW) conditions have a significant impact on the mechanical properties of the CFRP main load-bearing components in all-carbon fiber aircraft, thereby influencing the aircraft’s service life. This paper utilizes a full-scale CFRP wing-body connection structure to study its static load characteristics under elevated temperature wet conditions and its fatigue performance under flight loads. Under ETW conditions (71°C, 85% RH) for 35 days, the average moisture content reached 0.5707%. Structural stiffness decreased by 49.67% under static load in ETW conditions, with displacement exhibiting a two-stage behavior in both environments. During the full load spectrum test, the stiffness degradation rate under ETW conditions increased by 47.3%. In the constant peak load test, structural stiffness exhibited three stages: initial enhancement-gradual reduction-rapid reduction following local damage. Numerical calculations identified the fillet transition and opening positions as weak points. The fatigue safety factor based on strength criteria significantly decreased under high-temperature and humid conditions, showing an inverse relationship with the load value.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"129 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis and structural evaluation of seawater-aged composite tidal turbine blades using multi-walled carbon nanotubes and acoustic emission","authors":"Eduardo José-Trujillo, Carlos Rubio-González, Julio A. Rodríguez-González","doi":"10.1177/07316844241274608","DOIUrl":"https://doi.org/10.1177/07316844241274608","url":null,"abstract":"The main objective of this research was to evaluate the piezoresistive response and mechanical performance of seawater-aged blades manufactured with glass fiber/epoxy resin incorporating multi-walled carbon nanotubes (MWCNTs). MWCNTs content was 0.75 wt. %, which was sufficient to form an electric percolation network. MWCNTs were dispersed in the fiber using the spray-coating method, allowing the entire blade outer surface to gain strain self-sensing capability. Exposure of the blades with and without MWCNT to seawater caused a moisture absorption of 1.67% and 1.56%, respectively. This caused damage such as matrix cracking, and fiber/matrix interfacial debonding. These effects were manifested by an increase in tip displacement of 13% and 1.43% in the blades with and without MWCNTs, also local deformations on the blade increased. The MWCNTs induced a positive effect on piezoresistive capability, resulting in the development of sensitivity to deformation. This showed that MWCNTs in the specified content is efficient for damage detection in complex structural components even after seawater aging while retaining maximum electrical resistance change of 0.45% and 0.26% on the tensile and compressive side, respectively. With acoustic emission (AE), it was confirmed that the presence of MWCNTs acts as toughening mechanisms reducing damage such as micro-cracks in the matrix.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"106 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance thermoplastic nanocomposites for aerospace applications: A review of synthesis, production, and analysis","authors":"Sukran Guney Yilmaz, Erdem Ferik, Selahattin Berat Birak, Merve Ozkutlu Demirel, Yahya Oz, Cihan Kaboglu","doi":"10.1177/07316844241272035","DOIUrl":"https://doi.org/10.1177/07316844241272035","url":null,"abstract":"Thermoset polymers are cured under natural or synthetic created conditions and retain their solid form when exposed to heat. Unlike thermosets, thermoplastics melt when exposed to heat after production. Thermoplastics are preferred as raw materials because they can be easily shaped after production, have a high shelf life and are recyclable. In this regard, the prominence of high-performance engineering polymers in recent years has led to the preference of alternative polymers to thermosets. High-performance engineering thermoplastics include thermoplastics such as polyphenylene-sulfide (PPS), polyether-ether-ketone (PEEK), polyether-ketone-ketone (PEKK), polyphenylene-ether, polysulfone,polyoxadiazole, polyimide, polyether-amide, polyether-amide-imide, polynaphthalene, and polyamide-imide. These polymers exhibit application potential in aerospace, defense, automotive, marine, energy, and medical sectors. In challenging conditions such as high pressure, temperature, and corrosive environments, they possess high service temperatures, enhanced mechanical and physical properties, preferable chemical resistance as well as out-of-autoclave and rapid processing properties. In this review article, nanomaterial production methods (bottom-up and top-bottom) are mentioned. In the following sections, PPS, PEEK, and PEKK thermoplastics are explained, and carbon- and boron-based nano additives used in constructing nanocomposites are investigated. In the last section, PPS, PEKK, and PEEK polymer nanocomposites are investigated.