Article
Polymer Science
Ajit Babarao Bhagat, Anup K. Ghosh
Summary: This paper correlates the rheological percolation threshold and hardness of Polypropylene/Sisal fibre composites. Power law fit was used to estimate the rheological percolation threshold. The effects of near-critical length fibre and short fibre on the thermomechanical, rheological, and dynamic mechanical properties of the composites were investigated. The results showed that sisal fibre significantly influenced the dynamic mechanical properties of the composites and the near-critical length fibre had properties equivalent to that of short fibre.
Article
Polymer Science
Zhenhua Wang, Weili Feng, Jiachen Ban, Zheng Yang, Xiaomin Fang, Tao Ding, Baoying Liu, Junwei Zhao
Summary: In this study, sisal-fiber-reinforced polypropylene (PP/SF) flame-retardant composites were prepared using the two-step melt blending method. An intumescent flame retardant (IFR) composed of silane-coated ammonium polyphosphate (Si-APP) and pentaerythritol (PER) was used. The PP/SF composite prepared by PP/SF secondary blending with IFR showed excellent flame-retardant performance, with a limited oxygen index of about 28.3% and passing the UL-94 V-0 rating (3.2 mm) in the vertical combustion test. The mechanical properties of the composites prepared using three different mixing processes were similar.
Article
Chemistry, Multidisciplinary
Ummu Raihanah Hashim, Aidah Jumahat, Mohammad Jawaid
Summary: Basalt fibre (BF) is a promising natural reinforcing material for polymer composites, and when modified with nanofillers like graphene nanoplatelets (GNP) and nanosilica (NS), it shows enhanced mechanical properties. The incorporation of hybrid nanofillers contributes to the improvement in the mechanical properties of the composites, especially in terms of modulus and strength. This study demonstrates the potential of BF as an alternative to synthetic glass fibre for mechanical components and structures.
Article
Mechanics
Evangelia Delli, Dimitrios Giliopoulos, Dimitrios N. Bikiaris, Konstantinos Chrissafis
Summary: Polypropylene composites with short glass fibers were fabricated by melt mixing, showing mechanical and thermal properties dependent on fiber size and content; the highest yield strength was observed at 10% fiber content with an average fiber length of 1mm; the use of short fibers improved elongation at break and stiffness, making them suitable for a wide range of applications.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Textiles
Marina Gil Almeida Cioffi, Daniel Magalhaes de Oliveira, Anne Shayene Campos de Bomfim, Kelly Cristina Coelho de Carvalho Benini, Maria Odila Hilario Cioffi, Herman Jacobus Cornelis Voorwald
Summary: The high production of paper has led to an increased focus on paper recycling and its use as a composite filler. This study explores the mechanical and thermal properties of polypropylene composites with different amounts of recycled office waste paper. The results show that the composites maintain comparable properties to pure polypropylene, making them suitable for future applications in various plastic products.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Chemistry, Physical
Maciej Mrowka, Anna Wozniak, Jerzy Nowak, Gabriel Wrobel, Sebastian Slawski
Summary: High-tonnage industrial processes generate huge amounts of waste, and reusing these wastes as fillers in polymer composites can help reduce their environmental impact. However, the introduction of fillers into the polymer matrix may lead to a decrease in mechanical properties of the composite materials, while reducing abrasion.
Article
Materials Science, Composites
Praveenkumara Jagadeesh, Vidya Sagar Honnenahally Ningappa, Madhu Puttegowda, Yashas Gowda Thyavihalli Girijappa, Sanjay Mavinkere Rangappa, Mohammad Rizwan Khan, Imran Khan, Suchart Siengchin
Summary: The study focused on incorporating sisal and kevlar woven fabrics with an epoxy matrix and investigating the impact of Pongamia pinnata shell powder on the sisal/kevlar hybrid composite. Results showed that increasing filler content led to a decrease in void percentage, with the addition of kevlar fabric significantly improving the impact strength, tensile strength, and tensile modulus. The composition of the natural fiber reinforced polymer materials played a crucial role in determining the mechanical properties of the composites.
POLYMER COMPOSITES
(2021)
Article
Chemistry, Physical
Marcin Malek, Waldemar Lasica, Marta Kadela, Janusz Kluczynski, Daniel Dudek
Summary: In line with the principles of sustainable development, concrete production should utilize environmentally friendly, low-emission, and energy-intensive materials and technologies, as well as proper waste management. This study found that using glass waste as a replacement for components in concrete, and adding polypropylene fibers can significantly improve the tensile strength and splitting strength of concrete.
Article
Chemistry, Physical
Sebastian Slawski, Anna Wozniak, Patrycja Bazan, Maciej Mrowka
Summary: This paper presents research on how the introduction of fillers, such as manganese residue and manganese(II) oxide, affects the mechanical and tribological properties of epoxy composites produced by gravity casting. The results show that introducing fillers reduces abrasive wear but decreases the strength of the tested materials.
