Review
Engineering, Civil
Mohamed Elchalakani, Thumitha Mandula Higgoda, Mehrdad Kimiaei, Bo Yang
Summary: This paper provides a comprehensive review of experimental studies on pultruded and pullwound FRP tubular members, focusing on the developments of connections related to these members in the past decade. The scope of the review is limited to member, connection, and full-scale frame behavior. Published works on failure modes, results, and conclusions are discussed and compared. The review concludes with a summary and recommendations for future research.
Article
Mechanics
Mohammad Alhawamdeh, Omar Alajarmeh, Thiru Aravinthan, Tristan Shelley, Peter Schubel, Ali Mohammad, Xuesen Zeng
Summary: This paper proposes a design tool that combines experimental and numerical methods to investigate the failure modes of hollow PFRP profiles under four-point bending. The validated finite element model was used to thoroughly study the failure sequence and conduct a comprehensive parametric study on design parameters.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Thumitha Mandula Higgoda, Mohamed Elchalakani, Mehrdad Kimiaei, Xiao Guo
Summary: This paper presents an experimental and numerical investigation on bolted steel endplates with bonded sleeve connections for connecting pultruded GFRP circular tubular beams. The moment-rotational responses were studied in terms of initial rotational stiffness, moment capacity, and rotation capacity. The effect of endplate thickness and bonded sleeve length was also examined. The failure modes include bending and yielding of thinner endplates, as well as splitting failure in the bonded GFRP beam region for thicker endplates with low bonded sleeve lengths.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Lele Sun, Zeqi Liang, Min Cai, Chang Liu, Peijun Wang, Mei Liu, Fangzhou Liu
Summary: This study investigates the seismic performance of connections strengthened with H-steel stiffener, showing that H-steel stiffener can improve the ultimate rotation and energy dissipation of the connections. Design recommendations include the use of H-steel stiffener, especially extended ones, and measures to reduce slip displacement.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Mechanics
Peng Feng, Zhiyuan Li, Jie Wang, TianQiao Liu
Summary: A novel joint inspired by ancient timber structures was proposed for pultruded FRP beams and concrete-filled FRP columns, providing a feasible solution for FRP frame structures. Experimental and analytical studies were conducted to assess the structural behavior and develop a design method for the joint. The joint, composed of FRP composites and concrete, exhibited excellent corrosion resistance.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Omar Alajarmeh, Xuesen Zeng, Thiru Aravinthan, Tristan Shelley, Mohammad Alhawamdeh, Ali Mohammed, Lachlan Nicol, Alexander Vedernikov, Alexander Safonov, Peter Schubel
Summary: Research on the compressive behavior of Pultruded Fibre Reinforced Polymer (PFRP) profiles reveals that continuous-wound fibers help prevent splitting failure and result in better structural performance in rectangular profiles compared to square profiles. Increasing the Length-to-Depth (L/D) ratio improves displacement buckling capacity but reduces stiffness and strength.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Mohammad Alhawamdeh, Omar Alajarmeh, Thiru Aravinthan, Tristan Shelley, Peter Schubel, Ali Mohammed, Xuesen Zeng
Summary: This research proposes a fast-converging numerical approach that combines Finite Element Modelling (FEM) and Genetic Algorithm (GA) to design the optimal configuration against local buckling. The study validates the approach experimentally and generates a practical design chart linking the profile geometry to the ultimate load capacity.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Lele Sun, Zeqi Liang, Min Cai, Xinyu Liu, Peijun Wang
Summary: Research results show that using different types of inner stiffeners can improve the punching shear resistance of the HSSC wall in TSOB-EC connection, preventing TSOB pulling-out failure and enhancing the deformation capacity of TSOBEC. The type of stiffener has an impact on the yield bending moment and peak bending moment of TSOBEC.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Rui Yan, Haohui Xin, Milan Veljkovic, Luis Simoes Da Silva
Summary: In traditional end plate column splices, bolts are symmetrically placed on the four sides of square hollow sections. However, when the end plate is flushed on one or two sides for the column along the facade or at the corner of a building, the traditional analytical solution is not valid. This paper investigates the tensile behavior of asymmetric column splices using experimental, finite element, and component method approaches.
