Review
Materials Science, Composites
M. K. Gupta, Manickam Ramesh, Sabu Thomas
Summary: In the past two decades, researchers have been studying hybrid composite materials reinforced with synthetic and natural fibers to overcome the limitations of natural fibers such as moisture absorption and compatibility. Various studies have been conducted on the properties of hybrid composites, including mechanical and thermal properties, water absorption, and morphological characteristics.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Composites
Faris M. AL-Oqla, Mohammed T. Hayajneh, Amal Aldhirat
Summary: This study investigated the performance of Mediterranean lignocellulosic fiber-reinforced polypropylene composites using various Jordanian lignocellulosic fibers. Results showed significant effects of different fibers on the mechanical performance characteristics of the composites, particularly enhancing stiffness property. Additionally, coefficient of friction was found to vary with fiber loading and type.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Laura Aliotta, Alessandro Vannozzi, Patrizia Cinelli, Maria-Beatrice Coltelli, Andrea Lazzeri
Summary: This study investigated the biocomposites based on plasticized poly(lactic acid) (PLA)-poly(butylene succinate-co-adipate) (PBSA) matrix containing wheat bran fiber, a low value by-product of the food industry. The effect of bran addition on mechanical properties was examined, focusing on the fiber-matrix adhesion. Various analytical models based on static and dynamic tests were used to estimate the interfacial shear strength of the biocomposites. The essential work of fracture approach was also employed to evaluate the effect of bran addition on composite fracture toughness.
Review
Green & Sustainable Science & Technology
Saptarshi Maiti, Md Rashedul Islam, Mohammad Abbas Uddin, Shaila Afroj, Stephen J. Eichhorn, Nazmul Karim
Summary: Sustainable fiber reinforced polymer (FRP) composites from renewable and biodegradable materials are of interest due to their potential to reduce environmental impacts, but their performance is still inferior to conventional glass or carbon FRP composites. This review provides an overview of sustainable FRP composites, including manufacturing techniques, sustainability considerations, and potential applications in various industries. The review also discusses future trends, challenges, and the outlook for sustainable natural FRP composites.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Engineering, Manufacturing
Jia Qiu, Yongcun Li, Feng Xu, Xiaofang Hu, Yu Xiao
Summary: Fiber-reinforced composites are lightweight materials with important applications in various fields. Understanding their internal deformation and failure mechanism is crucial in optimizing their microstructure and interfaces. This study used synchrotron X-ray computed tomography and digital volume correlation to investigate the three-dimensional deformation and failure evolution of a representative unit of fiber-reinforced resin composites. The results showed that deformation parameters have a significant impact on crack initiation and propagation.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Composites
Rui He, Longfei Cheng, Yidi Gao, Hao Cui, Yulong Li
Summary: This paper investigates the effect of in-plane shear stress on the fiber kinking compressive fracture toughness of laminates using compact compression specimens with off-axis fibers. The results show that in-plane shear stress increases the values of the R-curves, leading to an increase in energy dissipation. Microscopic morphology reveals the increasing splitting of fiber bundles and subsequent fiber compression failure as the off-axis angle of the fibers increases.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Ferran Serra-Parareda, Marc Delgado-Aguilar, Francesc X. Espinach, Pere Mutje, Sami Boufi, Quim Tarres
Summary: The growing environmental consciousness of society has led to the development of sustainable products. This study explores the feasibility of using a mixed PLA-PTA matrix to achieve high properties while maintaining lower stiffness. The addition of PTA reduces the tensile strength, Young's modulus and strain of the material, but the mechanical performance can be improved by reinforcing the blend with BKHF. The study concludes that the reinforced biocomposites are a viable alternative to replace non-renewable materials with similar properties and a significant reduction in carbon footprint.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Manufacturing
Karthik Ram Ramakrishnan, Stephane Corn, Nicolas Le Moigne, Patrick Ienny, Pierre Slangen
Summary: This study investigates the impact behavior of flax fabrics-epoxy and commingled flax-polypropylene composite plates, using low velocity impact tests and high-speed imaging coupled with DIC analysis. A crack-tracking algorithm is implemented to identify crack initiation and propagation, while force-displacement histories and high-speed camera results are compared to identify different modes of damage and critical energy for complete penetration. This method can effectively depict the events leading to the breakage of biocomposites and be a valuable tool for investigating the impact behavior of other materials.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Review
Materials Science, Composites
Barshan Dev, Ashikur Rahman, Rubel Alam, Reazuddin Repon, Yasir Nawab
Summary: The exploration of natural fiber-reinforced polymer composites (NFRPCs) in cutting-edge applications has become popular due to their lightweight, low-cost, and environmental aspects. Natural fibers (NFs) can effectively compete with synthetic fibers in terms of mechanical, thermal, and acoustic properties. The invention and innovation of NF composites for commercial purposes have significantly increased in recent years to meet the growing demand of the industrial sectors. This review article provides a comprehensive overview of NFRPCs, discussing advancements in preparation techniques, improvements in mechanical properties, and future research directions in the field.