Article
Polymer Science
Jyoti Agarwal, Smita Mohanty, Sanjay K. Nayak
Summary: Polypropylene (PP)/sisal fibre (SF)/carbon fibre (CF) hybrid composites were prepared using a melt blending process, with varying ratios of CF to SF. The addition of 20 wt% CF, 10 wt% SF, and 5 wt% MgP resulted in significantly improved mechanical performance and impact strength compared to PP/SF composites.
JOURNAL OF POLYMER ENGINEERING
(2021)
Review
Polymer Science
Necar Merah, Farhan Ashraf, Mian M. Shaukat
Summary: This comprehensive review paper examines the research work on epoxy clay nanocomposites. It covers the influence of processing techniques and parameters on the nanocomposite morphology, characterization methods, and the effects of adding nanoclay on the mechanical and physical properties of the composite. The review also discusses the advancements, characterization, and applications of hybrid glass fiber reinforced epoxy-clay nanocomposites, as well as potential health and environmental issues related to nanomaterials and their hybrid composites.
Article
Engineering, Mechanical
Sasmita Kar, Suryakanta Mishra, Sarojrani Pattnaik, Mihir Kumar Sutar
Summary: Environmental awareness has led to the focus on biodegradable natural fiber composites in the industrial and manufacturing sectors. The advantages of natural fibers, such as light weight, low cost, availability, biodegradability, and non-toxicity, have made them more popular than synthetic fibers. This research work combines jute and sisal natural fabrics with synthetic S-glass fabrics in an epoxy matrix using a convenient and economical hand layup process. Nano-marble dust, a waste product from the marble industry, is used as a filler in the hybrid composites. The physical, mechanical, and thermal characteristics of the composite specimens are studied, showing improved tensile and impact strength, as well as a high degradation temperature of 410.4 degrees C for the composite containing nano-marble dust and glass fiber mat.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Materials Science, Composites
Mucahit Kocaman, Hamdullah Cuvalci
Summary: Reinforcing the novolac matrix with glass fiber and graphite can produce high-performance friction composites. The morphology, microstructures, wear properties, and crystal phases of the materials were examined. The results showed that increasing the content of glass fiber and graphite improved the stability and wear resistance of the composites.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Wojciech Zurowski, Jaroslaw Zepchlo, Robert Cep, Lenka Cepova, Miroslaw Rucki, Zbigniew Krzysiak, Jacek Caban, Waldemar Samociuk
Summary: Research focuses on investigating the impact of binders on the properties of polymer composites. Results show that the tribological properties and strength of the composites vary depending on the binder used. The hardness of the Sikafloor matrix is more sensitive to the binder, while the MC-DUR matrix is less affected. No direct correlation is observed between microhardness and specific wear rate. Highest wear rate is obtained in composites fabricated with an emulsion binder and 1% quartz addition, while highest microhardness is achieved in composites with 10% quartz powder and emulsion binder in the Sikafloor matrix.
Article
Materials Science, Composites
Atul Kumar Maurya, Rupam Gogoi, Gaurav Manik
Summary: The study investigates the mechanical, thermal and thermomechanical behavior of hybrid composites post-recycling and the impact of additional reinforcement. The results show that recycling and additional reinforcement have a significant influence on the properties of hybrid composites, and reinforcing with SSL fibers can effectively restore lost properties.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Characterization & Testing
Mustafa Aslan, Ertugrul Gazi Kaymaz
Article
Engineering, Chemical
K. M. John, S. Thirumalai Kumaran, K. Senthil Kumar, S. Suresh Kumar, M. Aslan, U. Alver
INTERNATIONAL POLYMER PROCESSING
(2020)
Article
Engineering, Civil
Volkan Kahya, Sebahat Karaca, Fatih Yesevi Okur, Ahmet Can Altunisik, Mustafa Aslan
Summary: This study identifies and locates open transverse edge cracks in laminated composite beams using vibration measurements. Numerical and experimental data validation shows the effectiveness of the methods for damage localization in composite beams with multiple edge cracks.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF CIVIL ENGINEERING
(2021)
Article
Engineering, Mechanical
Yasar Sert, Tevfik Kucukomeroglu, Ihsan Efeoglu
Summary: In this study, TiAlZrN films were deposited on hardened 1.2344 steels using CFUBMS technique. The coatings were characterized for structure, hardness, adhesion strength, and tribological properties. Results showed that TiAlZrN coatings exhibited high hardness, scratch resistance, and tribological performance, significantly improving the wear resistance of the substrate.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
(2021)
Article
Materials Science, Paper & Wood
Sulafa Holy, Ali Temiz, Gaye Kose Demirel, Mustafa Aslan, Mohd Hazim Mohamad Amini
Summary: This study investigated the use of nano-sized particles for wood preservation and found that impregnation with these particles can improve the physical and thermal properties of wood, as well as provide good water repellency and anti-swelling effects. The results also showed that impregnation with nano-sized particles can effectively protect wood against fungal degradation.
