Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology最新文献

Stiffness model for pneumatic spring with air-diaphragm coupling effect 具有空气-膜片耦合效应的气动弹簧刚度模型

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-17 DOI: 10.1016/j.precisioneng.2024.11.008

Yumei Bai , Rongxing Liu , Jiulin Wu , Jixing Che , Mingkai Wu , Rui Zhou , Xuedong Chen , Lizhan Zeng , Wei Jiang

{"title":"Stiffness model for pneumatic spring with air-diaphragm coupling effect","authors":"Yumei Bai , Rongxing Liu , Jiulin Wu , Jixing Che , Mingkai Wu , Rui Zhou , Xuedong Chen , Lizhan Zeng , Wei Jiang","doi":"10.1016/j.precisioneng.2024.11.008","DOIUrl":"10.1016/j.precisioneng.2024.11.008","url":null,"abstract":"<div><div>An accurate pneumatic spring stiffness model is essential for achieving subhertz, quasi-zero stiffness vibration isolation in optical experiments, precision measurements, and semiconductor manufacturing involving heavy equipment. Conventional stiffness models for pneumatic springs with diaphragms often neglect the effect of the elastic diaphragm, making it difficult to accurately characterise pneumatic spring stiffness. This paper presents an innovative pneumatic spring stiffness model that incorporates the air-diaphragm coupling effect—a phenomenon in which the air and diaphragm interact synergistically to affect stiffness. The inclusion of this coupling effect alters the effective area and volume of the pneumatic spring, two critical parameters influencing stiffness. Detailed mechanical and geometrical derivations are provided to establish an accurate stiffness model. A modification coefficient is introduced to quantify the air-diaphragm coupling effect on stiffness, and various factors influencing this coefficient, as well as their impact on stiffness, are examined. An experiment was conducted to validate the proposed model, showing a relative error of less than 1.65 % between the experimental and theoretical results. Considering the air-diaphragm coupling effect, the absolute error approximation was reduced by an order of magnitude, and the relative stiffness decreased by 11.05 % and 8.26 % in Experiments 1 and 2, respectively. Owing to its high precision, the proposed model provides theoretical guidance for the engineering design of pneumatic springs and facilitates the accurate matching of quasi-zero stiffness vibration isolation systems for heavy equipment in ultra-precision applications.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 728-738"},"PeriodicalIF":3.5,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distance deviation sensitivity on null test of convex hyperboloid mirrors with large relative aperture 具有大相对孔径的凸双曲面反射镜无效测试的距离偏差灵敏度

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-17 DOI: 10.1016/j.precisioneng.2024.11.006

Shijie Li , Jiani Liu , Bingcai Liu , Ailing Tian , Sibo Niu , Lumin Zhao , Haitao Liu , Chunyan Shi , Jin Zhang , Haifeng Liang , Changlong Cai

{"title":"Distance deviation sensitivity on null test of convex hyperboloid mirrors with large relative aperture","authors":"Shijie Li , Jiani Liu , Bingcai Liu , Ailing Tian , Sibo Niu , Lumin Zhao , Haitao Liu , Chunyan Shi , Jin Zhang , Haifeng Liang , Changlong Cai","doi":"10.1016/j.precisioneng.2024.11.006","DOIUrl":"10.1016/j.precisioneng.2024.11.006","url":null,"abstract":"<div><div>In the shape measurement of convex hyperboloid mirrors with large relative apertures, alignment deviations can significantly affect the accuracy of null test results owing to their sensitivity, resulting in inaccurate results. This paper introduces autocollimation and compensation methods. Subsequently, a shape detection experiment of a large relative aperture convex hyperboloid mirror with a diameter of 15 mm was conducted using the aforementioned methods. Further, a detailed simulation analysis was performed to address the inconsistencies between the two test results. The results suggested that the Hindle sphere method was highly sensitive to distance deviation. Furthermore, the distances in the optical path exerted a complementary effect, which easily obscured the true surface shape of the measured part. The computer-generated hologram (CGH) method could accurately determine the true surface shape deviation based on the alignment judgment provided by the aligned CGH part. These studies provide scientific guidance for more accurately obtaining the true surface shape error of the hyperboloid mirror under test, and have significant engineering application value.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 707-715"},"PeriodicalIF":3.5,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid non-contact measurement of distance between two pins of flexspline in harmonic reducers based on standard/actual parts comparison 基于标准件/实际件对比，非接触式快速测量谐波减速器中挠性花键两针之间的距离

