Article
Engineering, Manufacturing
Lin Tang, Zhiyong Yang, Yusheng Tang, Junliang Zhang, Jie Kong, Junwei Gu
Summary: The copolymer membrane and AHHFP grafted onto the surface of PBO fibres enhances the interfacial strength and reduces interfacial polarization of the wave-transparent laminated composites. The resulting 6F-PBO@P-GMA fibres/modified cyanate ester composites exhibit higher flexural strength and interlaminar shear strength compared to composites with pristine PBO fibres, with excellent wave-transparency properties at X-band.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Zheng Liu, Xiaoli Fan, Junliang Zhang, Zhiyong Yang, Yusheng Tang, Jianwei Li, Jie Kong, Junwei Gu
Summary: The introduction of hyperbranched structure and fluorine groups in epoxy-preFHBPBO significantly improved the mechanical properties and wave-transparent performance of PBO fibers reinforced BADCy resins composites. The addition of 7 wt% epoxy-preFHBPBO increased the flexural strength and interlaminar shear strength, while reducing dielectric constant and dielectric loss compared to PBO fibers/BADCy composites. Moreover, the volume resistivity and breakdown strength were also enhanced in PBO fibers/FHBPBO-co-BADCy composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Polymer Science
Miroslav Cerny, Josef Petrus, Ivana Chamradova
Summary: This work focuses on describing the mechanical behavior of porous filled composites without simulations or exact physical models. It proposes a mathematical approach involving fitting and interpolation of structural parameters to determine the mechanical properties of the composites.
Article
Engineering, Chemical
Jinping Yin, Xuan Wang, Weiqiang Tang, Xiaofei Xu, Shuangliang Zhao, Fu-zhen Xuan
Summary: Due to the multiscale structural characteristics and complex internal coupling, evaluating the mechanical properties of polymer composites based on their microstructural information is challenging. In this study, a multiscale method is proposed to predict the mechanical properties of polymer composites by considering the contributions from the polymer matrix and particle filling, as well as particle-matrix interactions.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Manufacturing
Hao Tang, Aleksey B. Rogov, Constantinos Soutis, Aleksey Yerokhin
Summary: Metal reinforcements in polymer matrix composites (PMC) provide enhanced architectural freedom and functional capabilities at low cost, but their weak interfacial bonding limits their applications. We used Plasma Electrolytic Oxidation (PEO) to prepare 2D Al2O3/Al woven cores as PMC reinforcements. The alumina coatings reduced fibre tensile strength and modulus, but significantly enhanced the epoxy-fibre interfacial strength, changing the failure mode of the composite. The study demonstrated the utility of the PEO-based approach in preparing hybrid reinforcements for polymer matrix composites with enhanced mechanical behavior.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Polymer Science
Chenping Zhang, Yugang Duan, Hong Xiao, Ben Wang, Yueke Ming, Yansong Zhu, Fugan Zhang
Summary: This paper investigates the interlaminar bond strength of laser in-situ consolidation CF/PEEK thermoplastic composites. The results show that porosity significantly affects the interlaminar shear strength, while there is no correlation between crystallinity and interlaminar shear strength. The interlaminar shear strength in the heated tool in-situ consolidation group is significantly higher than the constant pressure in-situ consolidation group.
Article
Polymer Science
Muhammad Latif, Yangxiaozhe Jiang, Jongmin Song, Jaehwan Kim
Summary: Additive manufacturing technology has revolutionized the manufacturing process of polymer composites by enabling the construction of complex products with unique materials, functions, and structures. However, the printing of high-concentration nanocellulose structures using this technology often faces challenges related to adhesion and shape fidelity. This research presents an economical approach to fabricate structures by printing high-concentration nanocellulose layer-wise patterns. The study demonstrates the successful fabrication of two different composites and highlights the importance of optimal blend compositions and resin infusion methods in achieving high mechanical strength and interface adhesion.
Article
Materials Science, Multidisciplinary
Zhaoxin Zhong, Biao Zhang, Yuhan Ren, Jian Ye, Jiawei Zhang, Feng Ye
Summary: In this study, bioinspired web-liked multiphase composites were successfully constructed using boron-modified polysilazane polymer. The composites consisted of long TiB nanowires as 'web' and hybrid TiC and Ti3Si particles as 'nodes'. The enhanced strength of these composites was attributed to the synergistic load transfer of the hybrid reinforcements. This study provides a promising design approach for developing high-performance composites with high reinforcement content, utilizing polymer instead of traditional ceramic powder.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Composites
Peng Zhuo, Shuguang Li, Ian A. Ashcroft, Ivor A. Jones
Summary: Continuous fibre composite 3D printing technology has the potential to improve the mechanical properties of printed parts, but it is still in the early stages of development. This study aims to establish a practical application demonstrator by conducting preparatory developments in materials, printing process, and properties evaluation.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Alexander Poellinger, Thomas Koch, Stefan Krenn, Fabian Wilde, Domonkos Tolnai, Bernhard Plank, Sarah Heupl, Johannes Bernardi, Karin Whitmore, Marc Langela, Sandra Seichter, Michael Schoebel
Summary: Efficient transport of hydrogen is crucial for the widespread adoption of renewable energy. Reciprocating piston compressors with high strength non-lubricated sealing solutions are key technologies to meet the demands for gas purity and high-pressure gradients in hydrogen applications.