WOOD MATERIAL SCIENCE & ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Yasar Sert, Tevfik Kucukomeroglu, Hojjat Ghahramanzadeh Asl, Ihsan Efeoglu
Summary: The study found that the duplex treatment significantly increased the hardness of the substrate and adhesion strength of the coatings, enhancing the wear performance of the coatings. With an increase in Zr target current, both the coating hardness and adhesion strength exhibited an increasing trend.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Yasar Sert, Tevfik Kucukomeroglu, Hojjat Ghahramanzadeh Asl, Onur Goz
Summary: In this study, CrN, CrAlN, and CrAlTiN coatings were deposited using the cathodic arc evaporation technique and their structural and performance characteristics were investigated. The quaternary coating demonstrated superior hardness and scratch resistance, especially under vacuum conditions.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Engineering, Civil
Volkan Kahya, Fatih Yesevi Okur, Sebahat Karaca, Ahmet Can Altunisik, Mustafa Aslan
Summary: This paper introduces a method for damage identification and localization in laminated composite beams with multiple cracks using automated model updating. The study demonstrates that the proposed method can accurately locate multiple cracks of different severity in the considered cantilever beam, but has limitations in identifying equal severity damages when near the support.
Article
Materials Science, Characterization & Testing
Mustafa Aslan, Kalusuraman Gananiar, Kenan Buyukkaya, Ashkan Ezzatkhah, Umit Alver, Thirumalai Kumaran Sundaresan
Summary: Natural fillers have been widely used for many years in biobased polymer research due to their low cost, eco-friendly nature, and easy availability. Biobased polymer composites have promising future applications in transportation and packaging industries. This study investigated the mechanical and thermal properties, as well as water absorption, of biobased composites fabricated with 40% hazelnut shell flour (HSF) and various inorganics-based additives. The results showed that the inclusion of inorganic powders significantly improved the impact energy of the composites compared to pure polylactic acid (PLA), but led to a decrease in tensile and flexural properties when mica and glass ball powders were added. However, the addition of talc powder resulted in an increase in properties, with the highest flexural strength of 51 MPa achieved with 7.5% talc-filled PLA/HSF composites and the highest tensile strength of 22 MPa observed for both 7.5% and 10% talc. Scanning electron microscopy revealed the uniform distribution of organic and inorganic fillers and microstructural deformation on the fractured composite surfaces.
JOURNAL OF TESTING AND EVALUATION
(2023)
Article
Physics, Applied
Canan Aksoy, Bakiye Cakir, Ezgi Taylan Koparan, Cemaleddin Simsek, Engin Tirasoglu, Susannah Speller, Chris R. M. Grovenor, Tevfik Kucukomeroglu, Ekrem Yanmaz
Summary: Researchers have found that adding materials such as Pb, Nb, AgCu and graphene nano pellets into SnIn (35:65) can enhance its superconducting properties. Even low Pb additions show a dramatic improvement in superconducting properties and could potentially replace commonly used PbBi solder with better results.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Bahri Baris Vatandas, Altug Usun, Nuri Yildiz, Cemaleddin Simsek, Omer Necati Cora, Mustafa Aslan, Recep Gumruk
Summary: Continuous fiber-reinforced thermoplastic (CFRTP) printing using PEEK as a matrix and carbon fiber as support material was investigated to achieve high mechanical properties. A novel production line was used to produce adjustable CFRTP filaments, and an infrared heater was employed to enhance interlaminar bonding of the printed samples. The use of an infrared heater significantly improved the flexural strength of the samples, while excessive fiber volume fraction led to a decrease in flexural strength due to insufficient wetting and porosities. Failure surfaces and cross-sections of the printed parts were examined.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Civil
Ismail Ozen, Hasan Gedikli, Mustafa Aslan
Summary: This paper aims to investigate the energy absorbing and deformation behaviors of composite crash boxes with different geometries. Experimental and numerical studies demonstrate that composite crash boxes filled with cellular structures perform better in terms of energy absorption performance.
ENGINEERING STRUCTURES
(2023)
Article
Metallurgy & Metallurgical Engineering
Semih Mahmut Aktarer, Tevfik Kucukomeroglu
Summary: The study found that the friction stir process improved the formability behavior of dual-phase steel by refining the microstructure and increasing martensite fraction. However, the biaxial formability decreased as the Erichsen index decreased, even though the required punch load increased after FSP. The orange peel effect on the free dome surface was reduced due to grain refinement caused by FSP.
METALLURGICAL RESEARCH & TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Sumran Bilgin, Onur Guler, Umit Alver, Fatih Erdemir, Mustafa Aslan, Aykut Canakci
Summary: The study aimed to investigate the electrochemical corrosion behavior of different coatings on tungsten carbide in various mediums, with TiAlCN coating showing the lowest corrosion rate and AlCrN coating exhibiting the highest corrosion resistance even in acidic environment.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2021)
Article
Engineering, Civil
Ismail Ozen, Kutay Cava, Hasan Gedikli, Umit Alver, Mustafa Aslan
THIN-WALLED STRUCTURES
(2020)
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)
