{"title":"Physics of Drop Coalescence on a Surface with Graded Wettability","authors":"Manjinder Singh","doi":"10.1109/ICMERR56497.2022.10097822","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097822","url":null,"abstract":"Drops on a surface that has graded wettability move when the wettability gradient is greater than hysteresis. We experimentally demonstrate that coalescence of drops initiate the motion of resultant drop on a surface that has hysteresis greater than wettability gradient. Importantly, our experiments show that in addition to shift of center of mass towards high wetting region, drop coalescence on a surface having graded wettability also results in motion of merged drop. We also explain the mechanism by which drop coalescence on a surface having graded wettability results in motion of otherwise stationary drops. Based on the mechanism, we analytically show that on a surface that has wettability gradient larger than hysteresis coalescence leads to reduction in drop size at which drop starts to move. Our analytical results show that reduction of drop departure radius due to coalescence depends on the local wetting conditions of the surface with wettability gradient.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133076036","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}
M. N. Yazar, Zülfikar Ali Erbudak, Alperhan Bay, İlkay Dost, Abdurrahim Semiz
{"title":"Path Tracking Methods Employed in Lane Centering Systems","authors":"M. N. Yazar, Zülfikar Ali Erbudak, Alperhan Bay, İlkay Dost, Abdurrahim Semiz","doi":"10.1109/ICMERR56497.2022.10097807","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097807","url":null,"abstract":"In this paper, a simulation environment with lane detection system emulator has been developed in order to compare the performance of path tracking methods. Path tracking problem is handled in local coordinate frame employing the lane detection system emulator outputs. By performing this environment, a detailed and proper comparison of geometric and model based path tracking methods, mostly used in the literature, are executed with respect to different speeds and road curvatures. The performance results show that the compared path tracking methods do not work well enough for all the determined performance criteria and the methods have complementary features. These complementary features show that path tracking methods can be employed in a hybrid structure to achieve a generally better performance results for the speed range (0–130 [km/h]) where autonomous driving is enabled. In addition, the obtained simulation results reveal the necessity of adaptive adjustment of the gain parameters of the path tracking methods with respect to the road curvature and vehicle speed.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125425409","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}
A. B. Khelkar, Kynjrilang Syrti, R. S. Das, B. Sarkar
{"title":"Augmenting the Thermal Performance of Solar Air Heater with Absorber Plate Roughened with Pin-Fins","authors":"A. B. Khelkar, Kynjrilang Syrti, R. S. Das, B. Sarkar","doi":"10.1109/ICMERR56497.2022.10097726","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097726","url":null,"abstract":"Solar air heaters (SAH) are one of the most promising and economical solar thermal collection appliances which can cater mainly to the needs of space heating and drying of agricultural products. They are easy to operate requiring minimum maintenance owing to their simple design without any moving parts. In the current work, effort is made to improve the thermal performance of a solar air heater by incorporating pins-fins on the absorber plate. The RNG $mathbf{k}-boldsymbol{varepsilon}$ turbulence model is applied in the study, by utilizing the finite volume-based solver ANSYS FLUENT 19.2. The length of absorber plate is considered to be 1100 mm, while taking three values of pin fin diameter (d) as 6 mm, 8 mm and 10 mm corresponding to height ratio (HR) of 0.17, 0.25 and 0.34 respectively, pitch ratio (PR) of 8, 10 and 15, with the variation of Reynolds number from 3,500-16,000. To get an insight of the flow physics and heat transfer characteristics, velocity streamlines, contours of velocity, temperature, heat transfer coefficient are provided. The highest value of Nusselt number (Nu) is found to be 162.31 at $boldsymbol{Re}=mathbf{16,000},mathbf{H}_{mathbf{R}} =mathbf{0.17}$ and $mathbf{P}_{mathbf{R}} =mathbf{8}$. Thermo-hydraulic augmentation index (THAI) of the pin fins absorber plate is reported to improved performance to that of the other type of absorber plate. At $boldsymbol{Re}$ = 10,000, $mathbf{H}_{mathbf{R}} =mathbf{0.25}$ and $mathbf{P}_{mathbf{R}} =mathbf{8}$ has the highest value of THAI of 2.212, the minimum value of THAI is 1.666 found at $mathbf{Re}=mathbf{13,000},mathbf{H}_{mathbf{R}} =mathbf{0.34}$ and $mathbf{P}_{mathbf{R}} =mathbf{10}$. The results indicate that for the considered range of $boldsymbol{Re}$, the new absorber plate design led an improved performance of the SAH in terms of heat transport from the absorber plate to the air stream, with minimal concomitant pressure drop penalty.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123088571","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}