THIN-WALLED STRUCTURES
(2023)
Article
Mechanics
Mohammad Alhawamdeh, Omar Alajarmeh, Thiru Aravinthan, Tristan Shelley, Peter Schubel, Michael Kemp, Xuesen Zeng
Summary: This paper presents a numerical study on the local buckling and compressive failure of hollow PFRP profiles under axial compression, using the Newton method and adaptive stabilisation scheme in Abaqus 2019. The numerical predictions were validated by experiments. The energy parameters and constituent failure modes were used to explain the effects of dimension, layup, and slenderness ratio on the post-peak behavior and failure modes of the PFRP profiles.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Mihaela Iordachescu, Andres Valiente, Maricely De Abreu, Patricia Santos, Elena Scutelnicu
Summary: This paper analyzes the cause of failure in a traffic signaling overhead porticoed structure on a major highway in Spain. The failure, which occurred after over 30 years of service, is attributed to environmentally induced fatigue initiators and the galvanized condition of the bolts.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Civil
Redhwan M. Algobahi, Mohamed Abdel-Basset Abdo, Mohammed F. M. Famy
Summary: This study proposes a resilience-based design approach that considers the correlation between the resilience response of self-centering post-tensioned (SCPT) steel beam to column connections and the inelastic performance of the required energy dissipation (ED) system. By conducting three-dimensional finite element modeling and extracting design charts, the optimum design for increasing resilience was found in a numerically validated reference steel connection.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Yuanjian Liu, Lele Sun, Yue Zhang, Le Liu, Mei Liu, Peijun Wang, Wenchao Zhang
Summary: In this study, ten tests were conducted to investigate the connection between bolted T-stubs and square hollow section column (SHSC) using thread-fixed one-side bolts (TOBs). The results showed that the tensile strength of the connections was significantly improved by the use of backing plates, and the failure mode changed from thread shear failure to SHSC wall yielding. The effects of bolt diameter, bolt gauge distance, and column wall thickness on the failure mode and tensile strength of the connections were also examined.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Thumitha Mandula Higgoda, Mohamed Elchalakani, Mehrdad Kimiaei, Adam Wittek, Bo Yang
Summary: This study proposes multiplanar truss bridges made of glass-fibre reinforced polymer circular tubular profiles with innovative non-metallic connections. Through testing and calculation analysis, the performance and load capacity of these bridges were evaluated. The results show that the use of GFRP rods and GFRP wrapping in the connections can improve the ultimate strength and ductility of the bridges.
Article
Construction & Building Technology
Jie Liu, Tong Guo, Yang Wei, Libin Wang, Xingxing Zou
Summary: This paper examines the influence of pre-tightening forces on bolted connections for double-lap FRP-steel joints. Experimental tests and finite element analysis were conducted, and it was found that the load capacity of the specimens was significantly affected by the pre-tightening forces. The highest loading capacity was recorded for the specimen with a preloading of 6 N.m, and a pretightening coefficient of 750 m(-1) was determined through FE analysis.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Muhammad Tahir Lakhiar, Yu Bai, Leong Sing Wong, Suvash Chandra Paul, Vivi Anggraini, Sih Ying Kong
Summary: This paper examined the properties of epoxy mortar produced using industrial wastes, such as coal bottom ash and micro fillers. The results showed that the epoxy resin to filler ratio significantly influenced the properties of the mortar, with ground coal bottom ash leading to higher mechanical properties and lower water absorption and shrinkage. Additionally, the mechanical strengths improved as the content of micro fillers increased.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Multidisciplinary
N. Mai-Duy, D. Strunin, W. Karunasena
Summary: The study examines the numerical performance of several approximation schemes based on one-dimensional IRBFs for computing high-order derivatives, showing significant improvement in solution accuracy by including nodal values of high-order derivatives. By utilizing extended precision floating point arithmetic, overlapping domain decomposition, and mixed-precision calculations, the efficiency of the approximation schemes is enhanced. The proposed 1D-IRBFs with fixed and variable RBF widths achieve high rates of convergence in solving differential problems and simulating convection-diffusion equations for highly-nonlinear flows.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Engineering, Civil
Cheav Por Chea, Yu Bai, Yihai Fang, Yiming Zhang
