Article
Chemistry, Physical
Dawei Wang, Ye Li, Tianchun Zou, Ji Fu, Zhihao Liu
Summary: This study investigates the effect of oxygen plasma treatment on the surface of CFRP and its bonding strength and fracture toughness. The results show that the treatment significantly improves the performance of the bonded joints by removing impurities and reorganizing the surface groups. The peel ply plus plasma treatment provides better performance compared to plasma treatment alone, with less strength loss and higher toughness in long-duration plasma treatment-induced surface damage.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jean-Charles Agopian, Olivier Teraube, Karine Charlet, Samar Hajjar-Garreau, Elodie Petit, Nicolas Batisse, Marc Dubois
Summary: The study demonstrates that fluorination of carbon fibers can alter the hydrophobic behavior of the fiber surface, and the fluorination temperature has a significant impact on the fluorination effect, with higher temperatures resulting in carbon fiber lattice fluorination and desizing of the fibers.
APPLIED SURFACE SCIENCE
(2022)
Review
Polymer Science
Sofia Maggiore, Mariana D. Banea, Paola Stagnaro, Giorgio Luciano
Summary: Hybrid joining techniques combine different joining methods to create joints with improved properties. They are widely used in various industries and the research on structural adhesives in hybrid joining processes shows promising potential for reducing mass and manufacturing costs.
Review
Materials Science, Multidisciplinary
Peiyuan Zuo, Anastasios P. Vassilopoulos
Summary: Studies have investigated the fatigue behavior of structural adhesives mainly in construction industry, focusing on joint configurations and practical applications. Previous research has shown similar material properties in thin adhesive joints, but with thicker bondlines dominating joint behavior as structural adhesives are introduced in construction industry.
INTERNATIONAL MATERIALS REVIEWS
(2021)
Article
Engineering, Environmental
Bhagya Dharmasiri, Ken Aldren S. Usman, Si Alex Qin, Joselito M. Razal, Ngon T. Tran, Piers Coia, Timothy Harte, Luke C. Henderson
Summary: MXene-coated carbon fibers were developed as electrode materials for structural supercapacitor composites. The surface chemistry of carbon fibers was tailored to optimize MXene adhesion. The electrodes exhibited improved capacitance and interfacial adhesion, making them suitable for various applications in aerospace, automotive, and renewable energy storage sectors. The lightweight multifunctional supercapacitor composite holds great potential in addressing global challenges tied to fossil fuel combustion.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Marvin Kaufmann, Florian Flaig, Michael Mueller, Holger Fricke, Till Vallee
Summary: The application of adhesives in the manufacturing industry offers new possibilities that have not been fully utilized. A global view on adhesive bonding is needed, including consideration of adhesive flow during application and joining of substrates. Research is needed to develop innovative approaches for designing adhesive application patterns that minimize spillage and waste while achieving strong bonds without imperfections. This paper investigates phenomena that can occur during the joining process, such as the formation of air pockets and their behavior. Four different adhesive application patterns were experimentally investigated and analyzed. It was found that existing air pockets can reform and cure into flat cavities, which are critical for bonding strength.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Engineering, Civil
Yang Liu, Weimin Zhuang, Yifan Luo, Dongxuan Xie, Wenlong Mu
Summary: This study investigates the joining mechanism and damage of self-piercing riveted joints in carbon fibre reinforced polymer (CFRP) composites and aluminium alloy. A damage constitutive model, accounting for shear effects, is proposed to predict the mechanical behavior and damage evolution of CFRP. Self-piercing riveting (SPR) tests and numerical simulations are conducted to determine the damage patterns and understand the joining mechanism and damage evolution process of the joints. The results show the existence of matrix cracks and fiber cracks around the rivet head in the SPR joints of CFRP and aluminium alloy. The proposed constitutive model can effectively predict the complex damage behaviors of CFRP under large deformations. The direction of delamination damage propagation is consistent with the fiber direction of the lower layer in the SPR joints.
THIN-WALLED STRUCTURES
(2023)
Article
Chemistry, Physical
Roman Gunther, Walter Caseri, Christof Brandli
Summary: This study investigates the treatment of polymer surfaces with jet plasma in the presence of acrylic acid, allowing for the joining of traditionally difficult-to-join polymers such as PS and PA 12. The addition of acrylic acid results in the introduction of oxygen-containing groups on the polymer surfaces. The modified polymer surfaces exhibited significant adhesion when brought into contact and could be separated intentionally by immersion in water, allowing for materials recycling.
Article
Chemistry, Physical
Yu Sekiguchi, Chiaki Sato
Summary: In this study, the cyclic fatigue behavior of a two-part acrylic-based adhesive for structural bonding was investigated using fracture mechanics approach. It was found that fatigue toughness decreased as the fatigue crack growth rate increased, and significant changes in fatigue crack growth characteristics were observed with variations in bond-line thickness and loading conditions. Regardless of initial loading conditions, the adhesive thickness was confirmed to have a predominant effect on fatigue crack growth resistance.
