Article
Materials Science, Composites
Jingjing Liu, Liqing Wang, Yuqing He, Yanmei Zhang, Xiaowei Yuan, WeiGuo Li
Summary: This study investigates the tensile behaviors of carbon fiber reinforced polymer laminates under low temperature and large open-hole conditions. The results show that large open-hole significantly decreases the strength of laminates, while low temperature enhances the strength of laminates with small open holes.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Composites
Ernesto Saenz, Marcos del Rio, Pablo Venegas
Summary: The challenge of incorporating carbon fiber and thermoplastic resin in wind turbine rotor-blades lies in their behavior during lightning events. A comparative study using lightning and dielectric strength tests was conducted, revealing that the behavior of the resins was similar. The integration of earth terminals in carbon fiber laminates was crucial for proper lightning discharge, and the fiber-to-fiber and fiber-to-terminal contact affected the electrical resistance of the laminates.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Muniyan Vijayan, Velappan Selladurai, Gurusamy Balaganesan, Ganesan Suganya Priyadharshini
Summary: In this research, nanosilica was added to fiber metal laminates (FML) to improve their interfacial bonding and mechanical strength. Various tests and analyses were conducted to examine the effects of nanosilica addition on the FML. The results showed significant improvements in strength and thermal stability with the addition of nanosilica.
POLYMER COMPOSITES
(2022)
Article
Engineering, Mechanical
Johannes Reiner, Sergio Orellana Pizarro, Kenny Hadi, Darren Narain, Peng Zhang, Matt Jennings, Mahbube Subhani
Summary: This study investigates the mechanical properties of thin quasi-isotropic [90°-45°-0°-45°] beech veneer laminates. The results show that beech veneer laminates can be tested and analyzed similarly to fiber-reinforced laminates, with consistent values of strength and damage resistance. However, the modulus, tensile strength, open-hole strength, and translaminar fracture energy of beech veneer laminates are one order of magnitude lower compared to fiber-reinforced polymer composites.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Mechanics
Teng Gao, Changhe Li, Yiqi Wang, Xueshu Liu, Qinglong An, Hao Nan Li, Yanbin Zhang, Huajun Cao, Bo Liu, Dazhong Wang, Zafar Said, Sujan Debnath, Muhammad Jamil, Hafiz Muhammad Ali, Shubham Sharma
Summary: This paper presents a systematic scheme for suppressing drilling damage in carbon fiber reinforced polymer (CFRP) materials. The formation mechanism of damage at different hole positions is analyzed, and suppression strategies are reviewed from drilling techniques, conditions, tool design, and multi-techniques integration. The paper also summarizes the methods for damage evaluation and identifies the advantages of various suppression strategies, as well as prospects for future research directions.
COMPOSITE STRUCTURES
(2022)
Review
Materials Science, Multidisciplinary
Rui Guo, Chenggao Li, Yanzhao Niu, Guijun Xian
Summary: This review paper provides the most relevant and up-to-date information on the fatigue of Carbon Fiber Reinforced Polymer (CFRP) composites, including the factors influencing fatigue performance, fatigue damage mechanism, and characterization methods. The research results show that material constituents, service environments, and cyclic loads significantly affect the fatigue performances of CFRP composites. The fatigue damage mechanism of CFRP composites is complex and requires the establishment of theoretical prediction models.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Metallurgy & Metallurgical Engineering
Reza Emrahi, Yasser Rostamiyan
Summary: Carbon fiber-reinforced polymer (CFRP) composites are widely used due to their exceptional mechanical properties, but they can be damaged during extreme machining processes. The mechanical properties of open-hole CFRP laminates, which are prone to drilling tool-induced holes, are important to be addressed. In this research, the tensile, flexural, and compressive strengths of an open-hole CFRP laminate are determined experimentally and numerically validated using finite element method.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Materials Science, Multidisciplinary
Hanyu Zhang, Ping Zhu, Zhao Liu, Shijie Qi, Yingdan Zhu
Summary: Carbon fiber reinforced polymer (CFRP) is widely used in machinery and construction due to its extraordinary mechanical properties. The drilling-induced delamination is considered as the most undesirable damage and challenging failure mode. This paper proposes a method to predict the mechanical properties of open-hole laminated plain woven CFRP composites more accurately by comparing experimental and simulation results, simplifying delamination regions, and constructing a mechanical property evaluation model.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
