Article
Materials Science, Composites
He Wang, Cuiping Bai, Qu Yan, Hougai Shi, Hualin Fan
Summary: This article investigates a new structure called curved woven lattice truss sandwich (CWLTS) panels and reveals the effects of curving and foam-filling on their deformation, damage, failure, and energy absorption through experiments. The study findings show that foam filling can effectively enhance the load-bearing capacity and energy absorption properties of CWLTS.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Sabbah Ataya, Mohamed M. El-Sayed Seleman, Fahamsyah H. Latief, Mohamed M. Z. Ahmed, Khalil Hajlaoui, Yousef G. Y. Elshaghoul, Mohamed I. A. Habba
Summary: In this study, an AZ91/23 vol.% short carbon fiber composite was produced using a squeeze casting technique. The composite exhibited improved hardness, compressive strength, and wear properties compared to the AZ91 matrix. The performance of the composite was influenced by fiber orientation. The parallel composite specimen showed the highest compressive properties but the lowest ductility among the tested specimens.
Article
Materials Science, Composites
Mallampati Somaiah Chowdary, Gujjala Raghavendra, M. S. R. Niranjan Kumar, Shakuntala Ojha, Manne Anupama Ammulu, P. Phani Prasanthi
Summary: Hybrid composites with Kevlar/K, Sisal/S, and Polyester reinforcement, enhanced with varying percentages of Nano clay, demonstrated excellent mechanical properties and erosion wear resistance, particularly suitable for engineering materials in the aviation and automobile industry.
POLYMER COMPOSITES
(2022)
Article
Construction & Building Technology
Bing Liu, Xuanyu Zhang, Junpeng Ye, Xiaoyan Liu, Zhiheng Deng
Summary: This study investigated the effect of microfibers and macrofibers on the mechanical properties of coral concrete. The results showed that both types of fibers can improve the mechanical properties, with microfibers mainly affecting the stage before macrocracks formation and macrofibers mainly exerting positive effects after macrocracks appeared. The hybrid addition of microfibers and macrofibers further enhanced the mechanical properties.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Polymer Science
Siew Sand Chee, Mohammad Jawaid, Othman Y. Alothman, Hassan Fouad
Summary: The study investigates the mechanical and dynamic mechanical properties of hybrid natural fiber composites filled with nanoclay, with a focus on the effects of OMMT on enhancing the strength and storage modulus of the composites. The addition of OMMT results in improved mechanical properties and reduced voids and fiber pull-out in the composites.
Article
Materials Science, Ceramics
Yuan Sun, Hang Xie, Linjing Liu, Qiangwei Kou, Shantao Zhang, Bin Yang, Wenwu Cao, Yunfei Chang
Summary: By integrating crystallographic texture and second-phase toughening strategies, the fracture resistance and mechanical reliability of alumina multilayer composites have been effectively improved. The addition of ZrO2 significantly enhances the mechanical performance of the composites and reduces sensitivity to flaw size. The enhanced mechanical properties are mainly attributed to higher compressive stresses, more crack bifurcations, and longer crack deflection paths within the textured layers.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Moritz Neuser, Fabian Kappe, Jakob Ostermeier, Jan Tobias Krueger, Mathias Bobbert, Gerson Meschut, Mirko Schaper, Olexandr Grydin
Summary: AlSi casting alloys are widely used in the automotive industry, but their brittle nature can lead to cracks during mechanical joining. By increasing the solidification rate and using TRC process, ductility can be improved to prevent crack initiation during joint formation. Additionally, the load-bearing capacity of the joint can be significantly increased due to the extremely fine microstructure.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Polymer Science
Chulmin Youn, Hyeon Jung Gwak, Younghwan Bae, Dokun Kim, Byeong Jin Yeang, Song Jun Doh, Sang Young Yeo
Summary: This study investigated the effect of thermal drawing process on the mechanical properties of PEI filaments. The results showed that optimizing the draw ratio, process temperature, and cooling temperature can lead to PEI filaments with excellent mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Correction
Materials Science, Multidisciplinary
Saeed Pashmforoosh, Sadegh Shahriyari, Omid Mirzaee
Summary: The affiliation of the third author was published incorrectly in the original article and has now been corrected.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Lei Yuan, Zhenli Liu, Chen Tian, Zhengguo Yan, Jingkun Yu, Xinghui Hou, Qiang Zhu
Summary: The novel aqueous gel-casting process successfully developed Al2O3-bonded porous fibrous YSZ ceramics with high performance and lightweight characteristics. Increasing the number of YSZ fibers led to denser network structure and more stable performance of the ceramics, although thermal conductivity and compressive strength decreased as a result.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Seong-Gun Bae, Sanghun Kim, Ju-A Lee, Yeong-Geun Jeong, Dong-Geun Shin
