Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications最新文献_第8页

Creep behaviour of adhesively bonded joints: A comprehensive review 粘合剂粘接接头的蠕变行为：全面回顾

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-02-28 DOI: 10.1177/14644207241233889

RM Carneiro Neto, A Akhavan-Safar, EM Sampaio, BD Simões, LL Vignoli, LFM da Silva

{"title":"Creep behaviour of adhesively bonded joints: A comprehensive review","authors":"RM Carneiro Neto, A Akhavan-Safar, EM Sampaio, BD Simões, LL Vignoli, LFM da Silva","doi":"10.1177/14644207241233889","DOIUrl":"https://doi.org/10.1177/14644207241233889","url":null,"abstract":"This review paper provides an exploration of various facets of creep behaviour in adhesives and adhesive joints, encompassing experimental procedures, prediction models, influential parameters and strategies to enhance resistance. The discussion extends to the interplay between fatigue and creep, emphasising recent advances over the last two decades. While avoiding redundancy with prior work on temperature and moisture degradation, the paper articulates connections between topics for a better understanding. A critical examination of load levels reveals that small variations significantly impact the creep life of adhesive joints, particularly prominent with epoxy adhesives. The adhesive type, joint geometry and substrate material are scrutinised, revealing distinct impacts on creep behaviour. The study underscores the critical role of adhesive thickness and overlap length, emphasising their relevance in determining the time to failure in bonded joints under creep conditions. Notably, the substrate material’s role is highlighted. As the review delves into unexplored dimensions, it calls for further research to bridge existing gaps and refine our understanding of tertiary creep and time until failure.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"8 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical characterization of jute/carbon hybrid epoxy composites 黄麻/碳混合环氧树脂复合材料的力学性能表征

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-02-26 DOI: 10.1177/14644207241233947

Henrique Queiroz, Vitor Pastor, Jorge Neto, Daniel Cavalcanti, Mariana D Banea

{"title":"Mechanical characterization of jute/carbon hybrid epoxy composites","authors":"Henrique Queiroz, Vitor Pastor, Jorge Neto, Daniel Cavalcanti, Mariana D Banea","doi":"10.1177/14644207241233947","DOIUrl":"https://doi.org/10.1177/14644207241233947","url":null,"abstract":"In recent years, the use of hybrid composites consisting of natural and synthetic fibers has gained increasing attention due to their potential for improved mechanical performance and sustainability. The primary aim of this study was to explore the impact of integrating jute and carbon fiber components into hybrid composites on the enhancement of the materials’ mechanical properties. Jute and carbon bidirectional fabrics were used with a bi-component epoxy matrix in order to fabricate the hybrid composite materials. The carbon bidirectional fabrics were placed on the outer layers, while the jute fabrics were used as the core of the hybrid composites. The core fibers were controlled by the number of layers (5), while the synthetic outer layers were varied (1 and 2, symmetrically and asymmetrically). The composite materials were characterized mechanically via tensile, flexural and impact tests. The results show that both the hybridization technique and the reinforcement symmetry significantly affect the general mechanical properties. In the analysis of tensile properties, a consistent monotonic increase in enhancement tendencies was observed with an increasing fraction of carbon fibers. Conversely, under flexion, a plateau was evident with regard to the hybridization architectural variations, although this behavior was not observed for the flexural modulus, which exhibited a continuous monotonic enhancement relative to the fraction of carbon fibers. Finally, under impact conditions, it was found that symmetry of the synthetic envelope is highly advantageous.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"11 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139979856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlating pipe dimensions and success of local heat treatment: Developing nomograms to deduce heat treatment parameters 将管道尺寸与局部热处理的成功率联系起来：开发推导热处理参数的名义图

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-02-24 DOI: 10.1177/14644207241232106