J. Qiu, M. K. Idris, G. Grau, G. W. Melenka
Summary: This paper presents a machine vision-based strain and damage visualization technique using smart electroluminescent integration for carbon fiber reinforced polymer (CFRP) material inspection. The technique allows for real-time visualization of deformation and cracks in CFRP lamina during progressive axial loading, providing a portable and low-cost alternative to traditional non-destructive testing methods.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
Joseph O'Gara, Michael D. Sangid
Summary: The use of composites in aircraft structures requires a slow growth criteria and an appropriate similitude parameter to assess their life. This study examines the interconnected damage growth mechanisms in different layups and explores the efficacy of proposed similitude parameters in capturing slow crack growth. The results demonstrate the need to analyze similitude parameters across various sample geometries and stress states to understand composite material fatigue performance in aerospace applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
M. Erfan Kazemi, Victor Medeau, Lorenzo Mencattelli, Emile Greenhalgh, Paul Robinson, James Finlayson, Silvestre T. Pinho
Summary: We introduce novel zone-based hybrid laminate concepts to enhance the high-velocity impact (HVI) response of baseline carbon fibre-reinforced polymer (CFRP) composites. By keeping approximately 80% of the baseline CFRP mass in the hybrid concepts, similar areal weights and substantial in-plane mechanical properties are maintained. Three zones are identified along the laminate thickness, and tailored materials are incorporated to improve the HVI response. Various materials, including carbon (thin- and thick-plies), glass, Zylon, ultra-high molecular weight polyethylene (UHMWPE), shape memory alloy/carbon fabric, and ceramic, alumina, and titanium sheets, are studied. All laminate concepts have comparable areal weights for meaningful comparison. Experimental results demonstrate up to 95% improvement in energy dissipation compared to the baseline quasi-isotropic (QI) CFRP configuration.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hang Cheng, Zhiqiang Zhang, Mingwen Ren, Hongjie Jia
Summary: This paper investigates the bending springback behavior of metal/CFRP laminates and determines the optimal curing conditions through experiments and numerical simulations. The results show that the fiber lay-up and metal layer thickness have significant effects on bending springback, while forming speed has a minor influence.
Article
Construction & Building Technology
Pitcha Jongvivatsakul, Chanachai Thongchom, Amaras Mathuros, Tosporn Prasertsri, Musa Adamu, Shanya Orasutthikul, Akhrawat Lenwari, Tawatchai Charainpanitkul
Summary: This study investigates the use of carbon nanotubes (CNTs) as additives to enhance the bonding strength between concrete and carbon fiber reinforced polymer (CFRP). By adding different types and weight percentages of CNTs to epoxy, single-shear tests were conducted to analyze the bonding behavior. The results show that a certain proportion of CNTs modified epoxy can improve the bonding strength and interfacial fracture energy.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Mechanics
Ehsan Etemadi, Minglonghai Zhang, Keda Li, Mohammad Bashtani, Danish Tahir, Mabel Mei Po Ho, Hong Hu
Summary: This paper presents a study on 3D novel hybrid auxetic structures made with carbon fiber reinforced polymer (CFRP) laminate composite. The mechanical characteristics of the designed structures, such as Young's modulus, shear modulus, and Poisson's ratio, are evaluated through theoretical analysis and finite element simulation. The results show that the structures have negative Poisson's ratio values in all ranges of design geometry parameters. The optimized geometry parameters are achieved through a multi-objective optimization method based on maximizing stiffness and minimizing relative density responses. Additionally, the mechanical behaviors of the assembled 3D structures are studied through quasi-static compressive tests to measure the negative Poisson's ratio values using strain gauges and a video extensometer. The proposed structures exhibit superior stiffness and high elongation percentage, making them a strong candidate for the next generation of load-bearing auxetic structures.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Qihua Ma, Shun Wang, Qi Zhou, Xuehui Gan
