Article
Engineering, Mechanical
Alexander Jackstadt, Wilfried V. Liebig, Luise Kaerger
Summary: This paper presents an analytical modeling approach for hybrid laminates, specifically fiber metal laminates with viscoelastic elastomer layers for damping control. The study considers the influence of varying parameters on the damping capabilities of these laminates, using a unified plate formulation and Reissner's Mixed Variational Theorem.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mechanics
J. Koord, J. -l. Stueven, O. Voelkerink, E. Petersen, C. Huehne
Summary: This paper investigates different methods for designing mechanically fastened composite joints, including analytical solutions, experimental testing, and finite element modeling. The results show that the choice of analytical solution is critical for subsequent failure analysis, and certain solutions have high prediction quality at the laminate level. However, some analytical solutions deviate significantly from experimental and numerical data. These observations are further supported by detailed stress analysis at the lamina level.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Ankush P. Sharma, R. Velmurugan, K. Shankar, S. K. Ha
Summary: This article investigates the impact response and damage of titanium-based fiber metal laminates (FMLs) with different metal layer distributions through experimental investigations and analytical modeling. The ballistic performance of FMLs is found to be related to the distribution of metal layers. Experimental and analytical results show good agreement on ballistic limit velocity, with energy absorption mainly due to bending and membrane energy absorption, with FML 4/3-0.3 absorbing a higher percentage of energy.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Thermodynamics
Dardan Klimenta, Dusko Minic, Lana Pantic-Randelovic, Ivana Radonjic-Mitic, Milena Premovic-Zecevic
Summary: The goal of this study is to model steady-state heat transfer of five different photovoltaic laminates using the finite element method. The model is applicable to all existing photovoltaic technologies and includes a new iterative procedure for calculating the maximum operating cell temperature. The thermal model is validated and calibrated using existing data from six independent experiments.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Rui Zhang, Bin Han, Yi Zhou, Lu-Sheng Qiang, Chun-Zheng Zhao, Zhen-Yu Zhao, Qian-Cheng Zhang, Yuan-Yuan Ju, Tian Jian Lu
Summary: This study develops a mechanism-based analytical model of UHMWPE cross-ply laminates, predicting the ballistic performance and residual velocity of armor. The model predictions are validated and show good agreement with existing test data.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Composites
Vishrut Deshpande, Shoab Ahmed Chowdhury, Oliver Myers, Suyi Li
Summary: To design and analyze multi-stable carbon fiber-reinforced composites with asymmetric ply layouts, high-fidelity and computationally efficient analytical models are crucial. However, current models still have limitations such as ignoring interlaminar stresses and lacking calibrated hygroscopic terms. To overcome these limitations, a new analytical modeling approach based on Reissner-Mindlin theory and hygroscopic degradation is proposed. The new model accurately estimates interlaminar stress and predicts the external shape, curvature reduction, and snap-through force of the laminates in different design configurations.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Civil
Yu Gong, Kaixin Xia, Yana Wang, Libin Zhao, Jianyu Zhang, Ning Hu
Summary: This study establishes a semi-analytical model for determining the mode II fracture toughness of multidirectional laminates. The effects of interfacial angles on fracture toughness are investigated and the model has a clear correlation with the interfacial angles, showing good agreement with test results.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
M. C. Serna Moreno, S. Horta Munoz
Summary: The study investigates the strain capacity of symmetric +/- 45 degrees angle-ply laminates of carbon fibre reinforced polymer under uniaxial tensile and compressive loading. The mechanical response shows a three-staged stress-strain behavior with progressive damage during the linear and plateau stages. However, the third stage of strain hardening does not follow the same pattern due to microstructural changes in the matrix. Differences between tension and compression loading cases are observed through the final failure modes.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Mechanics
Bruno Vermes, Stephen W. Tsai, Aniello Riccio, Francesco Di Caprio, Surajit Roy
Summary: By utilizing Tsai's modulus and double-double design for composites, it is possible to simplify the design process in a way similar to metals, achieving lighter, cheaper, and more structurally tailored solutions for specific loading conditions.
COMPOSITE STRUCTURES
(2021)
Article
Computer Science, Interdisciplinary Applications
E. Madenci, A. Barut, N. D. Phan
Summary: This study proposes a bond-based peridynamics model for modeling the linear elastic deformation of a composite laminate. The model considers in-plane and transverse shear deformations and disregards the transverse normal deformation. The equilibrium equation is derived under the assumption of small deformation and solved using implicit techniques. The accuracy of the model is demonstrated by capturing the correct deformation in varying layups and its capability for progressive failure is demonstrated by considering a laminate with a pre-existing crack.
