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3rd International Postgraduate Conference on mechanical engineering 2024, IPCME 2024

作者： Razak, Norhaida Ab Rosli, Siti Nur Atikah Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Pahang Pekan26600 Malaysia

The work presented in this study was performed to characterize the P91 base and weld metal by assessing the microstructure, tensile behaviour, hardness profile, creep behaviour and fracture morphology. Tensile test and short-term creep were performed on both the base and weld metal. For material characterisation, the optical microscope and hardness testing were employed. The fracture surface of the creep ruptured specimen was analyzed by SEM. The transgranular fracture mode was observed in both the base and weld material. © Published under licence by IOP Publishing Ltd.

关键词： Tensile testing

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Lightweight Hybrid Composite B-Pillars for automotive Applications;Flexural Performance Evaluation 3

Lightweight Hybrid Composite B-Pillars for Automotive Applic...

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3rd International Postgraduate Conference on mechanical engineering 2024, IPCME 2024

作者： Ibrahim, M.I. Rejab, M.R.M. Alang, N.A. Rani, M.F. Faculty of Engineering and Technology DRB-HICOM University of Automotive Malaysia Pekan Pahang26607 Malaysia Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang26600 Malaysia

An automobile's B-pillars are specifically intended to effectively absorb collision energy while minimizing deformation to ensure minimal intrusion into the vehicle's interior. This study investigates the development of automotive B-pillars using different composite materials to enhance structural property and mechanical performance, aiming to reduce component weight as an alternative to traditional steel. Specifically three combinations of hybrid composite B-pillars were fabricated using 3 layers of carbon fibre as base material. The components were reinforced at the critical area with different and hybrid configurations: two aramid fibre interlayers, two glass fibre interlayers, and a hybrid patch comprising carbon and glass fibre layers. Fabrication process employed a conventional hand lay-up technique producing a full-size B-pillar of an A-segment vehicle. Weight reduction of the fabricated composite-based pillars is between 33% to 56% lighter than original steel pillar. Experimental three-point flexural tests with incorporation of strain gauges were conducted to evaluate flexural characteristics and strain responses. Results indicate that interlayer-reinforced composite pillars demonstrated superior flexural resistance compared to lightest patch-reinforced pillar, which exhibited lower energy absorption capabilities. The CGCGC configuration shows the greatest force resistance, with a peak force only 2% higher than the CACAC. Additionally, CGCGC withstands a 9% greater displacement before failure. Strain measurements confirm the observed load-displacement behaviours across all samples. The CGCGC hybrid B-pillar demonstrates significant potential for future applications, offering a 43% weight reduction and a 50% increase in energy absorption. This research highlights the viability of composite materials, particularly those utilizing interlayer hybrids, as robust and lightweight alternatives to steel for automotive B-pillar applications. © Published under licence

关键词： Aramid fibers

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On the Influence of Thickness Non-uniformity on mechanical Behaviour under Small Punch Load 3

On the Influence of Thickness Non-uniformity on Mechanical B...

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3rd International Postgraduate Conference on mechanical engineering 2024, IPCME 2024

作者： Pandit, S.C. Alang, N.A. Ferdous, I.U. Alias, J. Hassan, M.F. Razak, N. Ab. Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan26600 Malaysia

The Small punch (SP) test is an alternative method to determine the mechanical properties of various materials, including metallic and non-metallic. It uses a relatively small amount of material as a test sample and causes minimum damage to the components during sample extraction, giving it advantages over conventional test methods. However, preparing SP samples with accurate and uniform thickness is challenging. This issue leads to inconsistency in the mechanical properties data obtained from the SP test. The present study numerically investigates the effect of non-uniform sample thickness on the displacement-force data of alloy steel under small punch load at room temperature. The thickness of the sample varies in both radial and through-thickness directions to simulate real material conditions during the laboratory sample preparation stage. This variation in thickness is modelled in Finite Element (FE) Abaqus v6.14 software, considering axis-symmetric conditions. Appropriate load, boundary conditions, and mesh design are assigned to the model. It is found that the non-uniformity of the sample in through-thickness direction affects the displacement-force behaviour of the material. Furthermore, the stress and strain distribution are also affected. The displacement-force response, however, remains constant under the effect of radial non-uniformity. Based on the study, it can be concluded that sample preparation is a critical stage which requires exceptional attention to obtain reliable results in the SP test. © Published under licence by IOP Publishing Ltd.

