{"title":"Stress analysis and microstructure-property evaluation of grid-path wire arc additive repair grate plates","authors":"He Tianying , Yu Shengfu , Li HuaWei , Qiu Yuan","doi":"10.1016/j.cirpj.2025.05.016","DOIUrl":"10.1016/j.cirpj.2025.05.016","url":null,"abstract":"<div><div>For the wire arc additive repair of high-chromium cast iron (HCCI) grate plates, a novel grid-based path planning method was proposed. The method employs the direct projection technique to generate surface meshes on the point cloud, followed by variable-attitude oscillatory filling. The low-carbon steel grid used during the repair effectively inhibits crack propagation in HCCI, preventing the spalling of the deposited metal. Comparative analysis of stress distributions among the zigzag, contour offset and grid path planning revealed that the grid path reduced peak stress and variance by 29.8 % and 9.6 %, respectively. The microstructure of the HCCI grate plate body consists of primary austenite and martensite. Martensitic transformation occurs at the interface between eutectic carbides and primary austenite, where lath martensite encapsulates the eutectic carbides. Both primary carbides and eutectic carbides exhibit a hexagonal close-packed structure with similar crystallographic characteristics. The M<sub>7</sub>C<sub>3</sub> carbides formed a robust wear-resistant framework, preventing abrasive particles from penetrating the matrix and reducing continuous sliding on the wear surface. Primary austenite provided critical structural support, preventing carbide detachment and significantly improving the material’s wear resistance. At 750 °C, the wear rate of the deposited metal was measured at 2.02 %, while at room temperature, it was 1.46 %. Both rates were significantly lower than the 3.71 % wear rate of the deposited metal on the currently used grate plates. The wear surface of HCCI exhibits numerous plow grooves, microcracks, and carbide spalling, which generate abrasive particles and accelerate wear. The dominant wear mechanism is a combination of micro-cutting and fracture-induced spalling.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"61 ","pages":"Pages 19-34"},"PeriodicalIF":4.6,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sen-Lin Ma , Tao Huang , Marian Wiercigroch , Yao Yan , Xiao-Ming Zhang , Han Ding
{"title":"Effect of workpiece vibration on dynamic cutting force in thin-walled plates trimming","authors":"Sen-Lin Ma , Tao Huang , Marian Wiercigroch , Yao Yan , Xiao-Ming Zhang , Han Ding","doi":"10.1016/j.cirpj.2025.05.013","DOIUrl":"10.1016/j.cirpj.2025.05.013","url":null,"abstract":"<div><div>In trimming of long overhanging thin-walled plates, we observed that the cutting force along the tool axis can be bidirectional rather than unidirectional like milling of short and stiff overhanging plates. This experimental phenomenon cannot be explained by standard oblique cutting force models. Accordingly, this study systematically investigated the interaction mechanism between the tool and the workpiece during trimming. It turned out that vibration velocity and displacement of the workpiece have non-ignorable effects on the direction of cutting velocity, engagement position between tool and workpiece, resulting in state-dependent inclination angle, instantaneous rotation angle and time delay. Consequently, a dynamic cutting force model that incorporates workpiece vibration-based modulation effects was developed, which effectively captured the change in the direction of cutting force along the tool axis. Furthermore, both simulation and experimental results demonstrated that workpiece vibration can reduce the amplitude of cutting force compared to rigid trimming. Additionally, surface comparisons of the workpieces after trimming were conducted, showing no obvious difference between short and long overhanging workpieces. This indicated that long overhanging thin-walled workpieces can be a feasible choice for trimming under certain conditions. These new findings offer new insights for trimming of thin-walled structures in industry.