Journal of Manufacturing and Materials Processing最新文献_第3页

Effect of Intermediate Path on Post-Wrinkle Initiation of the Multi-Pass Metal Spinning Process: Analysis in the Rotating Reference Frame 多道金属旋压过程中中间路径对后起皱的影响：旋转参照系分析

Journal of Manufacturing and Materials Processing Pub Date : 2024-01-24 DOI: 10.3390/jmmp8010019

Huy Hoan Nguyen, H. Champliaud, V. Lê

{"title":"Effect of Intermediate Path on Post-Wrinkle Initiation of the Multi-Pass Metal Spinning Process: Analysis in the Rotating Reference Frame","authors":"Huy Hoan Nguyen, H. Champliaud, V. Lê","doi":"10.3390/jmmp8010019","DOIUrl":"https://doi.org/10.3390/jmmp8010019","url":null,"abstract":"The metal spinning process has been observed in recent major investigations carried out using finite element analysis. One interesting idea has proposed simulating a rotating disc for the simulation of the metal spinning process to reduce computational time. The development of this concept is presented in this paper, including the formal mathematical transformation from the inertial frame to the rotating reference frame, specific FEM configurations with mesh sizes based on a minimized aspect ratio, a mesh convergence study, and the application of a feed rate scale. Furthermore, in the context of the rotating reference frame, the flange geometry after wrinkle initiation is investigated, including the number of peaks and their amplitudes. Using this new approach, it was found that the number of peaks gradually increases from two to eight peaks while their amplitude decreases. In the case of severe wrinkles, the number of peaks stays at four while the amplitude increases dramatically. The intermediate path proves capable of increasing the number of peaks while maintaining a low amplitude. These results will make it possible to design new paths, facilitating the production of defect-free spun parts.","PeriodicalId":509245,"journal":{"name":"Journal of Manufacturing and Materials Processing","volume":"32 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139602457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser Beam Welding under Vacuum of Hot-Dip Galvanized Constructional Steel 热浸镀锌建筑钢材真空下的激光束焊接

Journal of Manufacturing and Materials Processing Pub Date : 2024-01-22 DOI: 10.3390/jmmp8010017

Christian Frey, Ole Stocks, S. Olschok, R. Kühne, Markus Feldmann, U. Reisgen

{"title":"Laser Beam Welding under Vacuum of Hot-Dip Galvanized Constructional Steel","authors":"Christian Frey, Ole Stocks, S. Olschok, R. Kühne, Markus Feldmann, U. Reisgen","doi":"10.3390/jmmp8010017","DOIUrl":"https://doi.org/10.3390/jmmp8010017","url":null,"abstract":"Hot-dip galvanized components offer a great potential for corrosion protection of up to 100 years, while laser beam welding in vacuum (LaVa) has the advantage of high penetration depths Combined, this process chain can be economically used in steel construction of bridges, wind turbines, or other steel constructions. Therefore, investigations of butt joint welding of galvanized 20 mm thick S355M steel plates using LaVa were carried out. The butt joints were prepared under different cutting edges such as flame-cut, sawn, and milled edges, and they were studied with and without the zinc layer in the joint gap. For this purpose, the laser parameters such as the beam power, welding speed, focus position, and working pressure all varied, as did the oscillation parameters. The welds performed using an infinity oscillation with an amplitude of 5 mm represented a pore-free weld up to a zinc layer thickness of 400 µm in the joint gap. The seam undercut increased with increasing the zinc layer thickness in the joint gap, which can be explained by the evaporating zinc and consequently the missing material, since no filler material was used. The joint welds with zinc only on the sheet surface achieved a sufficient weld quality without pores.","PeriodicalId":509245,"journal":{"name":"Journal of Manufacturing and Materials Processing","volume":"42 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139606935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of Compressive Behavior of Laser-Powder-Bed Fusion-Processed TPMS Lattices by Regression Analysis 通过回归分析预测激光粉末床熔融加工 TPMS 晶格的压缩行为

Journal of Manufacturing and Materials Processing Pub Date : 2024-01-21 DOI: 10.3390/jmmp8010016

U. Şimşek, O. Gülcan, Kadir Günaydın, A. Tamer

{"title":"Prediction of Compressive Behavior of Laser-Powder-Bed Fusion-Processed TPMS Lattices by Regression Analysis","authors":"U. Şimşek, O. Gülcan, Kadir Günaydın, A. Tamer","doi":"10.3390/jmmp8010016","DOIUrl":"https://doi.org/10.3390/jmmp8010016","url":null,"abstract":"Triply periodic minimal surface (TPMS) structures offer lightweight and high-stiffness solutions to different industrial applications. However, testing of these structures to calculate their mechanical properties is expensive. Therefore, it is important to predict the mechanical properties of these structures effectively. This study focuses on the effectiveness of using regression analysis and equations based on experimental results to predict the mechanical properties of diamond, gyroid, and primitive TPMS structures with different volume fractions and build orientations. Gyroid, diamond, and primitive specimens with three different volume fractions (0.2, 0.3, and 0.4) were manufactured using a laser powder bed fusion (LPBF) additive manufacturing process using three different build orientations (45°, 60°, and 90°) in the present study. Experimental and statistical results revealed that regression analysis and related equations can be used to predict the mass, yield stress, elastic modulus, specific energy absorption, and onset of densification values of TPMS structures with an intermediate volume fraction value and specified build orientation with an error range less than 1.4%, 7.1%, 19.04%, 21.6%, and 13.4%, respectively.","PeriodicalId":509245,"journal":{"name":"Journal of Manufacturing and Materials Processing","volume":"4 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139610102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implications from Legacy Device Environments on the Conceptional Design of Machine Learning Models in Manufacturing 传统设备环境对制造业机器学习模型概念设计的影响

Journal of Manufacturing and Materials Processing Pub Date : 2024-01-17 DOI: 10.3390/jmmp8010015

Bastian Engelmann, Anna-Maria Schmitt, Lukas Theilacker, Jan Schmitt

引用次数: 0

Numerical Modeling of Cutting Characteristics during Short Hole Drilling: Part 2—Modeling of Thermal Characteristics 短孔钻凿过程中切削特性的数值建模：第 2 部分--热特性建模

Journal of Manufacturing and Materials Processing Pub Date : 2024-01-13 DOI: 10.3390/jmmp8010013

M. Storchak, T. Stehlé, Hans-Christian Möhring

{"title":"Numerical Modeling of Cutting Characteristics during Short Hole Drilling: Part 2—Modeling of Thermal Characteristics","authors":"M. Storchak, T. Stehlé, Hans-Christian Möhring","doi":"10.3390/jmmp8010013","DOIUrl":"https://doi.org/10.3390/jmmp8010013","url":null,"abstract":"The modeling of machining process characteristics and, in particular, of various cutting processes occupies a significant part of modern research. Determining the thermal characteristics in short hole drilling processes by numerical simulation is the object of the present study. For different contact conditions of the workpiece with the drill cutting inserts, the thermal properties of the machined material were determined. The above-mentioned properties and parameters of the model components were established using a three-dimensional finite element model of orthogonal cutting. Determination of the generalized values of the machined material thermal properties was performed by finding the set intersection of individual properties values using a previously developed software algorithm. A comparison of experimental and simulated values of cutting temperature in the workpiece points located at different distances from the drilled hole surface and on the lateral clearance face of the drill outer cutting insert shows the validity of the developed numerical model for drilling short holes. The difference between simulated and measured temperature values did not exceed 22.4% in the whole range of the studied cutting modes.","PeriodicalId":509245,"journal":{"name":"Journal of Manufacturing and Materials Processing","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139623614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0