Summary: This paper carried out lightweight design of oil pan using carbon fiber reinforced plastic material, considering the influence of manufacturing process and proposing an integrated design method. By adjusting the geometric characteristics of the oil pan and determining feasible process schemes, a lightweight oil pan meeting working conditions and objectives was successfully manufactured.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Heriberto Granados-Becerra, Victor H. Lopez-Morelos, Alberto Ruiz, Rafael Garcia-Hernandez, Francisco F. Curiel-Lopez, Martin R. Barajas-Alvarez
Summary: The Ramberg-Osgood equation was used to model the stress-strain behavior of Inconel 600 specimens, showing a correlation between the hardening coefficient n and the metallurgical condition of the specimen, with a notable increase in n for samples heat-treated beyond 25 hours.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Composites
Carlos Rubio-Gonzalez, Maximiliano Hernandez-Santos, Eduardo Jose-Trujillo, Julio Alejandro Rodriguez-Gonzalez
Summary: This study investigates the impact behavior of glass fiber/epoxy composite laminates after seawater aging. The results show that the impact properties of wet specimens are significantly lower than dry specimens, with a reduction of approximately 40% in peak force and a 250% increase in damage area.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Materials Science, Composites
Julio Alejandro Rodriguez-Gonzalez, Carlos Rubio-Gonzalez
Summary: The weight concentration of graphene nanoplatelets (GNPs) significantly affects the electrical, mechanical, thermal-mechanical, and piezoresistive properties of glass fiber/epoxy composite laminates. While the addition of GNPs improves electrical conductivity and strain sensing capabilities, it also decreases interlaminar shear strength and flexural strength. However, the flexural modulus remains relatively unchanged, and a slight increase in glass transition temperature is observed in samples with 1.00 wt% GNPs.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Vania Rodriguez-Herrejon, Alberto Ruiz
Summary: The effects of 475°C embrittlement on the tensile response of two different duplex stainless steel alloys, namely 2507 SDSS and 2101 LDX, aged for different times, were investigated in this study. The results showed that the strain hardening rate of 2507 SDSS was higher than that of 2101 LDX. Microstructure analysis also revealed the different characteristics of the two alloys during the holding process.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Composites
Carlos Rubio-Gonzalez, Eduardo Jose-Trujillo, Julio Alejandro Rodriguez-Gonzalez, Jaime Espinoza-Hernandez, Jose Alfredo Manzo-Preciado
Summary: A novel marine composite structure incorporating multiwall carbon nanotubes (MWCNTs) was developed for self-sensing strain in a tidal turbine blade. The MWCNTs were deposited onto glass fiber fabric using a spray-coating technique, forming an electrical percolation network on the blade's surface. Finite element analysis predicted a suitable structural blade design, which was confirmed by measured strains and electromechanical tests.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Materials Science, Composites
Eduardo Jose-Trujillo, Carlos Rubio-Gonzalez, Julio Alejandro Rodriguez-Gonzalez
Summary: This study experimentally investigates the influence of seawater aging on the flexural and thermomechanical properties of glass fiber/epoxy composites. The results show that seawater aging significantly reduces the mechanical and thermomechanical properties of the composite laminates. However, hybrid MWCNT/GNP-GF/E composites exhibit better resistance to seawater aging, making them suitable for marine applications.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Julio A. Rodriguez-Gonzalez, Victoria Renteria-Rodriguez, Carlos Rubio-Gonzalez, Edgar A. Franco-Urquiza
Summary: Spray coating and vacuum-assisted resin infusion processes were used to develop multifunctional biocomposite laminates with bio-based epoxy resin and graphene-coated sisal fibers. The addition of graphene nanoplatelets (GNPs) improved the flexural properties of the biocomposites and significantly enhanced the electrical conductivity and glass transition temperature. The biocomposites with 8 wt.% GNPs exhibited excellent piezoresistive behavior and demonstrated cyclic reproducibility of the piezoresistive response after 10 cycles.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Metallurgy & Metallurgical Engineering
Vania M. Rodriguez, Victor Hugo Lopez-Morelos, Venkata Karthik Nadimpalli, Bue David Pedersen, Alberto Ruiz, Marcel A. J. Somers
