International Journal of Advanced Manufacturing Technology最新文献_第9页

Effects of peening conditions and sheet geometry on spherical to cylindrical deformation shifts 强化条件和板材几何形状对球形到圆柱形变形转变的影响

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13387-0

{"title":"Effects of peening conditions and sheet geometry on spherical to cylindrical deformation shifts","authors":"","doi":"10.1007/s00170-024-13387-0","DOIUrl":"https://doi.org/10.1007/s00170-024-13387-0","url":null,"abstract":"<h3>Abstract</h3> <p>Peen forming is a method for deforming metal sheets by introducing plastic strain near the peened surface through shot impacts. The resulting shape after peen forming is affected by peening conditions (such as shot velocity, shot diameter, and nozzle trajectory) and the specimen size. This study aimed to clarify the mechanism of the spherical to cylindrical deformation shift in peen forming, through experiments and numerical simulations using the finite element method by varying the specimen geometry, nozzle trajectory, and air pressure. The deformation of sheets, 200 mm × 200 mm × 2 mm (length, width, thickness), shifted from spherical to cylindrical at an approximate curvature of 0.4 m<sup>−1</sup>. These shifts occurred at smaller curvatures in wider specimens. Numerical simulation using a three-step finite element method was used to calculate the spherical to cylindrical deformation shift. The simple spherical bending model showed that the deformation shifted from spherical to cylindrical, when the strain in the center of the thickness at the edge of the sheet was compressive. This result was consistent with the experimental and numerical simulation results.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"122 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time surface roughness estimation and automatic regrinding of ground workpieces using a data-driven model and grinding force inputs 利用数据驱动模型和磨削力输入，实时估算表面粗糙度并自动修磨磨削过的工件

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13434-w

Jing-Yu Lai, Pei-Chun Lin

{"title":"Real-time surface roughness estimation and automatic regrinding of ground workpieces using a data-driven model and grinding force inputs","authors":"Jing-Yu Lai, Pei-Chun Lin","doi":"10.1007/s00170-024-13434-w","DOIUrl":"https://doi.org/10.1007/s00170-024-13434-w","url":null,"abstract":"<p>This study reports a methodology for predicting surface roughness using data-driven models with grinding force as the input data. Prior to the model training process, the critical grinding parameters for brass material were selected and optimized using the Taguchi method. The experimental grinding force data were then collected and preprocessed into three features: the raw feature as the baseline feature, the statistical feature, and the fast Fourier transform (FFT) feature. The data were imported into a linear regression model as the baseline model and a deep neural network (DNN) model as the proposed strategy. The widely used surface roughness (Ra) of the ground workpiece was experimentally measured and served as the performance index. The model’s performance was evaluated based on the mean absolute percentage error (MAPE) between the predicted and measured Ra values. The validation of the Ra prediction revealed that, among all test combinations, the DNN model with four hidden layers and the FFT feature as the input had the best performance of surface roughness prediction, with a MAPE of 3.17%. The independent testing and evaluation of the DNN model with the FFT feature yielded a MAPE of 6.96%, indicating that the proposed strategy effectively predicted the surface roughness of the workpiece. This work also proposes an automatic regrinding strategy in which the grinding system automatically regrinds the workpiece if the predicted Ra of the workpiece in the previous grinding process exceeds the threshold. Experimental results confirmed that among 24 ground areas, two areas have roughness exceeding the threshold and need to be regrind, and the proposed strategy can correctly identify and regrind these two areas (100% success rate). After automatic regrinding, the workpiece exhibited a roughness lower than the set threshold.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"148 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140173140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Joining of AA5052 to CF/PEEK by friction lap welding 通过摩擦搭接焊将 AA5052 与 CF/PEEK 焊接在一起

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13457-3

Jamal Sheikh-Ahmad, Redouane Zitoune, Claire Morel, Jean-François Ferrero, Benoit Vieille

{"title":"Joining of AA5052 to CF/PEEK by friction lap welding","authors":"Jamal Sheikh-Ahmad, Redouane Zitoune, Claire Morel, Jean-François Ferrero, Benoit Vieille","doi":"10.1007/s00170-024-13457-3","DOIUrl":"https://doi.org/10.1007/s00170-024-13457-3","url":null,"abstract":"<p>The joining of aluminum alloy AA5052 and carbon-fiber-reinforced polyether ether ketone (CF/PEEK) by friction lap welding was investigated under different conditions of surface texturing and process temperatures. The joint quality was evaluated by measurement of the tensile shear force and examination of the joint morphology. The aluminum alloy underwent two different types of surface texturing—mechanical engraving and sandblasting. The welding experiments were then conducted under different tool rotational speeds for each. The temperatures across the weld line were measured during the welding process using thermocouples mounted at specific locations. The temperature distribution at the interface was determined by an inverse heat conduction method. It was found that the temperatures at the interface exceeded the melting temperature of PEEK for all testing conditions but was always below PEEK thermal degradation temperature. It was also found that joint performance of mechanically engraved samples increased with the increase of interface temperatures. This was attributed to the increased mechanical interlocking due to the flow of melted PEEK into the engraved sample’s surface features. The joint strength of sandblasted samples did not change considerably with interface temperatures.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"26 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of a tetrahedron compliant spherical joint via computer-aided engineering tools 通过计算机辅助工程工具优化四面体顺应性球形接头