关键词： ABAQUS

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Artificial Intelligence Revolutionising the automotive Sector:A Comprehensive Review of Current Insights, Challenges, and Future Scope

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Computers, Materials & Continua 2025年第3期82卷 3643-3692页

作者： Md Naeem Hossain MdAbdur Rahim Md Mustafizur Rahman Devarajan Ramasamy Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan AbdullahPekan26600Malaysia Institute for Intelligent Systems Research and Innovation(ISSRI) Deakin UniversityWarun PondsVIC3216Australia Automotive Engineering Centre Universiti Malaysia Pahang Al-Sultan AbdullahPekan26600Malaysia

The automotive sector is crucial in modern society,facilitating essential transportation needs across personal,commercial,and logistical domains while significantly contributing to national economic development and employment *** transformative impact of Artificial Intelligence(AI)has revolutionised multiple facets of the automotive industry,encompassing intelligent manufacturing processes,diagnostic systems,control mechanisms,supply chain operations,customer service platforms,and traffic management *** extensive research exists on the above aspects of AI applications in automotive contexts,there is a compelling need to synthesise this knowledge comprehensively to guide and inspire future *** review introduces a novel taxonomic framework that provides a holistic perspective on AI integration into the automotive sector,focusing on next-generation AI methods and their critical implementation ***,the proposed conceptual framework for real-time condition monitoring of electric vehicle subsystems delivers actionable maintenance recommendations to stakeholders,addressing a critical gap in the *** review highlights that AI has significantly expedited the development of autonomous vehicles regarding navigation,decision-making,and safety features through the use of advanced algorithms and deep learning ***,it identifies advanced driver assistance systems,vehicle health monitoring,and predictive maintenance as the most impactful AI applications,transforming operational safety and maintenance efficiency in modern automotive *** work is beneficial to understanding the various use cases of AI in the different automotive domains,where AI maintains a state-of-the-art for sector-specific applications,providing a strong foundation for meeting Industry 4.0 needs and encouraging AI use among more nascent industry *** current work is intended to consolidate previous works while shedding som

关键词： Artificial intelligence AI techniques automotive sector autonomous vehicle decision-making VHMS

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Efficient Locomotion Control of a Quadruped Robot Using Inverse Kinematics and PID Controller 3rd

Efficient Locomotion Control of a Quadruped Robot Using Inve...

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3rd International Conference on Advances in Information and Communication technology, ICTA 2024

作者： Nguyen, Van-Truong Nguyen, Ngoc-Quyet Hoang, Tien-Dung Bui, Thanh-Lam Dang, Van-Truong School of Mechanical and Automotive Engineering Hanoi University of Industry Hanoi Viet Nam Faculty of Engineering Technology Hung Vuong University Viet Tri Viet Nam

ISBN: (纸本)9783031809422

In this study, an effective control system for a quadruped robot is developed, integrating inverse kinematics and PID control for precise locomotion on flat terrain. The inverse kinematics of the robot calculates the necessary joint angles to achieve the desired end-effector position, while the PID controller ensures smooth and stable adjustments. The system's performance is evaluated through simulation conducted in a controlled environment. The simulation results demonstrate the system's ability to maintain stability and achieve accurate movements under the given conditions. This control approach is essential for efficient and reliable locomotion of the quadruped robot. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Inverse kinematics

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Adaptive Reduced Fuzzy Decoupling Control for Lower Limb Exoskeleton with Uncertainties 3rd

Adaptive Reduced Fuzzy Decoupling Control for Lower Limb Exo...

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3rd International Conference on Advances in Information and Communication technology, ICTA 2024

作者： Nguyen, Van-Truong Tran, Duc-Duong Le, Ngoc-Duy Dang, Van-Truong School of Mechanical and Automotive Engineering Hanoi University of Industry Hanoi Viet Nam Faculty of Engineering Technology Hung Vuong University Viet Tri Viet Nam

ISBN: (纸本)9783031809422

In this paper, an adaptive reduced fuzzy decoupling controller is developed for a lower limb rehabilitation exoskeleton robot (2-DOF) in the case of uncertainties. With decoupled control, the initial overall MIMO system is separated into a set of individual MISO subsystems for independent control. A simplified adaptive fuzzy is proposed to reduce computation time, addressing the issues of traditional fuzzy systems. The controller has good control quality, tracking the human gait motion trajectory with uncertainty. Simulation results show that the proposed controller performs better than the traditional fuzzy controller. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Exoskeleton (Robotics)

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Enhancing Surface Hydrophobicity of AISI 304 Stainless Steel via Laser Texturing 3

Enhancing Surface Hydrophobicity of AISI 304 Stainless Steel...

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3rd International Postgraduate Conference on mechanical engineering 2024, IPCME 2024

作者： Isa Rahim, M. Aqida, S.N. Salwani, M.S. Ahmad Syarizan, S. Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang26600 Malaysia Automotive Engineering Centre Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang26600 Malaysia

The wettability performance of 304 stainless steel surfaces that were treated by multipulse laser processing under different parameters is studied in this paper. For modifying the surface of stainless steel, we used an x-y computer numerical control (CNC) fibre laser system with a 1064 nm wavelength. The hydrophobicity of all surfaces was evaluated through water contact angles (WCA) at different translational speeds (20-150 mm/s) and laser powers (4-20 W). Results show a spectrum of surface wettability ranging from hydrophilic (WCA © Published under licence by IOP Publishing Ltd.

关键词： Wetting

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The Influences of the Fluid Initial Temperature and Fluid Flow Rate to the Boiling Heat Transfer: A Short Review 3

The Influences of the Fluid Initial Temperature and Fluid Fl...

