Article
Automation & Control Systems
Tongkun Cao, Zonggao Li, Siguo Zhang, Weifeng Zhang
Summary: In recent years, the challenge of meeting cutting lubrication requirements while minimizing the use of cutting fluid for environmental protection has emerged. To address this, novel cutting tools with micro textures were proposed, which transport the cutting fluid to the tool-chip contact using micro-pipes. Cutting tests on AISI 1045 steel were conducted and it was found that the tools with micro textures outperformed other tools, using significantly less cutting fluid than traditional flood lubrication. The TVT tool demonstrated the best overall performance, with the main lubrication mechanism being the widespread distribution of cutting fluids on the tool's rake face via the micro textures.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Marian Bartoszuk
Summary: This article presents an approximate model for determining the maximum temperature of the chip surface in dry orthogonal turning, based on experimental data. The results show good agreement between the model and experimental studies, with a discrepancy of maximum temperature values not exceeding 6.4%.
Article
Engineering, Electrical & Electronic
Qinghua Li, Chunlu Ma, Lintao Xie, Baizhong Wang, Shihong Zhang
Summary: In this paper, a coated composite micro-textured tool is introduced to study its influence on chip shape and cutting force under the same cutting parameters. The combination of cutting force and cutting temperature is optimized based on cutting test. Three kinds of composite micro-texture tools are tested to determine the optimum combination from the angle of chip shape, cutting temperature and cutting force. It was found that the chip was more easily broken in the composite microstructure when two tools were used, resulting in a decrease in cutting force and cutting temperature compared with non-micro-texture tools.
Article
Automation & Control Systems
Wei Zhang, Tongkun Cao
Summary: A new type of tool with continuous lubrication on the tool-chip contact interface was developed to enhance tool lubrication performance and minimize the use of cutting fluid. Through inner microchannels, atomized cutting fluid could be directly delivered to the tool-chip contact interface. Experiments were conducted to compare the new lubrication method with dry cutting and traditional Minimum Quantity Lubrication (MQL) cutting on 45 steel. Results showed that the tool with continuous lubrication reduced the main cutting force by 14.5% and 5.9%, decreased the friction coefficient by 14.2% and 9.8%, and reduced the tool-chip contact interface length by 35.4% and 19.1% compared to dry cutting and MQL cutting, respectively. The new lubrication method exhibited superior cutting fluid penetration and lubrication film formation on the tool-chip interface, resulting in reduced surface wear characterized by adhesive wear.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Polymer Science
Bin Yang, Hongjian Wang, Kunkun Fu, Chonglei Wang
Summary: In this study, an explicit finite element (FE) model was developed to predict cutting forces and chip morphologies of polymers. The model considered a dual fracture process, strain rate effect, and frictional behavior. Experimental results showed that the predicted fracture toughness, cutting forces, and chip morphologies were consistent with the experimental results. Parametrical analysis revealed that the friction coefficient had the greatest effect on cutting force.
Article
Engineering, Manufacturing
Zahra Barzegar, Emre Ozlu
Summary: This study introduces a novel model for predicting temperature in a cutting tool while considering the effects of all three deformation zones. The model uses a thermo-mechanical approach with a dual-zone friction model and Johnson-Cook constitutive model. Experimental results show good agreement between the model predictions and actual temperatures.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Review
Materials Science, Ceramics
Peicheng Mo, Jiarong Chen, Chao Chen, Haiqing Qin, Leyin Xiao
Summary: Polycrystalline cubic boron nitride (PCBN) materials were prepared by utilizing cBN, TiC, Ti, and Al as raw materials under high temperatures and pressures. The study investigated the effects of sintering temperature and holding time on the mechanical and cutting properties of PCBN materials. The results showed that the diffusion of metal atoms facilitated the rapid reaction between the binder and cBN, resulting in a dense composite material with excellent mechanical properties. The best cutting performance was achieved with a PCBN tool material prepared at 1500°C and a 12-minute holding time, exhibiting minimal tool wear of only 0.26 mm during a 10 km cutting length of cast iron.
