Procedia CIRP最新文献_第3页

An advanced method to assess mechanical filtering effect of tactile coordinate-measuring system in dimensional measurement of additive manufacturing parts

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.013

Weidong Liu, Xiao Chen, Wenhan Zeng, Dawei Tang, Paul J. Scott, Xiangqian Jane Jiang, Shan Lou

{"title":"An advanced method to assess mechanical filtering effect of tactile coordinate-measuring system in dimensional measurement of additive manufacturing parts","authors":"Weidong Liu, Xiao Chen, Wenhan Zeng, Dawei Tang, Paul J. Scott, Xiangqian Jane Jiang, Shan Lou","doi":"10.1016/j.procir.2025.01.013","DOIUrl":"10.1016/j.procir.2025.01.013","url":null,"abstract":"<div><div>The primary challenge faced by tactile coordinate-measuring systems (CMS) in dimension metrology of additive manufacturing (AM) components is the CMS mechanical filtering effect – an offset error caused by finite tip size working on the rough surface texture of AM parts. We previously simulated the mechanical filtering effect of physical measurements by applying morphological opening/closing operations to the surface profile. However, because this method only focuses on the profile, the impact of surrounding surface topography was ignored. Consequently, the dimension offset can be underestimated up to a quarter of the deviation as observed in physical measurements. In this work, we propose an advanced method to optimise and preprocess the surface data such that the simulation of 3D surface morphological filtering is enabled even using the profile algorithm. The results showed that the proposed method can compensate up to 94% of the dimension offset of the CMS mechanical filtering effect.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 74-79"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511914","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

Advanced cutting tools for edge trimming of carbon fibre reinforced composites (CFRP)

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.012

Francisco Matos , Tiago E.F. Silva , Bruno Guimarães , Rúben D.F.S Costa , Daniel Figueiredo , Carlos Saraiva , Abílio M.P. de Jesus , Ana R. Reis

{"title":"Advanced cutting tools for edge trimming of carbon fibre reinforced composites (CFRP)","authors":"Francisco Matos , Tiago E.F. Silva , Bruno Guimarães , Rúben D.F.S Costa , Daniel Figueiredo , Carlos Saraiva , Abílio M.P. de Jesus , Ana R. Reis","doi":"10.1016/j.procir.2024.09.012","DOIUrl":"10.1016/j.procir.2024.09.012","url":null,"abstract":"<div><div>The use of carbon fibre reinforced polymers (CFRP) has transitioned towards applications with large-scale manufacturing with specific desired material characteristics, such as in the aerospace and automotive industries. Despite being manufactured in a near-net shape, machining of CFRP is often necessary to meet dimensional tolerances. The requirement to improve both the processing capability and production cost is heightening given the challenging cutting operations of CFRP, with common issues arising such as machining-induced delamination, poor surface finish and increased tool wear. Sharp polycrystalline diamond (PCD) tools are often employed during CFRP milling, however these are not economically practical due to their high cost, geometric construction limitation and inherent weakening of their geometry (due to relative low toughness and very sharp edges), leading to decreased tool longevity. Sharp diamond-coated carbide tools represent a cost-effective alternative to PCD tools. A novel approach is presented utilizing a high-thickness HF-CVD (Hot-Filament Chemical Vapor Deposition) diamond coated carbide milling tool, with laser sharpened edges, which was used for investigating the effect of coating on cutting force and surface quality of fibre reinforced composites. This paper is an introductory exploration of laser sharpened tools, focusing on their durability and performance. Instrumented experimental tests in contour milling operations demonstrated the increased cutting performance for achieving well-finished surfaces, with negligible rounding of the coated cutting edge. Future studies will compare these tools with standard PCD coated tools without laser sharpened edges to evaluate their relative advantages in machining applications during extensive tool wear tests, when machining abrasive materials, such as CFRP.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 56-61"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509376","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

Digital product passport enabled production control in the context of circular economy

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.037

Yannik Hermann , Christian Patlakis , Moritz Hörger , Marvin Carl May , Gisela Lanza

引用次数: 0

Study of liquid nitrogen cooled micro-milling of PEEK

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.008

Ni Chen , Yibo Jia , Xiang Li , Xingzhi Xiao , Jiawei Liu , Shun Weng , Ning He

引用次数: 0

Reference geometries and indicators for the process window development of wire Directed Energy Deposition

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.016

Konstantinos Tzimanis , Nikolas Porevopoulos , Nikolas Bourlesas , Panagiotis Stavropoulos

引用次数: 0

Long-pulse fibre laser micro-hole drilling of nickel superalloy

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.007

Mitchell Leering , Chris Ellis , Annie Kerwin , Sundar Marimuthu

{"title":"Long-pulse fibre laser micro-hole drilling of nickel superalloy","authors":"Mitchell Leering , Chris Ellis , Annie Kerwin , Sundar Marimuthu","doi":"10.1016/j.procir.2025.01.007","DOIUrl":"10.1016/j.procir.2025.01.007","url":null,"abstract":"<div><div>The laser drilling process represents state-of-the-art technology for producing components with micro-holes across various engineering sectors, from hybrid laminar flow control in aerospace to electrodes in hydrogen systems. Various types of lasers are used to create micro-holes, ranging from long-pulse fibre lasers (multi-mode or single-mode) to short and ultra-short pulse lasers. This research focuses on understanding the characteristics of micro-hole (<100 µm) drilling in 1 mm thick nickel superalloy using a long pulse (millisecond) multi-mode quasi-continuous-wave fibre laser with a fibre core diameter of 50 µm and a focus spot size of 35 µm. The effects of various process parameters on drilling performance have been evaluated, and a high-speed camera has been used to gain a detailed understanding of the process. The results of this study have been compared with our previous work on high-power multi-mode laser drilling (fibre diameter of 100 µm and focus spot size of 75 µm) and single-mode fibre laser drilling (fibre diameter of 15 µm and focus spot size of ~15 µm). Despite significant variations in focus spot beam sizes across different laser setups, the optimised minimum hole diameters for millisecond pulse laser drilling of 1-2 mm thick nickel alloy remained consistently in the range of ~70-80 µm, suggesting that heat conduction and melting phenomena play a critical role in determining hole size.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 37-42"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511032","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

