Welding in the World最新文献_第2页

Feasibility study on machine learning methods for prediction of process-related parameters during WAAM process using SS-316L filler material 使用 SS-316L 填充材料在 WAAM 工艺中预测工艺相关参数的机器学习方法的可行性研究

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-31 DOI: 10.1007/s40194-024-01855-w

Sharath P. Subadra, Eduard Mayer, Philipp Wachtel, Shahram Sheikhi

{"title":"Feasibility study on machine learning methods for prediction of process-related parameters during WAAM process using SS-316L filler material","authors":"Sharath P. Subadra, Eduard Mayer, Philipp Wachtel, Shahram Sheikhi","doi":"10.1007/s40194-024-01855-w","DOIUrl":"10.1007/s40194-024-01855-w","url":null,"abstract":"<div><p>The geometry of objects by means of wire arc additive manufacturing technology (WAAM) is a function of the quality of the deposited layers. The process parameters variation and heat flow affect the geometric precision of the parts, when compared to the actual dimensions. Therefore, in situ geometry monitoring which is integrated in such a way to enable a backward control model is essential in the WAAM process. In this article, an attempt is made to study the effect of four input variables, namely voltage (U), welding current (I), travel speed and wire feed rate on the output function in the form of two geometrical characteristics of a single weld bead. These output functions which are determinant of the weld quality are width of weld bead (BW) and height of weld bead (BH). A machine learning approach is utilised to predict the bead dimensions based on the input parameters and to predict the parameters by assigning suitable scores. For predicting the bead dimensions, two models, namely linear regression and random forest, shall be utilised, whereas for the purpose of classification based on weld parameters, k-nearest neighbours model shall be employed. Through this work, a wide dataset of parameters in the form of input variable and output in the form bead dimensions are generated for 316LSi filler material which shall be used as a training data for a machine learning algorithm. Subsequently, the predicted parameters shall be cross-checked with actual parameters.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 12","pages":"3205 - 3214"},"PeriodicalIF":2.4,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01855-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Publisher Correction: Novel approach for in-line process monitoring during ultrasonic metal welding of dissimilar wire/terminal joints based on the thermoelectric effect 出版商更正：基于热电效应的异种线材/端子接头超声波金属焊接在线过程监控新方法

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-30 DOI: 10.1007/s40194-024-01860-z

Andreas Gester, Toni Sprigode, Guntram Wagner

引用次数: 0

Development of automation and monitoring methods for narrow-gap hot-wire laser welding using camera images 利用摄像机图像开发窄间隙热丝激光焊接的自动化和监控方法

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-28 DOI: 10.1007/s40194-024-01849-8

K. Marumoto, Y. Sato, A. Fujinaga, T. Takahashi, H. Yamamoto, M. Yamamoto

{"title":"Development of automation and monitoring methods for narrow-gap hot-wire laser welding using camera images","authors":"K. Marumoto, Y. Sato, A. Fujinaga, T. Takahashi, H. Yamamoto, M. Yamamoto","doi":"10.1007/s40194-024-01849-8","DOIUrl":"10.1007/s40194-024-01849-8","url":null,"abstract":"<div><p>In this study, an image-based method was developed for hot-wire laser narrow gap welding. The welding process was monitored based on image information processed using semantic segmentation, a method of classifying images by pixel. To control the welding position, an experimental system was configured that automatically follows the welding position by recognizing the position of the welding groove from the image during welding. In monitoring weld defects, a method was developed to predict the lack of fusion occurring on the wall surface using brightness information near the wall surface. For the lack of fusion occurring at the bottom of the groove, a defect detection method was developed by monitoring the molten pool shape using semantic segmentation. Defects were generated by intentionally reducing the laser power, and the defects were monitored from images taken during processing. In the unstable state where the laser power was reduced, the shape in front of the molten pool became unstable, and the occurrence of defects was monitored by capturing the shape change. In conclusion, this research made it possible to control and monitor the welding process with a single camera.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 1","pages":"269 - 280"},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01849-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Studies on multiple weld repairs of M250 maraging steel for solid motor casing used in satellite launch vehicle application 卫星运载火箭发动机壳体用M250马氏体时效钢多次焊缝修补研究

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-28 DOI: 10.1007/s40194-024-01858-7

P. Manikandan, K. Jalaja, S. Anoop, G. Sudarshan Rao, Sushant K. Manwatkar, Anil Kumar Jain, A. Venugopal, Rohit Kumar Gupta, Jacob Philip, P. Ramesh Narayanan, Govind Bajargan