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13314-3

Seyyed Masoud Kargar, Alberto Parmiggiani, Mario Baggetta, Emilio Ottonello, Guangbo Hao, Giovanni Berselli

{"title":"Optimization of a tetrahedron compliant spherical joint via computer-aided engineering tools","authors":"Seyyed Masoud Kargar, Alberto Parmiggiani, Mario Baggetta, Emilio Ottonello, Guangbo Hao, Giovanni Berselli","doi":"10.1007/s00170-024-13314-3","DOIUrl":"https://doi.org/10.1007/s00170-024-13314-3","url":null,"abstract":"<p>This article focuses on enhancing the range of motion (ROM) of the Tetra II joint, a spherical compliant joint consisting of three internally interconnected tetrahedron-shaped elements that achieve motion through elastic deformation. Despite its excellent precision, this specific design is constrained in terms of ROM due to internal contacts among the tetrahedral elements. To overcome this limitation, this study utilizes a computer-aided engineering (CAE) framework to optimize the configuration of the Tetra II joint and enhance its ROM. The resultant optimized joint, referred to as Tetra III, is subsequently compared to Tetra II in terms of both ROM and center shift. Finite element models (FEM) are employed to validate the optimization results and examine how various tetrahedron-shaped geometries impact the joint’s performance. The newly optimized joint exhibits a significantly higher ROM compared to the previous version, while maintaining excellent precision and overall smaller dimensions. Finally, to demonstrate its manufacturability, the Tetra III joint is produced using selective laser sintering (SLS) technology, with Duraform PA serving as the construction material. The successful fabrication serves as a demonstrative example of the improved design of the Tetra III joint.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"40 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and optimization of a prediction system model for mechanical properties in rotary friction-welded polyamide joints using the SVM approach and GA optimization 利用 SVM 方法和 GA 优化技术开发和优化旋转摩擦焊接聚酰胺接头机械性能预测系统模型

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13450-w

Elhadj Raouache, Aissa Laouissi, Fares Khalfallah, Yazid Chetbani

{"title":"Development and optimization of a prediction system model for mechanical properties in rotary friction-welded polyamide joints using the SVM approach and GA optimization","authors":"Elhadj Raouache, Aissa Laouissi, Fares Khalfallah, Yazid Chetbani","doi":"10.1007/s00170-024-13450-w","DOIUrl":"https://doi.org/10.1007/s00170-024-13450-w","url":null,"abstract":"<p>The objective of this experimental study is to utilize rotary friction welding (FW) for assembling similar polyamide materials. The application of the SVM approach enables the development of a predictive model for estimating mechanical properties in RFW processes. Furthermore, the optimization of RFW parameters through GA proves pivotal in selecting optimal welding conditions, providing a variety of choices. The welding parameters considered in this study included rotation speed at five levels and traverse speed at three levels. The strength of the welded samples was characterized by a tensile test. Additionally, temperature measurements were taken to determine the maximum temperature in the joint area. The results demonstrated the dependence of tensile strength and maximum temperature on the rotation speed. Maximum tensile strength is achieved at an optimal rotation speed. Moreover, analysis of variance (ANOVA) indicates that rotation speed is the parameter most influenced by tensile strength.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"122 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrosion characteristics of high-entropy alloys prepared by spark plasma sintering 火花等离子烧结法制备的高熵合金的腐蚀特性

