Review
Chemistry, Multidisciplinary
Yulong She, Jie Tang, Chaoyang Wang, Zhicheng Wang, Zhengren Huang, Yong Yang
Summary: This paper explains the recent advancements in additive manufacturing techniques for fabricating nanocomposite parts and defect non-destructive testing methods. It provides an overview of AM processes for nanocomposites, categorized by feedstock type. The paper also reviews the defects in nanocomposites that can affect the quality of the final product. Additionally, it offers recommendations for the development of NDT methods specifically tailored for nanocomposites.
Article
Chemistry, Analytical
Przemyslaw Sobkiewicz, Pawel Bienkowski, Wojciech Blazejewski
Summary: Microwave imaging and defectoscopy are promising techniques for dielectric composite evaluation, with relatively high penetration depth and low impact on samples and surrounding environment. The research focuses on non-destructive and noninvasive methods for quality evaluation of layered composite materials using an open-ended waveguide probe.
Article
Multidisciplinary Sciences
Majed Almalki
Summary: Non-destructive testing of reinforced concrete structures is crucial in construction and civil engineering. Geophysical methods, such as ultrasonic and radar, have been increasingly used to provide quantitative data for detecting deterioration and guiding quality assurance and remediation.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Review
Engineering, Industrial
Isaac Segovia Ramirez, Fausto Pedro Garcia Marquez, Mayorkinos Papaelias
Summary: Additive manufacturing, a major advancement in the fourth industrial revolution, involves high-precision material deposition using various techniques to build final parts. Efficient inspection methods, such as Nondestructive Testing, are crucial for ensuring quality control and detecting faults in additive manufacturing. The selection and correct use of Nondestructive Testing techniques depend on factors such as application, manufacturing process, material type, and discontinuities. This article provides a comprehensive review and analysis of the state of the art of Nondestructive Testing in additive manufacturing, highlighting relevant works and challenges faced by each technique. It also explores the use of Machine Learning techniques for defect quantification and analysis in Nondestructive Testing.
JOURNAL OF MANUFACTURING SYSTEMS
(2023)
Article
Engineering, Multidisciplinary
Xiang Gao, Ye Tian, Jingpin Jiao, Chenxu Li, Jie Gao
Summary: An improved particle swarm optimization method based on Lamb waves was proposed for the inversion of plate thickness and elastic constants, and accurate parameters were obtained through numerical simulations and validation experiments. The influences of measurement point errors on inversion parameters were explored through orthogonal experiments.
Article
Materials Science, Characterization & Testing
Peng Zhao, Yuhan Jia, Jun Xie, Tingyu Wang, Chenqian Zhang, Jianzhong Fu
Summary: A novel MagLev device using magnet arrays is proposed to replace the whole permanent magnet, providing a promising method for levitation of large-scale samples. The simulation results can obtain the equation between density and levitation height, showcasing the potential for accurate measurement of various polymer densities.
Review
Materials Science, Multidisciplinary
Maria Ines Silva, Evgenii Malitckii, Telmo G. Santos, Pedro Vilaca
Summary: The reliability of inspecting small-scale defects, with dimensions below 100 μm, is crucial for ensuring the structural safety of critical components in high-value applications. Early detection and repair of these defects contribute to the circular economy and sustainability by extending the life and reusability of components. Various non-destructive testing techniques, such as computed tomography, scanning thermal microscopy, and machine learning, paired with advanced signal processing algorithms, provide high accuracy and resolution for detecting and characterizing small-scale defects.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Mechanics
Pawel Hlosta, Marcin Nita, Dorota Powala, Waldemar Swiderski
Summary: Terahertz (THz) technology has attracted more interest in recent years due to its unique properties for non-destructive evaluation (NDE). Materials like dielectrics are transparent to THz waves, while conducting materials like metals are opaque. The potential application of THz radiation in detecting defects in composite pyrotechnic materials is being explored.
COMPOSITE STRUCTURES
(2022)
Review
Materials Science, Ceramics
Zhike Zhao
Summary: The paper discussed the potential defects in ceramic products during the production process and explored the application and development direction of non-destructive testing technology.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Leonardo Xochicale-Santana, Margarita Lopez-Espejel, Victor M. Jimenez-Perez, Jesus Lara-Ceron, Alberto Gomez-Trevino, Noemi Waksman, H. V. Rasika Dias, Blanca M. Munoz-Flores
Summary: Fluorescence bioimaging technologies have become powerful tools to observe abnormalities in cells, but commercial biomarkers have disadvantages that require further research. This study reported the design, synthesis, and characterization of two Schiff bases through eco-friendly synthetic routes, showing good staining effects on cells.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Karol Semrad, Katarina Draganova
Summary: This article discusses the sustainability and environmental friendliness of pipe belt conveyors, and introduces the use of microwires as sensing elements for mechanical load diagnostics. The study finds that the thickness of the glass coating significantly affects the lifetime of the microwires, while the length of the microwires has negligible influence on the number of bending cycles until damage occurs.
Article
Construction & Building Technology
Khoudja Ali-Benyahia, Said Kenai, Mohamed Ghrici, Zoubir-Mehdi Sbartai, Sidi -Mohammed Elachachi
Summary: The estimation of in-situ concrete compressive strength in existing structures is vital for assessing structural capacity. Destructive testing combined with non-destructive testing offers an interesting method for concrete strength assessment. Non-destructive techniques like Rebound Hammer and Ultrasonic Pulse Velocity are widely used to estimate in-situ strength. The new standard version (EN 13791-2019) of assessing in-situ concrete strength shows positive effects on strength assessment, but the statistical procedures for calculating the characteristic strength seem to underestimate the results and be excessively conservative compared to the 2007 version.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Seyed Saman Khedmatgozar Dolati, Nerma Caluk, Armin Mehrabi, Seyed Sasan Khedmatgozar Dolati
Summary: With the increasing population and demand for surface transportation, the importance of maintaining safe and reliable civil infrastructures, especially bridges, has become more critical. Periodic inspections are necessary to prevent failures caused by aging and environmental impacts, with a need for more advanced structural health monitoring methods. This review focuses on non-destructive testing methods applicable to steel bridges, with an emphasis on local damage detection and the application of innovative sensors, drones, and robots for efficient assessments.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Characterization & Testing
Miguel A. Machado, Luis S. Rosado, Telmo G. Santos
Summary: This paper presents a new approach to the design of eddy current testing probes, using high magnetic permeability pattern substrates to shape the distribution of eddy currents. This approach shifts the complexity of coil production to the magnetic substrate, which can be easily manufactured using additive manufacturing technologies.
JOURNAL OF NONDESTRUCTIVE EVALUATION
(2022)
Article
Multidisciplinary Sciences
Vijay Harid, Hoyoung Kim, Ben-Zheng Li, Tim Lei
Summary: Non-invasive stimulation of biological tissue is highly desirable for biomedical applications, such as tumor treatment, endometrial ablation, and neuro-modulation. Microwave methods have recently been used for minimally invasive treatment and can be focused to localized sub-centimeter regions. This study demonstrates the use of a three-dimensional array of microwave antennas to tightly focus signals within the human body.
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)