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Design and Control of Ball-and-Socket-Type Spherical Motor: A Comprehensive Study 1

引用

International Conference on Production and Industrial engineering, CPIE 2023

作者： Singh, Jasvinder Lishwanth, R.K. Akashraj, P. Maria Joseph Mervin, A. Aaron, S. Ananthashankar, V. School of Mechanical Engineering Lovely Professional University Phagwara Punjab144411 India

ISBN: (数字)9789819983438

ISBN: (纸本)9789819983421

This paper reviews the spherical motor in existence. There are multiple spherical motors with unique designs. Given the rising expectations for modern machine tools and robotic equipment, multi-DOF are required for product quality and the requirement to generate free-form surfaces. As a result, new machine tool designs and drive technologies are required. Researchers have been working on the development of various designs and coil arrangements of the spherical motor to attain the most efficient performance. The magnetic pole arrangement and control system plays a crucial role in attaining the desired outcome. The magnetic pole arrangement is important to create efficient torque to drive a primer. There have been studies about the magnetic pole arrangement and which arrangement serves the best purpose. The control system is required to obtain precise motion and keep the system in a stable state. This paper briefly discusses the different designs, magnetic pole arrangement, and control system. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Control systems

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Study on the Impact of Fin Diameter on Thermal and Hydraulic Behaviour of Annular Finned Tubes in Crossflow Using 3D CFD Simulations 1

引用

9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022

作者： Raje, Mohit Dhiman, Amit Department of Chemical Engineering IIT Roorkee Uttarakhand Roorkee247667 India

ISBN: (数字)9789819957552

ISBN: (纸本)9789819957545

This study deals with a 3D numerical analysis of annular finned tubes in crossflow. The impact of fin diameter on variables such as heat transfer coefficient, pressure drop and the heat transfer rate was considered in the Reynolds number range of 4630 ≤Re ≤ 9260. The rate of heat transmission has been seen to increase by nearly 19% and 29% when the fin diameter is enlarged at the highest and the lowest Reynolds number values, respectively. For a fin diameter of 34 mm, the heat transfer coefficient is augmented by nearly 61% with the Reynolds number. The pressure drop increases by nearly 9–12% for the highest and the lowest Reynolds number. To gain a deeper understanding of the fin’s thermal performance, the surface temperature distribution of the fin is obtained. A study of fin surface temperature distribution shows a sharp temperature gradient at the front section of a fin than its rear section. It was also found that the fin surface temperature distribution is influenced significantly by the fin diameter and Reynolds number. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Reynolds number

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Porous Structures Simulation Analysis: The Effect of Different Strut Geometry on the Bone Scaffold 1

引用

4th International Conference on Experimental and Computational Mechanics in engineering, ICECME 2022

作者： Winarso, Rochmad Ismail, Rifky Anggoro, Paulus Wisnu Jamari, Jamari Bayuseno, Athanasius Priharyoto Department of Mechanical Engineering Faculty of Engineering Universitas Muria Kudus Central Java Kudus Indonesia Department of Mechanical Engineering Faculty of Engineering Diponegoro University Central Java Semarang Indonesia Department of Industrial Engineering Faculty of Industrial Technology University of Atma Jaya Yogyakarta Yogyakarta55281 Indonesia

ISBN: (数字)9789819974955

ISBN: (纸本)9789819974948

Porous structures have shown promise in biomedical applications, particularly for artificial implants, because they provide a large surface area for bone ingrowth. A simulation analysis model was developed in this study to evaluate the mechanical properties of various designs based on cubic unit cell scaffolds with varying strut geometries at the same porosity. Based on the diameter and cross-section type of the struts, porous bone scaffolds with the same porosity were developed. The porous structure bone scaffold with square cross-section struts is larger based on the pore size measurements. The porous structure bone scaffold with square cross-section struts has the highest compressive strength and modulus elasticity, according to this study. All bone scaffolds with porous structures, however, may meet the trabecular bone criteria (pore size, porosity, interconnectivity, and biocompatibility), but not the cortical bone criteria. Biomaterials with higher mechanical properties, or polymers combined with ceramics, will need to be researched in the future to match cortical bone's mechanical strength. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Geometry

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Development of Tomographic Background-Oriented Schlieren Technique for 3D Density Measurement in Buoyant Plumes 1

引用

9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022

作者： Mohd, Javed Das, Debopam Department of Aerospace Engineering IIT Kanpur Kanpur208016 India

