Article
Construction & Building Technology
Wenping Du, Caiqian Yang, Hans De Backer, Chen Li, Kai Ming, Honglei Zhang, Yong Pan
Summary: The dynamic mechanical properties of recycled concrete (RC) and natural concrete (NC) were studied using impact tests and numerical simulation. The results showed that the quasi-static compressive strengths of the RC were slightly lower than that of the NC, but the increase in compressive strength under dynamic conditions was similar for both. An empirical equation was proposed to estimate the dynamic increase factor (DIF) of the RC.
Article
Chemistry, Physical
Eusoo Choi, Ha-Vinh Ho, Junwon Seo
Summary: This study investigated the impact behavior of SMA fiber-reinforced mortar through a compressive impact test using the split Hopkinson pressure bar method. The results showed that the appearance of SMA fibers, recovery stress, and composite capacity can increase strain rate. The addition of SMA fibers and recovery stress slightly increased specific energy absorption of the reinforced specimens.
Article
Engineering, Mechanical
K. Senthil, Ankush Thakur, A. P. Singh, M. A. Iqbal, N. K. Gupta
Summary: This article investigates the dynamic response of clay brick masonry walls under repeated impact load through experimental and numerical study. The results show that the interface of the walls plays an important role in resisting impact load, and the aspect ratio and mortar strength significantly affect the failure pattern and resistance of the walls. Numerical simulations using ABAQUS are in good agreement with the experimental results, and sensitive parameters that affect the numerical results are identified. Additionally, the use of externally bonded engineered cementitious composite (ECC) layers improves the response of masonry walls.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Engineering, Civil
Jianxun Zhang, Long Yuan, Jiangtao Zhang, Jun Yan, Hui Yuan
Summary: The dynamic response of a fully clamped foam-filled X-type sandwich beam under low-velocity impact is studied analytically and numerically. The analytical model based on the yield criterion is developed to predict the impact response. Numerical calculations are carried out and show good agreement with analytical results. The effects of various parameters on the impact resistance of the foam-filled X-type sandwich beam are discussed.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Chang Ye, Pan Zhang, Daihui Mo, Xiaoyang Lu, Fei Yan, Xinxin Ge, Peng Jiang, Yuansheng Cheng
Summary: This paper presents an experimental investigation into the dynamic response and microstructure evolution of titanium alloy plates subjected to low-velocity impact load. The effects of impact energy on the impact response curves and the interested impact resistance were analyzed. The microstructure evolution induced by the variation of impact energy was further elaborated. The impact behaviors of titanium alloy specimens were compared with the ones of CFRP specimens.
THIN-WALLED STRUCTURES
(2022)
Article
Green & Sustainable Science & Technology
Lanh Si Ho, Trong-Phuoc Huynh
Summary: The recycling and reusing of solid wastes as construction materials has gained attention from research scholars. This study investigates the long-term mechanical and durable characteristics of concrete produced with recycled waste medical glass aggregate as a replacement for natural crushed sand. Results show that the mechanical properties and durability of the concrete mixtures improved with increasing levels of glass aggregate replacement, with the 60% replacement mixture exhibiting the highest performance. Scanning electron microscope results confirmed these findings.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Multidisciplinary
Pinyong Zeng, Wei Li
Summary: The mechanical behaviors of CL65 wheel rim material were studied under different temperatures and strain rates. The stress-strain curves were found to be dependent on strain rate and temperature. The ductility of the material increased with the distance from the tread, while the strength decreased. High temperature promoted the fragmentation and dissolution of cementite layers, leading to weaker strain rate sensitivity and stronger temperature sensitivity.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Mechanical
Alena Zemanova, Petr Hala, Petr Konrad, Tomas Janda, Radim Hluzek
Summary: This study investigates how the interlayer properties of laminated glass plates affect their response to low-velocity impact, using a combination of experiments and numerical simulations. The results validate the numerical model's accuracy in predicting impact velocities and contact forces, as well as the viscoelastic parameters of polymer interlayers. Additionally, the study explores how different interlayer polymer materials influence the impact response of laminated glass in varying conditions.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Construction & Building Technology
Qinglong Qin, Qingshan Meng, Qinghai Mei, Kai Wu, Chi Wang, Jiwang Zhang
Summary: In this study, the dynamic response characteristics of coral reef sand concrete (CRSC), CRSC with polypropylene fibers (PFs), and CRSC with basalt fibers (BFs) under impact loading were compared using macroscopic and microscopic testing techniques. The results showed that the dynamic compressive strength and dynamic increase factor (DIF) of CRSC increased with increasing strain rate. PFs and BFs improved the dynamic compressive strength at medium and low strain rates. The damage modes of the different types of concrete were fragmentation damage for CRSC and CRSC with BFs, and core retention damage for CRSC with PFs.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Physical
Mahfuz Bin Rahman, Lvtao Zhu
Summary: This study experimentally investigates the low-velocity impact response of three-dimensional integrated woven spacer sandwich composites. The results show that the stiffness and energy absorption capacity are significantly affected by the core pile's heights and impact energies. The face sheet thickness does not have a significant influence on the impact response. Different damage and failure mechanisms were observed under different impact energies.
