Journal of Mechanical Science and Technology最新文献_第4页

Multi objective optimization of parameters during FSW of AZ80A - AZ31B Mg alloys using grey relational analysis 利用灰色关系分析法对 AZ80A - AZ31B 镁合金 FSW 过程中的参数进行多目标优化

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-04 DOI: 10.1007/s12206-024-0832-3

J. Gunasekaran, P. Sevvel, I. John Solomon, J. Vasanthe Roy

{"title":"Multi objective optimization of parameters during FSW of AZ80A - AZ31B Mg alloys using grey relational analysis","authors":"J. Gunasekaran, P. Sevvel, I. John Solomon, J. Vasanthe Roy","doi":"10.1007/s12206-024-0832-3","DOIUrl":"https://doi.org/10.1007/s12206-024-0832-3","url":null,"abstract":"We attempted to optimize the process-based parameters during friction stir welding of AZ80A - AZ31B Mg alloys with the objective of enhancing the mechanical properties of the fabricated joints. A response surface method based grey relational analysis was employed using three factors and three distinctive levels. A central composite design based multi-objective numerical model using the technique of grey relational analysis was formulated for optimizing the tool dependent parameters, namely tool’s rotational speed, its speed of traverse and geometry of the pin. Grey relational grade was determined for all the responses: tensile strength and elongation percentage. Analysis of variance was employed for attaining grey relational grade to determine the most influential parameter of the FSW process. It was observed that the geometry of the tool pin had a greater impact in ascertaining the quality of the fabricated Mg alloy joints, and the tool possessing tapered cylindrical pin geometry exhibited larger values of grey relational grade. Optimized process parameter settings based on the attained GRG values were recorded to be 1100 rpm rotational speed, speed of traverse of 1.5 mm/sec and a tool with taper cylindrical pin geometry. The anticipated values were validated through confirmation investigational runs performed during employment of optimized parameter combinations, which exhibited a perfect agreement with the investigational run values and the confirmatory joint exhibited a tensile strength of 260.42 MPa and elongation percentage of 6.53.","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Wheel noise reduction performance of active steering bogie in curved section 曲线段主动转向转向架的车轮降噪性能

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-04 DOI: 10.1007/s12206-024-0810-9

Hyunmoo Hur, Kyungho Moon, Jungwon Seo, Jonghyun Choi, Junhyuk Lee

{"title":"Wheel noise reduction performance of active steering bogie in curved section","authors":"Hyunmoo Hur, Kyungho Moon, Jungwon Seo, Jonghyun Choi, Junhyuk Lee","doi":"10.1007/s12206-024-0810-9","DOIUrl":"https://doi.org/10.1007/s12206-024-0810-9","url":null,"abstract":"In this paper, the noise reduction performance of the active steering bogie, developed to address wheel and rail wear and reduce noise during train operation in curved sections, was evaluated. A prototype of the active steering bogie was installed on the test train, and noise reduction performance by active steering control was measured in curved sections of a commercial line with a radius of curve of 300 m or less. The results of the test run confirmed that both the wheel and car interior noise were reduced when active steering control was applied, compared with the case where it was not applied. According to the test results in the curved section with the most noise reduction effect, the equivalent noise level was reduced by 6.6 dB for wheels and 4.7 dB for the car body by active steering control. In addition, analyzing the frequency characteristics by wheel steering control has confirmed that the squeal noise mode generated in the 300 to 2000 Hz band during curve running was significantly reduced. Therefore, the noise reduction performance of the active steering bogie, developed to improve steering performance in curved sections, has been sufficiently verified through the test results.","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Kinematic performance evaluation method of a 3-DOF redundantly actuated parallel manipulator 3-DOF 冗余致动平行机械手的运动性能评估方法

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-04 DOI: 10.1007/s12206-024-0841-2

Yunfeng Jian, Guang Yu, Jun Wu, Bin Zhu, Yanling Tian

引用次数: 0

Insufficient environmental information indoor localization of mecanum mobile platform using wheel-visual-inertial odometry 利用轮子-视觉-惯性里程测量法对环境信息不足的 mecanum 移动平台进行室内定位

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-0836-z

Chaehyun Lee, Seongyong Hur, David Kim, Yoseph Yang, Dongil Choi

{"title":"Insufficient environmental information indoor localization of mecanum mobile platform using wheel-visual-inertial odometry","authors":"Chaehyun Lee, Seongyong Hur, David Kim, Yoseph Yang, Dongil Choi","doi":"10.1007/s12206-024-0836-z","DOIUrl":"https://doi.org/10.1007/s12206-024-0836-z","url":null,"abstract":"In autonomous driving of the mobile robot, the robot’s current location should be identified first to plan and move a path to the target location. Accordingly, research on the robot’s localization using GPS, 3D LiDAR, and Vision has been actively conducted. However, there is a limitation in that it is difficult to locate robots in indoor spaces where signals are disturbed by walls or ceilings, or in areas where sufficient environmental information cannot be obtained. This paper introduces the robot’s position estimation method to overcome these environmental problems by using sensor fusion in an indoor tennis court. We propose a localization method that has low latency performance and high location accuracy through the use of Kalman filters to fuse data from wheel odometry and visual-inertial odometry. To evaluate its performance, this method was compared against wheel odometry, visual-inertial odometry, and LIO-SAM after the robot completed three rectangular paths. The resultant mean absolute errors in the x and y directions were 1.908 m and 0.707 m for wheel odometry, 1.169 m and 1.430 m for visual-inertial odometry, and 0.400 m and 0.383 m for LIO-SAM, respectively. In contrast, the wheel-visual-inertial odometry introduced in this study reported errors of 0.209 m and 0.103 m in the x and y directions, respectively, indicating superior accuracy compared to the other algorithms. This underscores the effectiveness of the proposed method in indoor environments where signals can be obstructed by walls or ceilings, or in areas lacking abundant environmental information.","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 framework based on implicit modeling for a compact heat exchanger with triply periodic minimal surface structures 基于隐式建模的紧凑型热交换器设计框架，具有三重周期性最小表面结构