{"title":"Studies on multiple weld repairs of M250 maraging steel for solid motor casing used in satellite launch vehicle application","authors":"P. Manikandan, K. Jalaja, S. Anoop, G. Sudarshan Rao, Sushant K. Manwatkar, Anil Kumar Jain, A. Venugopal, Rohit Kumar Gupta, Jacob Philip, P. Ramesh Narayanan, Govind Bajargan","doi":"10.1007/s40194-024-01858-7","DOIUrl":"10.1007/s40194-024-01858-7","url":null,"abstract":"<div><p>Maraging steel (M250) is extensively used in aerospace industries for the fabrication of solid propellant tanks in the welded and repair welded condition. The purpose of the investigation is to study the effect of multiple weld repairs on the microstructure and mechanical behavior of the alloy. The microstructure of the alloy in the as-welded condition contains two distinct heat-affected zones (HAZ) with different contents of reverted austenite. The results indicate that increased weld repair reduced the weld strength from 1722 to 1405 MPa whereas elongation increased from 5.8 to 6.1%. Fracture toughness was found to increase from 79 to 87.2 MPa√m. This is due to the increased content of reverted austenite of HAZ, which is a result of heat experienced by the zone during welding. The location of failure was predominantly along the HAZ 2 which is the mechanically weaker zone of the weld joint as revealed by microhardness measurements. Further, minor improvement in corrosion resistance is found due to increased content of austenite in HAZ in repair weld conditions.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 1","pages":"1 - 14"},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Life cycle assessment in additive manufacturing of copper alloys—comparison between laser and electron beam 铜合金增材制造的生命周期评估--激光和电子束的比较

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-23 DOI: 10.1007/s40194-024-01856-9

Julius Raute, Alexander Beret, Max Biegler, Michael Rethmeier

{"title":"Life cycle assessment in additive manufacturing of copper alloys—comparison between laser and electron beam","authors":"Julius Raute, Alexander Beret, Max Biegler, Michael Rethmeier","doi":"10.1007/s40194-024-01856-9","DOIUrl":"10.1007/s40194-024-01856-9","url":null,"abstract":"<div><p>Additive manufacturing is becoming increasingly important for industrial production. In this context, directed energy deposition processes are in demand to achieve high deposition rates. In addition to the well-known laser-based processes, the electron beam has also reached industrial market maturity. The wire electron beam additive manufacturing offers advantages in the processing of copper materials, for example. In the literature, the higher energy efficiency and the resulting improvement in the carbon footprint of the electron beam are highlighted. However, there is a lack of practical studies with measurement data to quantify the potential of the technology. In this work, a comparative life cycle assessment between wire electron beam additive manufacturing (DED-EB) and laser powder additive manufacturing (DED-LB) is carried out. This involves determining the resources for manufacturing, producing a test component using both processes, and measuring the entire energy consumption. The environmental impact is then estimated using the factors global warming potential (GWP100), photochemical ozone creation potential (POCP), acidification potential (AP), and eutrophication potential (EP). It can be seen that wire electron beam additive manufacturing is characterized by a significantly lower energy requirement. In addition, the use of wire ensures greater resource efficiency, which leads to overall better life cycle assessment results.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 12","pages":"3169 - 3176"},"PeriodicalIF":2.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01856-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Cr addition on microstructure, mechanical properties, and corrosion behavior of weld metal in weathering steel of high-speed train bogie 添加铬对高速列车转向架耐候钢焊缝金属的微观结构、机械性能和腐蚀行为的影响

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-17 DOI: 10.1007/s40194-024-01848-9

Gaojian Wang, Dandan Kang, Yanhong Ye, Dean Deng

{"title":"Effect of Cr addition on microstructure, mechanical properties, and corrosion behavior of weld metal in weathering steel of high-speed train bogie","authors":"Gaojian Wang, Dandan Kang, Yanhong Ye, Dean Deng","doi":"10.1007/s40194-024-01848-9","DOIUrl":"10.1007/s40194-024-01848-9","url":null,"abstract":"<div><p>The effects of Cr addition on the microstructure, mechanical properties, and corrosion behavior of two weld metals containing Ti or Mo within the Ni-Cu alloys used in high-speed train bogies were investigated. The results show that Cr can increase the acicular ferrite (AF) by about 15%, reduce the primary ferrite (PF) and the ferrite with second phase aligned (FSP), and slightly increase the M-A constituents in the weld containing Ti. Cr addition scarcely alters the AF, leads to a decline in PF and an increase in FSP, and causes a substantial increase in M-A constituents from 0.4 to 2.5% in the as-welded zone containing Mo. Meanwhile, it was found that Cr addition negatively affects weld toughness in the weld containing Mo due to the increase in the proportion and size of M-A constituents and the coarsening of inclusions. Regarding the corrosion resistance, Cr addition can promote the absorption of Cr on the surface of inclusions. This is the main reason for the reduction of the initial corrosion rate of the weld containing Mo, while this effect is attenuated in the welds containing Ti. In addition, Cr addition can densify the inner and outer rust layers, thereby reducing the corrosion rate of the welding rust layer.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 12","pages":"3115 - 3128"},"PeriodicalIF":2.4,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of travel speed on porosity and liquation cracking in cold wire pulsed gas metal arc welding of aa7075-t651 aluminum alloy 行进速度对 aa7075-t651 铝合金冷丝脉冲气体金属弧焊中气孔和液化裂纹的影响

