Transactions of The Canadian Society for Mechanical Engineering最新文献

Novel design and motion analysis of an omni-tread snake-like robot for narrow space inspection 用于狭窄空间检测的全履带蛇形机器人的新型设计和运动分析

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-15 DOI: 10.1139/tcsme-2024-0023

Suyang Yu, Haifeng Tian, Changlong Ye, Jingxin Peng

{"title":"Novel design and motion analysis of an omni-tread snake-like robot for narrow space inspection","authors":"Suyang Yu, Haifeng Tian, Changlong Ye, Jingxin Peng","doi":"10.1139/tcsme-2024-0023","DOIUrl":"https://doi.org/10.1139/tcsme-2024-0023","url":null,"abstract":"Snake-like robots have a slender body and strong environmental adaptability. This paper aims to propose an omni-tread snake-like robot that can adapt to the needs of specific narrow space exploration missions and provide a basis for design work through necessary motion analysis. The robot adopts the form of three modules in series, and the modules are connected through differential driving joints, which increases the joint torque of the robot. The nested omni-tread structure improves the robot's motion efficiency and environmental adaptability. This paper conducts configuration and motion analysis of the robot. The simulation is performed using the optimization solution method to obtain the joint torque and walking torque of the robot, which guides the design of the robot. The experiment is also conducted with the developed prototype to verify the robot's performance. From the simulation results, the joint torque and walking torque are obtained, and the motors are selected. The motion performance and field applicability of the robot are verified through experiment tests. The experiment results further verify the robot design and analysis work. The structural design of robots and optimization solution method in this paper has certain reference values for other researchers.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141647263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Closed-Loop Control of Surface Preparation for Metallizing Fiber-Reinforced Polymer Composites 金属化纤维增强聚合物复合材料表面制备的闭环控制

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-12 DOI: 10.1139/tcsme-2024-0035

Shiva Shokri, Pooria Sedigh, Mehdi Hojjati, Tsz Ho Kwok

{"title":"Closed-Loop Control of Surface Preparation for Metallizing Fiber-Reinforced Polymer Composites","authors":"Shiva Shokri, Pooria Sedigh, Mehdi Hojjati, Tsz Ho Kwok","doi":"10.1139/tcsme-2024-0035","DOIUrl":"https://doi.org/10.1139/tcsme-2024-0035","url":null,"abstract":"This study introduces a novel approach to enhance the surface properties of fiber-reinforced polymer composites through thermal spray coatings, utilizing a metal mesh as an anchor to improve coating adhesion. A critical step in this process is achieving optimal exposure of the metal mesh by sandblasting prior to coating. To address this challenge, we propose a closed-loop control system designed to inspect and blast parts effectively. Our method leverages top-view microscope images as inputs, employing a convolutional neural network (CNN) to correlate these images with the corresponding exposure levels of the metal mesh, measured via a destructive method. Upon training, the CNN model accurately estimates the exposure level solely from the top-view images, facilitating real-time feedback to guide subsequent sandblasting operations. Unlike traditional manual inspection methods, which demand expertise and experience, our automated approach streamlines the inspection process using a cost-effective portable digital microscope. Experimental findings validate the efficacy of our method in successfully discerning surface preparation status with an accuracy rate of 95% and demonstrate its practical utility in closed-loop control. Our study not only offers a robust methodology for quantifying surface preparation data but also presents a significant advancement in automating the inspection process. Moreover, the broader implications of our approach extend to various manufacturing sectors, where defect detection and closed-loop control are crucial for optimizing production efficiency and product quality.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Dynamic Characteristics of electromechanical coupling of body-suspended drive system for high-speed trains under wheel polygonal wear 车轮多边形磨损下高速列车车身悬挂式驱动系统机电耦合的动态特性

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-12 DOI: 10.1139/tcsme-2024-0056

Xuan Wang, Jinhai Wang, Jianwei Yang, Dechen Yao, Yue Zhao, Bo Chen

{"title":"Dynamic Characteristics of electromechanical coupling of body-suspended drive system for high-speed trains under wheel polygonal wear","authors":"Xuan Wang, Jinhai Wang, Jianwei Yang, Dechen Yao, Yue Zhao, Bo Chen","doi":"10.1139/tcsme-2024-0056","DOIUrl":"https://doi.org/10.1139/tcsme-2024-0056","url":null,"abstract":"Wheel polygonal wear can trigger intense wheel-rail interactions in railway vehicles, posing a significant threat to traffic safety. However, the mechanism and interaction of the influence of wheel polygonal wear on the electromechanical coupling characteristics of high-speed trains remain unclear. Therefore, this paper proposes a joint simulation modelling method that takes into account the integration of the electrical subsystem with the complete mechanical subsystem. A comprehensive analysis is conducted on the dynamic response of the high-speed train's body-suspended drive system under a wide range of frequency excitations arising from harmonic torque, gear meshing, and wheel polygon wear. The results indicate that the electrical system generates a substantial amount of harmonic frequency components, resulting in a significant increase in the vibration of the train. The wheel polygon wear causes a broadening of the low-frequency resonance band, revealing a relatively prominent observation interval for the dynamic characteristics. Concurrently, it is discovered that the 23rd-order wheel polygon wear excites the system's resonance frequency, and as the wavelength of the wheel polygon increases, the acceleration vibrations intensify progressively. Research reveals first the interaction of electrical system and mechanical system under wheel polygon wear, especially in the resonance gain characteristics under polygons and harmonic torques.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Study on the temperature dissipation performance of brake pads with different surface patterns 不同表面花纹刹车片的散温性能研究