POLYMER COMPOSITES
(2023)
Review
Polymer Science
Elizabeth R. Lozada, Carlos M. M. Gutierrez Aguilar, Jaime A. A. Jaramillo Carvalho, Juan C. C. Sanchez, Giovanni Barrera Torres
Summary: In the last decade, natural fibers have greatly improved the properties of innovative composites made with natural rubber, surpassing their synthetic fiber counterparts. This has led to research on modified natural rubber composites reinforced with vegetable fibers. This paper reviews the literature on the properties of natural vegetable fibers and natural rubber used in composites, emphasizing the need for alternative materials to reduce the carbon footprint and negative environmental impact.
Article
Materials Science, Composites
Tej Singh, Brijesh Gangil, Lalit Ranakoti, Amit Joshi
Summary: Hybrid epoxy composites reinforced with hemp-sisal natural fibers and varying proportions of silica nanoparticles were evaluated for physical, mechanical, and sliding wear properties. The composites containing 2 wt% silica nanoparticles exhibited the highest tensile strength, impact strength, and hardness. The silica nanoparticles significantly contributed to the wear performance, with the optimal combination including 2 wt% of silica nanoparticles, 10 N normal load, 1.5 m/s sliding speed, and 500 m sliding distance resulting in higher wear resistance.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Composites
S. Gurupranes, I Rajendran, Shanmuga N. Sundaram
Summary: The global trend of environmental protection has led to the replacement of synthetic fibers with natural fibers, and the study found that alkali-treated Ziziphus nummularia fibers have higher strength in epoxy composites.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Tommaso Magrini, Ayca Senol, Robert Style, Florian Bouville, Andre R. Studart
Summary: Lightweight composites have revolutionized the aviation industry and will continue to play a major role in energy-efficient transportation systems. Inspired by the hierarchical architecture of mollusk shells, we have created tough composites by combining soft polymer layers with alternating nacre-like layers. Our research provides new insights into the interplay of multiscale toughening mechanisms in hierarchical bioinspired architectures and offers guidelines for designing and manufacturing strong and tough lightweight composites.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Chemistry, Physical
Simon Moser, Yanxia Feng, Oncay Yasa, Stefanie Heyden, Michael Kessler, Esther Amstad, Eric R. Dufresne, Robert K. Katzschmann, Robert W. Style
Summary: Inspired by the cellular design of plant tissue, this study presents a method for making versatile, tough, highly water-swelling composites. By embedding highly swelling hydrogel particles inside tough, water-permeable, elastomeric matrices, the resulting composites inherit the properties of both hydrogels and elastomers. These hydroelastomers are easy to fabricate, based on widely-available materials, and can be molded or extruded into complex swelling geometries, making them excellent candidates for soft robotics and swelling-based actuation.
Article
Engineering, Multidisciplinary
Zhongbin Tang, Chunyang Chen, Aijia Li, Yong Deng, Chao Zhang, Yulong Li
Summary: This study investigates the tensile failure behaviors of PEEK, short carbon, and glass-fiber-reinforced PEEK composites at different temperatures and strain rates. Quasi-static and dynamic tensile tests are conducted, and the fracture morphology is characterized by scanning electron microscopy. The results show that the tensile strength is highly influenced by temperature and strain rate. The failure strain of the composites is less sensitive to strain rate at -30 degrees C and 100 degrees C. Additionally, the energy absorptivity of PEEK composites decreases at extreme temperatures.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Rodinei Lopes Junior, Mauro Missao Watanabe Junior, Victor Barbosa De Souza, Joao Reis, Heraldo S. Da Costa Mattos
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2020)
Article
Engineering, Mechanical
J. M. L. Reis, S. A. Martins, H. S. da Costa Mattos
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
R. G. Castro, F. C. Amorim, J. M. L. Reis
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2020)
Article
Engineering, Chemical
J. M. L. Reis, F. C. Amorim, J. F. B. Souza, T. Sant'Anna, H. S. da Costa Mattos
Summary: Diesel is an important fuel due to the longevity and cleanliness of diesel engines. Understanding compatibility of polymers with diesel is crucial, especially with materials like polyoxymethylene (POM) used in automotive components. This study conducted tensile tests on plain and glass fiber reinforced POM after immersion in diesel at different temperatures and times, developing a mathematical model that showed good agreement with experimental results.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Engineering, Mechanical
C. R. de Luca, J. F. Sathler, Y. H. Quintana, J. M. L. Reis, H. S. da Costa Mattos
Summary: This paper analyzes the thermal aging process of polyamide 66 at two different temperatures over 9000 hours and proposes a unified expression to estimate its mechanical behavior in tensile tests. The study shows that with a minimum of three tests at different aging stages, a reasonable approximation of the stress-strain curve for a wide range of times can be obtained.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Mechanics
Julia Figueiredo Sathler, Camila Ranucci de Luca, Joao Marciano Laredo dos Reis, Heraldo Silva da Costa Mattos
Summary: Composite repair systems for metallic pipelines with through-wall defects must be qualified according to ISO 24817 or ASME PCC-2 standards through multiple hydrostatic tests to determine failure pressure. The study suggests that a simpler method, such as shaft-loaded and pressurized blister tests, can be used as an alternative to hydrostatic tests to experimentally obtain critical fracture energy values. Results show reasonable similarity between critical energy values obtained from pressurized and shaft-loaded blister tests compared to standard hydrostatic tests.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
H. S. da Costa Mattos, J. M. L. Reis, F. C. Amorim, J. F. S. Brandao, L. D. M. Lana, V. A. Perrut
Summary: The study verifies the long-term performance of a composite repair system through high-pressure hydrostatic tests and finds that environmental temperature changes may cause pressure oscillation inside the specimen. The model predictions align well with experimental results, assisting in controlling static pressure and obtaining valuable information about the long-term performance of the composite repair system.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Chemical
M. J. Oliveira, F. F. Enne, J. M. L. Reis, H. S. da Costa Mattos
Summary: The study found that different surface preparation methods for pipelines have a significant impact on the repair performance of bonded metallic patches. While using a rotating bristle machine produces the best results in terms of roughness and strength, other alternative methods are less time-consuming and easier to use in the field.