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"12 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of fiber surface treatments and hybridization on interply and intraply Kevlar reinforced polymer composites","authors":"Nallamuthu Ramasamy, Vellayaraj Arumugam, Srinivasan Sambath, Thirugnanasambandam Arunkumar, Muniyandi Prakash","doi":"10.1177/07316844241274585","DOIUrl":"https://doi.org/10.1177/07316844241274585","url":null,"abstract":"The research study has focused on the influence of Kevlar fiber surface positions of fibers. The phosphoric acid (PA) pretreated epichlorohydrin (ECH) treatment was used for surface modification of Kevlar fiber. Flexural after indentation (FAI) evaluations were carried out on inter-intraply treated and untreated Kevlar hybrid composites. The surface characterizations of treated and untreated Kevlar samples were investigated by X-ray photoelectron spectroscopy (XPS), XRD, and FESEM analysis. The results revealed that the load-bearing capacity and flexural strength of intraply hybrid composites increased by 45.1% and 36.5%, respectively, compared to interply hybrid composites. Also, the indentation strength of the treated Kevlar intraply hybrid composites was 26.4% higher than that of the untreated intraply hybrid composites. Further, it was analyzed by damage progression and fractography analysis by field emission scanning electron microscopy.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"11 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomass-derived epoxy resin and its application for high-performance natural fiber composites","authors":"Bijender Kumar, Samia Adil, Jaehwan Kim","doi":"10.1177/07316844241275225","DOIUrl":"https://doi.org/10.1177/07316844241275225","url":null,"abstract":"The development of bio-based materials with superior comprehensive properties from biomass resources remains a significant challenge, providing an alternative to conventional petroleum-based materials. This study explores the lignin-derived vanillyl alcohol epoxy (VAE) resin-containing mono and di (m&amp;d) epoxy structure as an adhesive to develop environment-friendly natural fiber-reinforced composites to reduce the carbon footprint. The synthesized m&amp;dVAE containing mono and di-epoxidized (m&amp;d) aromatic rings, when cured with 4, 4´-diaminodiphenyl methane (DDM) hardener, exhibits higher record tensile strength ∼124.0 ± 8.43 MPa and tensile modulus ∼2.88 ± 0.35 GPa compared to a commercial petroleum-based epoxy, diglycidyl ether bisphenol A (DGEBA) thermoset. Additionally, it demonstrated higher adhesion shear strength (∼19.16 ± 0.58 MPa) with cellulose nanofibers film than DGEBA. Moreover, fabricated green composite possesses excellent flexural strength of ∼203.72 ± 2.08 MPa and stiffness of ∼11.58 ± 0.38 GPa than the petroleum-based thermoset composite. The composite’s fracture surface morphology shows that the resin and fibers have good interfacial adhesion. Notably, the sustainable composite showed good hydrophobicity and an excellent heat-resistant index of 144.4°C. The m&amp;dVAE resin can be an alternative to petroleum-based resins as an adhesive, and its environment-friendly sustainable composite could be a promising candidate to replace synthetic materials for high-performance structural applications.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"54 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and properties study of straw fiber cement-based composite boards with efficient formaldehyde purification function","authors":"Liguang Xiao, Tan Lei, Yiming Wang, Zhenqiang Duan, Mei Gao, Dawei Jiang","doi":"10.1177/07316844241274293","DOIUrl":"https://doi.org/10.1177/07316844241274293","url":null,"abstract":"The study prepared reed and corn straw fiber cement-based composite boards (RSAB and CSAB) using alkali slag-fly ash cement as the matrix material and straw fiber (reed or corn) as the reinforcing material through a combination of hot and cold pressing methods. The effects of different hot-pressing temperatures and varying straw fiber