CERAMICS INTERNATIONAL
(2023)
Article
Polymer Science
Alessandro Abena, Sein Leung Soo, Sabbah Ataya, Hany Hassanin, Mahmoud Ahmed El-Sayed, Mahmoud Ahmadein, Naser A. Alsaleh, Mohamed M. Z. Ahmed, Khamis Essa
Summary: This study conducted comprehensive experimental research using the design of experiments and analysis of variance (ANOVA) to investigate the effects of machining process parameters on chip formation mechanisms, machining forces, workpiece surface integrity, and damage in cutting unidirectional CFRP. The study identified the impact of chip formation mechanisms on fibre orientation and tool cutting angle, affecting fibre bounceback and damage depth. An analytical model based on response surface analysis was developed to predict machining forces, damage, surface roughness, and bounceback. ANOVA results indicated that fibre orientation had the most significant influence on CFRP machining. Optimized cutting parameters were determined to improve surface quality and reduce forces for different fibre angles.
Article
Automation & Control Systems
Xuelin Chen, Wen Shao, Jinyuan Tang, Bo Hu
Summary: This study investigates the thermomechanical behavior in the tool-chip interface (TCI) in ultrasonic vibration cutting (UVC) and proposes a transient model for cutting force taking into account the effect of acoustic softening and transient characteristics. Experimental data are consistent with predicted values, indicating that the ultrasonic vibration can significantly improve cutting performance, and its mechanisms are related to the coupling effect between cutting speed and ultrasonic vibration amplitude and feed rate.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Chemical
J. A. Lindner, M. G. Mueller, H. Briesen, P. Foerst
Summary: This paper presents a method for the experimental investigation of the coating process of a single freestream-fluidized particle by an infrared camera. The coating is dispersed by a nozzle with ultrasonic fluid atomization, allowing constant droplet size at different spray rates. The temperature of the fluidized particle was measured online by an infrared camera to monitor the coating process.
Article
Chemistry, Physical
Zakaria Ahmed M. Tagiuri, Thien-My Dao, Agnes Marie Samuel, Victor Songmene
Summary: This paper presents the development of a numerical model for predicting and studying the effects of tool nose geometries and its interactions with cutting parameters during orthogonal cutting of AISI 1045 steel. The interactions between the tool nose radius and the cutting parameters were found to affect mostly the cutting stress and, slightly, the tool wear rate. These interactions did not much influence the cutting temperature.
Article
Environmental Sciences
Guglielmo Grechi, Matteo Fiorucci, Gian Marco Marmoni, Salvatore Martino
Summary: This study proposed a method to generate rock mass point clouds combining optical and infrared thermal imaging data for describing temperature distributions and multitemporal surface temperatures. Despite the low resolution of the IR sensor, the 3D thermal point clouds showed high geometric accuracy, making them suitable for monitoring the thermal behavior of jointed rock masses.
Article
Engineering, Manufacturing
Faraz Akbar, Muhammad Arsalan
Summary: Significant temperature rise occurs in high-speed metal machining, especially in dry cutting. This study investigates the effects of uncoated, single layer coatings (TiN and TiAlN), and multilayer coatings on cutting tool material during dry cutting of AISI/SAE 4140 alloy steel. Various parameters such as cutting and feed forces, chip-tool contact area, chip thickness, heat partition ratio, flank wear, and shear angle are compared. The results show that the coatings act as a thermal barrier, reducing heat generation and improving surface finish, tool life, and efficiency.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2023)
Article
Materials Science, Multidisciplinary
Jinxin Wang, Dietrich Buck, Qi Tang, Jun Guan, Xueliang Zhou, Zhanwen Wu, Pingxiang Cao, Xiaolei Guo, Zhaolong Zhu
Summary: The machining properties of stone-plastic composite were evaluated through a finite element method, focusing on the effects of tool geometry and cutting parameters on cutting force, temperature, chip formation, von Mises stress, and surface quality. The study found that chip continuity increases with an increase in rake angle but decreases with cutting speed and depth. Cutting stability and surface quality are negatively correlated with cutting speed and depth but positively correlated with rake angle. These findings suggest that adopting cutting conditions with a greater rake angle, higher cutting speed, and shallower cutting depth can improve cutting performance in the finishing machining of stone-plastic composites.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Archaeology
P. Vazquez, C. Thomachot-Schneider
Summary: A fire can have devastating effects on the rocks of built heritage, both aesthetically and structurally. Non-destructive methods, such as infrared thermography, are used to assess the damage caused by fire. The thermal properties of stones, such as porosity and cooling kinetics, can be used as indicators of decay.
JOURNAL OF CULTURAL HERITAGE
(2023)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)