L Prakash, KR Balasubramanian, G Sankar, D Santhosh kumar, V Sudharsanam

{"title":"Correlating pipe dimensions and success of local heat treatment: Developing nomograms to deduce heat treatment parameters","authors":"L Prakash, KR Balasubramanian, G Sankar, D Santhosh kumar, V Sudharsanam","doi":"10.1177/14644207241232106","DOIUrl":"https://doi.org/10.1177/14644207241232106","url":null,"abstract":"Local post-weld heat treatment (PWHT) is the only option for heat treating field welded joints. Quite often, the success of local PWHT in alleviating the residual stress and tempering the material within the soak band (SB) is dependent on the ability to achieve the required heat treatment temperature and maintain through-thickness temperature gradient (TTG) within the specified limits at the end of heating cycle, whence soaking begins. Field observations reveal the inadequacy of AWS D 10.10 specified parameters viz. rate of heating (ROH), heat band (HB) and insulation band width in not achieving the required TTG for certain pipe dimensions. Although prior works have attempted to address this issue by widening the HB, the capacity of the heating equipment often pose a limitation. In such cases, reducing ROH is a plausible alternative. With, no such prior studies seen in literature, an exhaustive finite-element analysis simulating the local PWHT on 81, SA106GrC pipe samples (diameter and thickness varied in 9 levels each) was performed, thrice. First as per AWS recommendations, second by halving the code deduced ROH and third by doubling the code deduced HB. The trend of important outcomes (TTG, power source rating and energy consumption) with great significance to the heat treatment industry were also compared and analysed. Two nomograms were developed to serve as a ready reckoner for field heat treater in not only assessing the adequacy of heat treatment parameters but also with possible alternatives in achieving the desired TTG using field-available power source.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"195 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139948831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of applied stress on shape memory characteristics of Ni50Ti45Cu5 (at.%) alloy subjected to thermomechanical cycling 外加应力对热机械循环条件下 Ni50Ti45Cu5（at.%）合金形状记忆特性的影响

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-02-21 DOI: 10.1177/14644207241232900

Swaminathan Ganesan, Sampath Vedamanickam, Adarsh Sorekunte Huchappa

{"title":"Influence of applied stress on shape memory characteristics of Ni50Ti45Cu5 (at.%) alloy subjected to thermomechanical cycling","authors":"Swaminathan Ganesan, Sampath Vedamanickam, Adarsh Sorekunte Huchappa","doi":"10.1177/14644207241232900","DOIUrl":"https://doi.org/10.1177/14644207241232900","url":null,"abstract":"Shape memory alloys have made rapid progress in many domains, primarily biomedical (endovascular stents, orthodontic archwires), and engineering (smart actuators, robotics, hydraulic couplings). The selection of a shape memory alloy for the indented application is based on its characteristic phase transformation temperatures. These characteristic temperatures are influenced by myriad parameters, such as composition, microstructure of the alloy, defect density, etc. When an shape memory alloy under an external load is subjected to cyclic operations to perform useful work, for example, actuators, these characteristic temperatures are modified. This study, therefore, aims to understand the influence of external loading on the shape memory characteristics of a Ni50Ti45Cu5 (at.%) alloy. A wire of 1.43 mm diameter and length of 100 mm was subjected to heating and cooling between its phase transformation temperatures in a cyclic manner under constant stress (of up to 60 MPa). The maximum recovery strain, actuation/retraction rate, and the stress influence coefficient were determined and compared with those of the other Ni-Ti and Cu-based shape memory alloys. The results show that raising the load level causes an increase in the transition temperatures, especially the Ms (martensite start temperature) rather than the other phase transformation temperatures (martensite finish (Mf), austenite start (As), austenite finish (Af)). It also significantly affects the recovery strain and the rate of retraction during forward transformation and the symmetry of operation.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"2015 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139948828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of physical properties of bamboo dust with marble powder filled ceramic composites: Sustainable approach for ceramic tiles manufacturing 竹屑与大理石粉填充陶瓷复合材料的物理性质研究：瓷砖生产的可持续方法

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-01-10 DOI: 10.1177/14644207231225067

Rohit Meena, Mainak Mallik, Ramkumar Yadav, Anoj Meena, Abdul Wahab Hashmi

{"title":"Investigation of physical properties of bamboo dust with marble powder filled ceramic composites: Sustainable approach for ceramic tiles manufacturing","authors":"Rohit Meena, Mainak Mallik, Ramkumar Yadav, Anoj Meena, Abdul Wahab Hashmi","doi":"10.1177/14644207231225067","DOIUrl":"https://doi.org/10.1177/14644207231225067","url":null,"abstract":"The suggested bamboo and marble dust ceramic systems can be credited with superior qualities. It has a significant impact on the makeup of the crystalline phase. This study unquestionably sets the road for the effective use of bamboo dust and offers insightful information regarding the use of other bamboo dust waste. The present study provided a novel way to construct the ceramic tile by employing bamboo dust to partially replace marble powder as raw material to utilize bamboo dust from the North Eastern States fully. X-ray powder diffraction and scanning electron microscope were used to characterize the impacts of bamboo dust on the various ingredient composition percentages on the chemistry, mineral phase, and morphology of the ceramic tiles made from bamboo dust. The effects of bamboo dust content on macro, microscopic-scale, and surface structures were extensively examined. Results showed that at 1145 °C, the rupture modulus of a sample containing 8% bamboo dust and 4% marble powder reached 41.94 N/mm2, while a sample with 0% bamboo dust and 12% marble powder reached 26.26 N/mm2. Additionally, it exceeds the specifications for ceramic tiles for its equivalent water absorption capacity, loss of ignition, and linear shrinkage, which were 9.47%, 13.68%, and 3.66%, respectively.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"4 10","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neural networks-based modeling of compressive stress in expanded polystyrene foams: A focus on bead size parameters 基于神经网络的发泡聚苯乙烯泡沫压缩应力建模：关注珠粒尺寸参数