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"61 ","pages":"Pages 35-50"},"PeriodicalIF":4.6,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A multi-segment two-point receptance coupling method for FRF prediction of holder–tool assemblies","authors":"Yuan-Yuan Ren, Min Wan, Wei-Hong Zhang","doi":"10.1016/j.cirpj.2025.05.006","DOIUrl":"10.1016/j.cirpj.2025.05.006","url":null,"abstract":"<div><div>This study presents a multi-segment two-point coupling method for predicting the frequency response functions (FRFs) of a holder–tool assembly. The assembly is modeled as a structure consisting of two substructures—an outer tube and an embedded inner cylinder—with a coincident neutral axis, and is then divided axially into multiple segments. For each assembly segment, the FRFs of its substructural components, i.e., the tube and cylinder segments, are theoretically calculated using Timoshenko beam theory. A new receptance coupling principle is established at the two endpoints of each assembly tube and cylinder segment based on their deformation and compatibility conditions. The overall FRFs for each assembly segment are synthesized from the theoretically calculated values of its corresponding tube and cylinder segments. By employing classical receptance coupling substructure analysis (RCSA), the FRFs of the entire assembly are obtained by coupling the individual segment FRFs. Unlike traditional multi-point coupling methods, which generate intermediate matrices strongly dependent on the number of coupling points, the proposed method yields a fixed 4 × 4 intermediate matrix, fully independent of the coupling points. This feature simplifies the calculation procedure to a summation across all segments, eliminating the need for complex iterations required by conventional methods. The proposed method is numerically validated and experimentally verified.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"61 ","pages":"Pages 1-18"},"PeriodicalIF":4.6,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongchang Sun , Jiancheng Zhao , Zhongpeng Zheng , Yongxiang Jiang , Xin Jin , Sanpeng Deng , Youliang Tang , Xiaoxiao Zhang
{"title":"A review of the deformation mechanism and control of low stiffness thin-walled parts","authors":"Hongchang Sun , Jiancheng Zhao , Zhongpeng Zheng , Yongxiang Jiang , Xin Jin , Sanpeng Deng , Youliang Tang , Xiaoxiao Zhang","doi":"10.1016/j.cirpj.2025.05.007","DOIUrl":"10.1016/j.cirpj.2025.05.007","url":null,"abstract":"<div><div>Thin-walled components, known for their lightweight and high-performance characteristics, hold significant strategic importance in industries such as aerospace, radar, and transportation. However, due to their inherently low stiffness—encompassing shear, bending, and torsional stiffness—these components are highly susceptible to deformation during machining. This deformation can adversely affect the geometric integrity and machining precision of the component, including dimensional accuracy, shape accuracy, and positional accuracy. Controlling the deformation of thin-walled components has thus become a critical research focus in recent years. This paper reviews the latest developments in the types of machining deformation, deformation mechanisms, and deformation control strategies for thin-walled components, aiming to equip readers with dynamic approaches for achieving high efficiency and precision in thin-walled component machining. The first section provides an overview of the definition, classification, and factors affecting the machining accuracy of thin-walled components. The second section discusses the mechanisms behind the deformation of thin-walled components, which result from a combination of multiple factors, including deformation caused by cutting forces, cutting temperature, residual stress, fixturing, and machining chatter. The third section reviews several methods for controlling deformation, including adaptive machining and error compensation, stability lobe diagrams and chatter suppression, deformation prediction and control, and energy field-assisted machining. These methods allow for the control and prevention of thin-walled component deformation before, during, and after machining. Finally, the paper summarizes the current challenges in thin-walled component machining and outlines future development trends. The research content and methods introduced in this paper, including theoretical analysis, experimental validation, and simulation analysis, provide researchers with a clear background and research roadmap, contributing to the exploration and improvement of high-precision machining techniques for thin-walled components in future research.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 322-355"},"PeriodicalIF":4.6,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanochemical effect-assisted ultrasonic grinding of functional microgrooves on zirconia denture surface","authors":"Yu Zhang , Chunyu Chen , Feng Feng , Jianjian Wang , Pingfa Feng","doi":"10.1016/j.cirpj.2025.05.008","DOIUrl":"10.1016/j.cirpj.2025.05.008","url":null,"abstract":"<div><div>Inspired by natural teeth, texturing groove-type microstructures on zirconia implant dentures is an efficient approach to enhance their tribological and antibacterial performances. However, the current surface texturing methods for zirconia ceramic dentures, primarily laser ablation or grinding, often induce severe surface damage due to their high hardness. In this study, a coating-assisted