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-08 DOI: 10.1007/s40194-024-01844-z

A. A. C. Filho, C. R. L. Loayza, P. D. C. Assunção, E. M. Braga

引用次数: 0

Microstructure and properties of additive manufacturing by gas-shielded arc welding with hydrogen-resistant steel wires 用耐氢钢焊丝通过气体保护电弧焊进行增材制造的微观结构和性能

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-07 DOI: 10.1007/s40194-024-01835-0

Guo Chun, Zhang XinYu, Li WenQing, Li Yun, Chen YanYan, Huang GuangCan, Lin QingCheng

引用次数: 0

A comprehensive study on laser welding of stainless steel 301LN in lap joint configuration 搭接结构不锈钢 301LN 激光焊接综合研究

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-10-01 DOI: 10.1007/s40194-024-01840-3

Thierry Adrien, Shayan Dehghan, Asim Iltaf, Noureddine Barka

{"title":"A comprehensive study on laser welding of stainless steel 301LN in lap joint configuration","authors":"Thierry Adrien, Shayan Dehghan, Asim Iltaf, Noureddine Barka","doi":"10.1007/s40194-024-01840-3","DOIUrl":"10.1007/s40194-024-01840-3","url":null,"abstract":"<div><p>Laser welding offers distinct advantages over traditional methods: less heat impact, no filler metal needed, and strong weld penetration. It is efficient and cost-effective, perfect for joining materials like the stainless steel 301LN, and ideal for industries addressing climate change. This study delves into the impact of various operating parameters on weld quality, specifically focusing on microstructure and microhardness. Using the Taguchi method, it is designed an experimental setup to systematically analyze these factors. The microstructure analysis shows a unique grain structure in the weld bead and a small heat-affected zone (HAZ), indicating precise welding control. Weld penetration measurements correlated with specific operating parameters using microstructure imaging. The microhardness analysis further underlined the control over HAZ thickness, crucial for ensuring the integrity of the welded joint. Through analysis of variance (ANOVA), it is identified significant factors affecting physical properties, help to construct a mathematical model to quantify parameter influences accurately. Findings suggest that minimizing the focal spot diameter is key to optimizing weld penetration, albeit in a delicate balance with welding speed and laser power settings. Adjusting these parameters can also influence the chemical composition match between the weld bead and base material, crucial for structural integrity. For achieving the desired hardness close to the base material, specific parameter ranges are recommended: a beam oscillation amplitude of 1.45 mm, a beam oscillation amplitude between 2.82 and 2.97 kW, and a focal spot diameter above 0.34 mm. Findings offer practical insights for improving weld quality and efficiency in industrial applications.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 12","pages":"3141 - 3168"},"PeriodicalIF":2.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Round robin study on the determination of weld geometry parameters - Part A: analysis of a reference specimen 确定焊接几何参数的循环研究 - A 部分：参考试样分析

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-09-27 DOI: 10.1007/s40194-024-01829-y

Matthias Jung, Moritz Braun, Jan Schubnell, Heikki Remes

{"title":"Round robin study on the determination of weld geometry parameters - Part A: analysis of a reference specimen","authors":"Matthias Jung, Moritz Braun, Jan Schubnell, Heikki Remes","doi":"10.1007/s40194-024-01829-y","DOIUrl":"10.1007/s40194-024-01829-y","url":null,"abstract":"<div><p>The weld toe is known to be a critical point of fatigue failure in many welded constructions. Especially for research purposes but also for improving fatigue life predictions, the weld toes geometry is often described by a set of parameters, including the weld toe radius and the flank angle. There is no universal agreement on the definition of the geometry parameters as well as on measuring routines. To get an overview over used techniques and comparability between research labs, a comprehensive round robin study was conducted over the past years. Two measuring tasks were given to the participants. Part A: A machined specimen with well known geometry inspired by a cruciform joint was analyzed and the results were compared with the actual dimensions of the specimen. Part B: Welded specimens with unknown geometry were measured by the participants and the results were bench-marked against each other. The present study summarizes the findings of Part A. The study gives an overview over used measuring techniques, the influence of measuring equipment and the comparability of the results in the scientific community. Most of the participants achieved good results with their respective measuring methods for radii larger than 1 mm. Smaller radii tend to be overestimated.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 1","pages":"169 - 176"},"PeriodicalIF":2.4,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01829-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0