ISBN: (数字)9789819957552

ISBN: (纸本)9789819957545

This paper described the development of a tomographic background-oriented schlieren (TBOS)-based technique for three-dimensional density measurement in buoyant plumes using tomographic reconstruction. TBOS utilizes a tomographic algebraic reconstruction technique (ART) to calculate the three-dimensional density field of asymmetric, unsteady buoyant plumes. Background-oriented schlieren (BOS) data, to be used for TBOS, has been acquired at eight projection angles with the help of eight cameras. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Image reconstruction

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Design and Modeling of CO2 Absorption Column for Carbon Sequestration 1

引用

1st International Conference on Fluid, Thermal and Energy Systems, ICFTES 2022

作者： Vishal Reddy, P. Ghodke, Praveen Kumar Department of Chemical Engineering National Institute of Technology Calicut Kerala Kozhikode673601 India

ISBN: (数字)9789819959907

ISBN: (纸本)9789819959891

Carbon dioxide (CO2) mitigation technologies are emerging faster due to the impact of global warming. The study aimed to sequestrate CO2 from a thermochemical conversion process of biomass by absorption in a specially designed parallel plate column. The absorption column was designed in Gambit software, while simulations were performed in Fluent software. Simulations were analyzed for different liquid hold-up volumes with variable liquid flow rates at a constant mass transfer area and gas flow rate. The absorption of CO2 in water was increased with decreasing plate spacing in the column. It was also discovered that liquid and gas flow rates greatly influenced efficiency. The simulations primarily focused on optimizing the liquid flow rate and plate spacing for maximal CO2 recovery with the least energy and water requirement. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Carbon dioxide

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Numerical Investigation on Effect of Appendage on Heat Transfer in a Backward-Facing Step (BFS) 1

引用

9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022

作者： Nagarajan, P. Soma Sundaram, S. Department of Mechanical Engineering NIT Puducherry Karaikal609609 India

ISBN: (数字)9789819963430

ISBN: (纸本)9789819963423

In the present study, convective heat transfer, in a laminar two-dimensional flow of a backward-facing geometry is analyzed. The effect of introduction of an appendage at the edge of the step, to provide an obstruction in the flow and thus to enhance the heat transfer, has been numerically studied. The governing equations are solved in the finite volume method. The flow is considered to be laminar. Air with a Prandtl number of 0.7 is considered as the fluid. The effect of variation of Reynolds number (1 ≤ Re ≤ 1000), on various appendages is analyzed. The heat transfer enhancement is studied by primary recirculation length, average Nusselt number, pressure coefficient and performance evaluation criteria (PEC). The effect of orientation of the appendages has also been studied. The best improvement in heat transfer rate over the backward-facing step is generated by an appendage of length and has a value of YA/S = 0.84. However, PEC and pressure coefficient analysis indicate an appendage of YA/S = 0.33 and 0° is more suitable for increasing the heat transfer for a nominal pressure drop. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Nusselt number

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Temporal Interpolation of Flow Fields for Knocking Combustion Using CNN 1

引用

9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022

作者： Shamnani, Bhavesh Jaiswal, Ayush Bhavna Goel, Mahir Shukla, Mayank Tiwari, Neetu Dubey, Ajit Kumar Department of Mechanical and Industrial Engineering IIT Roorkee Roorkee247667 India

ISBN: (数字)9789819957552

ISBN: (纸本)9789819957545

Internal combustion engines suffer from the sudden unwanted sound, formally known as knocking. Knocking is detrimental to engine efficiency and degrades its life. This makes it essential to understand knocking in its precise form. However, the problem usually faced by researchers is that knocking is a spontaneous process, posing a problem for high-end resolution cameras to capture the phenomenon in its entirety. The situation only gets exacerbated in resource-constrained research. One possible workaround is to utilize the video frame interpolation (VFI) method to enhance the simulation’s intermediate frame, hence assisting the researcher in having better insight into the knocking phenomenon. This paper attempts to study the various VFI methods for different scenarios. The study includes the performance of a few state-of-the-art VFI with respect to the frame rate and type of species. We will establish the methodology wherein, given a dataset of simulated video, it attempts to find the best model with its structural similarity measure index (SSIM) and interpolated frames. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Interpolation

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Extended Reality from BIM Models Applied to Port Facilities 1

引用

32nd International conference on The Digital Transformation in the Graphic engineering, INGEGRAF 2023

作者： Carrera-Monterde, Ana Gomez-Jauregui, Valentin Manchado, Cristina Lastra-González, Pedro Otero, César Universidad de Cantabria Santander Spain Universidad de Cantabria Research Group EgiCAD Santander Spain Universidad de Cantabria Research Group GITECO Santander Spain

