bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance of a Piezoelectric Energy Harvester with Rubber Compound Modification
Authors: Muhamad L , Saparin M A , Salleh H 
Published: March 2024

Abstract
Recently, there has been a significant increase in the research on Piezoelectric energy harvester. Piezoelectric energy harvester is capable of producing electrical charge when mechanically deformed. The application is to be used to power up mobile electronic. The common problem in the piezoelectric energy harvester is the material is brittle and causes fatigue failure at the same time the material is relatively costly. One of the method to address this problem is to add a rubber compound layer which can improve the flexibility and power output of the energy harvester. It can also improve the cost per output density of the piezoelectric energy harvester because the rubber compound has low cost. But, currently none of existing literatures explore into this type application. Thus, the objective of this paper is to investigate the voltage output and effectiveness of piezoelectric energy harvester with rubber compound modification. The test in the laboratory was set up to optimize PZT (Lead Zirconate Titanate) Energy Harvester cantilever beams using rubber compound layer as modification. The tests were conducted using frequency range of 30 Hz to 70 Hz with fixed RMS 0.25g acceleration. The result shows promising output for the PZT energy harvester with rubber compound, with an increase of between 16.6% to 61.2% open circuit voltage when compared to the standard PZT.
A short review on the effect of mechanical vibration in the evaluation and replacement of bone cement-anchored implants in human bone
Authors: Kadoura A , Abdul Jalil N A , Arumugam M , Azman M A 
Published: March 2024

Abstract
Mechanical vibration can be defined as the regular or irregular repetitive movement that makes the body leave its resting state. Mechanical vibrations have an important role in keeping the bones and joints healthy. This review study aimed to investigate the effect of mechanical vibration in the evaluation and replacement of bone cement-anchored implants in human bone. The empirical studies related to mechanical vibrations and bone cement-anchored implants were reviewed. The combinations used to search for studies related to the topic included mechanical vibrations, evaluation, replacement, bone, cement-anchored implants, and human bone. The reviewed studies show that mechanical vibration, either local or whole-body, promotes bone growth in and around the implant. The stimulation of bone growth is important for the strength and durability of cement-anchored bone implants. Through the reviewed studies, it was concluded that local or whole-body mechanical vibration improves the stability and durability of bone and bone implants. Mechanical vibration achieves this effect by increasing bone formation in and around the implants and by improving the contact between the implant and the bone.
Tradescantia Zebrina as New Creeping Plant for Good Sound Absorption Performance
Authors: Redzuan I H , Darus N , Haron Z , Abidin N I , Galip N S , Kassim A S F A 
Published: March 2024

Abstract
The increasing need to address the environmental consequences of noise and visual pollution caused by infrastructure and industrial projects in residential regions has led to the implementation of regulations. These regulations aim to minimize such impacts and have resulted in a rising demand for acoustic barriers and visual screening solutions. Presently, green plants are being employed globally not only for creating a sustainable environment within green buildings but also for their sound absorption capabilities. The choice of plants suitable for green walls primarily focuses on tropical and annual species that demonstrate effortless growth capabilities. This research examines the capability of sound absorption of chosen creeping plants namely Tradescantia Zebrina (TZ) that potentially be used for green facades. The physical properties including morphology and acoustical properties by measuring the sound absorption coefficient (SAC) using two microphone impedance tubes. The plant with the noise reduction coefficient (NRC) was investigated further for the effect of the thickness of the plant on the sound absorption performance of a wall. The results showed 0.23, 0.35, and 0.52 NRC values respectively obtained from the different thicknesses of TZ There was an increment of sound absorption as the plants were attached to concrete brick as a green facade on its surface. On this basis, the capability to absorb sound by TZ as the green facade can be considered when designing the environmental structure.
Evaluation of viscous damper on the vibration transmission to the piping system and the support structure exposed to sinusoidal vibration in vertical, horizontal, and lateral directions.
Authors: Ahmad Radzi M F , Dzubir F A Abd. , Abdul Jalil N A , Zulkefli Z A , Putra A 
Published: March 2024