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3rd International Postgraduate Conference on mechanical engineering 2024, IPCME 2024

作者： Shaidan, Faiz Basrawi, Firdaus Yudin, Ahmmad Shukrie Md Azman, Nurul Aini Mohd Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang26600 Malaysia Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Gambang Pahang26300 Malaysia

Recently, Low Temperature Vacuum Drying with induced Nucleation Boiling (LTVD-NB) has been studied for water reduction methods. However, low dewatering temperature led to longer drying process. Hence, to improve the LTVD-NB dewatering performance, the study on Boiling Heat Transfer (BHT) such as parameters, conditions and phenomena that may affect the heat transfer in boiling process should be understood further. Currently, some of parameters such as dewatering temperature, surface roughness, and initial water content effects in LTVD-NB have been discovered. However, the effect of the fluid initial temperature and hot water flow rate to the BHT in LTVD-NB is still unclarified. Hence, the objective of this paper is to review and examine the influences of fluid initial temperature and the effect of fluid flow rate to the BHT. In general, the result shows that the higher fluid initial temperature and flow rate significantly enhanced the BHT. As a result, the BHT in LTVD-NB system can be improved which will significantly improve the dewatering process of honey in the future. © Published under licence by IOP Publishing Ltd.

关键词： Low temperature drying

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Optimizing Weld Design Layout for Enhanced Crashworthiness 3

Optimizing Weld Design Layout for Enhanced Crashworthiness

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3rd International Postgraduate Conference on mechanical engineering 2024, IPCME 2024

作者： Arifin, Suyani Salleh, Salwani Mohd Ahmad, Syarifah Nur Aqida Syed Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang26600 Malaysia Department of Mechanical Engineering Muadzam Shah Polytechnic Lebuhraya Tun Razak Muadzam Shah Pahang26700 Malaysia

Crash boxes play a crucial role in this effort by absorbing kinetic energy during collisions, which not only reduces the impact on passengers but also lowers repair costs. This study focuses on optimizing the specific energy absorption (SEA) and initial peak force (IPF) of a crash box using the Response Surface Method (RSM). For an ideal impact energy absorber, the IPF should be minimized while maximizing SEA. In this experiment, AA6061-T6 sheet metal with dimensions of 220 x 200 x 1.5 mm was bent to form a single-hat column. A second piece of AA6061-T6, measuring 200 x 100 x 1.5 mm, was cut and spot welded to the first part. The spot welds were applied at three different distances from the top and bottom edges (10 mm, 20 mm, and 30 mm), and with four different spot weld numbers (N = 7, 8, 9, and 10). Optimization based on experimental results revealed that the best configuration involved a distance of 26.415 mm from the top and bottom edges and a spot weld number of 8.454. However, for practical purposes, these values were rounded, and it was found that the N8D30 configuration was the most optimal specimen. The experimental findings were in agreement with the optimized values obtained using the RSM method. In conclusion, applying the optimal spot weld design layout to the crash box structure can significantly enhance safety and reduce vehicle damage during accidents. © Published under licence by IOP Publishing Ltd.

关键词： Crashworthiness

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Linear Parameter Varying and Reinforcement Learning Approaches for Trajectory Tracking Controller of Autonomous Vehicles

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Periodica Polytechnica Transportation engineering 2025年第1期53卷 94-102页

作者： Mihály, András Vu, Van Tan Do, Trong Tu Thinh, Kieu Duc Van Vinh, Nguyen Gáspár, Péter Hungarian Research Network Kende u. 13-17 BudapestH-1111 Hungary Department of Control for Transportation and Vehicle Systems Faculty of Transportation and Vehicle Engineering Budapest University of Technology and Economics Műegyetem rkp. 3 BudapestH-1111 Hungary Department of Automotive Mechanical Engineering Faculty of Mechanical Engineering University of Transport and Communications Building A6 no. 3 Cau Giay Street Lang Thuong Ward Dong Da District Hanoi100000 Viet Nam Mechanical and Power Engineering Faculty Building M Electric Power University no. 235 Hoang Quoc Viet Street Co Nhue Ward Bac Tu Liem District Hanoi100000 Viet Nam Division of Automotive Engineering Faculty of Mechanical Engineering Thuyloi University no. 175 Tay Son Street Dong Da District Hanoi Viet Nam

This research focuses on controlling the motion trajectory of autonomous vehicles by using a combination of two high-performance control methods: Linear Parameter Varying (LPV) and Reinforcement Learning (RL). First, a single-track motion model is researched and developed with coordinate systems to determine the car's motion trajectory through signals from GPS. Then, the LPV control method is used to design a controller to control the car's motion trajectory. Reinforcement learning method with detailed training procedures is used to combine with the advantages of LPV controller. Finally, the simulation results are evaluated in the time domain through the use of specialized CarSim software, which clearly demonstrates the superiority of the research method. © 2025 Budapest University of technology and Economics. All rights reserved.

关键词： Reinforcement learning

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