Procedia CIRP最新文献_第4页

Finite Element Modeling to Design Optimized TMD for Milling Tools

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.077

Mikel Etxebeste , Gorka Ortiz-de-Zarate , Iñaki M. Arrieta , Pedro J. Arrazola

引用次数: 0

Continuous carbon fiber reinforced filaments manufactured by a cost-effective and two-step impregnation approach

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.017

Jianling Lu , Rui Hong , Yuxin Zhang , Yunzhi Zhong , Guido Link , Luis Heinrich Wengenmayer , Jidong Li , Nanya Li

{"title":"Continuous carbon fiber reinforced filaments manufactured by a cost-effective and two-step impregnation approach","authors":"Jianling Lu , Rui Hong , Yuxin Zhang , Yunzhi Zhong , Guido Link , Luis Heinrich Wengenmayer , Jidong Li , Nanya Li","doi":"10.1016/j.procir.2025.01.017","DOIUrl":"10.1016/j.procir.2025.01.017","url":null,"abstract":"<div><div>Fused filament fabrication (FFF) based 3D printing of continuous carbon fiber-reinforced thermoplastic composites (C-CFRTP) has emerged as a new manufacturing method and offered new avenues for the design and fabrication of complex composite structures. To ensure printing quality and improve mechanical performance of composites, the prevailing approach is producing pre-impregnated filaments before 3D printing. However, current manufacturing methods of filaments still rely on traditional pultrusion approaches, necessitating high facility investment and resulting in elevated prices. Here, we propose a low-cost C-CFRTP filament manufacturing method utilizing a two-step impregnation process. To ensure high filament quality while maintaining compactness, we introduce a liquid-solid two-step impregnation method aimed at flattening carbon fiber bundles during impregnation to achieve thorough and uniform infiltration. We successfully fabricated carbon fiber reinforced polyamide (PA) prepreg filaments and analysed its impregnation and mechanical properties. This study holds significant implications for enhancing impregnation efficiency and reducing the cost of C-CFRTP.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 98-103"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on internal surface finishing of multi-cross channels

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.011

Jiang Guo , Qikai Li , Liang Wang , Pu Qin , Mingyang Lu , Chao Wang

{"title":"Research on internal surface finishing of multi-cross channels","authors":"Jiang Guo , Qikai Li , Liang Wang , Pu Qin , Mingyang Lu , Chao Wang","doi":"10.1016/j.procir.2025.01.011","DOIUrl":"10.1016/j.procir.2025.01.011","url":null,"abstract":"<div><div>The quality of the internal surface plays a crucial role in the performance of parts with complex structures, which are widely used in aerospace, biomedical, and other fields. However, due to poor accessibility, the uniformity of the internal surface of multi-cross channels are low after finishing with existing methods. To address this issue, this paper proposes a step-by-step abrasive flow machining method according to the characteristics of multi-cross channel structures. By flexibly setting the positions of inlets and outlets and adjusting finishing parameters in each step, the material removal rate in different sections of the multi-cross channels can be regulated. Guided by simulation results, the material removal rate in each section becomes consistent after successive steps, achieving uniform finishing of the entire channel. To verify this method, a separatable stainless-steel part with six crossed channels was finished under an inlet pressure of 10 MPa for 40 minutes by using SiC abrasive with a size of 75 μm. The internal surface roughness of the workpiece was reduced from 1.919 μm to less than 1 μm, with variation in each section controlled to less than 12%.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 62-67"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methodologies for connecting an external signal-processing unit for adaptive control in machining systems

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.010

P. Georgi , M. Richter , T. Reeber , K. Güzel , H.-C. Möhring

引用次数: 0

Experimental validation and 3D finite element modelling of scratch-induced deformation in Ti-6Al-4V alloy

