Article
Mechanics
Mingyang Shao, Guangming Zhou, Mudan Chen, Dandan Xing, Fangtian Hu, Ning Kuang, Deng'an Cai
Summary: This paper investigates the effect of adding standing up loops on the interlayer properties of 2D plain fabrics and verifies the toughening mechanism through experiments and finite element analysis. The experimental results show that the interlaminar fracture toughness of the double-sided-loop 2D woven laminated composites is significantly increased compared with the general 2D woven laminated composites.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Yu Gong, Libin Zhao, Jianyu Zhang, Ning Hu, Chuanzeng Zhang
Summary: This paper examines the effects of complex failure mechanisms on the flexural modulus of multidirectional laminates and proposes an improved data reduction method to accurately characterize fracture toughness and develop standard test procedures for mixed-mode delamination.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Yang Zhao, Menglin Zhao, Anyang Wang, Zhengping Chang, Zhongqi Wang, Ke Zhang
Summary: Despite decades of development, delamination damage in multidirectional laminates remains a significant issue in industrial field. This study introduces a triepoxy into an existing epoxy system to synthesize a self-healable vitrimer, which improves its mechanical properties and Tg, providing significant guidelines for engineering applications.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
Weigang Shi, Chao Zhang, Bo Wang, Mei Li, Chengyu Zhang
Summary: The wedge-loaded double cantilever beam (W-DCB) method was used in this study to evaluate the mode I interlaminar fracture toughness of two-dimensional (2D) continuous fiber-reinforced ceramic matrix composites (CMCs). A W-DCB model was established based on the elastic foundation theory, taking into account the axial force effect, shear effect, asymmetric propagation, and incomplete interlaminar contact. The friction effect was analyzed and measured using the theory of error transfer and a quasi-in-situ measurement method. The results demonstrate the accuracy of the W-DCB formula in conjunction with the experimental data, as verified by compliance curves, crack tip behaviors, and the cohesive zone of 2D CMCs. Furthermore, the calculated energy release rate (ERR) using the W-DCB theory was consistent with the measured data.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Mechanics
Yu Gong, Dingli Tian, Tiancheng Cao, Libin Zhao, Jianyu Zhang, Ning Hu, Chuanzeng Zhang
Summary: In this study, a novel delamination growth criterion considering the significant R-curve effects was proposed for mixed-mode I/II delamination predictions. Its adequacy and accuracy were validated by experimental data for two different composite materials. The proposed criterion is easy to use with only two experimentally obtained parameters.
COMPOSITE STRUCTURES
(2022)
Article
Polymer Science
Mohamad Alsaadi, Ahmet Erklig
Summary: The incorporation of sewage sludge ash (SSA) waste particles in glass fabric-reinforced epoxy composites improved the interlaminar fracture toughness of mode I and reduced the impact of UV aging on the composite properties.
IRANIAN POLYMER JOURNAL
(2021)
Article
Engineering, Mechanical
Tahir Soyuguzel, Zahit Mecitoglu, Huelya Kaftelen-Odabasi
Summary: An experimental and computational study was conducted to investigate the toughening effect of nitrogen-doped reduced graphene-oxide particles (ND-RGOP) in delamination of carbon fiber/epoxy laminates. The results showed that the addition of ND-RGOP significantly enhanced the delamination toughness in both mode I and mode II. FESEM images confirmed the rough delamination path and increased interlaminar fracture toughness due to the presence of ND-RGOP. The simulations also supported the toughening effect of ND-RGOP.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Materials Science, Composites
Zhilong Dang, Junchao Cao, Alfonso Pagani, Chao Zhang
Summary: This study evaluates the mode-I interlaminar fracture property of 3D-printed continuous fiber reinforced composites with different interlaminar interfaces. Results show that the interlaminar failure of carbon fiber is seriously affected by void defects caused by 3D printing. Furthermore, it is found that the interlaminar fracture toughness can be greatly improved by using Kevlar fiber due to better interlayer bonding and denser bridging fiber. A novel idea for the hybrid interface is proposed based on the characterization study of carbon-Kevlar composites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Min Li, Zhe Che, Shaokai Wang, Yubo Zhou, Hao Fu, Yizhuo Gu, Wei Zhang
Summary: By implanting fine z-pins on the in-plane fibers, the interlaminar fracture toughness of carbon fiber reinforced polymer (CFRP) composites can be significantly improved, while maintaining high retentions of in-plane mechanical properties. The mechanical properties of the carbon fiber pins play a crucial role in enhancing the composite laminate.
MATERIALS & DESIGN
(2021)
Article
Engineering, Mechanical
Xiaoying Cheng, Jinghua Ying, Zhenyu Wu, Lin Shi, Xudong Hu
Summary: This paper investigates the delamination behavior of two composite structures with carbon nanotubes (CNTs) using the double cantilever beam (DCB) samples. The result shows that the CNT layer effectively improves the fracture toughness of unidirectional (UD) sample interfaces and only works on initial fracture toughness for plain woven (PW) samples with low CNTs areal density. Additionally, more AE events are recorded in the CNT modified samples and the agglomeration with high content CNTs weakens the interlayer strength in PW samples, whereas the fracture toughness is significantly enhanced in UD composites due to the increase of the crack propagation path.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
Mahdy Ahangar, Milad Saeedifar
Summary: This study investigates the effect of dielectric-barrier discharge (DBD) plasma treatment of glass fibers on the mode II interlaminar fracture toughness of glass/epoxy composite laminates. The results show that the plasma treatment significantly improves the toughness of the specimens, but does not increase the chemical bonding strength between the fibers and resin. Scanning electron microscopy reveals that the plasma treatment enhances the adhesion of the fibers to epoxy.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Engineering, Aerospace
Fan Zhang, Xin Liu, Yaoyao Ye, Qisen Chen, Qiang Xu, Yunbo Bi
Summary: Automated Fiber Placement (AFP) technology is efficient and accurate, making it suitable for manufacturing composite structures with complex geometry. However, the imperfections caused by this automated method pose challenges to the stability of the composite's mechanical properties. This study experimentally investigates the influence of AFP-induced gaps and overlaps on interlaminar fracture in oven-cured laminates. The findings show that the fracture toughness of the laminates is slightly reduced in the presence of gaps, but significantly increased in the presence of overlaps. Fractographic studies reveal that the increased fracture area and crack length improve the fracture toughness in the overlap group, while the resin-rich area induced by gaps negatively affects delamination resistance.