Summary: Silicon carbide fiber is an important structural material that is widely used for ceramic matrix composites. The study focused on strengthening the fiber's flexibility by etching surface cracks and forming an oxidation layer.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Mert Coskun, Kerem Can Dizdar, Gurkan Tarakci, Gokhan Ozer, Derya Dispinar
Summary: Energy savings and sustainability are critical for economic development, and recycling of aluminum has been a long-studied area. In recent years, additive manufacturing (AM) of aluminum has gained popularity due to its advantages such as flexible geometry and no design limits. This study compared the properties of recycled AM aluminum with both AM and cast alloy, and conducted statistical analysis to characterize the changes. The results showed that the yield strength decreased in recycled AM, while the ultimate tensile strength values were similar to the cast alloy. The average elongation at fracture for recycled AM was higher than the cast alloy, but the reliability and reproducibility were lower compared to the cast alloy.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Composites
Mikhail V. Burkov, Alexander V. Eremin
Summary: This study investigated the effects of adding milled carbon fibers and single-wall carbon nanotubes on the mechanical and physical properties of carbon-fiber-reinforced polymers. It was found that single-wall carbon nanotubes significantly improved static strength and fatigue performance, while milled carbon fibers enhanced properties under static loading but negatively impacted fatigue properties.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Ceramics
Gang Lu, Yisi Chen, Qingsong Yan, Hongxing Zhan, Pu Mao, Dong Liu
Summary: Short carbon fiber (C-sf ) reinforced silica-based ceramic cores were prepared by injection molding and sintered in air and N2 atmospheres. The samples sintered in N-2 showed in-situ formed silicon carbides and increased cristobalite peaks in XRD patterns with higher flexural strength. The composite coating on the C-sf and enhanced interfacial bonding strength contribute to the improved mechanical properties of the ceramic cores.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Review
Engineering, Manufacturing
Suman Chhetri, Habiba Bougherara
Summary: The review summarized the current state of research on surface modification of UHMWPE fiber and UHMWPE/polymer interfacial properties. Various surface modifications of UHMWPE fiber classified as 'wet' chemical and 'dry' techniques have been detailed with relevant examples. In addition, the relationship between fiber/matrix adhesion and mechanical properties of the composites has been explored. Lastly, the potential and challenges of each modification method have been discussed.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Green & Sustainable Science & Technology
Seok-Joon Jang, Ji-Hyeon Kim, Sun-Woo Kim, Wan-Shin Park, Hyun-Do Yun
Article
Chemistry, Multidisciplinary
Seung-Ho Choi, Jin-Ha Hwang, Sun-Jin Han, Hyo-Eun Joo, Hyun-Do Yun, Kang Su Kim
APPLIED SCIENCES-BASEL
(2020)
Article
Green & Sustainable Science & Technology
Soo-Yeon Seo, Jeong-Hun Park, Hyun-Do Yun, Kang-Su Kim
Article
Green & Sustainable Science & Technology
Hyun-Do Yun, Hye-Ran Kim, Won-Chang Choi
Article
Green & Sustainable Science & Technology
Hyun-Do Yun, Sun-Woong Kim, Wan-Shin Park, Sun-Woo Kim
Article
Chemistry, Multidisciplinary
Gun-Cheol Lee, Youngmin Kim, Soo-Yeon Seo, Hyun-Do Yun, Seongwon Hong
Summary: This study found that cement mortar incorporating carbon nanotubes exhibited enhanced durability and electrical properties under deterioration induced by sulfate attack, as the CNTs provided strong resistance to acid corrosion.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Dong-Hui Kim, Wan-Shin Park, Sun-Woo Kim, Moon-Sung Lee, Soo-Yeon Seo, Hyun-Do Yun
Summary: This research developed a cement-based strain-detecting sensor for structural health monitoring of civil infrastructures, and investigated the effects of embedded steel reinforcing bars and micro steel fibers on the properties of synthetic PE fiber reinforced cement composites. The study found that the addition of steel fibers improved the tensile strength and electrical behavior of the composite materials, and optimal linear regressions were achieved for samples containing 1.0% steel fibers in terms of changes in resistivity and tensile strain.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Soo-Yeon Seo, Jeong-Hun Park, Hyun-Do Yun, Kang-Su Kim, Gun-Cheol Lee, Seongwon Hong
Summary: This study examines the use of OF sensors to monitor the reinforcing effect of FRP in concrete structural members, specifically determining that a total adhesion length of 40 mm or more is sufficient for strain transfer in FRP. Experiment and analytical studies were conducted to validate the findings.