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-16 DOI: 10.1016/j.precisioneng.2024.11.007

Caitao Liu, YuGuo Cui, Dan Liang, Li Liu, JunQiang Lou

{"title":"Rapid non-contact measurement of distance between two pins of flexspline in harmonic reducers based on standard/actual parts comparison","authors":"Caitao Liu, YuGuo Cui, Dan Liang, Li Liu, JunQiang Lou","doi":"10.1016/j.precisioneng.2024.11.007","DOIUrl":"10.1016/j.precisioneng.2024.11.007","url":null,"abstract":"<div><div>In order to achieve rapid and precise measurement of distance between two pins of flexspline in harmonic reducers, an rapid non-contact measurement strategy based on standard/actual parts comparison is proposed. Firstly, to eliminate the installation eccentricity error of flexspline fixture, a sine-quadrant eccentricity error elimination method is designed. The sinusoidal curve and quadrant of the measured fixture eccentricity error with respect to the fixture rotation angle is used to calculate the eccentric error components along <em>x</em> and <em>y</em> axes, which has the advantages of simplicity and rapidity. Secondly, a Gaussian-Harmonic Wavelet Filtering (GHWF) algorithm is proposed to filter out the noise in the measurement process, which can effectively suppress the Gibbs phenomenon in harmonic wavelet transformation and improve the signal-to-noise ratio. Finally, an experimental platform including baseplate, turntable, flexspline, moving platform and laser sensor is constructed, in order to verify the performances of error elimination, noise filtering and distance measuring. Experimental results show that the measurement error of the proposed strategy is less than 7 μm, which is consistent with the accuracy obtained by the commercial high-precision gear measuring instrument. The average measurement time is about 29.6 s, much less than the 5 min of the commercial instrument, showing great application potential for the efficient distance measurement of gears and flexsplines.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 716-727"},"PeriodicalIF":3.5,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Based on domain adversarial neural network with multiple loss collaborative optimization for milling tool wear state monitoring under different machining conditions 基于域对抗神经网络的多损失协同优化，用于监测不同加工条件下的铣刀磨损状态

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-14 DOI: 10.1016/j.precisioneng.2024.11.005

Qiang Liu , Jiaqi Liu , Xianli Liu , Jing Ma , Bowen Zhang

{"title":"Based on domain adversarial neural network with multiple loss collaborative optimization for milling tool wear state monitoring under different machining conditions","authors":"Qiang Liu , Jiaqi Liu , Xianli Liu , Jing Ma , Bowen Zhang","doi":"10.1016/j.precisioneng.2024.11.005","DOIUrl":"10.1016/j.precisioneng.2024.11.005","url":null,"abstract":"<div><div>In machining, it is crucial to monitor the tool wear status in real time to guarantee the quality of the workpiece being machined. Tool wear monitoring technology mainly reflects the tool state through the physical signals generated during the machining. At present, the technology faces many challenges in practical applications. When facing different machining scenarios, the model is difficult to adapt to new machining scenarios. Therefore, this study proposes a method to monitoring the tool wear state under different machining conditions based on Domain Adversarial Neural Network with multiple loss collaborative optimization (MLCODANN). This method takes the domain adversarial neural network as the framework and uses a multiple loss collaborative optimization method to adjust the optimization direction of the loss. It avoids the problem of conflict between the domain alignment and the classification loss, improves the convergence of model loss. In addition, this study used ResNet18 as a feature extraction network to extract features of the cutting signal. Meanwhile, the horizontal and vertical convolutional kernels <span><math><mrow><mn>1</mn><mo>×</mo><mi>k</mi></mrow></math></span> and <span><math><mrow><mi>k</mi><mo>×</mo><mn>1</mn></mrow></math></span> are used instead of the convolutional kernel <span><math><mrow><mi>k</mi><mo>×</mo><mi>k</mi></mrow></math></span>, which reduces model parameters and training time the and improves the model performance. Finally, through comparative experiments, it is proved that MLCODANN model has high accuracy in recognizing tool wear state under different machining conditions.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 692-706"},"PeriodicalIF":3.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of angle-gradient echelle grating on metallic glass using shaped vibration cutting with time-varying trajectory 利用具有时变轨迹的异形振动切割在金属玻璃上制作角梯度梯度光栅