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13452-8

Chika Oliver Ujah, Daramy V. V. Kallon, Victor Sunday Aigbodion

{"title":"Corrosion characteristics of high-entropy alloys prepared by spark plasma sintering","authors":"Chika Oliver Ujah, Daramy V. V. Kallon, Victor Sunday Aigbodion","doi":"10.1007/s00170-024-13452-8","DOIUrl":"https://doi.org/10.1007/s00170-024-13452-8","url":null,"abstract":"<p>High-entropy alloys (HEAs) are special type of alloy suitably developed for use in petroleum exploration, energy storage devices, medical implants, etc. This is because they possess excellent corrosion, thermal, and mechanical properties. Corrosion characteristic of HEAs prepared via spark plasma sintering is a top notch as the technique generates corrosion resistant phases and homogenous microstructure. This study was aimed at reviewing recent publications on corrosion characteristics of HEAs processed by SPS in order to develop ways of improving their anti-corrosion properties. The resource materials were obtained from Scopus-indexed journals and Google Scholar websites of peer-reviewed articles published within the last 5 years. From the study, it was revealed that incorporation of some elements (Al, Cr, Ti) into HEAs can improve their corrosion resistance, while addition of some others can reduce their brittleness and enhance their stability and formability. It was recommended that optimization of SPS parameters was one of the strategies of generating better corrosion characteristics in HEAs.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"2014 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An experimental methodology to characterize load-based fracture models of third generation advanced high strength steel resistance spot welds 表征第三代先进高强度钢电阻点焊基于载荷的断裂模型的实验方法

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13438-6

Mohammad Shojaee, Cameron Tolton, Abdelbaset Midawi, Tingting Zhang, Hassan Ghassemi-Armaki, Michael Worswick, Cliff Butcher, Elliot Biro

{"title":"An experimental methodology to characterize load-based fracture models of third generation advanced high strength steel resistance spot welds","authors":"Mohammad Shojaee, Cameron Tolton, Abdelbaset Midawi, Tingting Zhang, Hassan Ghassemi-Armaki, Michael Worswick, Cliff Butcher, Elliot Biro","doi":"10.1007/s00170-024-13438-6","DOIUrl":"https://doi.org/10.1007/s00170-024-13438-6","url":null,"abstract":"<p>Failure of resistance spot welds in computer-aided engineering models is based upon criteria that incorporate test data obtained in various loading conditions including different proportions of tensile, shear, and moment loads. The decomposition of the critical load into its respective shear, tensile, and bending moment components is influenced by the rigid body motion during their corresponding mechanical tests. Continuous tracking of the weld orientation and the deformed coupons is required for accurate determination of the load components at the onset of failure. A comprehensive experimental investigation was performed to characterize the critical failure load components in combined loading using various orientations of KS-II tests and a range of coach peel coupon geometries. Mechanical testing was coupled with digital image correlation (DIC) to systematically evaluate empirical force-based failure models for resistance spot welds of two third generation advanced high strength steels with optimal and suboptimal fusion zone diameters. New analysis methodologies using DIC were developed to account for rotation and deformation of the joint in the determination of the shear, normal, and bending moments acting on the spot-welded joints. The coach peel test results for both steels revealed a non-convex experimental fracture locus in bending-tension loading cases. The conventional assumption of a convex failure locus overestimated the critical bending moment strength between 7 and 66%. Results indicated that changes in the operative failure mechanism from pullout/partial-pullout to interfacial can expand the fracture loci within the shear-tensile loading mixities. Improved alternative functional forms for the weld failure models were proposed and contrasted with conventional models that assume convexity.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"2014 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical modeling of fill-level and residence time in starve-fed single-screw extrusion: a dimensionality reduction study from a 3D CFD model to a 2D convection-diffusion model 饥饿喂料单螺杆挤压过程中填充水平和停留时间的数值建模：从三维 CFD 模型到二维对流扩散模型的降维研究

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13378-1

Erik Holmen Olofsson, Ashley Dan, Michael Roland, Ninna Halberg Jokil, Rohit Ramachandran, Jesper Henri Hattel

{"title":"Numerical modeling of fill-level and residence time in starve-fed single-screw extrusion: a dimensionality reduction study from a 3D CFD model to a 2D convection-diffusion model","authors":"Erik Holmen Olofsson, Ashley Dan, Michael Roland, Ninna Halberg Jokil, Rohit Ramachandran, Jesper Henri Hattel","doi":"10.1007/s00170-024-13378-1","DOIUrl":"https://doi.org/10.1007/s00170-024-13378-1","url":null,"abstract":"<p>This research delves into the numerical predictions of fill-level and residence time distribution (RTD) in starve-fed single-screw extrusion systems. Starve-feeding, predominantly used in ceramic extrusion, introduces challenges which this study seeks to address. Based on a physical industrial system, a comprehensive 3D computational fluid dynamics (CFD) model was developed using a porous media representation of the complex multi-hole plate die. Validations performed using real sensor data, accounting for partial wear on auger screw flights, show an ~11% discrepancy without accounting for screw wear and ~6% when considering it. A 2D convection-diffusion model was introduced as a dimensionality reduced order model (ROM) with the intention of bridging the gap between comprehensive CFD simulations and real-time applications. Central to this model’s prediction ability was both the velocity field transfer from the CFD model and calibration of the ROM diffusion coefficient such that a precise agreement of residence time distribution (RTD) curves could be obtained. Some discrepancies between the CFD and the ROM were observed, attributed to the loss of physical information of the system when transitioning from a higher fidelity CFD model to a semi-mechanistic ROM and the inherent complexities of the starved flow in the compression zone of the extruder. This research offers a comprehensive methodology and insights into reduced order modeling of starve-fed extrusion systems, presenting opportunities for real-time optimization and enhanced process understanding.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"24 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of critical process control parameters in MEX additive manufacturing of high-performance polyethylenimine: energy expenditure, mechanical expectations, and productivity aspects 高性能聚乙烯亚胺 MEX 增材制造关键工艺控制参数的优化：能量消耗、机械预期和生产率方面的问题