Ravi Chandra Murthy Sampathirao, Shubham Bhise, P. Gandhi
{"title":"Dynamics of Under-Actuated Leech-Inspired Robot","authors":"Ravi Chandra Murthy Sampathirao, Shubham Bhise, P. Gandhi","doi":"10.1109/ICMERR56497.2022.10097811","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097811","url":null,"abstract":"Biomimicking has been a great inspiration for the development of many types of robots because of several advantages nature has built into her systems. This paper introduces a new Leech-inspired robot that makes use of the ultra-compliant element. The robot uses an ultra-flexible beam connected to two hubs at the end where the beam angle with respect to the hub is controlled. An electro-magnetic hold is used to secure the hub to the surface and another actuator to turn the hub with respect to the ground. We use the assumed modes method for modeling the dynamic deformation of the beam in planar motion and develop Extended Hamilton formulation considering length constraint on the beam. Gaits of robot motion are simulated with a heuristic design of control and corresponding experimental results are presented.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130473562","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}
{"title":"The Design and Simulation of a Novel Electromagnetic Launcher with Permanent Magnet","authors":"Bingxuan Cheng","doi":"10.1109/ICMERR56497.2022.10097818","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097818","url":null,"abstract":"This paper presents a novel electromagnetic launcher (coil gun) with permanent magnet (PM) as the projectile. The design, calculate and simulation of the PM coil gun are described. The excitation switching sequence of the coil and the performance of the novel coil gun including the electromagnetic force and speed of the projectile are presented accordingly. It is concluded that this novel coil gun with permanent magnet can achieve high speed of projectile within smaller package and with less energy consumption.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130852650","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}
C. Bergner, Ronald Schmidt-Vollus, P. Heß, René Zuercher
{"title":"An Intuitive and Efficient Framework for Programming Robotic Systems","authors":"C. Bergner, Ronald Schmidt-Vollus, P. Heß, René Zuercher","doi":"10.1109/ICMERR56497.2022.10097825","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097825","url":null,"abstract":"The implementation of a flexible and intuitive programming system is a basic requirement for the efficient usage of robotic applications in real industrial environments. This paper focuses on the development and implementation of a programming system that enables an industrial worker to program the robot without writing a single line of code. Therefore, the worker can compound the robot program by choosing different movement sequences out of a list of operations. By using the ISA88 standard of the process industry, the considered application can be subdivided into smaller units that only have to be parameterized. Thus, the worker only has to be aware of the industrial workplace itself, but not of writing robot source code. Furthermore, we implemented a human-machine interface (HMI) on an industrial computer that is connected to the robot controller via TCP/IP. The evaluation shows that our programming system is characterized by a great versatility for robotic applications in real industrial environments.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129615348","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}
Akash Chandrabhan Chandekar, Dhananjay Singh, B. Debnath
{"title":"Investigation of the F-Shape Manifold for Air-BioCNG Mixing in Twin-Cylinder Dual-Fuel Diesel Engine","authors":"Akash Chandrabhan Chandekar, Dhananjay Singh, B. Debnath","doi":"10.1109/ICMERR56497.2022.10097809","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097809","url":null,"abstract":"Recently, biologically produced compressed natural gas (bioCNG) is being considered as an alternative to the fossils. The present study evaluates the twin-cylinder engine of dual-fuel mode with diesel as a pilot and bioCNG as a primary fuel. It incorporates an F-shape intake manifold with the port-fuel injector for bioCNG induction. This study aims to analyse the flow behaviour of the air-bioCNG mixture for different bioCNG substitutions. The manifold geometry is modelled based on its actual dimensions. The flow simulation of the mixture of air and bioCNG inside the F-shape inlet manifold is executed using computational fluid dynamics. The experiments at different substitutions used as the boundary conditions, such as the inlet pressure and air and bioCNG mass flow rates. The parametric distributions in the manifold are analysed to examine the flow characteristics of the mixture. It is found that the flow characteristics show improvement concerning an increase in the substitution rate in terms of gas request ratio (GRR), with a peak velocity of 37.2 m/s in 80% bioCNG.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132275026","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}