Abstract
Viscous dampers have been shown to be a potential solution to addressing piping vibration problems. The primary objective of this study is to confirm the ability of viscous dampers in addressing piping vibration problem in a piping system at different supporting structural stiffness. The piping systems were fabricated and arranged horizontally, vertically, and axially with respect to the direction of the input vibration force. Input force was applied to the piping system using an electromagnetic shaker. A sinusoidal vertical vibration at a 5 Hz frequency (21 mm/s RMS) was applied at one end of the piping system. The use of viscous damper was varied from no viscous damper to one, two and three dampers. Results showed that having three viscous dampers installed caused the piping vibration at point P2 showed the maximum reduction in vibration of up to 80% for three axes, respectively. For the case of structural vibration, the measurement results showed that point S1 experienced the highest vibration exposure before the installation of the viscous dampers, in all axes. With the three viscous dampers installed, the maximum vibration reduction for the sinusoidal vibration test case at point S1 were 86% and 91% for the x- and z-axes, respectively. In conclusion, viscous dampers able to reduce both the piping and structural vibration in multiple axes. This study also highlights the importance of positioning dampers in reducing piping vibration and vibration transmitted to the structure, with reduction up to 90% amplitude for sinusoidal input and 80% for random input.
Vibration Monitoring using Arduino Data Acquisition to Detect Anomalies in the Operation of Water Pump.
Authors: Bin Mohd A , Md Rezali K A , Abdul Rahim S , Zainal Abidin A M , Mohamad Yunus M F 
Published: March 2024

Abstract
Arduino Data Acquisition (ADAQ) is a popular development device among hobbyists nowadays because of its cheap price. Arduino comes in many forms, and recently, Arduino has been used in many industries for many applications, including vibration monitoring. This study aimed to investigate feasibility of using an Arduino data acquisition to detect anomalies in the operation of a water pump. An Arduino Mega was used with an ADXL345 accelerometer attached to a water pump motor to measure vibration continuously. Vibration was measured with a sampling rate of 530 Hz. Water pump vibration data abnormal conditions were measured and analysed to determine the problem. Results showed that vibration during anomalies was significantly greater than that in normal conditions. This study concludes that Arduino Data Acquisition with ADXL345 can detect abnormal water pump running conditions.
Magnetorheological Damper Force Prediction using Particle Swarm Optimization and Long Short-Term Memory Model
Authors: Ain Fatihah Murad Nur , Syahril Ramadhan Mohd Saufi Mohd , Hafizal Mohd Yamin Ahmad , Firdaus Isham Muhammad , Hussin Ab Talib Mat 
Published: March 2024

Abstract
Smart materials, like magnetorheological (MR) fluid, are gaining attention for their ability to rapidly change properties under magnetic influence, making them useful in vibration control systems for vehicles, medical devices, and civil engineering structures. Common parametric models, such as Bouc-Wen and Bingham, are traditionally employed to model MR damper dynamics behavior. However, the manual tuning of numerous parameters in these models increases complexity and hinders the identification of inverse models, potentially leading to unpredictable optimum target forces. In response to these challenges, this study suggested a non-parametric approach using Long Short-Term Memory (LSTM) models to predict the optimum target force of MR dampers. Unlike parametric models, LSTM models capture dynamic behavior without the need for extensive manual tuning. To optimize the LSTM model, Particle Swarm Optimization (PSO) is employed to fine-tune hyperparameter values, ensuring robust performance. The proposed non-parametric method, specifically the PSO-LSTM model, demonstrates faster processing times compared to traditional parametric approaches. The proposed model produced an accurate damping force prediction with a root mean square error of less than 5%, This novel approach simplifies the modeling process and offers an efficient and precise alternative to traditional parametric methods.
Optimization method for multi-process energy consumption in iron and steel enterprises under the coordinated use of comprehensive energy
Authors: Zhao Pengxiang , Yang Jialin , Li Zhen , Zhou Bing 
Published: March 2024

