Article
Engineering, Mechanical
Hongyuan Zhou, Xuejian Zhang, Xiaojuan Wang, Xiuli Du, Shangjiang Yu, Yonghui Wang, Jin Jiang
Summary: The present study investigated the protection effectiveness of sacrificial cladding under near-field blast through experimental and numerical methods. Results showed that increasing face plate thickness and core strength can achieve positive protection effects by reducing energy input to the system and increasing energy absorption of the cladding.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Review
Engineering, Multidisciplinary
Moustafa Esa, Mostafa S. Amin, Ahmed Hassan
Summary: Recent researches have focused on developing robust blast load mitigation systems to counter the threats of terrorist attacks. One main strategy embraced is structural systems using mitigation techniques. Redirecting wave propagation through tubes is a promising technique, with novel systems showing high performance in mitigating blast waves.
DEFENCE TECHNOLOGY
(2021)
Review
Mechanics
Piyush Wanchoo, Helio Matos, Carl-Ernst Rousseau, Arun Shukla
Summary: Polymer-based sandwich composites are increasingly used in the marine industry and face the risk of encountering high-intensity underwater or in-air explosive loading. This review discusses achieving blast mitigation with polymeric composites and highlights the differences in loading mechanisms between AIREX and UNDEX. Understanding these mechanisms facilitates tailored design approaches for blast mitigation, with recent research on composite sandwich architecture and other foam metamaterial constructions also addressed.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Fengyuan Yang, Zhijie Li, Zhuo Zhuang, Zhanli Liu
Summary: This paper proposes a new method to experimentally and numerically evaluate the blast mitigation performance of hard/soft composite structures, and analyzes the blast mitigation mechanism of such structures. The experimental results show that the hard/soft structures can effectively mitigate the blast pressure pulse, and the numerical results and theoretical model support this finding. This study is meaningful for evaluating and designing high-performance blast mitigation structures.
ACTA MECHANICA SINICA
(2022)
Article
Engineering, Civil
Yanchao Shi, Ye Hu, Shaozeng Liu, Jian Cui, Li Chen
Summary: This study proposes the concept of using a hanging granite slab to mitigate blast loads on reinforced concrete columns. A finite element model is established to simulate the interaction between the blast wave and the dry-hanging granite slab, revealing the protection mechanism of the RC column. The influences of slab thickness and hanging distance on blast mitigation are investigated. Blast load mitigation factors and their empirical models are proposed as a function of scaled distance, slab thickness, and hanging standoff distance.
ENGINEERING STRUCTURES
(2023)
Article
Biotechnology & Applied Microbiology
Eduardo A. Rebelo, Grigoris Grigoriadis, Diagarajen Carpanen, Anthony M. J. Bull, Spyros D. Masouros
Summary: In this study, a finite-element model of the leg was developed and validated to quantify the protection offered by a combat boot in blast-related loading conditions, showing promising results for reducing injury severity.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Therese Schunck, Dominique Eckenfels
Summary: Protective barriers made of perforated plates, with or without a water cover, can effectively reduce the impact of blast waves on urban building facades and improve mitigation performance. Increasing the number of plates decreases overpressure and impulse downstream, enhancing the solution's effectiveness.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Marine
Yasser A. Khalifa, Mohamed N. Lotfy, Elsayed Fathallah
Summary: This study simulated the response of a steel ferry to explosive blasts and proposed a new mitigation system to dissipate the blast energy. The results showed that the new design could mitigate over 50% of the blast waves, indicating its potential for blast wave mitigation. This research provides a reference for structural protection against blast waves.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Amit Kumar, Santosh Subhash Palmate, Rituraj Shukla
Summary: Water quality indices and models play an important role in evaluating the water quality of freshwater bodies, but their predictions are often highly uncertain due to their site-specific nature. The formulation of models and indices remains a challenging and hot research topic in the scientific community. The inspiration for this Special Issue is to provide a platform for sharing research results and informing young minds worldwide to develop suitable models for understanding water quality and taking proactive measures.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Nhi H. Vo, Thong M. Pham, Kaiming Bi, Wensu Chen, Hong Hao
Summary: A dual-meta panel functioning as a sacrificial cladding is proposed in this study to investigate its blast mitigation capacity. The panel shows advantages in controlling stress wave propagation and energy absorption, leading to efficient resistance against blast loadings.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Adam G. Taylor
Summary: This paper presents the results of numerical hydrocode analysis to confirm the expected incident overpressure and impulse from ground explosions, as well as the effect of blast waves on mitigation barriers.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Jinwon Shin, Seungki Pang, Dong-Keon Kim
Summary: This study uses numerical analysis to reduce the overpressure inside protective tunnels caused by external detonations. A three-dimensional computational fluid dynamics model is established to simulate the detonation of a hemispherical charge with specific weight and distance parameters. The effects of entrance shape and blast pockets on maximum overpressure reduction are investigated using the validated numerical model. An optimized tunnel shape is proposed to effectively reduce peak overpressures by up to 64.5%. The study aims to protect facilities, personnel, and equipment and decrease construction costs by lowering overpressure ratings of blast valves in protective tunnels.
APPLIED SCIENCES-BASEL
(2023)
Article
Polymer Science
Weibo Huang, Rui Zhang, Xu Wang, Ping Lyu, Jiahui Ju, Fuyin Gao, Shuai Yan
Summary: This study investigated the response and energy absorption performance of polyurea under various frequency loads. The results showed that T26 polyurea has a wide temperature range and low microphase separation, making it suitable for different environmental temperatures and loading frequencies. In the contact explosion of 10 kg TNT, T26 polyurea significantly reduced the fragmentation rate of the coated specimen, achieving a zero fragmentation protection effect.
Article
Engineering, Civil
Xuejian Zhang, Xiaojuan Wang, Hongyuan Zhou, Xiuli Du, Hai-Lin Zou, Tianyi Song, Yonghui Wang, Hong Zhang
Summary: A novel cladding-connector system consisting of sacrificial cladding and connectors was proposed to protect vulnerable walls in frame structures from blast loads. The system achieved both high energy absorption and low load transfer. The numerical model was established and validated using compression tests and blast tests. Comparisons between systems with flexible and rigid connectors showed that the system with flexible connectors exhibited superior performance in terms of energy absorption and load transfer, especially under intense blasts. The proposed system with flexible connectors was more promising for effectively protecting existing frame structures against blasts.
THIN-WALLED STRUCTURES
(2023)
Article
Agronomy
Robert A. Van Steenwyk, Joel P. Siegel, Barat Bisabri, Christian S. Cabuslay, Jaime M. Choi, J. W. Steggall, Kevi C. Mace, Steve W. Blecker, Perry A. Poe, Stephen R. Peters-Collaer, Parry Klassen
Summary: The novel spray technique (Air-in) significantly reduces pesticide drift by 53% to 99% at 7.6 m from the orchard drip line compared to standard methods, while maintaining or improving pesticide coverage on almond, walnut, and pistachio with minimal cost to growers.
PEST MANAGEMENT SCIENCE
(2021)