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Yongmei Zhu, Rujun Li and Jiahao Yang
This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained. Considering the influence of plast...
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Peng Yu, Xuefeng Huang, Youping Gong and Shengji Li
The automatic opening of an ampoule bottle is key to making the operation of the sterility inspection automatic. During the automatic opening, the fracture characteristics on the neck of ampoule bottle need to be deeply understood to avoid the contaminat...
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Muhammad Abi Berkah Nadi, Sayed Ahmad Fauzan
Pág. 1 - 9
Recovery efforts following a disaster can be slow and painstaking work, and potentially put responders in harm's way. A system which helps identify defects in critical building elements (e.g., concrete columns) before responders must enter a structure ca...
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Joseph Spagnol, Helen Wu and Chunhui Yang
Many studies on cracked rotors developed crack breathing models that assume that the neutral axis of bending always remains horizontal for simplification. These models may generate significant discrepancies and thus there is a need to develop more sophis...
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Zongyuan Zhang, Hongyuan Fang, Bin Li and Fuming Wang
Concrete pipes are the most widely used municipal drainage pipes in China. When concrete pipes fall into years of disrepair, numerous problems appear. As one of the most common problems of concrete pipes, cracks impact on the deterioration of mechanical ...
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Liqiang Guan, Mingxia Zou, Xili Wan and Yifeng Li
This paper investigates the direction identification of micro-cracks with nonlinear components generated by Lamb wave with frequency-mixing technique. Three-dimensional finite element simulations were carried out to investigate the interaction mechanism ...
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Dae Yun Kim, Chan Ho Jeong, Beom Jin Park, Min Suk Ki, Myung-Soo Shin and Seong Hyuk Lee
This study investigates numerically gaseous CO2 leakage characteristics inside the containers of a transport ship and examines thermal effects on the structural damage that might happen in the containers. First, with consideration of the phase change, th...
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Savisha Mahalingam, Salmi Mohd Yunus, Abreeza Manap, Nurfanizan Mohd Afandi, Rabiatul A. Zainuddin and Nurul F. Kadir
Thick thermal barrier coatings (TBCs) are the main choice in the aviation industry due to their ability to handle elevated temperature exposure in turbines. However, the efficacy of thick TBCs has not been adequate. This study presents a highly durable, ...
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Charalampos Konstantinou and Giovanna Biscontin
Fluid injection in a porous medium is the underlying mechanism for many applications in the fields of groundwater hydraulics, hydrology and hydrogeology, and geo-environmental engineering and in the oil and gas industry. Fluid flow experiments in porous ...
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Chan Ho Jeong, Min Kyu Ko, Moonjin Lee and Seong Hyuk Lee
The present study aimed to numerically establish a new metamodel for predicting the propagation distribution of styrene, which is one of the hazardous and noxious substances (HNSs) spilled from ships. Three-dimensional computational fluid dynamics (CFD) ...
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Steffen Beck-Broichsitter, Horst H. Gerke and Rainer Horn
The effects of compaction on soil shrinkage behavior need to be considered for engineering long-term durable mineral liners of landfill capping systems. For this purpose, a new three-dimensional laser scanning device was coupled with a mathematical-empir...
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Xunqian Xu, Qi Li, Shue Li, Fengyi Kang, Guozhi Wan, Tao Wu and Siwen Wang
Based on the tunnel crack width identification, there are operating time constraints, limited operating space, high equipment testing costs, and other issues. In this paper, a large subway tunnel is a research object, and the tunnel rail inspection car i...
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Feilong Li, Changshan Jiang, Guoqing Cai, Jianjun Luo, Qian Yu, Heqing Zhang and Lei Wang
In this study, a refined three-dimensional stratigraphic?structural model is established based on ABAQUS finite element software, and the basis for determining pneumatic and vibration loads is explained in detail. From this, the force characteristics of ...
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Thi Tuyet Trinh Nguyen, Van Bac Nguyen and Minh Quan Thai
In this paper, the flexural strength and buckling of the partially concrete-filled steel tubes (PCFST) under laterally repeated loads was investigated through three-point bending test configuration. Three-dimensional Finite Element (FE) models of the ben...
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Hong-Liang Tang, Jun Yang and Qi Yu
Rock fragmentation by blasting influences ore recovery and the cost of downstream operations. The development of electronic detonators makes it possible to improve fragmentation by controlling the initiation timing in blasting projects, and the effect of...
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Pengyu Liu, Yinghao Shen, Mianmo Meng, Senlin Luo, Yi Zhong and Qiming Cen
Gravel is one of the main factors affecting the mechanical properties of conglomerates, which plays a decisive role in crack propagation. In this paper, taking the conglomerate of the Baikouquan Formation in Mahu Sag of Xinjiang as the research object, a...
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Pengfei Wang, Weiqiang Wang, Sanlong Zheng, Bingbing Chen and Zengliang Gao
Nonlinear ultrasonic testing is highly sensitive to micro-defects and can be used to detect hidden damage and defects inside materials. At present, most tests are carried out on specimens, and there are few nonlinear ultrasonic tests for fatigue damage o...
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José Castorena, Adán Borunda, Citlalli Gaona, Alberto Martínez, Facundo Almeraya
Pág. Page 35 - 42
Based on studies with finite element method, a model able to predict the quantity of steel corrosion (rcrit) necessary for the first visible crack appearance in the surface of the concrete cover was obtained. For the finite element analysis the software ...
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