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-01-09 DOI: 10.1177/14644207231224172

Melvin I. Pech-Mendoza, Alejandro E. Rodríguez-Sánchez, Héctor Plascencia-Mora

{"title":"Neural networks-based modeling of compressive stress in expanded polystyrene foams: A focus on bead size parameters","authors":"Melvin I. Pech-Mendoza, Alejandro E. Rodríguez-Sánchez, Héctor Plascencia-Mora","doi":"10.1177/14644207231224172","DOIUrl":"https://doi.org/10.1177/14644207231224172","url":null,"abstract":"Expanded polystyrene is used in diverse applications, notably for protective and structural purposes. Its cushioning and mechanical strength excel under compressive loads, especially when optimally designed. A key factor influencing its compressive stress is the initial density, which plays a significant role in determining the material’s mechanical properties. This aspect is primarily determined by the bead size distribution. Although there is a vast body of literature on modeling the stress response of expanded polystyrene, there is limited emphasis on predictions that account for this factor, which is also relevant for the manufacturing of the material. Recent literature has emphasized the capability of artificial neural networks in predicting the compressive behaviors of expanded polystyrene, incorporating various factors. In this study, artificial neural network models were used to predict the compressive stress responses of polystyrene foams, with a focus on bead size distribution parameters. Specimens of two distinct initial densities were examined using micrographs to identify bead diameters and distributions, which were then used as model inputs. Compression tests on these specimens were conducted at two different rates. The collected data facilitated the development of predictive models for the material’s compressive behavior. The model predictions closely match experimental findings, with error metrics showing deviations <3% compared to the experimental data. This highlights the utility of artificial neural networks in modeling the compressive behavior of polystyrene foams, particularly when bead size and related parameters are considered.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"8 7","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139444263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibration analysis of metallic structure of an innovative dam gate 创新水坝闸门金属结构的振动分析

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-01-09 DOI: 10.1177/14644207231221270

C. Itu, Sorin Vlase, Marin Marin, Andreas Öchsner

{"title":"Vibration analysis of metallic structure of an innovative dam gate","authors":"C. Itu, Sorin Vlase, Marin Marin, Andreas Öchsner","doi":"10.1177/14644207231221270","DOIUrl":"https://doi.org/10.1177/14644207231221270","url":null,"abstract":"An analysis of the vibrations that may occur at the gate of a dam is proposed. Thus, the determination of an optimal constructive solution is sought from the point of view of vibration behavior. The dam gate is part of a constructive solution of an oscillating center pivot dam, which closes the gates if the downstream water level rises above a certain limit. This constructive solution is new. The gates are controlled by the water level. Such a system is easy to implement practically and the construction and maintenance costs are lower than in the case of classic dams. The problem that arises is that of the behavior of such a structure to vibrations. The eigenvalues of the gate structure are determined for a constructive solution proposed by the designers and the behavior of the forced vibrations that can stress the gate is studied. The analysis is performed for the case where the dam gates are closed. The work continues previous research on the structure's resistance to static loads and justifies the use of this solution in design. The method used to carry out the study is the finite element method. The advantages of the studied structure consist of lower costs for the proposed relatively simple constructive solution.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"56 28","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139442105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical performances of printed carbon fiber-reinforced PLA and PETG composites 印刷碳纤维增强聚乳酸和 PETG 复合材料的机械性能

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-01-08 DOI: 10.1177/14644207231225761

Sirine Ammar, B. Ben Fraj, H. Hentati, A. Saouab, Mounir Ben Amar, Mohamed Haddar