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-12 DOI: 10.1016/j.precisioneng.2024.11.002

Wei Dai , Pingfa Feng , Zhimeng Chen , Feng Feng , Mengying Luan , Jianjian Wang

{"title":"Fabrication of angle-gradient echelle grating on metallic glass using shaped vibration cutting with time-varying trajectory","authors":"Wei Dai , Pingfa Feng , Zhimeng Chen , Feng Feng , Mengying Luan , Jianjian Wang","doi":"10.1016/j.precisioneng.2024.11.002","DOIUrl":"10.1016/j.precisioneng.2024.11.002","url":null,"abstract":"<div><div>In order to solve the problem of narrow band coverage of traditional infrared gratings, a new type of diffraction grating is invented and named as angle-gradient echelle grating. The blaze angle of the grating gradually changes along the direction of the grating grooves, which can be regarded as etching countless sub-gratings with different blaze angles on a grating, breaking the limitation of the number of blaze angles of traditional gratings. In addition, in order to solve the processing problem of angle-gradient echelle grating, a new processing method, shaped vibration cutting (SVC) with a time-varying trajectory is developed. By exploring the influence of different processing parameters on the grating processing results, a suitable processing plan was proposed. Eventually, angle-gradient echelle grating with blaze angles varying from 30° to 55° and surface roughness of as low as 20 nm was fabricated on metallic glass, a material that is difficult to machine.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 678-691"},"PeriodicalIF":3.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinematics modeling and trajectory optimization for precision grinding of variable-parameter helical grooves 可变参数螺旋槽精密磨削的运动学建模和轨迹优化

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-10 DOI: 10.1016/j.precisioneng.2024.10.015

Yong Li , Guofu Ding , Zhihui Yang , Changjiu Xia , Zhe Liu , Lei Jiang

{"title":"Kinematics modeling and trajectory optimization for precision grinding of variable-parameter helical grooves","authors":"Yong Li , Guofu Ding , Zhihui Yang , Changjiu Xia , Zhe Liu , Lei Jiang","doi":"10.1016/j.precisioneng.2024.10.015","DOIUrl":"10.1016/j.precisioneng.2024.10.015","url":null,"abstract":"<div><div>End mills with variable helix angles in a certain range can suppress the cutting vibration, and the change of the core radius can improve the cutting rigidity and realize the best match between the rigidity and the chip removal performance. However, the existing process cannot accurately realize the continuous variable helix angle along the cutting edge. Moreover, the change in helix angle and core radius increases the difficulty of calculating the grinding trajectory and makes it difficult to control the rake angle accurately, and that results in the performance of this end mill cannot be accurately guaranteed. Therefore, this paper proposed a kinematics modeling and trajectory optimization method for the precision grinding of variable-parameter helical grooves. Firstly, a general grinding kinematics model is established by geometric analysis. Secondly, with the rake angle, helix angle, and core radius as constraints, models are constructed to solve the location and direction parameters of the grinding wheel. Then, the calculation and optimization method of the grinding trajectory for variable-parameter helical grooves is developed. Finally, the experimental verification is carried out and the results show that the maximum rake angle error is 0.09°, the maximum helix angle error is 0.08°, and the maximum core radius error is 0.053 mm. It indicates the grinding kinematics model and the trajectory optimization are correct. This process can also be used to grind complex helical grooves on custom cutting tools such as drills and screw taps.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 644-659"},"PeriodicalIF":3.5,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of ultrasonic vibration-assisted milling technology 超声波振动辅助铣削技术回顾

