Applied Mechanics and Materials最新文献_第5页

Reprocessable and Recyclable Self-Healing Natural Rubber/Carbon Black Composite Based on Metal Thiolate Ionic Network 基于硫醇酸金属离子网的可再加工和可回收的自愈合天然橡胶/炭黑复合材料

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-xyvs0h

Noor Faezah Mohd Sani, Lai Mei Fen, R. K. Shuib

引用次数: 0

Cellulose-Based Oil Palm Empty Fruit Bunch as an Alternative Filler for Latex Application: A Review 纤维素基油棕空果束作为乳胶应用的替代填料：综述

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-5dfzfb

Nuur Syuhada Dzulkafly, Anson Teh Tian Loke, A. Azura

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Analytical Studies of Fluid Conveying Pipes on Viscoelastic Foundation Using Differential Transforms Method 利用微分变换法对粘弹性地基上的流体输送管道进行分析研究

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-ts7pbd

O. Adeleye, A. Yinusa, Ihuoma V. Diwe

{"title":"Analytical Studies of Fluid Conveying Pipes on Viscoelastic Foundation Using Differential Transforms Method","authors":"O. Adeleye, A. Yinusa, Ihuoma V. Diwe","doi":"10.4028/p-ts7pbd","DOIUrl":"https://doi.org/10.4028/p-ts7pbd","url":null,"abstract":"This study presents an analytical investigation of the vibration of fluid-conveying pipes on viscoelastic foundations using the differential transform method. The effects of a new time dependent viscosity parameter in the modified Winkler viscoelastic foundation is studied and analyzed. The governing equation is a fourth-order partial differential equation with pinned-pinned boundary conditions, which required a special analytical method for solution. The differential transform method was applied to obtain the solution of the governing partial differential equation for the fluid-conveying pipes on viscoelastic foundations. The time-dependent viscosity parameter in the modified Winkler viscoelastic model was implemented and simulated to determine the behavior of the viscoelastic foundation. The obtained analytical solution was validated with Runge-Kutta order four numerical method. The effects of foundation stiffness , coefficient of foundation damping and the frequency mass ratio on the governing model equation were investigated. In addition, the bending and deflection of the pipe on a viscoelastic foundation are compared with those on an elastic foundation. The analytical and the numerical solutions are in good agreement. From the study, it is observed that an increase in the foundation stiffness results in increase in the pipe inherent frequencies. Furthermore, the vibration of the pipe on a viscoelastic foundation shows better control and reduction compared with its vibration on an elastic foundation.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":"65 3-4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139865731","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}

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A Review on Methods of Cenosphere Separation from Fly Ash 从粉煤灰中分离钙球的方法综述

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-q3damx

Abu Dzar Johar, H. Mohamed, Z. Itam, N. Zahari, Z. C. Muda, A. Syamsir, S. Beddu, M. Zawawi, M. Zainoodin, Shaikh Muhammad Mubin, N. Kamal

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Transforming Carbide Lime Waste into Marketable PCC: Effect of Mechanical Disturbance 将硬质合金石灰废料转化为适销对路的 PCC：机械干扰的影响

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-ycuq6s

E. M. Salleh, Rohaya Othman, S. N. M. Sabri, Z. Mahim

{"title":"Transforming Carbide Lime Waste into Marketable PCC: Effect of Mechanical Disturbance","authors":"E. M. Salleh, Rohaya Othman, S. N. M. Sabri, Z. Mahim","doi":"10.4028/p-ycuq6s","DOIUrl":"https://doi.org/10.4028/p-ycuq6s","url":null,"abstract":"The acetylene market is anticipated to be driven by the growing applications across numerous industries particularly chemical synthesis, oxy-acetylene welding, and metal cutting. Attributable to wide-range uses, acetylene witnesses stable growth in the global market. However, the production of acetylene results in increasing generation of carbide lime waste that is classified as a scheduled waste under Malaysian Environmental Quality Act: EQA 1974 (SW427) due to its high alkalinity. The rising amount of the waste has warranted the need for repurposing its usage to avert handling and disposal difficulties. In overcoming this crucial environmental issue, the carbide lime waste was transformed into a more marketable product so-called precipitated calcium carbonate (PCC) via feasible carbonation, promoted using natural sucrose solution. During the carbonation process, stirring rate was manipulated (i.e 300, 500, 700 and 1000 rpm) in investigating its effects on the PCC formation. Increasing the mechanical disturbance resulted in significant time reduction from 28 minutes to only 9 minutes and particle refinement. The production of PCC with purity above 98% suggested that the carbide lime waste was successfully transformed into high-grade PCC, which not only may help in preserving environmental sustainability yet can also offer profitable return to industry.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":"15 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139804175","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