contents on the mechanical properties and water resistance of the boards were studied. The results showed that both boards exhibited excellent mechanical strength, low water absorption, and minimal thickness expansion when the hot-pressing temperature was 120°C and the straw fiber content was 8%. The high-temperature hot-pressing process endowed the composite boards with outstanding advantages of high early strength and fast molding speed. The incorporation of straw fiber further improved the crack resistance and dimensional stability of the boards. The true differences in the physical and mechanical property indicators of the two boards were assessed using statistical analysis. The micro-morphology and chemical composition of the two types of boards were analyzed using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) techniques. Additionally, the visible light-responsive photocatalytic material SiO<jats:sub>2</jats:sub>/BiOX (X = Br, Cl) was applied to the surface of RSAB and CSAB to endow the boards with highly efficient formaldehyde purification capabilities. The prepared RSAB and CSAB possess the advantages of high strength and durability as well as low-carbon and energy saving, making them potential materials for indoor partition boards.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"19 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Damage characterization and discrimination in laser-shocked carbon fiber reinforced polymer laminates: A mass-spring-damping model approach","authors":"Ming Xu, Yuyuan Tang, Haonian Wu, Li Yan, Xiangfan Nie","doi":"10.1177/07316844241272989","DOIUrl":"https://doi.org/10.1177/07316844241272989","url":null,"abstract":"Laser bond inspection (LBI) plays a crucial role in the assessment of interfacial bond strength. However, the development of damage by laser parameters influences the detection and identification of damage. To overcome this challenge, this paper develops a “mass-spring-damping” response model for laser-shocked CFRP laminates and proposes a new damage characterization parameter “ R”. The effects of laser parameters on damage are investigated in the range of 20∼300 ns laser pulse width, 2 and 5 mm laser spot diameters and 0∼6 J laser energy on a 1.5 mm thick T300/AK8210 CFRP laminate. And by combining the parameter “ R” with the laser parameters, the corresponding damage pattern curves can be obtained and the internal damage can be characterized by dividing the four damage stages by the extreme points. Based on the pattern curve, a new analysis method is proposed and a laser shock damage discrimination model is constructed. The model can get the damage pattern curve of this specimen under 5 mm spot diameter and any pulse width within 20∼300 ns, so as to achieve the damage characterization and damage prediction. Relative error between predicted and true results within 9%.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"40 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and functional study of epoxy composites reinforced with ultra-low content single-walled carbon nanotubes","authors":"Yuxuan Yang, Wei Li, Xiaoyu Cui, Kaifei Ding, Lu Zhang, Hongmei Li, Baichen Wang, Keming Ma, Shaowei Lu","doi":"10.1177/07316844241273843","DOIUrl":"https://doi.org/10.1177/07316844241273843","url":null,"abstract":"In this paper, ultra-low content single-walled carbon nanotube(SWCNT)/epoxy composites were prepared by non-covalent modification of SWCNTs, which improved the dispersion of SWCNTs in epoxy resin, and their properties were investigated. It was shown that the electrical conductivity of SWCNT/epoxy composites increased by 7 orders of magnitude over that of epoxy resin when the content of SWCNTs was 0.005 wt%. The impact strength, tensile strength, and elastic modulus of the materials were increased by 47.9%, 58.9%, and 19.0%, respectively, and the strengthening mechanism of SWCNTs on the matrix was analyzed by SEM. Then SWCNTs were introduced into carbon fiber (CF)/epoxy composites and carbon fiber pressure vessels. In comparison to CF/epoxy composites, the shear and tensile strengths of SWCNT/CF/epoxy composites exhibited an increase of 49.2% and 9.8%, respectively, and the bursting pressure of nano-modified pressure vessels was increased by 15.5%. This study provides a new application method for nano-modified epoxy resins and broadens the application fields of epoxy resins.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"106 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}