Journal of Manufacturing Science and Engineering-transactions of The Asme最新文献_第5页

An incremental self-excitation method for effectively identifying low-frequency frequency response function of milling robots 一种有效识别铣削机器人低频频响函数的增量自激励方法

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-10 DOI: 10.1115/1.4063155

Jiawei Wu, X. Tang, Shihao Xin, Chenyang Wang, F. Peng, R. Yan, Xinyong Mao

{"title":"An incremental self-excitation method for effectively identifying low-frequency frequency response function of milling robots","authors":"Jiawei Wu, X. Tang, Shihao Xin, Chenyang Wang, F. Peng, R. Yan, Xinyong Mao","doi":"10.1115/1.4063155","DOIUrl":"https://doi.org/10.1115/1.4063155","url":null,"abstract":"\u0000 Robotic machining efficiency and accuracy are limited by milling vibration and chatter. Robot dynamic characteristics are strongly dependent on the poses; therefore, acquiring the robot dynamic characteristics in any pose is important for vibration suppression and chatter avoidance in large-range machining. This paper proposes an incremental self-excitation method for effectively identifying low-frequency frequency response functions (FRF) of milling robots. A fully knowable and controllable excitation increment can be achieved by attaching a mass block at the robot end, which overcomes the shortcoming of the traditional self-excitation methods that cannot obtain the dynamic compliance magnitude. With appropriate trajectory programming, this method can be carried out automatically in the poses of interest without manual operations. First, the impulse (moment) of the incremental self-excitation is modeled based on momentum theorem, and the association model of the pulse response increment with the incremental self-excitation is established. For the problem that the FRF calculation process is sensitive to noise, the incremental self-excitation is assumed to be a Gaussian pulse, and its identification method is provided. Then, the dimensionality requirement for identifying the 9-item (direct and cross) FRFs is reduced using the modal directionality of milling robots, and the corresponding FRF calculation method is proposed. The rationality of the required simplifications and assumptions of this method is verified by experiments and calculations. The experimental results in several robot poses show that the proposed method can effectively identify all the direct and cross FRFs in the low-frequency band.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":"86 ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41310216","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

3D PRINTED DIFFRACTION GRATINGS DROP COATED BY DIFFERENT RESINS AND THEIR MECHANISM 三维打印衍射光栅滴涂不同树脂及其机理

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-09 DOI: 10.1115/1.4063137

Junyu Hua, Yujie Shan, Shaocheng Wu, Huachao Mao

{"title":"3D PRINTED DIFFRACTION GRATINGS DROP COATED BY DIFFERENT RESINS AND THEIR MECHANISM","authors":"Junyu Hua, Yujie Shan, Shaocheng Wu, Huachao Mao","doi":"10.1115/1.4063137","DOIUrl":"https://doi.org/10.1115/1.4063137","url":null,"abstract":"\u0000 3D-printed blocks with drop coating could work as diffraction gratings while the layer stepping serves as the grooves of the gratings. The paper reports 3D-printed diffraction gratings coated with different resins. A collimated laser with a wavelength of 520 nm passed through the gratings and generated diffraction patterns. Optical path differences and surface profiles of the samples were measured to analyze the mechanism of the diffraction phenomenon. The as-printed samples had a grating height of about 8 μm induced by layer stepping, which could not generate clear diffraction patterns because of too large optical path difference. After being coated with different resins on the surfaces, the printed samples generated diffraction patterns. We experimentally showed that the magnitude of optical path differences became close to the wavelength of the laser and that the diffraction phenomenon was mainly caused by the difference in the refractive indices between the as-printed part and the drop-coated part. This novel method enables low-cost 3D printers to fabricate diffractive optical elements for visible light.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43049295","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

Improving Uniformity of Cell Distribution in Post-Inkjet-Based Bioprinting 提高喷墨后生物打印中细胞分布的均匀性