A Survey of Drones in Agriculture Sector 农业领域无人机调查

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-xcmkl4

J. Boopalamani, P. Ayswariya, S. P. Raj, P. Yagnitha, N. Sarrvesh, Abhishek Jha

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Characterisation of Water Treatment Sludge (WTS) at a Water Treatment Plant in Melaka 马六甲一家水处理厂水处理污泥 (WTS) 的特性分析

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-bsxzp1

A. R. Saleman, Ridhwan Jumaidin, Al Amin Mohamed Sultan, U. Azlan, Muhammad Zulfattah Zakaria

{"title":"Characterisation of Water Treatment Sludge (WTS) at a Water Treatment Plant in Melaka","authors":"A. R. Saleman, Ridhwan Jumaidin, Al Amin Mohamed Sultan, U. Azlan, Muhammad Zulfattah Zakaria","doi":"10.4028/p-bsxzp1","DOIUrl":"https://doi.org/10.4028/p-bsxzp1","url":null,"abstract":"Water treatment sludge (WTS) is a by-product produced in the process of water treatment plants (WTP). It is estimated that an ordinary WTP produces over 10,000 tonnes of WTS per day, which has become a major concern in the management of WTS. Numerous previous studies have been accomplished to determine a safe disposal method and the potential reuse of WTS. In most investigations, material characterisation was the adopted method. It is known that each WTP produces different chemical composition of WTS according to raw water intake and the treatment process. The aim of this paper is to examine the chemical composition of WTS in the WTP at Melaka. The WTS sample is collected from WTP after the pressing process, where large amounts of water have been removed. The sample is tested using the Scanning Electron Microscopy with energy dispersive X-ray (SEM-EDX) and X-ray Diffraction (XRD). The SEM-EDX results revealed that by weight percentage (%), WTS contains zirconium (Zr) (28 to 46%), oxygen (28 to 40%) and carbon (7 to 26%). Aluminium and silicon have weight percentages ranging from 7 to 8%. The outcomes are then confirmed by XRD, which showed the high intensity of Zr and α-Zr at approximately 35.3 and 36.1. of 2θ. Based on these findings, the suitable and potential reuse of WTS would be the extraction of Zr. However, further research is required to verify the consistency of Zr in WTS.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":"79 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139804114","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

Review on Performance and Emissions Characteristics of Compression Ignition Engine Fueling Non-Edible Vegetable Oil 以非食用植物油为燃料的压燃式发动机性能和排放特性评述

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-cykid1

Kamta Prasad Tiwari, Ram Narayan Singh

{"title":"Review on Performance and Emissions Characteristics of Compression Ignition Engine Fueling Non-Edible Vegetable Oil","authors":"Kamta Prasad Tiwari, Ram Narayan Singh","doi":"10.4028/p-cykid1","DOIUrl":"https://doi.org/10.4028/p-cykid1","url":null,"abstract":"The tremendous exhaustion of resources, a surprising price increase of petroleum fuel and worldwide ecological issues implement to find renewable fuel for compression ignition engine. Non-edible vegetable oils have proven consensus to opt as a replacement for diesel fuel due to comparable properties and less-pollutant characteristics. Using Unmixed Untreated Non-edible Vegetable Oil (UUNVO) in the CI engine matches the needs of a sustainable future and restricts the intensifying cost involved in biodiesel production. This paper aims to review the influence of various UUNVO (Karanja, Jatropha, Neem, Linseed, Mahua and Rubber Seed etc.) on the important performance parameters and emission level of diesel engine. UUNVO can be fuelled to the unmodified CI engine. However, the viscosity of UUNVO is reasonably higher compare to diesel fuel at room temperature, which deteriorates the engine performance and exhaust emission. Minor changes in the injection line for preheating the UUNVO and operating parameters are the way to improve it. It can clearly understand here that preheated UUNVOs typically increase NOx emissions and decrease PM, HC, and CO emissions level compared to standard diesel. UUNVO can substitute diesel fuel completely for short-duration operation. With the long-duration operation, UUNVO produces problems like poor engine performance, injector chocking, and erosion of piston crown, rings, cylinder liner, and other internal parts, and degradation of the lubricant. Problems raised due to durability can be minimized by controlling operational parameters.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139806037","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