Application of generative AI technologies to engineering design

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.025

Daniel Byrne , Vincent Hargaden , Nikolaos Papakostas

引用次数: 0

Manufacturing and Defect Characterization of Rotationally Molded Hybrid Composite Drive Shafts

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.003

Patrick Schaible , Daniel Büchner , Sebastian Schabel , Jürgen Fleischer

{"title":"Manufacturing and Defect Characterization of Rotationally Molded Hybrid Composite Drive Shafts","authors":"Patrick Schaible , Daniel Büchner , Sebastian Schabel , Jürgen Fleischer","doi":"10.1016/j.procir.2024.09.003","DOIUrl":"10.1016/j.procir.2024.09.003","url":null,"abstract":"<div><div>One way of reducing greenhouse gas emissions is the consistent use of lightweight design. By reducing the moving mass, energy requirements can be lowered. Fibre-reinforced plastic composites are particularly suitable for lightweight components with very high mechanical requirements and a long service life. This article presents the production and investigation the influence of manufacturing process parameters on the defects of rotationally moulded parts using the example of a drive shaft. The hybrid components are manufactured using a rotational moulding process in which braided preforms and load introduction elements are processed in a single step. The elements are intimately bonded by a thermosetting matrix under the influence of temperature and centrifugal force. Different process parameters such as rotational speed, matrix temperature, mould temperature and mould unbalance are varied and the influence on the component properties are investigated. Furthermore, a catalogue of characteristics for the classification of manufacturing defects is created. It can be shown that different types of defects occur along the process chain and suitable measurements to minimize the defects are proposed.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 1-6"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509367","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

Experimental study on drilling machinability of CFRP: Tool geometry, hole quality and process monitoring analysis

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.016

Iker Urresti Espilla , Martin Telleria , Iñigo Llanos , Luis Norberto López de Lacalle

{"title":"Experimental study on drilling machinability of CFRP: Tool geometry, hole quality and process monitoring analysis","authors":"Iker Urresti Espilla , Martin Telleria , Iñigo Llanos , Luis Norberto López de Lacalle","doi":"10.1016/j.procir.2024.09.016","DOIUrl":"10.1016/j.procir.2024.09.016","url":null,"abstract":"<div><div>Due to their lightweight and high strength properties, components made of CFRP play a fundamental role in the aerospace industry. Hole-making of these parts is usually required for the following assembly process, with the drilling process of composite parts being one of the most important and critical manufacturing process steps. However, due to the non-homogeneous anisotropic nature of the material and highly abrasive and hard reinforced fibers, CFRP is usually regarded as difficult-to-machine material. Several drilling-induced defects can arise such as delamination, fiber pull-out and uncut fibers, burrs or micro cracking, leading to the rejection of costly aerospace parts. A correct choice of cutting tools and conditions is essential in addition to process monitoring techniques for ensuring desired hole quality. In this context, the present work presents an experimental work where the benchmarking of two cutting tool geometries and cutting conditions are carried out to analyze their effect on the drilled holed quality. Additionally, a novel cutting force-based process monitoring analysis is presented for online hole damage identification, focusing on cutting tool entry and exit regimes. Based on the results of this study, optimum cutting geometries are identified, and the importance of the tool point geometry and tool wear are highlighted as the main aspects affecting the generation of push-out delamination defects. Within this context, the suitability of twist drills with higher point angles is observed, achieving high quality holes. Hence, the present work introduces a drilling process optimization methodology applicable to aerospace assembly industrial processes.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 80-85"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509258","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

Advanced allowance planning of CFRP composites exploiting the pattern of chopped carbon fibre reinforcement clusters

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.021

Norbert Geier , Gergely Magyar

{"title":"Advanced allowance planning of CFRP composites exploiting the pattern of chopped carbon fibre reinforcement clusters","authors":"Norbert Geier , Gergely Magyar","doi":"10.1016/j.procir.2024.09.021","DOIUrl":"10.1016/j.procir.2024.09.021","url":null,"abstract":"<div><div>Conventional allowance planning of carbon fibre-reinforced polymer composite plates that must be mechanically machined is based on mainly the analysis of the precision of composite manufacturing technologies. This approach neglects the impact of randomly oriented and positioned chopped fibre reinforcement clusters leading to unpredictable fibre cutting angles and inconsistent quality during machining. To address this issue, we developed an innovative allowance planning method for polymer composites reinforced with chopped fibres. Our approach optimizes the size of the non-uniform allowance to minimize machining-induced burrs on the machined edges by detecting fibre reinforcement clusters on the composite surface through digital image processing and employing a convolution-based optimization of geometric feature patterns. Validation through drilling experiments demonstrated that our method improved the average burr factor by 50% compared to a conventional allowance planning technique. Although the proposed method is recommended to be improved to manage the effects of three-dimensional fibre clusters on burr occurrence, it encourages a novel direction in allowance planning of composites having non-defined directional reinforcements.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 130-135"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509264","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