Article
Materials Science, Composites
Zixuan Chen, Tianyu Yu, Yun-Hae Kim, Zetian Yang, Yan Li, Tao Yu
Summary: This study aims to investigate the mechanical properties of basalt fiber reinforced polymers (BFRPs) with the incorporation of different structured nanoclays, and to improve their interfacial bonding through experimental methods. The results show that a flattened nanoclay structure is more effective for enhancing the modulus, and the inclusion of different structured nanoclays also improves the interlaminar strength and toughness of BFRPs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Liping He, Fan Xia, Yuan Wang, Jianmin Yuan, Dachuan Chen, Junchao Zheng
Summary: The study on ASO modified short ramie fiber reinforced polypropylene composites shows that increasing fiber fraction can enhance the tensile and flexural strengths of the composites, as well as improve interface bonding, resulting in better overall performance.
Review
Engineering, Multidisciplinary
Jorge Guillermo Diaz-Rodriguez, Alberto David Pertuz-Comas, Octavio Andres Gonzalez-Estrada
Summary: This work analyses the mechanical properties of continuous fibre-reinforced thermoplastic composites manufactured by FDM, summarizing properties such as tension, bending, shear, impact, and fatigue. The results show a wide variation in mechanical properties and a lack of reporting on certain aspects of damage mechanisms in composites.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Ping Han, Lina Yang, Susu Zhang, Zheng Gu
Summary: By constructing a gradient modulus interfacial microstructure on the carbon fiber surface, the interfacial and mechanical properties of carbon fiber-reinforced polymer-matrix composites (CFRPs) can be significantly improved by chemically grafting a self-assembly carboxyl-terminated hyperbranched polymer (HP-COOH). This work provides a facile and efficient strategy for constructing a superior and versatile interface for high-performance composites.
Article
Polymer Science
Chao Cheng, Chenyu Zhang, Zhengguo Chen, Fei Zhou, Zeyu Sun, Muhuo Yu
Summary: A tackified PDCPD specialized for vacuum assistant resin infusion process (VARI) was developed, with epoxy resin and methyl nadic anhydride (NMA) added to improve interfacial bonding. The mechanical properties of the CFRCs based on the co-cured blends were comprehensively improved compared to those based on the PDCPD-T.
Article
Engineering, Mechanical
C. H. Chin, S. Abdullah, S. S. K. Singh, A. K. Ariffin, D. Schramm
Summary: This study aimed to establish a fatigue life predictive model based on multifractality of road excitations using a neuro-fuzzy method to assess the durability of suspension spring. The neuro-fuzzy models provided accurate fatigue life predictions with a high percentage of data within the acceptance boundary, demonstrating the importance of multifractality in characterizing various road excitations for durability prediction. The Morrow-based fatigue life prediction model showed the most suitable result with three membership functions, highlighting the effectiveness of the adapted method in predicting fatigue life.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2021)
Article
Computer Science, Artificial Intelligence
C. H. Chin, S. Abdullah, S. S. K. Singh, A. K. Ariffin, D. Schramm
Summary: This study proposed a more precise energy characterisation method for energy-based durability prediction of suspension coil spring under random loading conditions.
Article
Engineering, Mechanical
L. Abdullah, S. S. K. Singh, S. Abdullah, A. H. Azman, A. K. Ariffin
Summary: This study assesses the fatigue reliability under random road load strain data from various road conditions, and models the reliability, cycle to failure, and hazard rate based on experimental data to determine fatigue life characteristics.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Mechanical
C. H. Chin, S. Abdullah, S. S. K. Singh, D. Schramm, A. K. Ariffin
Summary: The study aims to develop an acceleration-strain conversion model considering torsional strain and spring curvature effects for inducing strain in a suspension coil spring. By using multibody dynamics simulation to generate strain signals, the need for real strain measurement is reduced. Road tests and simulation data demonstrate that the model accurately predicts fatigue life of the spring.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Thermodynamics
Mahammadsalman Warimani, Muhammad Hanafi Azami, Sher Afghan Khan, Ahmad Faris Ismail, Sanisah Saharin, Ahmad Kamal Ariffin
Summary: This study investigates the effects of thermodynamic detonation parameters on the performance of pulse detonation engines, analyzing the impact of different fuel blends on key metrics like velocity and specific impulse. Results show that hydrogen-air fuel performs exceptionally well, but parameters can vary significantly depending on fuel choice. These findings suggest that hydrogen blends with methane and kerosene are also viable options for PDE applications, a conclusion supported by validation against existing literature and NASA CEA simulations.