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-19 DOI: 10.1007/s00170-024-13418-w

Nectarios Vidakis, Markos Petousis, Mariza Spiridaki, Nikolaos Mountakis, Amalia Moutsopoulou, Emmanuel Kymakis

{"title":"Optimization of critical process control parameters in MEX additive manufacturing of high-performance polyethylenimine: energy expenditure, mechanical expectations, and productivity aspects","authors":"Nectarios Vidakis, Markos Petousis, Mariza Spiridaki, Nikolaos Mountakis, Amalia Moutsopoulou, Emmanuel Kymakis","doi":"10.1007/s00170-024-13418-w","DOIUrl":"https://doi.org/10.1007/s00170-024-13418-w","url":null,"abstract":"<p>The demand for 3D-printed high-performance polymers (HPPs) is on the rise across sectors such as the defense, aerospace, and automotive industries. Polyethyleneimine (PEI) exhibits exceptional mechanical performance, thermal stability, and wear resistance. Herein, six generic and device-independent control parameters, that is, the infill percentage, deposition angle, layer height, travel speed, nozzle temperature, and bed temperature, were quantitatively evaluated for their impact on multiple response metrics related to energy consumption and mechanical strength. The balance between energy consumption and mechanical strength was investigated for the first time, contributing to the sustainability of the PEI material in 3D printing. This is critical considering that HPPs require high temperatures to be built using the 3D printing method. PEI filaments were fabricated and utilized in material extrusion 3D printing of 125 specimens for 25 different experimental runs (five replicates per run). The divergent impacts of the control parameters on the response metrics throughout the experimental course have been reported. The real weight of the samples varies from 1.06 to 1.82 g (71%), the real printing time from 214 to 2841 s (~ 1300%), the ultimate tensile strength from 15.17 up to 80.73 MPa (530%), and the consumed energy from 0.094 to 1.44 MJ (1500%). The regression and reduced quadratic equations were validated through confirmation runs (10 additional specimens). These outcomes have excessive engineering and industrial merit in determining the optimum control parameters, ensuring the sustainability of the process, and the desired functionality of the products.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"2014 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ repairing of continuous fiber-reinforced thermoplastic composite via multi-axial additive manufacturing 通过多轴向增材制造对连续纤维增强热塑性复合材料进行原位修复

IF 3.4 3区工程技术

International Journal of Advanced Manufacturing Technology Pub Date : 2024-03-18 DOI: 10.1007/s00170-024-13381-6

{"title":"In situ repairing of continuous fiber-reinforced thermoplastic composite via multi-axial additive manufacturing","authors":"","doi":"10.1007/s00170-024-13381-6","DOIUrl":"https://doi.org/10.1007/s00170-024-13381-6","url":null,"abstract":"<h3>Abstract</h3> <p>The conventional repairing of CFRP (continuous fiber-reinforced polymer composites) includes complicated steps of patching, splicing, repairing, and post-curing. Intensive labor work needs to be conducted, and poor surface quality and weak interfacial adhesion are usually observed. This work mainly introduces an in situ online repairing method using AM (additive manufacturing) facilitated composite fabrication. With the advances of the robotic-assisted AM process, the surface roughness and accuracy during the repairing process can be evaluated online upon layer-by-layer process. In order to fulfill the efficient and on-site requirements for repairing damage in structural components, this study explores the method including in situ repairing, laser point clouds online collection, and repairing path planning based on multi-axial additive manufacturing of composites. A repair algorithm is proposed incorporating point clouds collection, measurement evaluation, and path planning. Furthermore, relevant mechanical measurements have been conducted, so as to assess the interface degree of recovery. A rapid online evaluation and surface conformal repairing method have been proposed to overcome the technical bottleneck of in situ automatic repairing of damaged composites. It expands the application of multi-axial robot-assisted CFRP AM.</p>","PeriodicalId":50345,"journal":{"name":"International Journal of Advanced Manufacturing Technology","volume":"57 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140156646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0