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Sang-Hyun Park, Sang-Hoon Yoon, Teguh Muttaqie, Quang Thang Do and Sang-Rai Cho
The residual strength of denting- and fracture-damaged box girders were experimentally and numerically investigated. The experiments were conducted under a pure bending moment using the four-point bending test method. The load, deflection, and strain wer...
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O. P. Razgonov,O. V. Adreevskykh,B. M. Bondarenko,D. O. Bezrukavyi
Pág. 12 - 15
The article considers issues of electromagnetic compatibility of traction network with the rail circuits. A mathematic model is elaborated for evaluation of distribution of harmonics of traction current on the length of feeder zone and determination of t...
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Kyungmok Kim
This paper describes statistical determination of fretting-induced failure of an electro-deposited coating. A fretting test is conducted using a ball-on-flat plate configuration. During a test, a frictional force is measured, along with the relative disp...
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Joon-Hwan Bae, Hyun-Duck Kwak, Sung-Jae Heo, Chang-Ho Choi and Jong-Soo Choi
Floating ring seals are widely used as a leakage control solution for turbomachines because they effectively operate with small clearances between the shaft and seal. The oxidizer pump of the 7 tonf liquid engine in the Korea Space Launch Vehicle II (KSL...
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Xueyan Wang, Yuan Mei, Yili Yuan, Rong Wang and Dongbo Zhou
Small-diameter jacked piles are widely used in civil engineering. The formation and development of the soil-plugging effect and surface frictional behavior of jacked piles have a high impact on the construction process and pile quality. Clarifying the de...
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Gaoke Ma, Hongyun Jia, Jichun Xiao and Lina Hao
Exoskeletal robots are of critical importance in the domain of mechanical boosting. The pneumatic artificial muscle (PAM) is commonly used as a flexible actuator in exoskeletal robots designed for upper limbs due to its high power-to-weight ratio, confor...
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Yujing Jiang, Baocheng Li, Changsheng Wang, Hengjie Luan, Sunhao Zhang, Qinglin Shan and Xianzhen Cheng
To study the shear deformation and failure characteristics of a wellbore and the interaction mechanism with its surrounding rocks induced by a layer slip during natural gas hydrates (NGHs) extraction, this paper conducted a numerical simulation study of ...
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Dong Yang, Quancheng Wang, Zhaoqun Jiang and Dongxu Yang
Conventional mortar cemented anchors cannot meet the needs for landslide emergency management, as they can withstand loads only after mortar curing for 14?28 days. This study developed a multi-segment expanded anchor (MSEA) that expands using a sliding m...
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Xiang Liu, Annan Jiang, Qian Fang, Yousheng Wan, Jianye Li and Xinping Guo
In this paper, we study the effects of the shield tunnel construction on the deformation of an existing pipeline parallel to and above the new shield tunnel. We propose an analytical solution to predict the spatiotemporal deformation of the existing pipe...
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Qingjun Xian, Zhe Wang, Xiaosong Liu, Shaokui Ma and Zhaoran Xiao
SMW (soil mixing wall) piles have been widely used in soft soil areas such as Jiangsu, Shanghai, Tianjin and so on, and they have many advantages, such as retaining the structures of foundation pits. In order to promote the application of SMW piles in sa...
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Fazil Veliev
Pág. 72 - 79
The article describes a study of the dynamics of interacting between loosening roller spikes and particles of raw cotton as well as the conditions for the raw cotton particles? bundling. The process of movement of raw cotton particles was considered on t...
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Brahim Menacer, Mostefa Bouchetara
Pág. 299 - 306
The oil consumption in an internal combustion engine is an important source of pollution and particulate emissions, main efforts are done by the manufacturers to reduce to the maximum the impact of the oil consumption on the emissions of the engine, and ...
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Zhaolong Zhu, Dietrich Buck, Xiaolei Guo, Pingxiang Cao and Mats Ekevad
This paper investigated the machinability of a stone?plastic composite (SPC) via orthogonal cutting with diamond cutters. The objective was to determine the effect of cutting depth on its machinability, including cutting forces, heat, chip formation, and...
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Yonghong Zhang, Chengmin Wang, Shuangquan Tang, You Jiang, Hong Chen and Wenjie Ge
This study investigates and designs a novel stacked hinge with low stiffness, large rotation angle, high strength, and length-adaptive functionality. Firstly, based on the large deformation theory of cantilever beams and relevant theories of leaf springs...
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Myeong-Ho Song, Taek-Kun Nam and Jae-ung Lee
The reliability of propulsion shafting systems is a major concern for ocean-going vessels because mid-ocean repairs can be time-consuming and spare parts must be available. To address this concern, vibration modeling and experimental measurements were co...
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Shangfei Hai, Yucong Miao, Lifang Sheng, Linbo Wei and Qing Chen
During the past few decades, rapid economic development occurred in Qingdao. Inevitably, human activities have caused great changes to the underlying surface, including urbanization and coastal change. Coastal change mainly refers to the expansion of the...
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Awaludin A.,Hirai T.,Sasaki Y.,Hayashikawa T.,Oikawa A.
Pág. 59 - 64
The effects of pretension in bolts on hysteretic response of timber joints exposed to a bending had been reported by the authors, but the cyclic tests were carried out at small displacement level which might not be applicable for earthquake-resistance de...
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Alastair Poole, Mark Sutcliffe, Gareth Pierce and Anthony Gachagan
Robotised Non Destructive Testing (NDT) presents multifaceted advantages, saving time and reducing repetitive manual workloads for highly skilled Ultrasonic Testing (UT) operators. Due to the requisite accuracy and reliability of the field, robotic NDT h...
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Xuan-Ha Nguyen, Tien-Hiep Mau, Ingo Meyer, Bao-Lam Dang and Hong-Phuc Pham
Modeling and waveform optimization are important research topics for piezo-actuated stick?slip micro-drives. In this paper, the dynamics of piezo-actuated stick?slip micro-drives (PASSMDs) are theoretically investigated. We introduce an extended model ta...
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