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-11 DOI: 10.1139/tcsme-2024-0046

Gang Wu, Chen Tian, Zhipeng Liu

{"title":"Study on the temperature dissipation performance of brake pads with different surface patterns","authors":"Gang Wu, Chen Tian, Zhipeng Liu","doi":"10.1139/tcsme-2024-0046","DOIUrl":"https://doi.org/10.1139/tcsme-2024-0046","url":null,"abstract":"Drum brakes may failure due to overheating in the contact area during frequent braking. This research takes the honeycomb structure with excellent heat dissipation and strength as the biomimetic object, and processes different biomimetic patterns on the surface of the brake pad. Using a self-made drum brake test bench, the changes in braking duration and surface temperature of different biomimetic pattern brake pads under emergency braking and repeated braking tests at different braking intervals are studied. The experimental results indicate that the braking duration of patterned brake pad is 7.82%~11.8% shorter than that of normal brake pads. Although the temperature of normal brake pads is lower at the end of braking, as the heat dissipation cycle prolongs, patterned brake pads exhibit faster heat dissipation, with honeycomb patterns having better heat dissipation than circular and square patterns. Using the least squares method, it was calculated that when the braking cycles were greater than 10.3s, 12.0s, and 14.5s, the braking heat dissipation effect of honeycomb, circular, and square brake pads was better than that of normal brake pads. These results validate that honeycomb patterned brake pads can alleviate the occurrence of thermal degradation in drum brakes.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Evaluation of a Small-Sized Continuum Robot for Grasping Tasks 小型连续机器人抓取任务的实验评估

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-10 DOI: 10.1139/tcsme-2023-0155

A. Mehrkish, Farrokh Janabi-Sharifi

{"title":"Experimental Evaluation of a Small-Sized Continuum Robot for Grasping Tasks","authors":"A. Mehrkish, Farrokh Janabi-Sharifi","doi":"10.1139/tcsme-2023-0155","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0155","url":null,"abstract":"This study explores catheters, small-sized continuum robots (CRs), in medical procedures, utilizing a recently developed comprehensive classification system known as the \"CR-based Taxonomy\". This work specializes the proposed taxonomy for small-sized CRs with medical applications through semi-structured interviews with researchers in this field. Subsequently, it provides a comprehensive analysis of grasp taxonomy, encompassing aspects such as grasp stability, grasp adaptability, and the inherent characteristics of manipulated objects and tasks. This analysis is conducted within the context of the \"CR-based Taxonomy\" to assess its feasibility in a practical scenario involving a small-sized CR. Based on this analysis, fixed-tip grasp (FTG), hook grasp (HoG), and power form closure grasp (PFG) with a grasp stability of 18 have the highest stability, while, platform/pull/push grasp (PG) and expandable grasp (EG) have the lowest stability. Moreover, PFG and precision multi-contact grasp (PMG) have superior adaptability compared to other grasp families. Also, the planar payload of selected grasp families is much higher than the spatial payload of those families; however, the grasp size remains equal for both dimensions. This endeavor lays the groundwork for more in-depth investigations into catheter applications and offers valuable guidance to medical device developers in the creation of enhanced medical instruments.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141661096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of tooth surface wear on dynamic characteristics of spur gear transmission system 齿面磨损对正齿轮传动系统动态特性的影响

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-10 DOI: 10.1139/tcsme-2023-0152

