Manufacturing Letters最新文献

Rapid sintering for enhancing mechanical properties of cold-sprayed Al6061 and SS316L 快速烧结提高冷喷涂Al6061和SS316L的力学性能

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Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-02-11 DOI: 10.1016/j.mfglet.2026.02.001

Thomas Grippi, Andrii Maximenko, Runjian Jiang, Donald Olumor, Elisa Torresani, Eugene Olevsky

引用次数: 0

Novel prediction and interpretation of nonlinear forming limits for sheet metals 板材非线性成形极限的新预测与解释

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-02-14 DOI: 10.1016/j.mfglet.2026.02.004

Marlon Hahn

引用次数: 0

Controlling molten pool instability-induced humping in wire arc deposition using mechanistic augmented learning 利用机械增强学习控制熔池不稳定引起的电弧沉积驼峰

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-02-20 DOI: 10.1016/j.mfglet.2026.02.005

Rakshith Reddy Sanvelly, Mohammad Arjomandi, Tuhin Mukherjee

{"title":"Controlling molten pool instability-induced humping in wire arc deposition using mechanistic augmented learning","authors":"Rakshith Reddy Sanvelly, Mohammad Arjomandi, Tuhin Mukherjee","doi":"10.1016/j.mfglet.2026.02.005","DOIUrl":"10.1016/j.mfglet.2026.02.005","url":null,"abstract":"<div><div>Humping is a common defect in wire arc deposition that arises from molten pool instabilities, leading to poor surface quality, increased post-processing, and reduced structural integrity of components. Traditional approaches to suppress humping rely on empirical process parameter adjustment or computationally intensive physics-based models, both of which have limited generalizability across materials and operating conditions. In this work, we introduce a mechanistic augmented learning framework that integrates mechanistic modeling with machine learning to predict and control humping. A mechanistic model was first developed to calculate temperature and molten pool dimensions from processing conditions and validated using high-speed imaging. Results showed that increasing scanning speed reduced molten pool depth and bead height, while lower speeds stabilized track profiles. Dimensionless descriptors, Richardson number and pool aspect ratio, were identified as critical predictors of molten pool stability. A support vector machine classifier trained on these computed variables successfully separated seventy nine experimental cases into humping and no-humping regimes across three alloys. Confocal microscopy of the tracks deposited using our own collaborative robot-assisted wire arc system confirmed that tracks in the predicted safe region (low Richardson number and aspect ratio) exhibited smooth, uniform surfaces with minimal height deviation. The resulting process maps provide a transferable, physics-informed pathway for controlling humping in wire arc deposition.</div></div>","PeriodicalId":38186,"journal":{"name":"Manufacturing Letters","volume":"47 ","pages":"Pages 83-88"},"PeriodicalIF":2.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147396461","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

Hyperdimensional computing for sustainable manufacturing: an initial assessment 可持续制造的超维计算：初步评估

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Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-02-09 DOI: 10.1016/j.mfglet.2026.01.004

Danny Hoang , Anandkumar Patel , Ruimen Chen , Rajiv Malhotra , Farhad Imani

引用次数: 0

An innovative hybrid architecture to overcome misreporting in supply chain coordination under information asymmetry 一种克服信息不对称下供应链协调误报的创新混合体系结构

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-01-23 DOI: 10.1016/j.mfglet.2026.01.002

Emma Salatiello, Silvestro Vespoli, Andrea Grassi, Guido Guizzi

引用次数: 0

A new insight into plastic deformation behavior and its effect on pull-out failure of resistance spot welds during cross-tension testing 交叉拉伸试验中电阻点焊塑性变形行为及其对拉出破坏影响的新认识

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-02-06 DOI: 10.1016/j.mfglet.2026.01.003

