Key Engineering Materials最新文献_第4页

Pyrolytic Plastic Oil Distillation Study of Five Mixed Plastic Waste Pyrolysis 五种混合塑料废弃物热解塑料油蒸馏研究

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-9tuu9g

Janter Simanjuntak, B. Tambunan, J. Sihombing, Mohd Zamri Zainon, Nurin Wahidin Bint Mohd Zulkifli, Riduwan Riduwan

引用次数: 0

Improving Efficiency of Heat Pump Dryer Using R32 Refrigerant by Nanofluid 利用纳米流体提高使用 R32 制冷剂的热泵干燥器的效率

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-ol1box

Prapanphong Somsila, Eakpoom Boonthum, Aphainun Namkhet, U. Teeboonma

{"title":"Improving Efficiency of Heat Pump Dryer Using R32 Refrigerant by Nanofluid","authors":"Prapanphong Somsila, Eakpoom Boonthum, Aphainun Namkhet, U. Teeboonma","doi":"10.4028/p-ol1box","DOIUrl":"https://doi.org/10.4028/p-ol1box","url":null,"abstract":"Drying process are important in many areas in the agriculture and food sectors, including increasing shelf life, improving transportability by reducing product weight or adding value to products. However, the main problem in the drying process is the relatively high energy consumption. Therefore, the development of energy-saving dryers is necessary. Based on the above reasons, this research aims to study the performance enhancement of heat pump dryers using R32 refrigerant by using heat recovery and nanofluid. The heat that is exhausted from the refrigerant by a heat exchanger. In this work, a Nano titanium dioxide (Ti2O3) was selected. Pork was dried under the conditions of drying temperature of 45, 50 and 55 °C and water flow rate in the heat exchanger at the front of the drying chamber of 2, 3 and 4 L/min. Criteria for evaluating heat pump dryer performance include drying rate, specific moisture extraction rate, specific energy consumption, heat pump dryer performance coefficient compared to heat pump dryers without nanofluid. The results showed that increasing the drying temperature and water flow rate in heat exchanger increased the drying rate, power and specific moisture extraction rate in the heat pump dryer using nanofluid. Whereas, the specific energy consumption was lower than the case without nanofluid. Increasing the drying temperature and the water flow rate in the heat exchanger had relatively little effect on the coefficient of performance (COP) of the heat pump dryer. Moreover, the study found that the coefficient of performance of heat pump dryer with nanofluid was in the range of 4.33 - 4.42.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374337","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

Experiments of Failure and Damage in ITO-Coated PC/FPC with ACF Bonding due to Bending Fatigue 采用 ACF 粘合技术的 ITO 涂层 PC/FPC 因弯曲疲劳而失效和损坏的实验

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-tjos1x

Chao‐Ming Lin, C. Chu

引用次数: 1

Titanium Nitriding: A Systematic Literature Review 氮化钛：系统文献综述

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-vz6a7i

Aria Wira Yuda, Amir Arifin, I. Yani, Barlin Oemar

{"title":"Titanium Nitriding: A Systematic Literature Review","authors":"Aria Wira Yuda, Amir Arifin, I. Yani, Barlin Oemar","doi":"10.4028/p-vz6a7i","DOIUrl":"https://doi.org/10.4028/p-vz6a7i","url":null,"abstract":"In the last twenty years, the manufacturing of titanium and its alloys for commercial use continued to expand. As this material has several very advantageous properties, leading to increasing applications in various industries, it is seldom used in mechanical engineering applications due to its tribological properties, which are unfavourable. The nitriding process is one of the most frequently used thermochemical processes designed to enhance the surface characteristics of titanium alloys and improve tribological properties. Various types of nitriding for titanium are studied, such as ion nitriding, plasma nitriding, laser nitriding and gas nitriding. This article provides a comprehensive examination of research papers on different advancements through a systematic literature review conducted in the period 2017-2023 about titanium nitriding for its process parameters, characteristics and functionalities of the product, particularly emphasising their contributions in surface characteristics and mechanical properties. The review seeks to offer an understanding of how the predominant processing factors, specifically temperature and time, affect the microstructure and the creation of novel phases. This review suggests a challenge for future researchers to investigate mechanisms of microstructure evolution and its impact on mechanical properties in conditioned environments to microhardness and ability to withstand rusting of titanium and its alloys.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374304","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

Magneto-Conductive and Magnetic Properties in La1-xSrxMnO3 Thin Films on a-SiO2 Substrates Produced by Metal Organic Decomposition Method 金属有机分解法制备的 a-SiO2 基质上 La1-xSrxMnO3 薄膜的磁导和磁性能

