Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture最新文献_第10页

A comparative analysis between backpropagation and general regression neural networks to predict the tensile properties of fused filament fabricated parts 预测熔融长丝制造部件拉伸性能的反向传播和一般回归神经网络对比分析

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-16 DOI: 10.1177/09544054231221834

Steffany N. Cerda-Avila, H. I. Medellín-Castillo, J. Cuevas-Tello

{"title":"A comparative analysis between backpropagation and general regression neural networks to predict the tensile properties of fused filament fabricated parts","authors":"Steffany N. Cerda-Avila, H. I. Medellín-Castillo, J. Cuevas-Tello","doi":"10.1177/09544054231221834","DOIUrl":"https://doi.org/10.1177/09544054231221834","url":null,"abstract":"The Fused Filament Fabrication (FFF) process comprises a large number of process parameters that affect the resultant mechanical properties of the parts, generating uncertainties during the Design for Additive Manufacturing (DfAM) practice. Several studies have used Artificial Neural Networks (ANN) based on classification machine learning techniques such as Backpropagation Neural Network (BPNN), to evaluate the dimensional accuracy, surface roughness, compressive, flexural and tensile strength of FFF parts. As an alternative, in this paper a new General Regression Neural Network (GRNN) approach, based on a regression machine learning technique, is proposed to estimate the tensile structural properties of polylactic acid (PLA)-FFF parts using variable process parameters. The performance of the new proposed GRNN is compared with the performance of a BPNN. The comparison and evaluation are based on their capability to accurately predict the experimental Ultimate Tensile Stress (UTS) and the Elastic Modulus ( E) of FFF parts. The outcomes of this evaluation have shown that although the GRNN and the BPNN are able to estimate with high accuracy the structural behaviour of FFF parts, the performance of the proposed GRNN is superior (0.001 Mean Square Error, MSE) than the BPNN (0.0031 MSE). Moreover, the new proposed GRNN fits the experimental test values with a minimal average error of 0.62%. Thus, the proposed GRNN can be used during the design of components intended to be manufacture by FFF.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139528323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dynamic analysis and energy consumption modeling of a composite spindle with active magnetic bearings for a sustainable manufacturing 带主动磁轴承的复合主轴的动态分析和能耗建模，促进可持续生产

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-16 DOI: 10.1177/09544054231222429

Salwa Benali, Anoire Ben Jdidia, T. Hentati, S. Bouaziz, M. Haddar

{"title":"Dynamic analysis and energy consumption modeling of a composite spindle with active magnetic bearings for a sustainable manufacturing","authors":"Salwa Benali, Anoire Ben Jdidia, T. Hentati, S. Bouaziz, M. Haddar","doi":"10.1177/09544054231222429","DOIUrl":"https://doi.org/10.1177/09544054231222429","url":null,"abstract":"Modern life is marked with the extensive use of machine tools. The latter stand for high consumers of electrical energy which increase carbon emissions. For this reason, various solutions aiming to reduce energy consumption in industrial sector are elaborated. One solution lies in the use of economical materials for the spindle rotation system supported by active magnetic bearings (AMBs), which corresponds to a problem that has never been undertaken so far. A new conception for machine tool spindle rotation system is elaborated for sustainable design. The spindle material is composed of a carbon epoxy hollow shaft wrapped with a steel layer and supported by AMBs. A Finite Element Method (FEM) modeling of the spindle rotation system was carried out to assess its dynamic consumed energy and power during the acceleration and cutting phases. For an accurate estimation, the power consumed by the spindle system was calculated taking into account the dynamic behavior of the cutting force and losses generated by the bearings. A comparison between energies consumed by the proposed spindle system and the steel spindle system was enacted.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139528712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Characteristics and improvement of the double-pass electro-chemical discharge machining 双通道电化学放电加工的特点与改进

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-13 DOI: 10.1177/09544054231222049

S. Elhami Joosheghan, P. Rezvani, Mohammad Reza Razfar

{"title":"Characteristics and improvement of the double-pass electro-chemical discharge machining","authors":"S. Elhami Joosheghan, P. Rezvani, Mohammad Reza Razfar","doi":"10.1177/09544054231222049","DOIUrl":"https://doi.org/10.1177/09544054231222049","url":null,"abstract":"Glass and ceramics have broad applications in modern industries; however, unique properties such as brittleness, and low machinability limit their fabrication processes. This way, electro-chemical discharge machining (ECDM) is a new method that can shape hard, brittle, and non-conductive materials. ECDM improvement is the subject of recent investigations through the application of chemical and physical phenomena. Current research studies the accuracy and surface integrity (cracks and HAZ) aspects of the double-pass ECDM process (DP) which is a new and straightforward method. During the double-pass process, two sequential passes are employed to shape the final geometry. In addition, the variable voltage technique is studied to achieve higher machining efficiency in DP. Results showed that in the diameter difference of 100 µm, the double-pass process reduced overcut by up to 21% compared to the typical ECDM process. Also, the size and number of cracks and the extent of HAZ were significantly decreased. Finally, in the diameter difference larger than 300 μm (the constant voltage of 32 V), the enhancement modification (variable voltage) reduced the overcut by more than 80%. At the same time, depth results remained close (less than 5% difference) to the simple ECDM process.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Machining-induced residual stress and deformation during Mg–Li alloy thin-walled rib-web parts milling 镁锂合金薄壁筋网状零件铣削过程中的加工诱发残余应力和变形