JOURNAL OF ADHESION
(2022)
Article
Engineering, Mechanical
Silvia D. Vidal, Felipe do Carmo Amorim, Joao Fellipe Brandao de Souza, Joao M. L. Reis
Summary: In recent years, there has been a growing importance in finding and developing non-petroleum materials that are more compatible with the natural environment. This study investigates the mechanical properties of a composite material with an epoxy matrix reinforced with natural Curaua fibers. By immersing the fibers in different concentrations of NaOH solution and varying treatment times, the interaction between the matrix and fiber was improved. The results showed that the treated fibers exhibited an increase in maximum tensile and flexural strength compared to untreated fibers, with improvements of up to 30% and 10% respectively.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
F. F. Enne, M. J. Oliveira, J. M. L. Reis, Heraldo S. da Costa Mattos
Summary: This paper focuses on the repair of through-wall corrosion damage in metallic pipes using bonded metallic patches. It is found that the thickness of the patch plays a significant role in the effectiveness of the repair. The study shows that a bonded metallic patch alone can prevent leaking without the need for a composite sleeve.
JOURNAL OF ADHESION
(2023)
Article
Mechanics
J. M. L. Reis, A. R. Costa, H. S. da Costa Mattos
Summary: This study investigates the repair of corrosion damage in metallic pipes using GFRP patches and finds that the effectiveness of the repair is strongly dependent on the thickness and surface roughness of the patches.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
J. M. L. Reis, E. M. Menezes, H. S. da Costa Mattos, R. J. C. Carbas, E. A. Marques, L. F. M. Silva
Summary: The application of adhesively bonded joints in the petroleum industry has increased due to the advantages of light weight structures, fast repairing systems, and low temperature applications. This study investigates the mechanical behavior of dissimilar materials joints used as repair systems for metallic pipelines. Experimental analyses show a correlation between the critical energy release rates obtained in dissimilar joint tests and hydrostatic tests on repaired pipelines. An approximate theoretical framework is proposed to estimate critical fracture parameters using simpler and less expensive tests.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Chemical
Hiasmim Rohem Gualberto, Joao Marciano Laredo Dos Reis, Monica Calixto de Andrade, Hector Reynaldo Meneses Costa, Felipe do Carmo Amorim
Summary: Metal structures can be repaired with composites using adhesives. However, exposure to ultraviolet radiation can degrade the polymeric materials in the adhesive, leading to a decline in shear strength and a reduction in the adhesive's glass transition temperature (Tg). The degradation of the adhesive's polymeric chains is associated with the reduction in Tg and shear strength of the joint. Therefore, the application of such materials in UV-exposed areas should consider their poorer performance regarding degradation.
JOURNAL OF ADHESION
(2023)
Article
Mechanics
Camila R. De Luca, Joao M. L. Reis, Guilherme P. Mota, Heraldo S. Da Costa Mattos
Summary: This paper investigates the possibility of adding silica as a low-cost thixotropic thickener to a commercial epoxy resin to facilitate the application of a primer adhesive layer for repairing through-thickness corrosion damage in metal pipes, while maintaining the strength and effectiveness of the repair after curing.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Hiasmim Rohem Gualberto, Joao Marciano Laredo dos Reis, Monica Calixto de Andrade, Hector Reynaldo Meneses Costa, Felipe do Carmo Amorim, Julian David Hunt
Summary: In this study, the degradation of Glass Fiber Reinforced Polymer (GFRP) under UV radiation was investigated. Tensile tests showed a significant reduction in GFRP strength after just one month of UV exposure, while flexural testing demonstrated an initial improvement in strength followed by a gradual decrease. Characterizations indicated material degradation, including photo-oxidation, yellowing, and microcracks on the surface.
APPLIED COMPOSITE MATERIALS
(2023)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