Article
Chemistry, Physical
Gun-Cheol Lee, Youngmin Kim, Soo-Yeon Seo, Hyun-Do Yun, Seongwon Hong
Summary: This study investigated the influence of carbon nanotubes (CNTs) on carbonation conductive cementitious composites, finding that carbonation only caused chemical damage without affecting the electrical resistance value of the conductive cement mortar after undergoing carbonation attack.
Article
Chemistry, Physical
Hyun-Do Yun, Gwon-Young Jeong, Won-Chang Choi
Summary: Steel fiber has been successfully used in controlling volumetric changes in concrete mixtures, but its application has been limited to nonstructural construction. Recent studies have attempted to expand its use to replace rebar for shear reinforcement, showing promising results. However, there is limited research on the feasibility of using steel fiber in structural components. This experimental study investigates the shear performance of steel fiber-reinforced concrete beams using the tensile strength of steel fiber and the shear span-to-depth ratio as variables. Results indicate that the tensile strength of steel fiber significantly affects the shear strength of the beams, regardless of the shear span-to-depth ratio, and suggests that steel fiber can play a role in shear reinforcement of concrete beams.
Article
Chemistry, Physical
Hyun-Do Yun, Ki-Bong Choi, Won-Chang Choi
Summary: This study comparatively evaluates two test standards, EN-14651 and ASTM C1609, used to evaluate the flexural performance of steel-fiber reinforced concrete beams. The results show that both standards yield similar results, but unintended failure modes were observed.
Article
Chemistry, Physical
Hyun-Do Yun, Wan-Shin Park, Young-Il Jang, Sun-Woo Kim
Summary: This study investigates the influence of fly ash and recycled sand on the flexural behavior of SFRCC-filled steel tubes. The addition of micro steel fiber reduces the elastic modulus, while the replacement of fly ash and recycled sand decreases the elastic modulus and increases the Poisson's ratio. The incorporation of micro steel fibers enhances the strength and results in a smooth descending curve after initial cracking. The flexural tests on the FRCC-filled steel tubes show similar peak loads and high applicability of the equation proposed by AISC. The deformation capacity of the SFRCC-filled steel tubes is slightly improved, but the denting depth increases due to the low elastic modulus.
Article
Polymer Science
Hyun-Do Yun, Sun-Hee Kim, Wonchang Choi
Summary: This experimental study investigates the mechanical characteristics of CFRP bars, including their tensile, compressive, and shear strength, as well as modulus of elasticity. Understanding these properties is crucial for analyzing the behavior of concrete structures reinforced with CFRP rebars. The use of a coefficient allows for the prediction of tensile strength based on shear strength. The results confirm that CFRP's tensile strength is influenced by its diameter due to the shear lag effect.
Article
Construction & Building Technology
Youngmin Kim, Soo-Yeon Seo, Hyun-Do Yun, Gun-Cheol Lee, Seongwon Hong
Summary: This study examined the mechanical and electrical properties of repair self-sensing composites. The dispersion of carbon nanotubes in the repair mortar was improved by impregnating porous powder with liquid MWCNT, drying, and pulverizing it. Different dosages of S-CNT (3%, 6%, and 9% by weight) were used to fabricate repair self-sensing cement composites, and their mechanical and electrical performances were tested. The results showed that there was little difference in strength between the different composites, and the composite with 9% S-CNT had even higher strength than the plain specimen. The dispersion of S-CNT improved drying shrinkage and porosity, and the S-CNT mixed specimen exhibited self-sensing performance when subjected to bending loads.
Article
Instruments & Instrumentation
Hoseong Jeong, Byung Jun Jung, Jae Hyun Kim, Soo-Yeon Seo, Hyun-do Yun, Kang Su Kim
Summary: The construction industry contributes significantly to global warming, with 5% of CO2 emissions resulting from cement manufacturing. To combat global warming, efforts are needed to prolong infrastructure lifespan through structural health monitoring and timely repair. Carbonation is often identified as a major cause of concrete deterioration, and current methods for measuring carbonation, such as destructive testing, are time-consuming and expensive. This study aimed to develop a pH sensor that can monitor the final stage of carbonation efficiently. The sensor, manufactured by functionalizing nylon with formaldehyde and chloroacetyl chloride and covalently bonding it with aniline blue, displayed a significant color change in the pH range of 5 to 10, showed sufficient response within 30 minutes, and demonstrated stability even in high pH environments like concrete.
SMART MATERIALS AND 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)