rotary ultrasonic grinding (CUG) process is proposed to fabricate microgrooves on zirconia ceramic. This method aims to improve surface quality by leveraging the local embrittlement caused by the mechanochemical effects of the coating and ultrasonic vibration. A series of surface texturing, grinding, and nanoindentation tests are conducted to evaluate the process performance and underlying mechanism of the CUG. The results demonstrate that compared to conventional grinding (CG), CUG can reduce the surface roughness of the microgrooves by an average of 73.4 % and decrease the cutting force by an average of 72.7 %. The process mechanism of CUG can be attributed to the synergistic effects between the surface coating and ultrasonic grinding, both causing local embrittlement of zirconia ceramics, increasing small local cracks, and reducing larger macro defects. Additionally, the effects of microgrooves on surface performance, including wettability, tribological behavior, and bacteria adhesion, are assessed. Compared to a smooth surface, the CUG textured surface exhibits excellent hydrophobic properties, the friction coefficient reduced by 50.6 %, and an increase in the bacteriostatic rate by 74.7 %.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 307-321"},"PeriodicalIF":4.6,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"System-level evaluation of productivity and quality in semiconductor frontend fabrication integrating product and process models","authors":"Maria Chiara Magnanini , Dragan Djurdjanovic , Riccardo Pomi , Tullio Tolio","doi":"10.1016/j.cirpj.2025.05.010","DOIUrl":"10.1016/j.cirpj.2025.05.010","url":null,"abstract":"<div><div>In semiconductor manufacturing, photolithography represents the core process of frontend fabrication as the quality outcome in terms of overlay errors depends entirely on it. Hence, particular attention is devoted to the inspection of each wafer layer, having 100 % measurements of markers distributed across a wafer with subsequent long inspection times. At the same time, process control is based on each layer’s overall measurements, discouraging companies from improving productivity by reducing inspection time. As a consequence, in this context, the product, process and system are extremely inter-related. Recent developments in joint product-process modelling show that robust model-based control coupled with optimal down-selection of measurement markers enables improved process control without decreasing the quality. However, when considering the system level effects, new dynamics should be accounted for in order to make decisions about production system configuration and operations. This paper proposes a novel analytical model for the evaluation of quality and productivity performance in manufacturing systems characterized by propagation of quality errors, process adaptation and alternative inspection policies. The proposed model is general, but particularly useful for the semiconductor sector. Application of this method to an industrial-scale semiconductor manufacturing system shows that when product-process-system are considered together, global optimal solutions can be achieved.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 296-306"},"PeriodicalIF":4.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A novel trajectory planning approach with torque and jerk constraints based on polynomial interpolation profile and adaptive iteration","authors":"Yifei Hu , Ming Sang , Huawei Duan","doi":"10.1016/j.cirpj.2025.05.009","DOIUrl":"10.1016/j.cirpj.2025.05.009","url":null,"abstract":"<div><div>This paper presents a novel adaptive iteration approach to trajectory planning for industrial robots, with bounded torque and jerk. The core of this approach is to construct a conservative velocity curve and iteratively increase the feasible velocity curve while adhering to kinematic and dynamic constraints. In this approach, a polynomial profile is given to achieve smooth velocity transitions between adjacent path points, effectively modeling the acceleration and deceleration processes. Based on this polynomial profile, a conservative velocity curve consisting of three stages—acceleration, constant velocity, and deceleration—is constructed. The velocity in the constant velocity stage and the number of path points involved in the acceleration and deceleration stages are determined using the bisection method. Subsequently, the velocity in the constant velocity stage of the conservative or the previous velocity curve is increased following the same way that constructs the conservative velocity curve. This process is repeated until the number of path points in all constant velocity stages is below a given threshold. The proposed approach can be implemented on complex geometric paths of a 6-DOF manipulator while satisfying all kinematic and dynamic constraints. Compared to the comparison method based on convex optimization, the proposed method can reduce the traversing time by 6.06 % and the computation time by 77.4 %.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 277-295"},"PeriodicalIF":4.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sonia C. García , Vincent Delos , Denis Teissandier , Grégory Nuel