Abstract
Sustainable development goals, such as energy conservation, emission reduction, cost reduction, and efficiency enhancement, present pressing challenges for the iron and steel industry. Process optimization technology for efficient production, energy conservation, and consumption reduction in the steel manufacturing process is based on the coordination of material and energy flow. Therefore, this article takes the production process of a converter steelmaking plant as the object, considers the regulatory requirements of multi-process and multi constraint operation optimization under the cooperation of production organization and energy conservation and consumption reduction, and it explores a production scheduling optimization method for steelmaking plants oriented towards material flow and energy flow synergy. Based on the characteristics of the problem space, this study suggests a hybrid genetic algorithm with local search (MOHGALS) that employs both standard and advanced evolution techniques. Tests on concrete problems demonstrate that the MOHGALS approach yields a superior set of multi-objective Pareto schemes. Additionally, random-generated test cases were used to evaluate the algorithm’s performance. The outcomes show that MOHGALS performs better than competing algorithms on multi-objective evaluation indicators, and that the suggested improved evolution approach may effectively boost the algorithm’s performance.
Modeling and Control Strategies for Flight Service Vehicle Queue Behavior in Non Cooperative Games
Authors: Wang Sibo , Hao Shougang , Zhang Ping , Ou Jian , Zhang Tao , Wen Tao 
Published: March 2024

Abstract
From the perspective of the running process for service vehicles, based on the analysis of the benefits maximization of the special needs vehicles joining the queue as the scheduling goal, and aiming at the shortcomings of traditional task scheduling strategies, methods and models, a non-cooperative game behavior optimization scheduling model with security, economy and environmental protection as the optimization goals was proposed by using game theory. At the same time, the vehicle service capability, service times and import Angle are limited to ensure that the model is more in line with the actual operation scenario. In order to judge the deviation between the game result and the actual operation, the game efficiency matrix is constructed, and Nash equilibrium is used to prove that the model has an equilibrium point. On the basis of the game model, the strategy layer, the game layer and the optimization layer are divided into queue behavior control strategy methods. Finally, this paper verifies the feasibility of the model by using the actual parameter changes to determine the best parameter combination suitable for the model.
Simulation Analysis of Metallic Particles Movement in Typical Structure of Oil-immersed Power Transformer
Authors: Zheng Shuyu , Zhao Jianeng , Shao Hongping , Cheng Chuanhui , Zhuo Ran , Huang Zhiming 
Published: March 2024

Abstract
The insulation performance of oil-immersed power transformers is closely involved with the movement of metal particle impurities, and the movement characteristics of metal particles are not only influenced by the electric field, but also by the oil flow. In this paper, a solid-liquid two-phase flow simulation model was constructed, and the effect of electric field on the motion of metal particles was considered. Firstly, the validity of the simulation model was verified by using the experimentally observed motion of metal particles in the horizontal oil channel between parallel flat plate electrodes, based on which the motion of metal particles in the typical oil channels of a 500kV power transformer was studied. It was found that when the metal particles passed through the oil flow inlet, the number of metal particles settling increased with the increase of particle size. All the metal particles with 1mm particle size sank in the oil flow inlet during the oil migration process, it was almost impossible to enter the low, medium and high voltage winding parts. Through the middle or upper end of the high voltage winding, the smaller particles (50μm, 150μm) would easily migrate with the oil flow and move faster; the larger particles (500μm) would move slower or be more easily deposited. This research holds significant practical implications in the engineering study of metal particle motion distribution within transformers.
Research on the Green Environmental Protection Method of Automatic Potentiometric Titration of Organic Heat Transfer Fluids Acid Number
Authors: Kong Dexin , Jin Dong , Zhou Yi , Jiang Lina , Guo Linyuan 
Published: March 2024