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-13 DOI: 10.1177/09544054231222050

Zhijun Chen, Lingyun Qian, Xiaoyuan Ji, Qingdong Zhang, Tengbowen Wei, Jingju Chen, Sufeng Hao

{"title":"Machining-induced residual stress and deformation during Mg–Li alloy thin-walled rib-web parts milling","authors":"Zhijun Chen, Lingyun Qian, Xiaoyuan Ji, Qingdong Zhang, Tengbowen Wei, Jingju Chen, Sufeng Hao","doi":"10.1177/09544054231222050","DOIUrl":"https://doi.org/10.1177/09544054231222050","url":null,"abstract":"The deformation of thin-walled parts based on the lightweight Mg–Li alloy materials caused by machining-induced stress is an important factor hindering the further development of lightweight in the aerospace field. Prediction of the machining-induced residual stress is the key to understand the deformation and derive low-stress machining scheme. In this study, the equivalent cutting deformation loads were applied to substitute the strongly coupled thermal-mechanical behavior between the tool and part to realize the prediction of the machining-induced stress and deformation of thin-walled rib-web part under different milling conditions. The local regular and complex rib-web parts share a same deformation mode, both behave as in-plane bending deformation of the machined surface. The low-stress milling scheme of up milling combined with cryogenic cooling obtained based on the local regular four rid-web thin-walled part was applicable to the prediction of the complex Mg-Li alloy disk rib-web part. Compared with the initial scheme, the maximum stress and deformation displacement based on the low-stress scheme were reduced from 80 to 36 MPa and from 0.04060 to 0.00814 mm, respectively. Finally, the effectiveness of low-stress milling scheme were verified based on the milling and measurement experiments of the complex thin-walled disk rib-web part. These results indicate the effectiveness of the modeling method for thin-walled rib-web parts and prove the results obtained based on the local model can be extended and applied to large complex parts with the same structural type.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Optimal design of the response surface for the root cutting of a hydroponic lettuce harvesting tool 水培生菜收割工具切根响应面的优化设计

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-09 DOI: 10.1177/09544054231222046

Guohua Gao, Zhi Li, Zihua Zhang, Xiaofei Lu, Shaoyu Zhai, Zhenjiang Zhu

{"title":"Optimal design of the response surface for the root cutting of a hydroponic lettuce harvesting tool","authors":"Guohua Gao, Zhi Li, Zihua Zhang, Xiaofei Lu, Shaoyu Zhai, Zhenjiang Zhu","doi":"10.1177/09544054231222046","DOIUrl":"https://doi.org/10.1177/09544054231222046","url":null,"abstract":"A new type of continuous harvester is designed to address the problems of high labor cost and low efficiency in the process of harvesting lettuce in greenhouse hydroponics. The designed harvester is mainly composed of three parts, namely, reciprocating cutter, driving mechanism, and belt conveyor. The response surface method is used to establish the mathematical model between the force acting on the lettuce roots and the reciprocating speed of the cutter, the inclination angle of the cutter, and the conveying speed of lettuce. The reliability of the mathematical model is verified, and the optimal parameter combination of the force on the lettuce root is obtained. Considering the actual harvesting method, the destruction rate, damage rate, and success rate of lettuce are used as the design indexes in the experiment. Results showed that the force on the lettuce stem is the smallest under the optimal parameter combination of the reciprocating motion speed of the cutting blade (100 mm/s), the inclination angle of the cutting blade (2.31°), and the conveying speed of the lettuce (64.49 mm/s). When the minimum force is 1.91 N, the destruction rate of lettuce harvest is 1.85%, the damage rate of lettuce is 3.71%, and the success rate of lettuce harvest is 94.44%. This study offers a potential solution for the automatic harvesting of hydroponic lettuce in a greenhouse.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139444234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Comparison of joining hole making methods for fiber reinforced FDM 3D printing parts 纤维增强型 FDM 3D 打印部件连接孔制作方法的比较

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-09 DOI: 10.1177/09544054231223265