Article
Mechanics
Yuezhao Pang, Xiaojun Yan, Jia Qu, Linzhi Wu
Summary: This study prepared two types of foam/fiber sandwich structures using the Vacuum Assisted Resin Transfer Molding (VARTM) process and conducted low-velocity impact tests to investigate their force response, specific energy absorption, and failure modes under different impact energies, hammer shapes, and impact positions. The results showed that the corrugated sandwich structure exhibited superior low-velocity impact resistance compared to the flat sandwich structure, and performed best when impacted at the corrugated trough position.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Jianxun Zhang, Hui Yuan, Jianfeng Li, Jixing Meng, Wei Huang
Summary: This paper investigates the dynamic response of multilayer curved aluminum honeycomb sandwich beams under low-velocity impact. The deformation process and final failure modes are observed and analyzed. Numerical calculations are performed and show good agreement with experimental results. The effects of core thickness, core-thickness gradient, and gradient of inscribed circle diameters on the load-carrying capacity and energy absorption of multilayer curved aluminum honeycomb sandwich beams are explored. The results suggest that adjusting the core thickness and curvature angle can effectively improve the energy absorption capacity and mitigation ability.
THIN-WALLED STRUCTURES
(2022)
Article
Construction & Building Technology
Thong M. Pham, John Davis, Ngoc San Ha, Emad Pournasiri, Feng Shi, Hong Hao
Summary: The study developed ultra-high-performance rubberized concrete incorporating different rubber contents and steel fibres, finding that the compressive strength decreased with increasing rubber content but remained higher compared to other rubberized concretes. The dynamic compressive strength and energy absorption of the UHPRuC were sensitive to strain rate and increased with rubber content.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
S. Khammassi, M. Tarfaoui, Y. Qureshi, H. Benyahia
Summary: The study investigated the influence of graphene nanoplatelets (GNPs) on the dynamic behavior of epoxy material. Results showed that changing the mass fraction of GNPs significantly affected the mechanical behavior of the epoxy, with an optimal mass fraction of 1 wt % due to good dispersion and viscosity. Increasing the GNPs percentage further led to mechanical strength degradation, attributed to graphene sheets' agglomeration, porosity, and poor interfacial bonding.
MECHANICS OF MATERIALS
(2021)
Article
Mechanics
Chunping Xiang, Jiao Wang, Shangjun Chen, Guoxi Fan
Summary: In this paper, a yield criterion considering the effect of core strength was proposed for sandwich pipe (SP) materials, and the dynamic response of a fully clamped slender SP under transverse impact was theoretically predicted by considering the interaction of stretching and bending of the structure. The theoretical predictions were verified through the establishment of finite element models, and good agreements were achieved between the theoretical predictions and the numerical results. It is demonstrated that the large deflection of SPs is dominated by the axial force. This study can provide the basic understandings of the structural behaviours of SPs for their safety in submarine applications threated by transverse impact.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)