CHINESE JOURNAL OF AERONAUTICS
(2023)
Article
Engineering, Mechanical
Sahand P. Shamchi, Marcelo F. S. F. de Moura, Zhongjie Zhao, Xiaosu Yi, Pedro M. G. P. Moreira
Summary: The study found that the critical strain energy release rate of the modified laminates increased by nearly 79% compared to the reference samples under quasi-static loading conditions. In terms of the influence of loading rate on mode II interlaminar fracture toughness values, non-modified carbon/epoxy laminates showed a marginal increase, while the interleaved ones showed no significant effect.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Chemistry, Physical
Christophe Floreani, Colin Robert, Parvez Alam, Peter Davies, Conchur M. O. Bradaigh
Summary: This study investigates the interlaminar fracture toughness, in-plane mechanical properties, and mixed-mode critical strain energy release rate of powder epoxy composites. The results show that the toughness of this material is significantly higher than that of other epoxy composites, making it suitable for manufacturing structures where there is a risk of delamination.
Article
Engineering, Civil
Luohuan Zou, Yu Gong, Dingli Tian, Libin Zhao, Jianyu Zhang, Ning Hu
Summary: Delamination behavior in multidirectional laminates is affected by interface angle, and investigating the effect of interface angle on delamination behavior is crucial for practical engineering. This study analyzes the effects of interface angle on the R-curve, bridging stress, and failure mechanism through experiments and numerical simulations.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Composites
Nisrin Abdelal, Steven L. Donaldson
JOURNAL OF COMPOSITE MATERIALS
(2018)
Article
Polymer Science
Nisrin R. Abdelal, Mohammed H. Al-Saleh, Mohammad R. Irshidat
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
(2018)
Article
Materials Science, Ceramics
Nisrin R. Abdelal, Mohannad T. Aljarrah
CERAMICS INTERNATIONAL
(2018)
Article
Materials Science, Composites
Nisrin R. Abdelal, Steven L. Donaldson
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2018)
Article
Materials Science, Textiles
Nisrin Abdelal
JOURNAL OF INDUSTRIAL TEXTILES
(2020)
Article
Materials Science, Composites
Nisrin R. Abdelal, Steven L. Donaldson
POLYMER COMPOSITES
(2019)
Article
Thermodynamics
Suhil Kiwan, Hamzeh Alwan, Nisrin Abdelal
APPLIED THERMAL ENGINEERING
(2020)
Article
Polymer Science
Rabie A. Abu Saleem, Nisrin Abdelal, Ahmad Alsabbagh, Maram Al-Jarrah, Fatima Al-Jawarneh
Summary: The study investigates the shielding properties of epoxy/carbon fiber composites and epoxy/glass fiber composites with lead nanoparticle additives through computational analysis. The empirical correlations show that the mass attenuation coefficient increases with the weight fraction of lead nanoparticles, but the enhancement becomes negligible beyond a certain threshold. Statistical analysis confirms the accuracy of the developed correlations in capturing the behavior of the simulation data.
Article
Materials Science, Composites
Nisrin Abdelal, Rabie Abu Saleem, Ahmad Alsabbagh, Maram Al-Jarrah, Fatima Al-Jawarneh
Summary: This study investigates the effects of two parameters, namely, exposure to gamma radiation and incorporation of lead nanoparticles, on the mechanical properties of carbon fiber-epoxy composites. The results show that an appropriate weight percentage of lead nanoparticles can improve the tensile strength and Young's modulus of the composites, while excessive lead content leads to degradation of these properties. In terms of gamma radiation exposure, low doses improve the tensile strength, modulus of toughness, and ductility, but high doses have a negative impact on these properties with little effect on ductility.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Nisrin Abdelal, Nihad Dib, Daniel Young, Andrew Slanker
Summary: This study investigated EMI shielding and dielectric properties of epoxy-based nanocomposites incorporating graphene nanoplatelets with varying surface areas. It was found that increasing GNP surface area and concentration improved complex permittivity, AC conductivity, and EMI shielding performance, with reflection as the dominant shielding mechanism.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Composites
Rabie Abu Saleem, Nisrin Abdelal, Ahmad Alsabbagh, Maram Al-Jarrah, Fatima Al-Jawarneh
Summary: This study investigates the shielding characteristics of carbon fiber/epoxy composites incorporating lead nanoparticles, and the results show that adding lead nanoparticles can improve the shielding properties of the composite material.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Proceedings Paper
Automation & Control Systems
Nisrin R. Abdelal
2020 7TH INTERNATIONAL CONFERENCE ON MECHANICS AND MECHATRONICS RESEARCH (ICMMR 2020)
(2020)
Article
Engineering, Civil
Nisrin R. Abdelal, Mohammad R. Irshidat
STRUCTURAL ENGINEERING AND MECHANICS
(2019)
Article
Engineering, Chemical
Nisrin Abdelal, Yazan Taamneh
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)