Juan Zhao, Hongchuan Cheng, Kaiwen Lu, Songnian Liu, Zhou Yang

{"title":"Effect of tooth surface wear on dynamic characteristics of spur gear transmission system","authors":"Juan Zhao, Hongchuan Cheng, Kaiwen Lu, Songnian Liu, Zhou Yang","doi":"10.1139/tcsme-2023-0152","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0152","url":null,"abstract":"The meshing stiffness and system dynamic characteristics caused by gear wear fault are studied. Firstly, potential energy method was used to model and solve the meshing stiffness of gears and the effect of wear on the meshing stiffness and static transfer error was analyzed. A 6-dof spur gear dynamics model was established considering various nonlinear factors, and the dynamic responses of the spur gear system under various wear degrees were analyzed by using time domain, spectrum, phase plane and Poincare mapping. Finally, the visual test platform of the gear box is built, and the wear condition and dynamic response of the gear box under different wear cycles are analyzed. Results show that the meshing stiffness of gear decreases due to wear, and the meshing stiffness of double tooth decreases more than that of single tooth. In addition, the static transmission errors caused by wear changes periodically with meshing frequency. Wear causes the vibration response of gear system to become complex gradually, and the nonlinear of the system is enhanced, which changes from single period motion to quasi period motion. Results can provide theoretical support for gear wear reduction, life extension, vibration reduction and noise reduction and lubrication improvement.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Band gap generation in cantilever beams through periodic material removal 通过周期性材料去除在悬臂梁中产生带隙

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-04 DOI: 10.1139/tcsme-2024-0013

Vania González, Olivier Robin, Viviana Meruane

{"title":"Band gap generation in cantilever beams through periodic material removal","authors":"Vania González, Olivier Robin, Viviana Meruane","doi":"10.1139/tcsme-2024-0013","DOIUrl":"https://doi.org/10.1139/tcsme-2024-0013","url":null,"abstract":"Traditional methods for generating band gaps in beams usually involve adding periodic elements like tuned mass dampers or masses, or applying complex geometrical changes. This research suggests a subtraction-based method achieved by removing material in the thickness direction through straightforward machining operations, thus forming periodic cells. The numerical studies start with band gap analysis, using periodic theory to assess different periodic cell configurations. This is followed by numerical and experimental studies on cantilever beams, each containing a set number of these periodic cells. Non-contact vibration measurements are conducted on one plain and six machined aluminum beams using a multipoint laser vibrometer and an automated impact hammer. The experimental findings corroborate the band gaps predicted by the numerical model, confirming the effectiveness of this approach. The study notes that the optimal periodicity of the cells and the contrast in thickness vary with the beam’s dimensions, and that the thickness contrast markedly affects the quantity, width, and intensity of the resulting band gaps. These results indicate that (1) periodic material removal in beam-like structures allows improved vibration reduction while mass is reduced, and (2) manufacturing can play a key role in vibration control in simple structures.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141680212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Design and analysis of a novel rotary inertance hydraulic converter with the continuous controlling turntable 带连续控制转盘的新型旋转惰性液压转换器的设计与分析

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-03 DOI: 10.1139/tcsme-2023-0153

Delei Fang, Guofeng Jia, Jianwei Wang, Guoheng Wu, lin Cao, Junxia Zhang

引用次数: 0

Performance of a Savonius Vertical Axis Wind Turbine installed on a Forward Facing Step 安装在前倾台阶上的 Savonius 垂直轴风力发电机的性能

IF 0.8 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-07-02 DOI: 10.1139/tcsme-2023-0189

Arezoo Rabiei, Marius Paraschivoiu

引用次数: 0

Rolling bearing fault diagnosis based on DRS frequency spectrum image and improved DQN 基于 DRS 频谱图像和改进 DQN 的滚动轴承故障诊断

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-06-04 DOI: 10.1139/tcsme-2024-0020

Jiatai Chen, Hao Wang, Botao Su, Zhuoxian Li

{"title":"Rolling bearing fault diagnosis based on DRS frequency spectrum image and improved DQN","authors":"Jiatai Chen, Hao Wang, Botao Su, Zhuoxian Li","doi":"10.1139/tcsme-2024-0020","DOIUrl":"https://doi.org/10.1139/tcsme-2024-0020","url":null,"abstract":"Deep learning may encounter challenges in fault diagnosis, such as exploration capability, long-term planning, and handling non-deterministic factors. The paper introduces a novel fault diagnosis method for rolling bearings combining deep Q-network (DQN) with discrete random separation (DRS) frequency spectrum images. DRS can be used to separate the deterministic components and random components of the fault signal and extract the fault feature very effectively. The improved DQN incorporates the atrous spatial pyramid pooling module for multiscale contextual fault feature extraction, enhancing diagnosis accuracy. Various deep networks, including convolutional neural network, ResNet18, traditional DQN, and the improved DQN, are employed with different frequency spectrum images (power spectral density, cepstrum, and DRS) for diagnosing bearing faults. Simulation results demonstrate that combining DRS frequency spectrum images with the improved DQN enhances fault diagnosis accuracy across diverse conditions. Generalization tests reveal strong capability of the proposed method in handling conditions different from the training data. Validation tests on difficult-to-diagnose fault data from the CWRU-bearing dataset demonstrate commendable performance of the improved DQN, even on difficult datasets. Finally, validation tests using the XJTU–SY bearing dataset reaffirm the excellent performance and robust adaptability of the improved DQN in conjunction with DRS frequency spectrum images.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141266517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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