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-2402-0

Jaeho Shim, Jaehyeok Doh, Sang-in Park

引用次数: 0

Adaptive prescribed performance control of output constrained hybrid-powered barrel elevator with dual-model uncertainty compensation 采用双模型不确定性补偿的输出受限混合动力筒式升降机的自适应规定性能控制

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-0838-x

Yukai Wei, Linfang Qian, Quan Zou, Longmiao Chen, Shoucheng Nie

{"title":"Adaptive prescribed performance control of output constrained hybrid-powered barrel elevator with dual-model uncertainty compensation","authors":"Yukai Wei, Linfang Qian, Quan Zou, Longmiao Chen, Shoucheng Nie","doi":"10.1007/s12206-024-0838-x","DOIUrl":"https://doi.org/10.1007/s12206-024-0838-x","url":null,"abstract":"This study concerns the position tracking control of the hybrid-powered barrel elevator (HPBE) with dual-channel model uncertainty and output constraints. To realize an outstanding control performance, a dual-extended-state-observer-based command filtered adaptive prescribed performance control (DESO-CFAPPC) strategy is presented based on the dynamic model considering various nonlinearities and model uncertainties. The conjunction of the PPC and barrier Lyapunov function in the DESO-CFAPPC not only prevents violation of output constraints of the barrel, but also prevents the complex calculation caused by the logarithmic ETF in the traditional PPC. The adaptive laws are constructed to estimate uncertain parameters. The DESO further estimates the unknown velocity, mismatched and matched model uncertainties. The obtained estimates are incorporated into the control law to enhance the tracking performance. The stability and convergence of the DESO-CFAPPC are theoretically proved and comparative experimental results indicate the effectiveness of the proposed strategy.","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142198852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Reliability sensitivity analysis for set pressure tolerance of the direct-operated relief valve in a vibration environment 振动环境下直动式溢流阀设定压力公差的可靠性敏感性分析

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-0819-0

Congyi Zha, Chenrong Pan, Zhili Sun, Qin Liu

引用次数: 0

Effects of furnace temperature of stress-relief annealing on residual stress and hardness characteristics of heterogeneous materials fabricated from a DED process 去应力退火的炉温对通过 DED 工艺制造的异质材料的残余应力和硬度特性的影响

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-2403-z

Kwang-Kyu Lee, Dong-Gyu Ahn

{"title":"Effects of furnace temperature of stress-relief annealing on residual stress and hardness characteristics of heterogeneous materials fabricated from a DED process","authors":"Kwang-Kyu Lee, Dong-Gyu Ahn","doi":"10.1007/s12206-024-2403-z","DOIUrl":"https://doi.org/10.1007/s12206-024-2403-z","url":null,"abstract":"The residual stress causes a premature failure of the manufactured product by a directed energy deposition (DED) process. The stress-relief annealing process can effectively decrease the residual stress. However, the research on the stress-relief annealing on residual stress characteristics of the fabricated part by the DED process consisting of heterogeneous materials has hardly performed yet. The goal of this research work is to investigate the effects of the furnace temperature of stress-relief annealing on residual stress and hardness characteristics of heterogeneous materials fabricated from the DED process. The as-built specimen was created by the deposition of Gridur 6 (G6) powders on AISI 1045 substrates using the DED head of DVF-8000AML. The stress-relief annealing process of the as-built specimen was carried out using an electric furnace. The influence of the furnace temperature on the surface morphology, the residual stress of the boundary region and the hardness of top and bottom surfaces was discussed. Finally, proper furnace temperatures of the stress-relief annealing were proposed.","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

E-glass fiber featured hybrid aluminium alloy composite: Metallographic, mechanical and fracture failure study 以 E 玻璃纤维为特征的混合铝合金复合材料：金相、机械和断裂失效研究

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-0821-6

R. Venkatesh, N. Parthipan, Pranav Kumar, S. Muthukumarasamy, Ismail Hossain, V. Mohanavel, Majed A. Alotaibi, A. H. Seikh, Md Abul Kalam

引用次数: 0

Multi-material 3D printed multiple state sensor units: design and materialization of a command joystick set 多材料 3D 打印多状态传感器单元：指令操纵杆组的设计与材料化

IF 1.6 4区工程技术

Journal of Mechanical Science and Technology Pub Date : 2024-09-03 DOI: 10.1007/s12206-024-2405-x

Joaquim Minguella-Canela, Manel Frigola, Alicia Casals

引用次数: 0