Article
Mechanics
F. Lambiase, V Grossi, A. Paoletti
Summary: The study investigated the influence of joining time during the friction-assisted joining process, finding that high plunging rates provided higher heating rates and energy efficiency. High-speed joining hindered the formation and coalescence of porosities, reduced polymer overflow, and improved the strength of the joints.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Jacob Goodenough, Annabel Fitzgerald, Keith Bean, James Hatcliffe, Andrew Slark, Ian Hamerton, Ian Bond
Summary: Fibre reinforced polymer (FRP) materials have gained significant usage in the wind energy, aerospace, and automotive industries. The complexity of forming FRP-FRP joints has led to an increase in adhesives as a joining method. The introduction of debondable and reversible technologies in structural adhesives has attracted interest to overcome the challenge of separation for repair and recycling purposes.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Chemical
Peer Schrader, Stephan Marzi
Summary: The study aims to investigate the modification of the ODCB test for elevated loading rates and evaluate its applicability at moderate loading rates through experimental research. The experimental results will help address the challenges associated with increased loading rates and provide insight into transitioning to impact testing.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Engineering, Chemical
Ramin Chitsaz Dehaghani, Duane Cronin, John Montesano
Summary: This study focused on the lap shear strength of adhesively bonded non-crimp fabric CFRP composite materials, finding that abrading the surface with sandpaper resulted in the highest lap shear strength. Different stacking sequences also had an impact on the lap shear strength of the joints. Distinct failure processes were observed for CFRP adherends with different stacking sequences, but the final failure event was the fracture of the thin matrix layer in the 0 degrees ply of the adherends.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Mechanics
Haoqi Zhang, Shuai Wang, Ka Zhang, Jiang Wu, Aonan Li, Jie Liu, Dongmin Yang
Summary: This study presents a sequentially coupled optimisation method for 3D printing of continuous carbon fibre reinforced polymer composites, which includes both structural topology optimisation and fibre orientation optimisation. The study demonstrates the potential of manufacturing ultra-lightweight composite structures through 3D printing and the benefits of fibre orientation optimisation in lightweight design of composites with topology optimisation. Experimental results show that 3D printed composites with optimised fibre orientation achieved significantly higher strength and stiffness compared to Markforged (R) printed composites.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Physical
Juncheng Luo, Jianhua Liu, Huanxiong Xia, Xiaohui Ao, Haojie Yin, Lei Guo
Summary: This paper focuses on the effects of different surface treatments on the mechanical performances of aluminum alloy adhesive bonding joints. The results show that hydrophilic surfaces with smaller spacing and larger diameter lead to cohesive failure. Laser ablation with a dimple pattern, as well as fabricating groove or grid patterns and applying phosphoric acid anodizing (PAA) treatment, can greatly improve the bonding strength of the joints.
Article
Engineering, Industrial
F. Brocal, N. Paltrinieri, C. Gonzalez-Gaya, M. A. Sebastian, G. Reniers
Summary: Emerging risk models and frameworks are still developing and uncertainty is a key characteristic in this field. A qualitative approach inspired by meta-learning has been proposed to consider uncertainty in emerging risk management. Through an emerging risk classification scheme, the level of emerging risk and management strategies can be estimated and addressed.
Article
Chemistry, Multidisciplinary
Santiago Yague, Victor Rosales-Prieto, Alberto Sanchez-Lite, Cristina Gonzalez-Gaya
Summary: The cement industry in the European Union faces challenges in reducing CO2 emissions, but using waste as substitutes can create more environmentally friendly and durable green cements.
APPLIED SCIENCES-BASEL
(2021)
Article
Green & Sustainable Science & Technology
Alcinia Zita Sampaio, Augusto Martins Gomes, Alberto Sanchez-Lite, Patricia Zulueta, Cristina Gonzalez-Gaya
Summary: The methodology and technology of building information modeling (BIM) support the development of heritage projects, while historic building information modeling (HBIM) requires a specific and additional view. In HBIM, parametric modeling, technology management, and adequate data archiving are crucial components. This study aims to list the latest features of HBIM and contribute to organizing the dispersed practical and theoretical studies related to HBIM.
Article
Chemistry, Analytical
Manuel Cabaleiro, Carlos Moutinho, Cristina Gonzalez-Gaya, Elsa Caetano, Victor Fco Rosales-Prieto
Summary: This study analyzes the difference in stiffness in a steel laboratory structure using clamped joints or bolted joints, and verifies the methodology used as adequate by conducting laboratory tests on frames made by both types of joints subjected to external dynamic loads.
Article
Green & Sustainable Science & Technology
Fco Javier Garcia-Gomez, Victor Fco Rosales-Prieto, Alberto Sanchez-Lite, Jose Luis Fuentes-Bargues, Cristina Gonzalez-Gaya
Summary: Asset management as a global process adds value to a company through strategic, technological, and resource changes, risk management, and attitude shifts. Companies are increasingly adopting sustainability in all activities, leading to the need for sustainability risk assessment procedures in industrial assets. This paper presents a methodological framework for incorporating sustainability aspects into risk management, based on ISO standards and developed through a three-step process.