Evaluation of Mechanical Properties with the Use of EPS Polymer for the Preparation of Sustainable Composite Based on Concrete 使用 EPS 聚合物制备基于混凝土的可持续复合材料的力学性能评估

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-gr00jv

D. F. dos Santos

{"title":"Evaluation of Mechanical Properties with the Use of EPS Polymer for the Preparation of Sustainable Composite Based on Concrete","authors":"D. F. dos Santos","doi":"10.4028/p-gr00jv","DOIUrl":"https://doi.org/10.4028/p-gr00jv","url":null,"abstract":"The civil construction area is one of the activities with the highest consumption of raw materials, presenting a large generation of waste. The use of EPS polymer (expanded polystyrene), in addition to being technological, has a low environmental impact by reducing the use of traditional concrete inputs, in addition to being 100% recyclable, cost-effective. The study enabled the elaboration of the composite based on concrete with different contents of recycled expanded polystyrene (EPS) added (0.20; 0.10 and 0.05%, in % weight/weight). The use of this material allowed the partial replacement of standard sand in the composite aggregate, obtaining an environmentally sustainable material, with low specific mass, thermal resistance with insulating, hydrophobic properties that allow low water absorption, with a low impact manufacturing process. This addition of EPS to the fresh concrete mixture showed a reduction in water penetration, making the construction material more hydrophobic, minimizing infiltration problems, reducing the physical process of absorption. The specimens for the concentration of 0.10% (weight/weight) showed better axial mechanical performance, with an average of 11.4 kgf, 52% in gain of reinforcement effect, in relation to the concentration of 0.20% (weight/weight). For this concentration of 0.20 (weight/weight), the EPS beads obtained greater homogeneity in the dispersion in the cementitious matrix, promoting better impact absorption during mechanical efforts. The absorption test was carried out for 10 and 20 minutes, and with that the percentage of water absorbed for each composite was verified. The specimens prepared with higher contents of styrofoam (0.20% and 0.10%), with 0.98 and 1.29%, respectively, of absorbed water, showed a more hydrophobic character due to the higher percentage of presence of pearls. EPS, making the material less permeable to water. The absorption results were quite satisfactory, showing values below 20%, as recommended in the NBR 8491 standard.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":"14 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139803565","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

Experimental Analysis of Cryogenic-Treated Single Tubular Electrodes in Micro-EDM Using CRITIC-MOORA Based Integrated Approach 使用基于 CRITIC-MOORA 的集成方法对微线切割中低温处理的单管电极进行实验分析

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-ria4fs

Nivin Vincent, F. R. John

{"title":"Experimental Analysis of Cryogenic-Treated Single Tubular Electrodes in Micro-EDM Using CRITIC-MOORA Based Integrated Approach","authors":"Nivin Vincent, F. R. John","doi":"10.4028/p-ria4fs","DOIUrl":"https://doi.org/10.4028/p-ria4fs","url":null,"abstract":"The current research focuses on the viability of rotating, single tubular brass electrodes undergoing shallow cryogenic treatment (at -140°C) before micro-drilling austenitic stainless steel SS316L with the electrical discharge machining process. In order to study and achieve a better rate of material removal and a lower rate of electrode wear, the Taguchi L18 experimental matrix representing the four variables, current, duty cycle, capacitance level, and gap voltage was examined. Regular tap water served as the dielectric fluid to uphold the sustainability concept of the machining experiments and an integrated hybrid approach incorporating CRITIC (criteria importance through inter-criteria correlation) weight determination method and MOORA (multi-objective optimization by the ratio analysis) was applied for decision making. The weight fractions (significance) for MRR and EWR were found to be 0.5532 and 0.4467, respectively and the MOORA method converted multiple objective parameters into a single objective function with weight fractions assigned to each of them. An ideal parameter combination highlighting the dominant significance of duty cycle, pulse current, capacitance level and gap voltage with corresponding values of 70%-18A-1-34V was obtained and the results were substantiated with relevant confirmation experiments. The highest MRR achieved is 10.0961 mm³/min and the lowest EWR is found to be 3.9640 mm³/min. Moreover, the electrode tip regions, the micro holes, and the surrounding workpiece surfaces were also thoughtfully scrutinized and contrasted using scanning electron micrographs (SEM), which validates the worth and significance of cryogenically frozen electrodes in successful micro-drilling of SS316L material.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":"3 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139804119","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