ISBN: (数字)9783031516238

ISBN: (纸本)9783031516221

This project verses on the development of an innovative work methodology in BIM (Building Information Modelling) applied to port facilities. This methodology consists on developing a software application for mobile devices that allows the user to access the geometry and information of the BIM model, in an easy and intuitive way. It is based on trending technologies such as Extended Reality (XR), Virtual Reality (VR), Mixed Reality (MR) and Augmented Reality (AR). It uses tablets and other mobile Android devices for exploring and interacting with several BIM models of civil infrastructures. The present article describes this mobile application software applied for a new loading dock, promoted by a Spanish administration entity. The software application allows the user to check the geometry and data from the BIM models, by means of two different options: from a remote location or from the actual site. The VR option in the application allows the user to visualize the environment from a remote locating, being able to look through the model of the civil infrastructure. This alternative is very useful when the access to the real infrastructures is limited, due to security hazards or geographical distance. Likewise, by using the second option, based on AR, the user can visualize the virtual scene overlapping the real environment in the construction site. In conclusion, both visualizing options allow choosing the visible elements in the scene, as well as checking the data associated with the 3D models (e.g., property sets). These options let the user interact with the models, incorporating the MR technologies in the application. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Augmented reality

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A Novel Design of Robotic Fruit Plucking Manipulator Using a Sliding Cutter for Agricultural Drones and Robots 1

引用

International Conference on Production and Industrial engineering, CPIE 2023

作者： Dethe, Abhishek Ashok Rajiv, B. COEP Technological University Pune India

ISBN: (数字)9789819983438

ISBN: (纸本)9789819983421

In recent years, especially the post-pandemic era where labor force scarcity has emerged as a concern seeking rising issue, robotics and automation in agriculture sector have stood up as a solution for this problem. Also, to fulfill the demand of exponentially rising population in world, dependency on unskilled labor should be turned into usage of more technology in agriculture like robots, drones, etc., to avoid crop loss due to negligence and mishandling of harvest. In this paper, a novel design of robotic fruit plucking manipulator using sliding cutter for fruit plucking drones and robots is discussed. This manipulator is proposed to be used by robots and drones for fruit plucking using holding and peduncle cutting of fruit. Cutting peduncle of fruit instead of pulling and twisting of fruit by drones is beneficial in a way that it reduces the jerks faced by drones due to sudden break of abscission layer. For this design of manipulator for cutting peduncle of fruit, no specific identification of peduncle is necessary, making it easier to program for just fruit identification by computer vision system and not its stem. This will also minimize the impact of the damages caused to the fruit by the conventionally used multi-fingered grippers, which uses fruit plucking methods like pulling, twisting, bending, etc., because this method also offers peeling of skin of fruit, shaking tree branches which results in unnecessary fall of other fruits and leaves and other harms causing losses. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Fruits

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Risk-Based Dependability Assessment of Digitalised Condition-Based Maintenance in Railway Part I–FMECA 1

引用

7th International Congress and Workshop on Industrial AI and eMaintenance, IAI 2023

作者： Söderholm, Peter Trafikverket and Quality Technology and Logistics Luleå University of Technology Luleå Sweden

ISBN: (数字)9783031396199

ISBN: (纸本)9783031396182

One vital contribution of Reliability-Centred Maintenance (RCM) is the definition of potential failure, which led to the concept of Condition-Based Maintenance (CBM) being accepted as one of the best ways of preventing functional failure. To enable CBM, the condition of an item must be monitored by Condition Monitoring (CM) of some critical functions. The CM results in collected data that represent the system’s condition. Diagnostics and prognostics are then concerned with the interpretation of collected condition data and the conclusion drawn about the item’s current and future condition. On the basis of the diagnostic and prognostic information, decisions about appropriate CBM can be made. The purpose of the risk-based dependability assessment described in this paper, is to support a decision whether or not a railway infrastructure item should be covered by an additional digitalised inspection solution for CM to enable improved CBM. Hence, the dependability assessment indicates ‘which’ functions or items that should be covered by a digitalised solution for inspection (CM) and ‘why’ they should be covered. ‘How’ the coverage should be solved, i.e., by which technical solutions, is not included in this paper. The proposed dependability assessment is based on stakeholder requirements, through a combination of a Failure Modes, Effects & Criticality Analysis (FMECA) and an Event Tree Analysis (ETA) with three major decision points where Maintenance Significant Items (MSIs) for further analysis are identified. This paper focuses on the FMECA-part and the two related MSI-selections of the proposed approach. The approach has been used on an aggregated level to formulate goals of an innovation procurement. Later on, the methodology is expected to support verification and validation of proposed CBM-solutions on a more detailed level. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Condition based maintenance

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