Abstract
This paper presents the concept and importance of acid number. Improvement method is based on the GB / T 7304-2014 “Standard test method for acid number of petroleum products by Potential Titration”. The detection and study of the acid number are obtained by halving sample volume in two categories—used and unused heat transfer fluids. This article studies and establishes a green and environmentally friendly method for automatic potentiometric titration of organic heat carrier acid value, which uses a smaller sample volume and titration solution volume to achieve fast, environmentally friendly, intelligent, and efficient results. The experimental results show that after halving the sample volume, the data reproducibility is relatively high, but still within the standard reproducibility range, and data of the heat transfer fluids is far less than the standard reproducibility range. Through this paper, the acid number of heat transfer fluids is able to be strictly controlled and timely monitored to ensure the safety, green environment development and operation of boilers and systems.
Lift System Design of Air Cushion Vehicle
Authors: Zhang Zongke , Fan Jingfeng , Chen Yuxi , Zhang Genquan , Wu Chengjie 
Published: March 2024

Abstract
Lift system plays key role to Air Cushion Vehcile overall performance, whose design includes cushion flow demanding analysis, lift fan design, airflow distribution and pressure control. The method to calculate cushion flow exit velocity variation with craft speed was firstly presented based on cushion induced wave. Through application development in CATIA, a full solution was presented to check if craft keeps in safety flight boundary at maximum calm water speed. Through analysis, current cushion flow demanding method based on statistic former ACVs seems conservative for particular ACV with super high cushion density, which was adviced to decrease by 10%∼15%. New double discharge lift fan for polar hovercraft was developed through CFD simulation, model test, full-scale utilizing. To reach designed bag-cushion pressure ratio, polar ACV model skirt feed holes was added by 1/3 more than simple geometrical scale. Larger bag feed holes and lower bag-cushion pressure ratio are effective means to lower lift power.
Role of Cl/F Ions Concentration, pH and Temperature on Pitting Corrosion Behavior of 2507 Duplex Stainless Steel
Authors: Liu Xuedong , Zhu Xianghong , Liu Zhenguang , Wang Yiming , Zhai Yangdong 
Published: March 2024

Abstract
In the chemical industry, 2507 duplex stainless steel is usually used for the pipes of absorption tower. The residual F− and Cl− in the tail gas could aggregate in the clean solution of ammonium hydroxide, which causes the risk of pitting corrosion. In this study, the role of Cl/F ions concentration, pH and temperature on the pitting corrosion of 2507 stainless steel is investigated by exposing to actual industrial ammonia desulfurization solution. The experimental results reveal that the 2507 stainless steel exposed the serious corrosion solution appears pitting corrosion problem. However, the 2507 stainless steel is free of pitting corrosion at the tested condition of pH value 3.59/5, temperature 80 °C/100 °C, and ion concentration 46375 ppm/80000 ppm. This study provides a fundamental data for the safety service of stainless steel used in chemical industry.
Electrical Characteristics of the Insulation Paper Modified by Nano-TiO2 under Electrical-Thermal Aging
Authors: Liu Daosheng , Lai Yongyao , Cui Chele , Noubissi Romaric Kammeugue 
Published: March 2024

Abstract
The research on the modified insulating paper by adding nano-materials has garnered increasing attentions. Scholars have investigated its performances under electrical aging or thermal aging, but there are few reports on its behaviors under electrical-thermal combined aging. In the laboratory, we prepared the modified insulating paper with different mass fractions of nano-TiO2, and subjected to 10-day accelerated electrical-thermal combined aging test. Samples were experimented at different aging stages to investigate the variations in AC breakdown field strength, relative permittivity and surface microstructure. The results demonstrate that the modified insulating paper samples exhibit better AC breakdown field strength, relative permittivity and other parameters compared to the unmodified samples. Among the modified samples, the one with 3% mass fraction of nano-TiO2 shows the best electrical properties and aging resistance under electrical-thermal combined aging. By adding an appropriate weight percentage of nano-TiO2, it was able to fill microscopic holes and gaps on the surface of the insulating paper, strengthen the connection between the cellulose fibers, and improve the electrical properties and aging resistance of the insulating paper.
Study on the Effect of Cleaning and Swelling Action of Cleaning and Repairing Agents on the Properties of Silicone Rubber
Authors: Xie Xiwei , Shi Jinbiao , Zhao Yueju , Chen Qiang , Deng Yu , Zhou Songsong , Liu Hui , Shen Hao 
Published: March 2024