Article
Engineering, Mechanical
C. H. Chin, S. Abdullah, A. G. Yin, A. K. Ariffin
Summary: This paper evaluates the modal frequency responses of suspension lower arm under random road excitations to predict fatigue life. Frequency domain method is used to assess the fatigue life using road tests and modal frequency response analysis. Results show that the Dirlik method gives the most accurate prediction compared to time domain approaches.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Mechanical
C. H. Chin, S. Abdullah, S. S. K. Singh, A. K. Ariffin, D. Schramm
Summary: This study aimed to assess the fatigue reliability of a suspension coil spring under different road conditions through probabilistic approaches. Results showed that fatigue reliability deteriorated rapidly under rural road conditions, with the shortest mean-cycles-to-failure (MCTF) of 10^4 cycles, while new road conditions had the longest MCTF of about 10^8 cycles. Surface irregularities on rural roads had the most significant impact on fatigue damage to the coil spring.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Industrial
U. Bhardwaj, A. P. Teixeira, C. Guedes Soares, A. K. Ariffin, S. S. Singh
Summary: This paper presents a methodology for risk assessment and probabilistic modeling of fire and explosion accidents in FPSO units. By analyzing incident data and developing a Bayesian Network model, the paper provides detailed insights into high-risk scenarios specific to FPSOs. The results offer valuable information for FPSO developers and operators to prevent and mitigate fire and explosion accidents.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Green & Sustainable Science & Technology
Mohammad Syuhaimi Ab-Rahman, I-Shyan Hwang, Abdul Rahman Mohd Yusoff, Abdul Wahab Mohamad, Ahmad Kamal Ariffin Mohd Ihsan, Juwairiyyah Abdul Rahman, Mohd Jailani Mohd Nor, Iszan Hana Kaharudin
Summary: Outstanding academic achievement in higher education is a source of pride for the university, which is measured not only by academic performance, but also by the quality of graduates. In Malaysia, higher education is divided into public, private, and foreign-branch universities. All engineering programs must meet the requirements set by the Engineering Accreditation Council (EAC) on behalf of the Board of Engineers Malaysia (BEM). Program educational objectives (PEOs) are one of the elements that need to be assessed to ensure their alignment with the university's mission and vision. A comparative study of PEOs in reputable electrical and electronic engineering departments was conducted, focusing on attribute keywords. The study found that attributes related to competency, ethics, professionalism, and leadership received high priority. However, the increasing demand for entrepreneurship, multidisciplinary, and soft skills should also be considered in reviewing the institution's engineering curriculum.
Article
Engineering, Multidisciplinary
Fauziana Lamin, Ahmad Kamal Ariffin, Intan Fadhlina Mohamed, Cheeranan Krutsuwan
Summary: High-pressure torsion (HPT) is an established technique for material strengthening through severe plastic deformation. This study used finite element simulation to analyze the effects of anvil parameters on stress characteristics during HPT, finding that a 1 mm free flow gap leads to heterogeneous pressure distribution across the sample radius. The results suggest that within certain ranges, both the free flow gap and wall inclination angle can generate continuous strengthening behavior.
JOURNAL OF FAILURE ANALYSIS AND PREVENTION
(2021)
Article
Green & Sustainable Science & Technology
Iszan Hana Kaharudin, Mohammad Syuhaimi Ab-Rahman, Roslan Abd-Shukor, Azamin Zaharim, Mohd Jailani Mohd Nor, Ahmad Kamal Ariffin Mohd Ihsan, Shahrom Md Zain, Afiq Hipni, Kamisah Osman, Ruszymah Idrus
Summary: This article discusses the importance of effective supervision and strategy planning in achieving higher output. By investigating the techniques used by lecturers, the study finds that lecturers who utilize multiple techniques are able to achieve better research outcomes and student performance.
Article
Construction & Building Technology
Ramzi Adriman, Israr Bin M. Ibrahim, Syifaul Huzni, Syarizal Fonna, Ahmad Kamal Ariffin
Summary: Combining field data with computational methods can improve the diagnosis of corrosion in reinforced concrete, enhancing the accuracy and usability of half-cell potential surveys.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Mechanical
A. Arifin, S. Abdullah, A. K. Ariffin, N. Jamaludin, S. S. K. Singh
Summary: The aim of this study was to determine the relationship between fatigue crack length, the number of cycles, the magnetic flux gradient intensity and the stress ratio. Experimental results showed an exponential increase in the magnetic flux gradient as the fatigue cycle and crack length increased. Governing equations were derived based on the magnetic flux gradient, and a statistical analysis of the magnetic flux leakage parameters suggested their potential use in predicting fatigue life as an alternative method.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
C. H. Chin, S. Abdullah, S. S. K. Singh, D. Schramm, A. K. Ariffin
Summary: This study proposes an acceleration-strain conversion model for coil spring in fatigue-durability prediction by considering the load sequence effect. The simulation results show similar fatigue lives with the experimental results, and the root-mean-square-error is significantly reduced from 1.39 to 0.51.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Computer Science, Interdisciplinary Applications
Syahril Amir Mohd, Kok Beng Gan, Ahmad Kamal Ariffin
Summary: The study found that drones have potential applications in transporting blood products, with stable and reliable GPS guidance performance, and the thrust-to-weight ratio playing an important role in flight performance and time. The developed drone successfully simulated the actual test scenario, demonstrating feasibility.
INTERNATIONAL JOURNAL OF ONLINE AND BIOMEDICAL ENGINEERING
(2021)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
