Article
Construction & Building Technology
Alper Ozmen, Erkut Sayin
Summary: In order to prevent earthquake damage to historical masonry structures, accurate information on their material properties is important for reliable computational modelling and strengthening intervention programs. This study compared destructive and non-destructive techniques used to evaluate the original and restoration stones of Tas,horan Church in Malatya, Turkey, presenting the test results.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Materials Science, Characterization & Testing
Jianguo Zhu, Zhuangzhuang Mao, Dongliang Wu, Jiangfan Zhou, Dacheng Jiao, Wenxiong Shi, Wenying Zhu, Zhanwei Liu
Summary: This paper reviews the main active infrared thermography NDT techniques and presents the development of the active infrared thermography DNT technique in TBCs. By comparing the sensitivity, advantages, and disadvantages of these techniques in TBC NDT, it provides a significant reference for researchers to choose an appropriate method. The paper also discusses the fabrication techniques of artificial defects for calibration and the future trends in NDT for the TBC system based on the active infrared thermography NDT technique.
JOURNAL OF NONDESTRUCTIVE EVALUATION
(2022)
Article
Engineering, Multidisciplinary
Gaetan Poelman, Saeid Hedayatrasa, Wim Van Paepegem, Mathias Kersemans
Summary: This paper introduces an improved infrared thermography method for detecting defects in woven fabric composites. The k-space filtering technique is applied to automatically decompose the thermographic image into a structured thermal background image related to the weave pattern, and a residual image representing other features (such as defects). The proposed method demonstrates enhanced performance in defect detection and sizing.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Sandra Pozzer, Francisco Dalla Rosa, Zacarias Martin Chamberlain Pravia, Ehsan Rezazadeh Azar, Xavier Maldague
Summary: This study used numerical simulations to determine the favorable periods for IRT inspections, particularly for concrete structural health monitoring. The results showed that spring and summer are the most suitable periods for IRT inspections.
APPLIED SCIENCES-BASEL
(2021)
Article
Mechanics
Anju Rani, Ravibabu Mulaveesala
Summary: This paper presents a novel method for characterizing defects in glass fibre reinforced polymer samples using infrared thermography. The method is fast, non-contact, and quantitative, and has been validated through simulated and experimental studies. The results demonstrate the superior defect detectability of the proposed method compared to other techniques.
COMPOSITE STRUCTURES
(2022)
Article
Thermodynamics
Jesse Williams, Francesco Corvaro, Joseph Vignola, Diego Turo, Barbara Marchetti, Matteo Vitali
Summary: In the most common method of fresco painting, a unique integration of paint and plaster allows for frescos to acquire great durability and permanence. Non-destructive techniques, such as thermography, can be used to prevent serious damage to frescos caused by delamination of plaster layers. This method was successfully implemented on frescos within the Senate Reception Room of the United States Capitol Building.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Materials Science, Characterization & Testing
Amirreza Ardebili, Mohammad Hossein Alaei
Summary: This study investigates the functional role of step-heating thermography in the detection of delamination defects in multi-layer GFRP composite patches. The results show that all defects in both 4 and 8 layer laminates can be identified, with higher dimensional accuracy in 8 layer patches.
NDT & E INTERNATIONAL
(2022)
Article
Materials Science, Composites
Qing-Qing Ni, Jun Hong, Ping Xu, Zhenzhen Xu, Kirill Khvostunkov, Hong Xia
Summary: This study proposed a new nondestructive testing method EMW-NDT using electromagnetic wave technique, showing good detection sensitivity to damages such as delamination size and thickness in CFRP composites. With huge potential, this contactless method could be widely used in the field of damage detection for CFRP composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
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
Materials Science, Characterization & Testing
Zhen Huang, Jianguo Zhu, Lijun Zhuo, Chaoyi Li, Changhu Liu, Wenfeng Hao, Weihua Xie
Summary: This study establishes a method for fast and large-area measurement of coating thickness using active long pulse thermography. The method utilizes the 1D heat transfer equation to analyze the temperature decay curve and compute the time at the minimum of its 2nd derivative to quantitatively evaluate coating thickness. Experimental results demonstrate the accuracy of the proposed method for measuring the thickness of uneven coatings.
NDT & E INTERNATIONAL
(2022)
Article
Engineering, Multidisciplinary
Miguel A. Machado, Kim -Niklas Antin, Luis S. Rosado, Pedro Vilaca, Telmo G. Santos
Summary: The anisotropic bulk conductivity of carbon fibre reinforced polymers poses a challenge for eddy current testing (ECT), making it difficult to detect damage in the transverse direction. A customized eddy current probe was developed based on numerical simulation to detect delamination damage in carbon fibre reinforced polymer composite. The probe configuration, with two in-line coils operating at 1 MHz frequency, was found to effectively detect real delamination damage in a high-quality CFRP component.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Instruments & Instrumentation
Geetika Dua, Ravibabu Mulaveesala, Priyanka Mishra, Jasleen Kaur
Summary: This paper focuses on a highly depth resolved Frequency Modulated Thermal Wave Imaging (FMTWI) and its digitized version named as Digitized Frequency Modulated Thermal Wave Imaging (DFMTWI) for identifying subsurface Teflon patches in GFRP test specimens to simulate delaminations at various layers.
INFRARED PHYSICS & TECHNOLOGY
(2021)
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
Construction & Building Technology
Quang Tai Ta, Van Ha Mac, Jungwon Huh, Hong Jae Yim, Quang Huy Tran
Summary: Active infrared thermography (IRT) is effective for detecting and characterizing subsurface defects in concrete structures. The present study investigates the detectability of delaminations in painted concrete (PCo) compared to normal concrete (NCo) structures using square pulse thermography (SPT), a common approach for active IRT. The results show that delaminations in PCo structures are more detectable in infrared images than in NCo structures, and the width-to-depth ratio of a defect in PCo structures affects the detectability during SPT inspections.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Shuvo Dip Datta, Md. Habibur Rahman Sobuz, Abu Sayed Mohammad Akid, Shoaib Islam
Summary: This paper presents an experimental investigation of the properties of recycled aggregate concrete (RAC) prepared with varying sizes and replacement levels of coarse aggregate. The results show that RAC achieves lower performance values with the increment of recycled aggregate replacement level. Additionally, concrete with smaller aggregate size exhibits better performance. Empirical relationships between destructive and non-destructive testing techniques are also established to efficiently predict the properties of RAC.
JOURNAL OF BUILDING ENGINEERING
(2022)
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)