Abstract
Silicone rubber composite materials are prone to fouling under outdoor conditions for a long time, leading to a decrease in hydrophobicity and even the occurrence of pollution flashover. Generally, the silicone rubber surface is cleaned and repaired with cleaning and repair agents, which can quickly restore its hydrophobicity to the factory state and even reach HC1. Under the action of cleaning and repairing agents, silicone rubber will undergo a certain swelling effect. This article conducts in-depth research on the impact of the cleaning and swelling effect of cleaning and repairing agents on the performance of silicone rubber. Research has found that this cleaning and repairing agent can significantly improve the surface hydrophobicity of silicone rubber. When silicone rubber is immersed in the cleaning and repairing agent for up to 10 hours, its surface undergoes swelling equilibrium, where the evaporation volume and swelling index remain unchanged. Through testing its mechanical properties, it was found that its tear resistance and fracture performance have been improved to a certain extent, with growth rates of 23.36% and 2.55%, respectively; Through electrical performance testing, it was found that its volume resistivity and dielectric strength were both improved to a certain extent, with volume resistivity and dielectric strength increased by 16.5% and 14.3%, respectively. Moreover, after reaching swelling equilibrium in the cleaning and repairing agent, the hydrophobicity of silicone rubber did not decrease, and it can still maintain HC1 for a long time, exhibiting good hydrophobicity.
Study on Mechanical Properties and Microstructure characteristics of Fly Ash Mixed Wet Shotcrete under Low Temperature Curing Environment
Authors: Liu Wei , Yin Shenghua , Hou Yongqiang , Zhang Minzhe 
Published: March 2024

Abstract
To systematically examine the mechanical properties and microstructure of fly ash-doped wet shotcrete under low-temperature curing conditions, experimental studies were conducted on the compressive strength. The investigations encompassed varying activator dosage, fly ash dosage, and curing temperature for a thorough examination of the material’s performance. The results show that the addition of activator can significantly improve the compressive strength of fly ash wet shotcrete under low temperature curing, but the optimal dosage of different activator types is not consistent. The selection of NaAlO2 as the activator has the most significant effect on the compressive strength of the samples. Under low temperature curing environment, the increase of curing age can also significantly improve the compressive strength of the sample, especially the early strength. The order of influence degree of three factors on compressive strength is that alkaline activator has the highest influence degree, curing temperature has the second, fly ash content has the least influence degree, and activator content is the significant influence factor of early compressive strength. A prediction model for the compressive strength of wet shotcrete doped with fly ash was established in the low temperature curing environment, and the effect of increasing the dosage of activator on the compressive strength of the sample increased with the decrease of curing temperature. With the increase of the content of activator and curing temperature, the size of the void structure in the sample is gradually reduced, which makes the density of the microstructure gradually increase, and thus improves the macroscopic compressive strength of the sample.
Preparation of Anti Mold Cleaning Agent and its Effect on the Performance of Insulation Materials
Authors: Wang Wenbo , Xie Xiwei , Shi Jinbiao , Zhao Yueju , Yang Xiaoyan , Xia Bing , Ma Huibo , Chen Qiang 
Published: March 2024

Abstract
A mold resistant cleaning agent with long-term cleaning function was prepared using hydroxyl silicone oil, mold inhibitors, and some additives as the main raw materials. The results show that the anti mold cleaning agent prepared by adding different proportions of anti mold agents not only ensures the cleaning and anti mold effects on the insulation material, but also has no significant impact on its mechanical properties, electrical properties, and surface hydrophobicity. Moreover, when the content of the anti mold cleaning agent is 2% to 3%, its comprehensive mechanical and electrical properties can maintain a good level. Through infrared analysis, it can be seen that during the mixing process of cleaning agent and anti mold agent, due to the consumption of some double bonds, the internal molecular structure of the cleaning agent has been changed, which not only has good cleaning effect but also excellent anti mold effect. When the amount of anti mold agent is 2%, the anti mold level of the insulation material is the best, reaching level 0, and the hydrophobicity can also reach HC1 after cleaning.