{"title":"Tolerance allocation by means of the polyhedral based tolerance analysis method","authors":"Sonia C. García , Vincent Delos , Denis Teissandier , Grégory Nuel","doi":"10.1016/j.cirpj.2025.04.016","DOIUrl":"10.1016/j.cirpj.2025.04.016","url":null,"abstract":"<div><div>The imperfection in the geometry and size of mechanical parts can lead to problems of assemblability and/or overall functionality. Defining acceptable tolerances for these imperfections is challenging because they impact how well the machine works and how much it costs to manufacture. In addition, tolerances for different parts often influence each other, contributing to a resultant tolerance.</div><div>This article presents a novel approach to tolerance allocation in mechanical design using the prismatic polyhedral approach and simulated annealing optimization. The prismatic polyhedral method effectively models deviations in complex mechanisms, while simulated annealing is used to optimize tolerance values considering both cost and functional compliance.</div><div>Methods based on sets of constraints, such as the prismatic polyhedral approach, can handle over- and iso-constrained mechanisms and, since it is feature based, it allows to model dependencies between rotational and translational deviations. However, they are often limited by high computational costs. To address this, the proposed methodology introduces a strategy to reduce the complexity of the contact graph reduction process, improving computational efficiency without sacrificing accuracy. Additionally, a new indicator of system compliance – the tolerance of circumscription – is introduced. This indicator has physical meaning and helps the designer to assess whether the system meets its functional conditions, as well as whether the total tolerance stack-up can be increased or needs to be tightened.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 260-276"},"PeriodicalIF":4.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of dynamic pricing for variant production using reinforcement learning","authors":"Florian Stamer, Matthias Henzi, Gisela Lanza","doi":"10.1016/j.cirpj.2025.05.004","DOIUrl":"10.1016/j.cirpj.2025.05.004","url":null,"abstract":"<div><div>In the context of variant production, the increasing volatility and customer requirements challenge the profitability of manufacturers. A promising approach to mitigate these challenges could be a dynamic pricing. An intelligent design of a continuous delivery-time-price function allows customers to choose based on their preferences and demand may be shifted to level any peaks. This way, profit, service level, and capacity usage could be improved. This work develops a dynamic pricing model based on reinforcement learning applied to a use case of the automation industry. The results show that the dynamic pricing model performs better than current methods in practice.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 248-259"},"PeriodicalIF":4.6,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marco Wurster , Timon Feuerstein , Finn Bail , Marvin Carl May , Lihui Wang , Gisela Lanza
{"title":"Condition-aware capacity planning for agile hybrid disassembly systems in remanufacturing","authors":"Marco Wurster , Timon Feuerstein , Finn Bail , Marvin Carl May , Lihui Wang , Gisela Lanza","doi":"10.1016/j.cirpj.2025.04.008","DOIUrl":"10.1016/j.cirpj.2025.04.008","url":null,"abstract":"<div><div>Remanufacturing of used products is essential in the circular economy but faces challenges like high variant diversity and varying product states, requiring flexible production resources. Agile hybrid disassembly systems, combining manual and automated resources, offer a solution. These systems need a planning methodology to reconfigure capacity and structure effectively. This work proposes a foresighted condition-aware capacity planning method, using a mixed-integer linear optimization problem to adjust system capacity while minimizing costs. A capability-based framework models the hybrid system, considering product condition deviations. The system, tested on data grounded in a real industrial scenario, shows the benefits of frequent reconfiguration based on condition-aware planning.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 234-247"},"PeriodicalIF":4.6,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}