Summary: Reciprocal frame structures using GFRP members were developed in this study, with a mathematical model for geometric forming and capacity design. An innovative connection configuration was developed to facilitate assembly and minimize tool requirements. Experimental results supported the conceptual design and modeling analysis, verifying proposed evaluation methods and mechanical performance of the structure.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Yi-Ming Zhang, Hao Wang, Yu Bai, Jian-Xiao Mao, Yi-Chao Xu
Summary: Massive data collected by the structural health monitoring system are valuable for assessing structural conditions. However, data missing is a common issue that compromises the reliability of data-driven methods. This study presents a Bayesian dynamic regression method to accurately reconstruct missing data, showing excellent performance in terms of computational efficiency and accuracy.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2022)
Article
Mechanics
Yiqing Dai, Yu Bai, Thomas Keller
Summary: This study investigates the application of glass fibre reinforced polymer (GFRP) components and amorphous silicon (a-Si) photovoltaic cells in buildings. By monitoring specimens exposed to outdoor sunlight, the correlation between sunlight intensities and temperature responses was quantified. The study also shows that non-uniform distribution of strains leads to voltage reductions in integrated PV cells.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Wei Hong Ng, Sih Ying Kong, Yie Sue Chua, Yu Bai
Summary: This paper investigated the tensile pull-out responses of an innovative one-sided bolt in the application of concrete-filled tubular connection. The optimal anchorage configuration was determined based on stiffness, tensile capacity, and ease of fabrication. Parametric studies were performed to investigate the effects of various parameters on the overall connection behavior and strength.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Civil
Omar F. Otoom, Weena Lokuge, Warna Karunasena, Allan C. Manalo, Togay Ozbakkaloglu, Mohammad R. Ehsani
Summary: This paper presents experimental, numerical, and theoretical investigations on the flexural behaviour of circular RC columns strengthened by a GFRP wrapping system. The results demonstrate that the GFRP wrapping system significantly enhances the flexural load capacity and ductility of the columns.
Article
Engineering, Civil
Omar F. Otoom, Weena Lokuge, Warna Karunasena, Allan C. Manalo, Togay Ozbakkaloglu, Mohammad R. Ehsani
Summary: Prefabricated glass fibre reinforced polymer (GFRP) wrapping systems have been established as an attractive retrofitting technique for structural columns. This study focuses on the contribution of GFRP wrapping systems to the flexural performance of timber columns and finds that columns wrapped with epoxy infills exhibit a significant increase in flexural capacity, while those with grout infills show improved ductility.
Article
Forestry
Rebecca Cherry, Warna Karunasena, Allan Manalo
Summary: This study investigated the mechanical properties and the effects of resin, knots, and pith on low-stiffness out-of-grade PEE x PCH. The results showed that resin increased density and had similar performance to clear wood. Knots had a negative impact on tensile strength, and pith samples differed significantly in structural performance.
Article
Engineering, Mechanical
T. Tafsirojjaman, Allan Manalo, Cam Minh Tri Tien, Brad P. Wham, Ahmad Salah, Shanika Kiriella, Warna Karunasena, Patrick Dixon
Summary: This study analyzes and models the failure modes of pipe-in-pipe systems and investigates the effects of thickness and elastic modulus on these modes. The study reveals that lateral deformation is the most critical failure mode, followed by internal pressure. The results provide useful design tools for pipeline repair.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Mechanical
C. M. T. Tien, A. Manalo, P. Dixon, T. Tafsirojjaman, W. Karunasena, W. W. Flood, H. Ahmadi, S. Kiriella, Ahmad Salah, B. P. Wham
Summary: This paper investigates the effect of the sharp edge of the legacy pipe opening on the pipe-in-pipe (PIP) systems under internal pressure. Several design parameters, including the bonding condition of the PIP to the host pipe, the material properties of the PIP system, and the level of sharpness of the host pipe ends, are evaluated. The numerical results show that without bonding, the PIP can deform around the edge of the host pipe, minimizing stress concentration.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Construction & Building Technology
Huu Tran, Weena Lokuge, Sujeeva Setunge, Warna Karunasena
Summary: This case study investigates the deterioration of reinforced concrete culverts at the network and cohort levels using a Markov model and influential factors and inspected condition data. The Markov deterioration model can forecast the future deterioration of a culvert network, which is important for asset management planning.
JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES
(2022)
Article
Geosciences, Multidisciplinary
Barbara Ryan, Rachel King, Weena Lokuge, Warna Karunasena, Esther Anderson
Summary: Preparation for natural hazards has been proven to reduce losses and improve disaster recovery. This study examined preparation activities in a bushfire-vulnerable area in Queensland, Australia, and identified weak areas in evacuation planning and safety planning. Emergency agencies and community engagement practitioners can use cluster-based research to improve messaging in bushfire preparation campaigns and encourage specific safety behaviors, thus enhancing the safety of people and property.
Review
Construction & Building Technology
Chenting Ding, Yu Bai, Yihai Fang, Fengyi Huang, Mehrdad Arashpour
Summary: Modular construction has become the preferred choice for building medical and quarantine facilities during the pandemic due to its high degree of prefabrication and fast assembly. The floor layout design should carefully consider the prevention of cross infection, and ventilation systems play a crucial role in supplying clean air and creating negative air pressure. This paper provides a focused review of the structural forms, floor layout design, and equipment arrangements of modular medical and quarantine facilities, highlighting the importance of construction management technologies.
JOURNAL OF ARCHITECTURAL ENGINEERING
(2022)
Proceedings Paper
Engineering, Civil
Omar Alajarmeh, Allan Manalo, Karu Karunasena, Brahim Benmokrane, Priyan Mendis
Summary: This study systematically investigates the effect of major design parameters controlling the structural behavior of HCC reinforced with GFRP bars. The study demonstrates the effective use of GFRP bars as internal reinforcements for reliable, safe, and durable HCCs.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
Article
Engineering, Multidisciplinary
Keyu Zhu, Xitao Zheng, Jing Peng, Jiaming Sun, Ruilin Huang, Leilei Yan
Summary: This paper discusses the influence of multiple impacts on the compression strength of honeycomb sandwich structures with composite face sheets. It is found that the size of the impactor affects the turning point of the compression strength. Additionally, high impact energy leads to damage in the bottom face sheet and reduces the overall compression strength.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Danqian Wang, Yanfei Yue, Jueshi Qian
Summary: Magnesium Potassium Phosphate Cement (MKPC) as a binder for steel rebars shows improved corrosion resistance when subjected to carbonation, due to the increase in pH and the formation of a more protective oxide film.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhibin Li, Wenyu Wang, Pengcheng Xue, Xingyu Wei, Jian Xiong
Summary: This work proposes a design approach and manufacturing method for carbon fiber reinforced plastic (CFRP) corrugated sandwich truncated cones (CSTC) to improve their anti-debonding ability and ensure reliability. The study establishes theoretical models for CSTCs' stiffness and failure modes, which are verified through experiments and finite element analysis (FEA). The research reveals the effect of geometric parameters on failure modes and performs an optimal design for CSTC structures. The findings have significant implications for the design and application of lightweight CSTCs in constructions, such as launch vehicle adapters.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mingyu Zhang, Lei Chu, Jiahua Chen, Fuxun Qi, Xiaoyan Li, Xinliang Chen, Deng-Guang Yu
Summary: This review summarizes the different structures and construction methods of fibrous membranes with asymmetric wettability. It also reviews the biological applications of these membranes and suggests future challenges.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
E. Mofakhami, L. Gervat, B. Fayolle, G. Miquelard-Garnier, C. Ovalle, L. Laiarinandrasana
Summary: This study investigates the effects of fibre concentration on the mechanical response of welded glass-fibre-reinforced polypropylene (GF-PP). Experimental observations reveal a significant reduction in weld ratio, up to 60%, indicating a decreased strength compared to the bulk material. Increasing fibre content in the welded material results in a decrease in stress at break and strain at the maximum stress. The use of DIC technique and X-ray microtomography further confirms the localized strain amplification in the welded zone due to the significant increase in fibre density.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Emad Pourahmadi, Farjad Shadmehri, Rajamohan Ganesan
Summary: This research compares the mechanical properties of laminates manufactured using automated fiber placement and conventional autoclave curing methods. The results show that laminates manufactured using automated fiber placement have a lower interlaminar shear strength compared to laminates reconsolidated using autoclave curing. A finite element simulation method is proposed to quantitatively analyze these differences.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Johnny Jakobsen, Benny Endelt, Fahimeh Shakibapour