{"title":"Deep Learning Based Synthetic Image Generation for Defect Detection in Additive Manufacturing Industrial Environments","authors":"Daniel Matuszczyk, Niklas Tschorn, F. Weichert","doi":"10.1109/ICMERR56497.2022.10097812","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097812","url":null,"abstract":"As the amount of additive manufactured parts is rising methods for part defect detection are needed to guarantee good product quality and fulfill quality management requirements. The usage of deep learning methods in industrial environments for artefact detection is growing, therefore, it is crucial to obtain enough training data in order to deploy powerful models for intelligent control systems. We propose a novel approach for synthetic image creation for object defect detection of Fused Deposition Modeling (FDM) manufactured parts based on deep learning methods and demonstrate the capability to enhance deep learning based defect detection with synthetic images. Our approach is based on physical rendering in combination with a generative adversarial network (GAN) for synthetic data generation. We illustrate how the generated synthetic images can be used to enhance deep learning methods by training an auto encoder model which afterwards is used for failure detection. By an evaluation study it is depicted that our approach for synthetic image generation achieves good results where, in comparison to real world images nearly the same amount of images are assumed to be real. Using the advantage of synthetic data, the autoencoder model is able to detect failures in real images. Therefore, the approach is able to generate photo realistic images which can be used to detect defects on parts with limited training material.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132200945","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}
{"title":"Human-Robot Contact Detection in Assembly Tasks","authors":"Kiavash Fathi, Maryam Rezayati, H. W. van de Venn","doi":"10.1109/ICMERR56497.2022.10097827","DOIUrl":"https://doi.org/10.1109/ICMERR56497.2022.10097827","url":null,"abstract":"Industry 5.0 complements the existing Industry 4.0 paradigm by, amongst others, focusing on flexible and human-centered manufacturing. However, there are some challenges when humans and robots share a workspace, such as human safety and limited robot perception. Addressing the above-mentioned challenges, we present in this paper a modular contact detection architecture for physical human-robot collaborations, especially for assembly tasks. This architecture consists of two sub-modules: a torque regressor using Gaussian Process Regressor (GPR) and a contact classifier using a Convolutional Neural Network (CNN). In fact, the GPR calculates deviations from expected joint torque values and the CNN detects object/human contacts with the robot, based on the estimated torque values. The result of the real-time implementation on an actual robot shows that the model can achieve a balanced accuracy of over 99% when the robot speed is over 27% and below 45% of its maximum speed even though the dataset was gathered with a speed of only 25%. This indicates the model's generalization capability to higher robot speeds. In addition, the generalization capability of the modular architecture for new movements was tested. The results show, that retraining the GPR can handle the data distribution shift and consequently, the contact classifier is not required to be retrained. Solving the impact of data distribution shift on the contact classifier makes the proposed modular architecture superior to the current state-of-the-art models.","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115905416","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}
{"title":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR 2022)","authors":"","doi":"10.1109/icmerr56497.2022.10097810","DOIUrl":"https://doi.org/10.1109/icmerr56497.2022.10097810","url":null,"abstract":"","PeriodicalId":302481,"journal":{"name":"2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115818271","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}