Wei Lv, Xuda Qin, Zhengwei Bao, Wenchao Guo, Xianming Meng, Hao Li

{"title":"Comparison of joining hole making methods for fiber reinforced FDM 3D printing parts","authors":"Wei Lv, Xuda Qin, Zhengwei Bao, Wenchao Guo, Xianming Meng, Hao Li","doi":"10.1177/09544054231223265","DOIUrl":"https://doi.org/10.1177/09544054231223265","url":null,"abstract":"In this paper, continuous fiber reinforced plastic composite fused deposition modeling (FDM) 3D printing and conventional material removal processing methods were combined to investigate the effects of hole-making methods (printing, drilling and helical milling) and fiber filling patterns (solid pattern and rhombic grid pattern) on the quality and mechanical properties of joining holes in printed parts. This study evaluated the cutting forces during hole machining and assessed hole quality based on defect analysis, diameter accuracy, roundness error, and wall morphology, complemented by cost comparisons. It was observed that holes manufactured by conventional material removal methods were of better quality, but were also more costly. Tensile tests were conducted on the bolted joint structures to evaluate the mechanical properties of the joining holes, and scanning electron microscopy (SEM) examinations were performed on the cross-sections of bolted joints to analyze the tensile damage patterns. It was found that helical milled holes exhibit unique damage patterns and greater ultimate tensile displacements due to the existence of fibers directly involved in load bearing at the hole walls. This leads to a significant increase in energy absorption performance. The tensile properties of the structures consisting of specimens with a fiber filling angle of 0°/90° were superior to those with a fiber filling angle of 45°/135°. Additionally, the mechanical properties were found to be slightly better using the rhombic grid pattern than the solid pattern for the same fiber filling density and fiber filling angle. These findings provide valuable insights into the choice of preparation methods for joining holes in 3D printed parts to achieve optimal performance in a variety of engineering applications.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139445215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Digital twins for hand gesture-guided human-robot collaboration systems 手势引导人机协作系统的数字双胞胎

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-09 DOI: 10.1177/09544054231223783

Ao Liu, Yifan Zhang, Yuan Yao

引用次数: 0

Thermal error compensation for a fluid-cooling ball-screw feed system 流体冷却滚珠丝杠进给系统的热误差补偿

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-05 DOI: 10.1177/09544054231210963

Yan Li, Jiabo Fan, Yuan Zheng, Feng Gao, Wenqiang Li, Chenfei Hei

{"title":"Thermal error compensation for a fluid-cooling ball-screw feed system","authors":"Yan Li, Jiabo Fan, Yuan Zheng, Feng Gao, Wenqiang Li, Chenfei Hei","doi":"10.1177/09544054231210963","DOIUrl":"https://doi.org/10.1177/09544054231210963","url":null,"abstract":"Thermal deformation resulted from the heat generated by the motor and the frictional behavior between the moving pairs significantly reduces the positioning accuracy of feed systems and thus influences the machining quality of parts. The internal cooling ball screw takes advantage of the cooling liquid to strengthen the convection heat transfer actively and suppress the temperature rise. Owing to the intermittent starting and stopping operation modes of the cooling machine, the heat flux arising from various heat sources cannot be completely removed by the coolant; consequently, thermal errors still exist. In this study, K-means++ clustering and correlation analyses were used to select thermal key points. A difference equation model of the thermal error was established to describe the transient change relationship between the temperatures of the thermal key points and the ball-screw shaft elongation, which was separated from the thermal characteristic experimental data according to the linear superposition principle of geometric and thermal errors to constitute the positioning error. The model parameters were identified using the least-squares method, and a thermal error compensation strategy based on the origin offset method was implemented. Experiments comparing the thermal error compensation of the three models under different working conditions were conducted to confirm that the thermal error difference equation model can be applied to reduce the thermal error of the feed system effectively and maintain excellent robustness.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139381870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Modeling and balancing of parallel U-shaped assembly line based on improved genetic algorithms 基于改进遗传算法的并行 U 型装配线建模与平衡

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-04 DOI: 10.1177/09544054231214009

Yuling Jiao, Lujiao Huang, Binjie Xu, Yang Wang, Xinyue Su

引用次数: 0

A new laser remelting strategy for direct energy deposition of 316L stainless steel 用于 316L 不锈钢直接能量沉积的新型激光重熔策略

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2024-01-04 DOI: 10.1177/09544054231222047

Hailin Nie, Hang Liu, Chao Wang, Yuru Wu, Shimin Zhu, Jun Luo

{"title":"A new laser remelting strategy for direct energy deposition of 316L stainless steel","authors":"Hailin Nie, Hang Liu, Chao Wang, Yuru Wu, Shimin Zhu, Jun Luo","doi":"10.1177/09544054231222047","DOIUrl":"https://doi.org/10.1177/09544054231222047","url":null,"abstract":"At present, components produced by Direct energy deposition (DED) still have many shortcomings, such as rough surfaces, many internal pores, and the formation of long columnar grains that will lead to anisotropy due to large temperature gradients. Laser remelting (LR) is an effective method to improve the top surface quality and densification of samples. In the present work, in the process of manufacturing 316L stainless steel samples with DED, an additional LR process without powder conveying is added after each deposition layer of the samples is deposited. The smoothness of the sample surface has been greatly improved, and the density of the samples has been increased to nearly fully dense. The number and size of pores inside the samples are significantly decreased. By changing laser power and spot size, the effect of the LR process with different energy densities on microstructure and mechanical properties was studied. After the LR process, the coarse and long columnar grains in samples are transformed into fine equiaxed grains and fine columnar grains. Experimental results show that the LR process with appropriate energy density can reduce the residual stress of the samples made by DED and significantly improve the tensile strength and elongation of the samples. LR with the same processing parameters as the deposition has the most obvious effect on refining the microstructure and improving tensile properties. However, the LR process with low energy density will increase the residual stress of the sample, resulting in poor mechanical properties.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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