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.003

Erkan Tur , Joseph Betts , Laurent Perge , Quanren Zeng , Alborz Shokrani

引用次数: 0

Process design for drilling of large diameter holes with cutting simulation

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.074

Takashi Matsumura , Shoichi Tamura

{"title":"Process design for drilling of large diameter holes with cutting simulation","authors":"Takashi Matsumura , Shoichi Tamura","doi":"10.1016/j.procir.2025.02.074","DOIUrl":"10.1016/j.procir.2025.02.074","url":null,"abstract":"<div><div>In manufacturing of aircraft structures, large diameter holes are machined during the assembly process, and portable self-feeding drill units are used for machining holes. Because torque becomes large in drilling of the large diameter hole, the drilling operations are repeated with increasing the diameter of pilot hole and drill in steps. The diameter of drills, then, should be determined in terms of the torque limit associated with the spindle speed. This paper presents a process design for drilling of the large diameter holes in a plate of titanium alloy. The cutting simulation is conducted to analyze torque for the diameters of drills with changing the pilot hole diameter. In the force model, a chip flow is interpreted as a stack of the orthogonal cutting inclined at a chip flow direction, which includes the cutting and the chip flow direction. The cutting models are given by the orthogonal cutting data acquired in the cutting tests. The force model is validated with the orthogonal cutting data. A sequential process is designed for drilling of the large diameter holes by referring to the torque limit with the maximum torque obtained in the cutting simulation. The diameters of pilot holes and drills to be employed are determined so that torques are below the torque limit for the spindle speeds. In terms of production rate, the diameters are also optimized to minimum the number of tool changes.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 430-435"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759168","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

A Predictive Method for Cumulative Tool Wear in Variable Cutting Speed Turning Operations

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.078

Andrea Abeni , Alessandro Metelli , Aldo Attanasio , José Outeiro , Gerard Poulachon

{"title":"A Predictive Method for Cumulative Tool Wear in Variable Cutting Speed Turning Operations","authors":"Andrea Abeni , Alessandro Metelli , Aldo Attanasio , José Outeiro , Gerard Poulachon","doi":"10.1016/j.procir.2025.02.078","DOIUrl":"10.1016/j.procir.2025.02.078","url":null,"abstract":"<div><div>This study investigates cumulative tool wear in turning operations, focusing on the machining of AISI 1045 steel. Tool wear is a critical factor in determining the overall efficiency of machining processes. While current standards such as ISO 3685 provide guidelines for constant cutting speed, real industrial applications frequently involve variable cutting speeds, which leads to cumulative tool wear. The aim of this research is to develop a robust method for predicting tool-life when using variable cutting speeds. The proposed method is based on conducting tool-life tests at constant speeds, followed by the plotting of empirical tool-wear curves for each speed. These curves are then combined to build a cumulative tool-wear model that accounts for variations in cutting speed throughout a machining cycle. Experimental tests were conducted using coated carbide tools, and the wear was monitored using flank wear width (VB) as the primary criterion. Results show that nonlinear effects, which are often presumed to complicate tool-life prediction under variable speeds, have a marginal impact on tool wear progression. The proposed method effectively predicts the useful tool-life by combining the wear curves from different cutting speeds, making it suitable for practical industrial applications. Validation through variable cutting speed tests confirmed the accuracy of this method, as the predicted tool-life closely matched the experimental results. This approach provides a reliable alternative for estimating tool-life in complex machining operations with varying cutting conditions.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 454-459"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759172","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

Tool-holder integrated printed piezoceramic sensors for process state classification and tool-wear progress evaluation in turning

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.066

Miguel Panesso , Jan Berthold , Lucas Hamm , Zongshuo Li , Welf-Guntram Drossel , Thomas Bergs

{"title":"Tool-holder integrated printed piezoceramic sensors for process state classification and tool-wear progress evaluation in turning","authors":"Miguel Panesso , Jan Berthold , Lucas Hamm , Zongshuo Li , Welf-Guntram Drossel , Thomas Bergs","doi":"10.1016/j.procir.2025.02.066","DOIUrl":"10.1016/j.procir.2025.02.066","url":null,"abstract":"<div><div>Tool condition monitoring strategies in turning processes, using multiple sensor sources to measure dynamic quantities (e.g., force, acoustic emissions, acceleration), has gained significant attention in conjunction with machine learning methods. As a novel approach, the introduction of printed piezoceramic thick films in machine tools allows the customization of sensor shape and placement, optimized to fit the tool holder’s geometry and process boundary conditions. This work proposes integration concepts using two configurations of printed piezoceramic sensors. This includes the use of a finite element simulation to estimate the generated electric charge from sensors on three locations on the tool holder, induced by transient mechanical loading. The design is validated under controlled mechanical loading and tested across various cutting conditions and tool-wear states. Signal information content from each sensor location, relative to different machining conditions, is assessed through recursive feature elimination and validated using dimensionality reduction. Finally, tool-wear progress is evaluated using the selected features.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 382-387"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759273","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

Effects of the Tool Microgeometry on Thermo-Mechanical Loads for Ti-6Al-4V Finishing Cutting Operations

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.076

Matthieu Paillard , Frédéric Rossi , Hélène Elias-Birembaux , Gérard Poulachon , Mathieu Ritou , Nicolas Maury

引用次数: 0

Experimental and model-based investigation of cutting mechanisms when ultrasonic-assisted machining SiCf/SiCm ceramic matrix composites

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.046

Mustapha Abouridouane , Thomas Bergs , Markus Meurer , Guido Wirtz

引用次数: 0