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-08 DOI: 10.1115/1.4063134

Jiachen Liu, Changxue Xu

{"title":"Improving Uniformity of Cell Distribution in Post-Inkjet-Based Bioprinting","authors":"Jiachen Liu, Changxue Xu","doi":"10.1115/1.4063134","DOIUrl":"https://doi.org/10.1115/1.4063134","url":null,"abstract":"\u0000 Advancements of additive manufacturing enable fabrication of in vitro biomimetic grafts leveraging biological materials and cells for various biomedical applications. The realization of such biofabrication typically requires time from minutes to hours depending on the scale and complexity of the models. During direct biofabrication, cell sedimentation with the resultant aggregation is extensively deemed to be one of the acute problems for precise and reliable inkjet-based bioprinting. It often results in highly unstable droplet formation, nozzle clogging, and non-uniformity of post-printing cell distribution. Our previous study has implemented active bioink circulation to mitigate cell sedimentation and aggregation within the bioink reservoir. This study focuses on the comparison of post-printing cell distribution within formed microspheres and one-layer sheets with and without active circulation. The experimental results have demonstrated the significant improvement in post-printing cell distribution under implemented active circulation. Moreover, the printed sheet samples are subject to 3-day incubation to investigate the effect of cell distribution on cell viability and proliferation. It shows that compared to non-uniform cell distribution the uniform cell distribution significantly improves cell viability (92% vs 77% at Day 3) and cell proliferation (3.3 times vs 1.7 times at Day 3). The preliminary results in this letter have demonstrated not only the high effectiveness of the active bioink circulation to improve post-printing cell distribution within microspheres and one-layer sheets, but also the critical role of the uniform post-printing cell distribution in promoting cell viability and proliferation.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43160196","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

Experimental setup for in-process measurements and analysis of wear-dependent surface topographies 磨损相关表面形貌的过程测量和分析实验装置

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-08 DOI: 10.1115/1.4063133

Nils Potthoff, J. Liss, P. Wiederkehr

引用次数: 0

Influence of wire feed speed and torch speed on the mechanical properties of wire arc additively manufactured stainless steel 送丝速度和焊枪速度对丝弧加成不锈钢力学性能的影响

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-04 DOI: 10.1115/1.4063108

Laurent Terrenoir, J. Lartigau, A. Arjunan, Laura Laguna Salvadó, Christophe Merlo

{"title":"Influence of wire feed speed and torch speed on the mechanical properties of wire arc additively manufactured stainless steel","authors":"Laurent Terrenoir, J. Lartigau, A. Arjunan, Laura Laguna Salvadó, Christophe Merlo","doi":"10.1115/1.4063108","DOIUrl":"https://doi.org/10.1115/1.4063108","url":null,"abstract":"\u0000 Wire Arc Additive Manufacturing (WAAM) enables 3D printing of large high-value metal components. However, integrating WAAM into production lines requires a critical understanding of the influence of process parameters on the resulting material characteristics. As such, this research investigates the relationship between WAAM wire feed speed (WFS) and torch speed (TS) on the resulting mechanical characteristics of 316LSi thick parts (2.5 cm - 0.98 in). The experimental procedure is informed by a training matrix that allows parametric analysis of WFS and TS on the ultimate tensile strength (σult), yield strength (σy), elastic modulus (E), failure strain (εf), hardness (HV0.5) and dimensional accuracy (Da) of the printed samples. The research found that WAAM-processed 316LSi parts feature isotropic material properties despite variations in WFS and TS. The developed surrogate model offers five significant polynomial models capable of accurately predicting the influence of WAAM process parameters on σult, σy, εf, E and Da. The research found TS to be the most significant WAAM process parameter in comparison to WFS for σult and εy. On the contrary σy, E and Da were found to be primarily driven by WFS as opposed to TS. Overall, the paper for the first time presents an accurate surrogate model to predict the mechanical characteristics of WAAM 316LSi thick parts informed by wire feed speed and torch speed. The study demonstrates that the mechanical properties of WAAM-processed steel are primarily influenced by the underlying process parameters offering significant potential for tunable performance.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49612613","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

Autonomous robotic bin picking platform generated from human demonstration and YOLOv5 由人类演示和YOLOv5生成的自主机器人拣货平台

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-04 DOI: 10.1115/1.4063107

Jinho Park, C. Han, M. Jun, Huitaek Yun

{"title":"Autonomous robotic bin picking platform generated from human demonstration and YOLOv5","authors":"Jinho Park, C. Han, M. Jun, Huitaek Yun","doi":"10.1115/1.4063107","DOIUrl":"https://doi.org/10.1115/1.4063107","url":null,"abstract":"\u0000 Vision-based robots have been utilized for pick-and-place operations by their ability to find object poses. As they progress into handling a variety of objects with cluttered state, more flexible and lightweight operations have been presented. In this paper, an autonomous robotic bin-picking platform which combines human demonstration with a collaborative robot for the flexibility of the objects and YOLOv5 neural network model for the faster object localization without prior CAD models or dataset in the training. After simple human demonstration of which target object to pick and place, the raw color and depth images were refined, and the one on top of the bin was utilized to create synthetic images and annotations for the YOLOv5 model. To pick up the target object, the point cloud was lifted using the depth data corresponding to the result of the trained YOLOv5 model, and the object pose was estimated through matching them by Iterative Closest Points (ICP) algorithm. After picking up the target object, the robot placed it where the user defined in the previous human demonstration stage. From the result of experiments with four types of objects and four human demonstrations, it took a total of 0.5 seconds to recognize the target object and estimate the object pose. The success rate of object detection was 95.6%, and the pick-and-place motion of all the found objects were successful.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43894778","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