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-09 DOI: 10.1016/j.precisioneng.2024.10.021

Ang Li , Xuewei Zhang , Jianbo Chen , Ting Shi , Lu Wen , Tianbiao Yu

{"title":"Review of ultrasonic vibration-assisted milling technology","authors":"Ang Li , Xuewei Zhang , Jianbo Chen , Ting Shi , Lu Wen , Tianbiao Yu","doi":"10.1016/j.precisioneng.2024.10.021","DOIUrl":"10.1016/j.precisioneng.2024.10.021","url":null,"abstract":"<div><div>Compared with the conventional milling technology, the ultrasonic vibration-assisted milling technology has better machining performance for hard-to-machine materials. With the progress of ultrasonic generators and ultrasonic transducers, the research of the ultrasonic-assisted milling technology has been developed rapidly. Correspondingly, new design requirements and theoretical concepts are proposed to meet the high-performance requirements of manufacturing complex structures with hard-to-machine materials. There are few comprehensive reviews about the ultrasonic vibration-assisted milling technology. Therefore, we present the first comprehensive review of the advantages, the basic principles, the historical research progress, the cutting tools, the workpiece material properties and the cutting characteristics of the ultrasonic vibration-assisted milling technology to lay a foundation for the related research. In addition, the shortcomings of the existing theories and the outlook for future research directions are also discussed.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 601-616"},"PeriodicalIF":3.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An integrated hot embossing and thermal reflow method for precision manufacture of plano-convex glass microlens arrays 用于精密制造平凸玻璃微透镜阵列的集成热压印和热回流方法

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-11-04 DOI: 10.1016/j.precisioneng.2024.11.001

Gao Yang , Kang Yang , Jianzhi Li , Chi Fai Cheung , Feng Gong

{"title":"An integrated hot embossing and thermal reflow method for precision manufacture of plano-convex glass microlens arrays","authors":"Gao Yang , Kang Yang , Jianzhi Li , Chi Fai Cheung , Feng Gong","doi":"10.1016/j.precisioneng.2024.11.001","DOIUrl":"10.1016/j.precisioneng.2024.11.001","url":null,"abstract":"<div><div>Plano-convex glass microlens arrays (MLAs) have broad applications in imaging, sensing, illumination, and communication systems. This paper proposed a three-step method to precision manufacture of plano-convex glass MLAs, which involves fabrication of SiC microhole arrays (MHAs), hot embossing of glass micropillar arrays (MPAs) and thermal reflow of glass MLAs. The effects of embossing temperature, force, and time on the replication accuracy of glass MPAs are evaluated. Subsequently, the glass MPAs with decent replication accuracy were subjected to thermal reflow experiments for studying the effects of reflowing temperature and reflowing time on the geometric features of formed glass MLAs. It is found that the height and tip curvature of reflowed glass microlenses can be controlled by adjusting the reflowing temperature and time. The warpage amplitudes and mean birefringence of most reflowed glass substrates are less than 5 μm and 27 nm/cm, respectively. Furthermore, the reflowed glass microlens arrays shows a decent uniformity in an area with a diameter of ∼4 mm. Finally, the feasibility of the integrated hot embossing and thermal reflow method in producing glass nano-lens arrays is also demonstrated. As a result, the hybrid forming technology that combines hot embossing with thermal reflow not only avoids the difficulties of fabrication of MLA and NLA mold inserts, but also possesses the advantages of high efficiency and low cost, which is expected to be a promising mass production technology for glass micro/nano-lens arrays.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 587-600"},"PeriodicalIF":3.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and testing of a two-axis surface encoder with a single Littrow configuration of a first-order diffraction beam 使用一阶衍射光束的单利特罗配置设计和测试双轴表面编码器