ENGINEERING WITH COMPUTERS
(2023)
Article
Materials Science, Composites
M. J. Mohammad Fikry, Vladimir Vinogradov, Shinji Ogihara
Summary: Experimental observations show that in unidirectional laminates, resin pockets can develop multiple cracks before delamination occurs, with cracks typically forming within the resin pocket rather than at the interfaces with the discontinuous ply. The curved crack paths are governed by the distribution of maximum principle stress, while crack locations are best determined using the principle of maximum energy release rate. This unintuitive cracking behavior is explained by higher residual stresses due to chemical shrinkage of the resin during curing in the confined conditions of the pocket.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Yu Gao, Jian Wang, Xiaowen Song, Huiming Ding, Han Wang, YunBo Bi, Yinglin Ke
Summary: This study explores the compressive failure behavior of ultra-thick laminates and finds that delamination plays a key role in the failure process. The low interlaminar normal strength and wrinkle defects significantly reduce the compressive strength. The Puck criterion provides the most accurate prediction for matrix-dominant failure behavior, while Tsai-Wu 3D has the smallest error for delamination-dominant behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Multidisciplinary
S. Horta Munoz, M. C. Serna Moreno
Summary: The tension-compression biaxial test using +/- 45 degrees symmetric angle-ply laminates is suitable for determining the in-plane pure shear response of a lamina. The stress-strain evolution shows a linear stage followed by an inelastic region with high shear deformations. Digital Image Correlation (DIC) measures a pure and homogeneous shear strain state during the linear stage and records the initiation of a shear band at 45 degrees from the loaded directions. It is concluded that uniaxial tensile tests may provide a better approximation of the shear elastic modulus than uniaxial compressive tests if the material has higher tensile than compressive elastic properties.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Composites
Jiao Lin, Chuanxiang Zheng, Yuchen Dai, Zhenyu Wang
Summary: In the failure analysis of composite materials, the debonding of interface is often overlooked. In this study, a model was established and micro mechanics of failure was applied to analyze fiber metal laminate (FML) under different loading angles. Results showed that directly using the stress on the matrix to calculate interface stress is inaccurate, and the damage trend of interface is consistent with that of fiber. The strain hardening phenomenon of FML decreases with larger loading angle, and the mechanical response is symmetric due to its structure symmetry.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2022)
Article
Engineering, Mechanical
Jianping Lin, Ye Lin, Junying Min, Hao Teng
Summary: The study investigated the performance of hybrid structures from metal and fiber-reinforced polymer (FRP) hybrid laminates under axial compression, showing that steel-FRP hybrid laminates exhibit significantly higher maximum compressive loads and initial stiffnesses in axial compression compared to single steel sheets.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Mechanics
Francesco Focacci, Paolo Foraboschi, Mario De Stefano
COMPOSITE STRUCTURES
(2015)
Article
Construction & Building Technology
Paolo Foraboschi, Alessia Vanin
CONSTRUCTION AND BUILDING MATERIALS
(2015)
Article
Engineering, Mechanical
Paolo Foraboschi
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2015)
Article
Construction & Building Technology
Paolo Foraboschi, Mattia Mercanzin, Dario Trabucco
ENERGY AND BUILDINGS
(2014)
Article
Engineering, Mechanical
Paolo Foraboschi, Alessia Vanin
ENGINEERING FAILURE ANALYSIS
(2014)
Article
Engineering, Mechanical
Paolo Foraboschi
ENGINEERING FAILURE ANALYSIS
(2014)
Article
Mechanics
Paolo Foraboschi
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2014)
Article
Materials Science, Multidisciplinary
Paolo Foraboschi
MATERIALS & DESIGN
(2014)
Article
Construction & Building Technology
Paolo Foraboschi
INTERNATIONAL JOURNAL OF STEEL STRUCTURES
(2020)
Article
Chemistry, Physical
Paolo Foraboschi
Article
Chemistry, Physical
Paolo Foraboschi
Summary: This paper discusses the changing of load distribution from distributed to concentrated in reinforced concrete beams and presents a design method to enhance the shear capacity of the beam. The method involves the application of fiber composites bonded to the beam's stirrups at a 45-degree angle. The paper also provides an analytical model to predict the concentrated load-carrying capacity of the strengthened beam.
Article
Engineering, Mechanical
Paolo Foraboschi
Summary: This paper focuses on reinforced concrete beams that may experience accidental falls of heavy masses. It provides an analytical formulation to predict the combinations that trigger the collapse of a RC beam and discusses the two possible failure modes and their sensitivity to various parameters.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Chemistry, Physical
Paolo Foraboschi
Summary: This paper focuses on a fastening system consisting of multiple anchors embedded in concrete to transmit transverse forces. It provides an analytical model for predicting the maximum shear strength of an anchor group and presents comparisons with experimental results and code provisions.
Article
Engineering, Civil
Paolo Foraboschi
Summary: This paper investigates the behavior of a straight bar anchor inserted into a drilled hole in a masonry structure. The anchor is installed orthogonally to the masonry surface and can be bonded with the masonry through either adhesive or mechanical anchors. The paper presents experimental campaigns, an analytical model, case studies, and a comprehensive discussion to determine the optimal technical solutions for shear anchors in masonry.
ENGINEERING STRUCTURES
(2023)
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)