Hybrid laser-arc welding-induced distortions analysis of large-scale thin-walled cruise ship structures 大型薄壁游船结构激光弧焊复合变形分析

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-04 DOI: 10.1115/1.4063109

Liangfeng Li, Yansong Zhang

{"title":"Hybrid laser-arc welding-induced distortions analysis of large-scale thin-walled cruise ship structures","authors":"Liangfeng Li, Yansong Zhang","doi":"10.1115/1.4063109","DOIUrl":"https://doi.org/10.1115/1.4063109","url":null,"abstract":"\u0000 In recent years there has been increasing use of thin-walled structures with a plate thickness of 6mm-10mm in the construction of cruise ships. As one of the important processes of cruise ship construction, hybrid laser-arc welding, combing the advantages of laser welding and arc welding, is increasingly applied in thin-walled cruise ships with the objective of reducing panel deformation. However, due to the weak stiffness of the thin-walled structure with a continuous weld length of 4m-16m, complex welding deformation, e.g., buckling deformation will be prone to occur. This paper analyzed the deformation behavior of large-scale thin-walled cruise ship structures with the change of weld length, structural width, and plate thickness in hybrid laser-arc welding process. The buckling mode induced by the welding deformation is predicted based on the combination method of thermal elastic-plastic and inherent strain, as well as experimental verification. Comparing the deformation behavior of large thin-walled cruise ship structures, when the continuous weld length exceeds 7.5m during butt welding, the welding deformation mode transitions from bending deformation to buckling deformation. Comparing the buckling behavior of structures with different thicknesses at a length of 15m, a slight buckling occurs with a plate thickness of 10mm, but reducing the plate thickness to 6mm leads to severe buckling deformation with up to 7 half-wavelengths.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":"1 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63503904","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

A Brief History of the Progress of Laser Powder Bed Fusion of Metals in Europe 欧洲激光粉末床金属熔合技术进展简史

3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-03 DOI: 10.1115/1.4062788

Richard Rothfelder, Florian Nahr, Dominic Bartels, Lova Chechik, Michael Schmidt

引用次数: 0

European Special Issue 欧洲特别发行

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-03 DOI: 10.1115/1.4063092

Albert Shih, Vincent Wagner

引用次数: 0

MANUFACTURING MULTI-MATRIX COMPOSITES: OUT-OF-VACUUM BAG CONSOLIDATION 制造多基复合材料:真空袋固结

IF 4 3区工程技术

Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-02 DOI: 10.1115/1.4063091

Arjun Radhakrishnan, I. Georgilas, I. Hamerton, M. Shaffer, D. Ivanov

{"title":"MANUFACTURING MULTI-MATRIX COMPOSITES: OUT-OF-VACUUM BAG CONSOLIDATION","authors":"Arjun Radhakrishnan, I. Georgilas, I. Hamerton, M. Shaffer, D. Ivanov","doi":"10.1115/1.4063091","DOIUrl":"https://doi.org/10.1115/1.4063091","url":null,"abstract":"\u0000 The formation of porosity is a major challenge in any composite manufacturing process particularly in the absence of vacuum assistance. Highly localised injection of polymer matrix into regions of interest in a dry preform is a route to manufacturing multi-matrix fibre-reinforced composites with high filler concentrations which are otherwise difficult to achieve. Such multi-matrix fibre-reinforced composite systems, which combine multiple resins in continuous form offer improved structural performance around stress concentrators and multi-functional capabilities, unlike traditional composite materials. As the process lacks vacuum assistance, porosity becomes a primary issue to be addressed. This paper presents a rheo-kinetic coupled rapid consolidation procedure for optimizing the quality of localised matrix patches. The procedure involves manufacturing trials and analytical consolidation models to determine the best processing program for minimal voidage in the patch. The results provide a step towards an efficient manufacturing process for designing multi-matrix composites without the need for complex vacuum bag arrangements. By optimizing the quality of the localised matrix patches, the procedure described in this paper can improve the overall performance of multi-matrix composite systems. The ability to create these composites without the need for complex vacuum bag arrangements can also reduce the manufacturing cost and time associated with the manufacturing of multi-matrix fibre-reinforced composites.","PeriodicalId":16299,"journal":{"name":"Journal of Manufacturing Science and Engineering-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45417113","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