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-gs6nki

Sara Kawaguchi, Kohei Hamada, Hiromi Kobori, Toshifumi Taniguchi, Tetsuo Shimizu

{"title":"Magneto-Conductive and Magnetic Properties in La1-xSrxMnO3 Thin Films on a-SiO2 Substrates Produced by Metal Organic Decomposition Method","authors":"Sara Kawaguchi, Kohei Hamada, Hiromi Kobori, Toshifumi Taniguchi, Tetsuo Shimizu","doi":"10.4028/p-gs6nki","DOIUrl":"https://doi.org/10.4028/p-gs6nki","url":null,"abstract":"We have studied magneto-conductive and magnetic properties of La1-xSrxMnO3 (LSMO) thin films on a-SiO2 substrates produced by the metal organic decomposition (MOD) method. LSMO thin films for x = 0, 0.15 and 0.3 have been produced in a pure O2 gas atmosphere. Although LaMnO3 (LMO) single crystal is an antiferromagnetic insulator (AFI), LMO thin films we have produced show ferromagnetic metal (FM) properties for suitable heat treatment conditions. We consider that the excess of O2- ions in LMO thin films produced in a pure O2 gas atmosphere induces the strong hole self-doping into those and the LMO thin films change from AFI to FM. Whereas, the ordinary hole doping is also occurred in LSMO thin films at x > 0. Thus, the carrier doping for LSMO thin films at x > 0 is caused by the hole self-doping by O2- ions and the ordinary hole doping by the replacement of La3+ ions by Sr2+ ones. To investigate the crystallographic and surface structures of the LSMO thin films, X-ray diffraction and SEM measurements have been performed, respectively. From the X-ray diffraction measurement, we have found that all LSMO thin films have perovskite structure and are polycrystalline. From the SEM measurement, we have seen that the LSMO thin films are formed of the aggregation of LSMO fine particles. Electrical resistivities (ERs) and magneto-resistivity (MR) ratios of the LSMO thin films have been measured on the temperature dependence (4K-300K). From MR ratio measurements, the coercive forces of them have been obtained as a function of temperature, and the Curie temperatures have been estimated from the temperature dependences of the coercive forces. We have discussed the origin of the magneto-conductive and magnetic properties of LSMO thin films.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374339","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

Fatigue Performance and Impact Toughness of PBF-LB Manufactured AlSi 10Mg PBF-LB 制造的硅铝 10Mg 的疲劳性能和冲击韧性

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-our7cc

T. Rautio, M. Jaskari, M. Hietala, Aappo Mustakangas, A. Järvenpää

{"title":"Fatigue Performance and Impact Toughness of PBF-LB Manufactured AlSi 10Mg","authors":"T. Rautio, M. Jaskari, M. Hietala, Aappo Mustakangas, A. Järvenpää","doi":"10.4028/p-our7cc","DOIUrl":"https://doi.org/10.4028/p-our7cc","url":null,"abstract":"Additive manufacturing (AM) has transformed the production of complex geometries and customized components.Powder Bed Fusion with Laser Beam (PBF-LB) is a popular AM technique known for its ability to produce parts with excellent mechanical properties. This study focuses on the characterization of AlSi10Mg, an aluminum alloy widely used in aerospace and automotive industries, manufactured through PBF-LB. The influence of printing orientation on the mechanical properties of the material is investigated. Previous research has shown that PBF-LB manufactured AlSi10Mg can exhibit superior mechanical properties compared to traditional material, but the anisotropic nature of parts produced by PBF-LB can significantly affect their properties. Tensile, impact, and fatigue testing are conducted to assess the mechanical behavior of the printed AlSi10Mg specimens under different loading conditions. Microstructural analysis is performed using Field-Emission Scanning Electron Microscopy (FESEM) equipped with Electron Backscatter Diffraction (EBSD) to examine the microstructural features introduced during the PBF-LB process. The results provide insights into the mechanical behavior of AlSi10Mg produced through PBF-LB and contribute to the design and utilization of components manufactured using this AM technique.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374767","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

Mechanical Behavior and Void Analysis of 3D Printed PEEK by Fused Deposition Modeling (FDM) with Varying Infill Patterns 采用熔融沉积建模（FDM）技术三维打印具有不同填充图案的聚醚醚酮（PEEK）的力学性能和空隙分析

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-ewp2su

Sherwin Leemark Abing, P. A. D. De Yro, S. A. C. Arañez

{"title":"Mechanical Behavior and Void Analysis of 3D Printed PEEK by Fused Deposition Modeling (FDM) with Varying Infill Patterns","authors":"Sherwin Leemark Abing, P. A. D. De Yro, S. A. C. Arañez","doi":"10.4028/p-ewp2su","DOIUrl":"https://doi.org/10.4028/p-ewp2su","url":null,"abstract":"Polyether ether ketone (PEEK) was printed via FDM using gyroid, line, and tri-hexagon infill patterns. Its effect on the mechanical behavior (tensile, flexural and compression) and the investigation of void percentage and orientation angles within the internal structure were studied. The line pattern showed the highest tensile strength at 55.46 MPa due to its internal structure with a higher number of deposited layers oriented along the direction of the stress enabling higher stress absorption, the laminate theory. The angular lines on both tri-hexagon and gyroid patterns provided disadvantage as supported by Timoshenko's theory where the internal structures acted like a beam which is prone to easier deformation. Line pattern also demonstrated the highest flexural strength at 103.67 MPa. The continuity of the pattern along the internal structure perpendicular to the direction of the force provided more effective transfer of stress. However, the highest compressive load was observed in gyroid pattern with 8,266.89 N. The redundancies in the internal structure design of gyroid pattern enabled more compression load absorption. Symmetry and internal angles in gyroid and tri-hexagon patterns allowed more compressive force which are more susceptible to fractures due to higher strains created. Lastly, void percentage showed line pattern with the lowest at 1.53%. In addition, the mean void orientation angle showed that the closer it is to 0o, the weaker the part.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374835","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

Sheet Forming of Roll Cast Aluminum Alloy for Die Casting 用于压铸的辊铸铝合金板材成型

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-n7poab

T. Haga, Shunpei Mori, Hiizu Ochi, H. Fuse, H. Watari, Shinichi Nishida

引用次数: 0

Materials Processing Technologies, Waste Treatment and Food Engineering 材料加工技术、废物处理和食品工程

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/b-7ot0sb

Kazuo Umemura, Li Jing Wang, Shofwatul Uyun, Deny Setiawan, M. Kaloop

引用次数: 0

Printability and Mechanical Properties of PLA/Iron Composites for FDM 3D Printing 用于 FDM 3D 打印的聚乳酸/铁复合材料的可打印性和机械性能

Key Engineering Materials Pub Date : 2024-03-27 DOI: 10.4028/p-yo4czk

Korbkaroon Doungkeaw, Jennarong Tungtrongpairoj

引用次数: 0