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-10-31 DOI: 10.1016/j.precisioneng.2024.10.019

Yifan Hong, Ryo Sato, Hiraku Matsukuma, Wei Gao

{"title":"Design and testing of a two-axis surface encoder with a single Littrow configuration of a first-order diffraction beam","authors":"Yifan Hong, Ryo Sato, Hiraku Matsukuma, Wei Gao","doi":"10.1016/j.precisioneng.2024.10.019","DOIUrl":"10.1016/j.precisioneng.2024.10.019","url":null,"abstract":"<div><div>A simple but effective optical design is proposed to expand the measurement range of a surface encoder in the out-of-plane <em>Z</em>-direction, which had been much shorter than that in the in-plane <em>X</em>-direction. A zeroth-order and a first-order diffraction beams generated at a transparent grating are projected onto a parallelly aligned scale grating. The reflected zeroth-order beam from the scale grating interferes with a beam from a reference plane mirror for the <em>Z</em>-directional measurement over an expanded range of 13 mm. A single Littrow configuration is established for the first-order diffraction beam to travel to and from the scale grating on the same path so that it can interfere with the reflected zeroth-order beam for the <em>X</em>-directional measurement regardless of the <em>Z</em>-position of the scale grating. A prototype sensor is constructed for demonstrating the effectiveness of the proposed optical design for expansion of <em>Z</em>-range. Uncertainty analysis on the measurement results is also conducted.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 577-586"},"PeriodicalIF":3.5,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An in-depth analysis of MWCNTs and graphene nanofluids-based EDM: Investigating surface integrity in Inconel 825 superalloy 深入分析基于 MWCNT 和石墨烯纳米流体的放电加工：调查 Inconel 825 超合金的表面完整性

IF 3.5 2区工程技术

Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology Pub Date : 2024-10-30 DOI: 10.1016/j.precisioneng.2024.10.018

Pankaj Sharma , Vishal Singh , Manoj Kumar Sinha

{"title":"An in-depth analysis of MWCNTs and graphene nanofluids-based EDM: Investigating surface integrity in Inconel 825 superalloy","authors":"Pankaj Sharma , Vishal Singh , Manoj Kumar Sinha","doi":"10.1016/j.precisioneng.2024.10.018","DOIUrl":"10.1016/j.precisioneng.2024.10.018","url":null,"abstract":"<div><div>The current study systematically explores the potential of nanofluids (NFs) as dielectric media in EDM to enhance the surface integrity of Inconel 825. To achieve this objective, applying nanofluids involves ensuring uniform dispersion of nanoparticles, specifically emphasising efficient heat dissipation, thereby aligning EDM processes. This investigation focuses on utilising MWCNTs NFs, graphene NFs, and hybrid NFs (maintaining a 1:1 ratio of nanoparticles) with a hydrocarbon-based EDM oil as the base fluid. This study marks a pioneering attempt to implement these NFs in the EDM process for Inconel 825. Comprehensive characterizations of NFs have been conducted before their application in the EDM process. These have included assessments of hydrodynamic diameter, zeta potential, dynamic viscosity, thermal conductivity, and breakdown voltage. A comparative analysis has been performed between the outcomes of NFs-based EDM and conventional EDM (using EDM oil). The results show that using graphene NFs, followed by MWCNTs NFs and hybrid NFs, improves thermal conductivity and stability during the EDM process. This results in an enhanced material removal rate and better surface roughness. In-depth examinations of surface irregularities, surface microcracks, recast layer thickness, and grain orientation are carried out using scanning electron microscopy and electron backscattered diffraction. Moreover, residual stress and microhardness are systematically determined to gain further insights into surface integrity. The results indicate that the comparatively higher dispersion of graphene within base dielectric fluid provided better surface integrity for ED-machined parts.</div></div>","PeriodicalId":54589,"journal":{"name":"Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology","volume":"91 ","pages":"Pages 546-558"},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0