{"title":"Mechanical performances of printed carbon fiber-reinforced PLA and PETG composites","authors":"Sirine Ammar, B. Ben Fraj, H. Hentati, A. Saouab, Mounir Ben Amar, Mohamed Haddar","doi":"10.1177/14644207231225761","DOIUrl":"https://doi.org/10.1177/14644207231225761","url":null,"abstract":"In this study, the 3D printing technology was adopted to produce carbon fiber-reinforced polylactic acid and polyethylene terephthalate glycol composites. Fused deposition modeling process was conducted at different settings of printing parameters, specifically, raster angle, printing speed, and extrusion temperature. Each of the selected printing parameters has a key role in making the best-printed part in terms of layer-by-layer deposition quality and mechanical performance. To examine how these process parameters affect the behavior of the printed parts, tensile tests were performed and mechanical properties were assessed. It was reported that the printing orientation, characterized by the raster angle, can be identified as the determining factor to define the fracture mode. Composite parts printed with 0° raster angle, aligning with the tensile loading path, exhibit the highest levels of stiffness and ductility. Ductile and brittle fractures corresponding to 0° and 90° raster angles, respectively, were illustrated through optical observations of failure profiles. Furthermore, the tensile test indicates that higher printing speed leads to a significant deterioration in mechanical performances, notably reducing the stiffness of the printed structures. Scanning electron microscopy analysis confirmed that increasing the printing speed results in greater porosity within the structure, thereby weakening its mechanical strength. Regarding the extrusion temperature, it was shown that elevating it enhances the mechanical characteristics of the printed parts, particularly in terms of strength and ductility. Referring to microstructural observations, this outcome is attributed to the improved adhesion between the deposited layers and the reduction in porosity at high extrusion temperature.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"9 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139445835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Zr on static recrystallization of deformed austenite and strain-induced precipitation in Ti microalloyed steel Zr 对钛微合金钢中变形奥氏体静态再结晶和应变诱导析出的影响

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-01-05 DOI: 10.1177/14644207231224976

Hanyu Luo, Xing Liu, Chao Lu, Jianchun Cao, Yinghui Yang, Xuegang Xiong, Chuangwei Wang

{"title":"Effect of Zr on static recrystallization of deformed austenite and strain-induced precipitation in Ti microalloyed steel","authors":"Hanyu Luo, Xing Liu, Chao Lu, Jianchun Cao, Yinghui Yang, Xuegang Xiong, Chuangwei Wang","doi":"10.1177/14644207231224976","DOIUrl":"https://doi.org/10.1177/14644207231224976","url":null,"abstract":"The static recrystallization and strain-induced precipitation behavior of Ti and Ti-Zr low carbon microalloyed steels were studied through isothermal stress relaxation experiments at different deformation temperatures (875–1025 °C). The precipitation kinetic curves of microalloyed carbides were obtained, and the effect of Zr on the precipitation kinetics of microalloyed carbides was analyzed. Two static recrystallization kinetic models were established, and the activation energies for static recrystallization of Ti steel and Ti-Zr steel were calculated to be 312.44 and 246.59 kJ/mol, respectively. The results indicate that the addition of Zr lowers the nose point temperature of the precipitation–time–temperature curve, shortens the incubation period for the nucleation of precipitates, promotes the nucleation of strain-induced precipitates in Ti microalloyed steel, and reduces the coarsening rate of precipitates particles by an order of magnitude. In addition, the addition of Zr also advances the end time of static recrystallization of deformed austenite, inhibits the growth of static recrystallization austenite grains in Ti steel during the isothermal process, and makes the austenite grains finer and more uniform.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"47 47","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139382191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation, characterisation and properties of green composites from Pinus roxburghii fibre 罗布麻纤维绿色复合材料的制备、表征和性能

IF 2.4 4区材料科学

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-01-03 DOI: 10.1177/14644207231225068

Rajesh Kumar, P. K. Rakesh, D. Sreehari, Deepak Kumar, T. Naik

{"title":"Preparation, characterisation and properties of green composites from Pinus roxburghii fibre","authors":"Rajesh Kumar, P. K. Rakesh, D. Sreehari, Deepak Kumar, T. Naik","doi":"10.1177/14644207231225068","DOIUrl":"https://doi.org/10.1177/14644207231225068","url":null,"abstract":"Pinus roxburghii needles are plentiful in the Himalayas and may be processed into a natural fibre. In this research, polylactic acid composites were made, including both untreated and treated Pinus roxburghii fibres as reinforcing materials. The Pinus roxburghii fibres were produced by subjecting the Pinus roxburghii needle to an alkali treatment with a 5% sodium hydroxide solution in water, and the Pinus roxburghii fibres were obtained by a water retting extraction method. Pinus roxburghii fibre–polylactic acid composites were made using a compression moulding process. Composites were fabricated utilizing treated and untreated Pinus roxburghii fibre with fibre loadings of 20%, 30%, and 40% by weight. Subsequently, the investigators examined the alterations in the tensile, flexural, impact, and morphological properties with sodium hydroxide treatment. As expected, alkaline treatment considerably boosted the compatibility between Pinus roxburghii fibre and polylactic acid, leading to improvements in the morphological, hardness, and mechanical characteristics of Pinus roxburghii fibre composites. In addition, when 30 wt.% of treated fibres were used, the mechanical characteristics improved.","PeriodicalId":20630,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","volume":"6 24","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139389538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0