Hui Wang , Tianyou Li , Shunjie Yao , Huali Zhang

{"title":"A new insight into plastic deformation behavior and its effect on pull-out failure of resistance spot welds during cross-tension testing","authors":"Hui Wang , Tianyou Li , Shunjie Yao , Huali Zhang","doi":"10.1016/j.mfglet.2026.01.003","DOIUrl":"10.1016/j.mfglet.2026.01.003","url":null,"abstract":"<div><div>It has been widely reported that softening heat-affected-zone (HAZ) of resistance spot welds (RSW) usually results in improved weld mechanical performance. This study attempted to explain this phenomenon from a new insight into the plastic deformation behavior and its effect on pull-out failure during cross-tension (CT) testing. Finite element (FE) modelling was conducted to simulate the plastic deformation behaviors of a hard and a soft dual-phase (DP) steel welds during CT testing. After experimentally validated, the numerical predictions were analyzed. Firstly, FE predictions show that the deformation around the weld circumference is more uniform in the soft DP steel than the hard steel, which means a relatively larger fraction of the weld circumference involved in the deformation and bearing loading in the soft steel. Secondly, the relatively higher displacement of the soft steel leads to a larger fraction of weld circumference involving into deformation. The HAZ strength alters the deformation mode via these two factors, and these two factors are believed to be additional reasons for why HAZ softening improves RSW mechanical performance.</div></div>","PeriodicalId":38186,"journal":{"name":"Manufacturing Letters","volume":"47 ","pages":"Pages 62-66"},"PeriodicalIF":2.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188860","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

Co-extrusion of internally oxidized Nb-1Zr: An avenue to new load-bearing implants 内氧化Nb-1Zr共挤压：一种新型承重植入物的途径

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-02-12 DOI: 10.1016/j.mfglet.2026.02.003

Julian-Tobias Schleich , Julius Max Jakob Siegmund , Minh Tien Phan , Philipp-Cornelius Pott , Hans Jürgen Maier , Christian Klose

引用次数: 0

Microstructure and properties of Ti-Fe deposition layers fabricated in situ by wire arc additive manufacturing 电弧增材制造原位制备Ti-Fe沉积层的组织与性能

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-01-02 DOI: 10.1016/j.mfglet.2025.12.002

Zhetao Liang , Peng Li , Jiayan Lv , Shuhui Wang , Yinbao Tian

{"title":"Microstructure and properties of Ti-Fe deposition layers fabricated in situ by wire arc additive manufacturing","authors":"Zhetao Liang , Peng Li , Jiayan Lv , Shuhui Wang , Yinbao Tian","doi":"10.1016/j.mfglet.2025.12.002","DOIUrl":"10.1016/j.mfglet.2025.12.002","url":null,"abstract":"<div><div>To overcome the low surface hardness of Ti-6Al-4V alloy, Ti-Fe deposition layers were fabricated on a Ti-6Al-4V substrate using dual-wire arc additive manufacturing (D-WAAM) with Ti and Fe wires. The microstructure, phase composition, and mechanical properties of the deposited layer were systematically investigated. Elemental analysis revealed a gradual diffusion of Fe and Ti along the build height, forming a compositional transition zone near the substrate. XRD and EDS results confirmed that the deposited layer consisted mainly of α-Ti and Ti<sub>2</sub>Fe phases. The microstructure evolved from plate-like to needle-like and eventually to fibrous morphologies with increasing deposition height, indicating progressive refinement. The microhardness increased from 320 HV<sub>0.2</sub> at the substrate to a maximum of 677 HV<sub>0.2</sub> at the top, primarily due to Fe solid-solution strengthening, Ti<sub>2</sub>Fe precipitation, and grain refinement. The tensile strength reached 713 MPa, slightly higher than Ti-6Al-4V, while fracture analysis showed brittle features caused by Ti<sub>2</sub>Fe formation. These findings demonstrate that in-situ alloying via D-WAAM effectively enhances surface hardness, offering a promising approach to strengthening Ti alloys.</div></div>","PeriodicalId":38186,"journal":{"name":"Manufacturing Letters","volume":"47 ","pages":"Pages 46-50"},"PeriodicalIF":2.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037912","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

Exploring commercial PHA filament for more eco-friendly 3D printing 探索商业PHA灯丝更环保的3D打印

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Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.mfglet.2025.12.005

Mario Cvetkoski , Hossein Najaf Zadeh

引用次数: 0

Metallurgical investigation on the joining of dissimilar metallic pipes (Cu-SS304) using microwave energy 异种金属管（Cu-SS304）微波连接的冶金研究

IF 2

Manufacturing Letters Pub Date : 2026-03-01 Epub Date: 2026-01-04 DOI: 10.1016/j.mfglet.2025.12.004

Ankush Thakur , Raman Bedi , Virinder Kumar , Ashwani Kumar Singh

引用次数: 0