Article
Chemistry, Multidisciplinary
Alberto Cotrino, Miguel A. Sebastian, Cristina Gonzalez-Gaya
Summary: Industry 4.0 presents opportunities for SMEs, but the lack of knowledge poses a challenge to their competitiveness and productivity. Government initiatives in Europe are promoting the transition to Industry 4.0 for SMEs, but the risk of knowledge deficiency remains. New ways to enhance knowledge management and transfer are needed to support SMEs in their Industry 4.0 transformation.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Manuel Cabaleiro, Rafael Comesana, Cristina Gonzalez-Gaya, Carlos Caamano
Summary: This study focuses on the fatigue behavior of clamp joints in steel structures, with particular attention to the impact of clamp lever sizes on joint performance. Experimental results indicate that an increase in front lever size leads to a decrease in fatigue limit, while an increase in rear lever size enhances fatigue limit of the joint.
Article
Engineering, Industrial
J. L. Fuentes-Bargues, A. Sanchez-Lite, C. Gonzalez-Gaya, Victor Fco Rosales-Prieto, G. Reniers
Summary: This study examines the evolution of work accidents and the relationship between associated variables in the metal-mechanical sector in Spain from 2009 to 2019. The study finds that while there has been a slight improvement in the accident rate, the sector still faces a high proportion of serious and fatal accidents. Factors such as the Monday effect, meal breaks, and proximity to retirement age have been identified as the most important influences on the number of serious accidents in this sector.
Article
Green & Sustainable Science & Technology
Carlos Manzanares-Canizares, Alberto Sanchez-Lite, Victor F. Rosales-Prieto, Jose Luis Fuentes-Bargues, Cristina Gonzalez-Gaya
Summary: This article introduces a framework for applying the 5S methodology in metal welding workplaces, aiming to improve overall efficiency and quality of the workplace, ensure the correct execution of welding processes, and meet the requirements of welding standards.
Article
Green & Sustainable Science & Technology
Juan Manuel Alvarez-Espada, Jose Luis Fuentes-Bargues, Cristina Gonzalez-Gaya
Summary: This article introduces a method that combines the PMI and NUPI tools to evaluate United Nations peacekeeping operations. Through two case studies, it is found that an adaptive approach has a higher guarantee of success than a predefined approach.
Article
Chemistry, Multidisciplinary
Lorena Perez-Fernandez, Miguel A. Sebastian, Cristina Gonzalez-Gaya
Summary: Manufacturing quality cost optimization is a priority and this study develops an innovative decision support system using multiple methodologies to reduce quality costs. The system addresses the measurement and control of intangible costs, speeds up decision-making process, and can be applicable to any manufacturing sector.
APPLIED SCIENCES-BASEL
(2022)
Review
Green & Sustainable Science & Technology
Manuel Cabaleiro, Borja Conde, Cristina Gonzalez-Gaya, Brais Barros
Summary: In this review paper, the circular economy and its application to steel structures are analyzed. The importance of applying Design for Deconstruction or Design for Disassembly (DfD) from the early stages of the structure's conception is highlighted. Different types of connections for steel structures are reviewed, comparing their research and development level and the degree of reconfiguration they allow. The focus then shifts to clamp-based connections, describing their types, working principles, developed connections, and calculation results. The article aims to promote the widespread use of clamp-based connections in the design and manufacturing of demountable and reconfigurable steel structures. Conclusions are drawn regarding the advantages, disadvantages, and future research directions of this connection system.
Article
Engineering, Civil
Manuel Cabaleiro, Borja Conde, Cristina Gonzalez-Gaya, Brais Barros
Summary: Historic steel structures require preservation and cannot undergo invasive operations. Installing removable auxiliary structures is necessary, especially for difficult-to-access riveted bridges. This study proposes a non-invasive detachable anchorage system for temporary walkways to inspect and maintain historic steel structures without additional scaffolding. The system has been tested in laboratory experiments and real case studies using LiDAR techniques.
Article
Construction & Building Technology
Jose Ignacio Sanchez Colmenarejo, Felipe Morales Camprubi, Cristina Gonzalez-Gaya, Alberto Sanchez-Lite
Summary: This paper presents an original risk analysis method to enhance the safety of power plants during commissioning and start-up operations. It proposes areas for improvement in power plant construction processes and procedures compared to other industries. The proposed methodology has been tested in real industrial facilities and yielded excellent results.
Article
Construction & Building Technology
Alberto Sanchez-Lite, Patricia Zulueta, Alcinia Zita Sampaio, Cristina Gonzalez-Gaya
Summary: This paper assesses an academic implementation of building information modeling (BIM) in a School of Industrial Engineering through evaluating academic outcomes and students' perceptions. The results show that students consider projects related to existing companies and the use of BIM methodology to be valuable for learning and implementing industrial projects.
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)