Summary: In this study, 440C martensitic stainless steel was manufactured through spray forming technology, and the microstructural and mechanical properties were evaluated after different heat treatments. It was found that austenitizing temperature affects the deformation and fracture behavior of the steel, with higher temperatures leading to an improvement in tensile properties and a decrease in strain hardening rate. The Q-IQ-T heat treatment was effective in improving toughness and ductility without compromising strength. These results suggest that the mechanical response of the SF-440C MSS can be tailored by adjusting the heat treatment parameters for better industrial design.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Engineering, Multidisciplinary
Carlos Rubio-Gonzalez, Maria del Pilar de Urquijo-Ventura, Julio A. Rodriguez-Gonzalez
Summary: In this study, the combination of acoustic emission (AE) and self-sensing capability provided by carbon nanotube (CNT) networks was used for monitoring damage progression in glass fiber epoxy composites under flexural loading. Different stacking sequences of specimens were prepared using the vacuum assisted resin infusion procedure. Analysis of the recorded acoustic signals identified various damage mechanisms, and electromechanical response and AE parameters captured specific failure events during the composites' damage evolution. Scanning electron microscopy revealed less damage severity in specimens with CNT due to reinforcement effect. This study demonstrates the complementarity of non-destructive inspection techniques and self-sensing capability for monitoring damage progression in composite structures.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Characterization & Testing
Brian Fuchs, Jin-Yeon Kim, Vania M. Rodriguez, Alberto Ruiz, Laurence J. Jacobs
Summary: 9Cr-1Mo tempered martensite stainless steels are highly desirable for their corrosion resistance and creep strength. This research explores the contributions to nonlinearity beta by dislocation reduction and grain boundary precipitate M23C6 growth in a 9Cr-1Mo steel. The predictions of grain boundary M23C6 coarsening and dislocation density reduction are validated through experimental measurement.
JOURNAL OF NONDESTRUCTIVE EVALUATION
(2023)
Article
Materials Science, Multidisciplinary
Martin Ricardo Barajas-Alvarez, Arnoldo Bedolla Jacuinde, Victor H. Lopez-Morelos, Alberto Ruiz
Summary: The influence of solution heat treatment (1200 degrees C) on carbide morphology and creep tensile properties of a vacuum cast Co-Cr-W-Ni base superalloy with and without B and Zr additions has been investigated. Experimental evidence shows that the addition of B and Zr, as well as the solution treatment, affects the carbide morphology and distribution. After solution treating the alloy without additions, a finer carbide distribution along the interdendritic arms was observed. Conversely, the additions of B and Zr impact the carbide morphology and distribution, precipitating within the dendrites and at interdendritic regions. As a result, the creep life and creep deformation of the sample with additions are 12.5 and 2.7 times higher compared to the sample without additions, respectively.
Article
Materials Science, Composites
Eduardo Jose-Trujillo, Carlos Rubio-Gonzalez, Julio Alejandro Rodriguez-Gonzalez
Summary: The study evaluates the effect of low-velocity impact loading and seawater aging on the residual bending properties of GFRPs. The self-sensing capability of the composite laminates provided by a hybrid combination of MWCNTs and GNPs is also examined. The results show a significant reduction in mechanical properties due to seawater aging, but the presence of CNSs in the composite laminates has a positive synergistic effect on the impact resistance. Furthermore, the self-sensing capability of GFRPs with CNSs is preserved even after impact loading and seawater aging, making it suitable for structural health monitoring of marine components.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Optics
Vania M. Rodriguez, Carlos Rubio Gonzalez, Santiago Flores Garcia, Hector Carreon Garciduenas, Victor H. Lopez Morelos, Alberto Ruiz
Summary: Laser Shock Peening (LSP) is a surface treatment method that improves the fatigue life and strength of components by inducing compressive stress and plastic deformation. This study investigates the effects of LSP on the fatigue crack growth (FCG) and fracture toughness (FT) of Inconel 718 (IN718) samples aged for different durations. The experimental results show that LSP reduces the impact of thermal aging on FCG and increases the FT of aged IN718 samples.
OPTICS AND LASER TECHNOLOGY
(2023)