Summary: This study proposes a new bolted/pinned joining method for composite applications, which improves load transfer by introducing a patch-type reinforcement. Experimental results demonstrate significant improvements in both static and fatigue load conditions compared to existing methods. Finite element simulations highlight the advantage of this method, as it creates a more efficient load-transferring mechanism through different stress distributions.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper proposes a novel approach to assess multi-crack behavior in layered fiber-polymer composites. The generated Compliance and R-curves provide useful insights into understanding the multiple delamination process and allow for separate evaluation of strain energy release rate (SERR) for each crack. The developed cohesive zone model successfully simulates the failure process zone of three parallel cracks, showing good agreement between the numerical model and experimental results.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Renil Thomas Kidangan, Sreedhar Unnikrishnakurup, C. Krishnamurthy, Krishnan Balasubramaniam
Summary: The induction heating process can accurately identify fiber orientation and stacking order, making it a valuable tool for large-area inspection and quality control in manufacturing fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Sungjun Hwang, Yousoo Han, Douglas J. Gardner
Summary: Bleached Kraft pulp, unbleached Kraft pulp, and old corrugated cardboard pulp are suitable for producing cellulose nanofibril suspensions. Spray drying is a fast, simple, cost-effective, and scalable drying method. Spray-dried cellulose nanofibrils can be used as reinforcing materials in polypropylene matrices. The particle size of cellulose nanofibrils affects the material properties.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mehdi Mahdavi, Abbas Zolfaghari
Summary: This study aims to improve the recovery forces of shape memory polymers (SMPs) through material extrusion additive manufacturing. By using glass fiber (GF) as reinforcement and manufacturing multi-layer composite specimens, it was found that PLA with 6.62% GF exhibited the best recovery force, which was further optimized through annealing heat treatment.
COMPOSITES PART B-ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Xiang Ao, Antonio Vazquez-Lopez, Davide Mocerino, Carlos Gonzalez, De-Yi Wang
Summary: The vulnerability of natural fibers to heat and fire poses a significant challenge for their substitution of traditional fiber reinforcements in composite materials. Natural fiber/polymer composites (NFCs) are regarded as potential candidates for engineering applications due to their environmental friendliness and low-impact sourcing. Thus, appropriate approaches need to be implemented to enhance the fire safety of NFCs. This review summarizes and discusses the latest understanding of flammability and thermal properties of natural fibers, with a special focus on their interaction with polymer matrix in fire behavior. Additionally, the latest developments in flame-retardant approaches for NFCs are reviewed, covering both flame retardancy and fire structural integrity. Finally, future prospects and perspectives on fire safety of NFCs are proposed, providing insights into further advancements of NFCs.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Cheng Wang, Siqi Huo, Guofeng Ye, Bingtao Wang, Zhenghong Guo, Qi Zhang, Pingan Song, Hao Wang, Zhitian Liu
Summary: The demand for multifunctional, transparent epoxy resin with superior dielectric, mechanical, and fire-safety performances is increasing in modern industries. Researchers have developed an epoxidized, phosphaphenanthrene-containing poly(styrene butadiene styrene) (ESD) for advanced fire-safe epoxy resin, which maintains high transparency and improves UV-blocking property. The addition of 10 wt% ESD results in improved mechanical properties, decreased dielectric constant and loss, and outperformance compared to other fire-safe epoxy resins. This research provides an effective method for developing multifunctional flame-retardant epoxy resin.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bo Pang, Heping Zheng, Zuquan Jin, Dongshuai Hou, Yunsheng Zhang, Xiaoyun Song, Yanan Sun, Zhiyong Liu, Wei She, Lin Yang, Mengyuan Li
Summary: This study develops an internal superhydrophobic material (ISM) using waste denitrification fly ash, which maintains stable hydrophobicity under harsh conditions of use and does not rely on expensive fluor-based surface modifications. The synthesized ISM has excellent matrix strength, strong waterproof properties, and retains superhydrophobicity even at damaged or friction interfaces.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Meirbek Mussatayev, Qiuji Yi, Mark Fitzgerald, Vincent K. Maes, Paul Wilcox, Robert Hughes
Summary: Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. This study designed a directional eddy-current (EC) probe to evaluate the detectability of out-of-plane wrinkles. Experimental evaluations and finite element modeling were conducted to better understand the relationship between eddy-current density and defect detection. The findings suggest that the probe configuration with an asymmetric driver coil and differential pickup coils shows the best capability for wrinkle detection.
COMPOSITES PART B-ENGINEERING
(2024)