Results 21 to 30 of about 6,265 (226)

X-ray microtomographic characterization and quantification of the strain rate dependent failure mechanism in cenosphere epoxy syntactic foams [PDF]

, 2016
This work investigates the failure mechanism in cenosphere epoxy syntactic foams at the quasi-static and dynamic strain rates. Split-Hopkinson pressure bar experiments are controlled to stop dynamic deformation of the foams at various strain stages.
Adrien, Ahmadi, Awaja, Das, Dou, Gu, Huang, Huang, Kim, Kishore, Klaus, Labella, Li, Li, Li, Li, Maire, Orbulov, Pellegrino, Peroni, Song, Veseniak, Viot, Wang, Woldesenbet, Woldesenbet, Wouterson   +26 more
core   +1 more source

Experimental study on the dynamic mechanical characteristics of slope rock under low-temperature conditions

工程科学学报, 2023
China has large regions that freeze seasonally or multiple times a year. Special geological and climatic conditions must be considered for the engineering construction and mining of mineral resources in these regions, and slope stability in cold regions ...
Feng GAO, Gen YANG, Xin XIONG, Ke-ping ZHOU, Cong LI, Jie-lin LI   +5 more
doaj   +1 more source

Study on the dynamic propagation and numerical simulation of mode Ⅰ and mixed mode Ⅰ-Ⅱ cracks in PMMA specimens with unilateral semicircular holes

矿业科学学报, 2020
A new approach is provided to study the growth problems of mode Ⅰ and mode Ⅰ-Ⅱ mixed cracks, Split Hopkinson Pressure Bar(SHPB) is used to impact the PMMA USH(Unilateral semicircular hole) specimen containing precast crack.Results of mode Ⅰ cracks and ...
Li Chengxiao, Zhang Yuantong, An Chen
doaj   +1 more source

Dynamic characteristics and constitutive model of coal samples with different length diameter ratio

矿业科学学报, 2023
In order to study the dynamic performance of coal samples with different length diameter ratio under impact load, this paper used an improved Hopkinson compression bar experimental device (ϕ75 mm), and carried out the impact compression experiments under
Xie Beijing, Luan Zheng, Chen Dongxin, Zhong Shiqing   +3 more
doaj   +1 more source

Briefing: UK Ministry of Defence Force Protection Engineering Programme [PDF]

, 2013
The Defence Science and Technology Laboratory sponsored, QinetiQ-led Force Protection Engineering Research Programme has two main strands, applied and underpinning research. The underpinning strand is led by Blastech Ltd.
Andrew Jardine, Andrew Tyas, Angus Williams, Jim Warren, Mihail Petkovski, Peter Gould, Philip Church, Porter D, Samuel Clarke, Stephen Kerr   +9 more
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Experimental research on dynamic mechanics of early age concrete

矿业科学学报, 2020
The single and double impact experiments were carried out on C20 and C40 concrete at five different ages using a 75 mm SHPB experimental device.The mechanical properties of early age concrete under impact loading were systematically studied from two ...
Li Shenglin, Ling Tianlong, Zhang Huige, Zhang Mingyue   +3 more
doaj   +1 more source

Dynamic mechanical properties and microscopic damage characteristics of deep skarn after high-temperature treatment

Yantu gongcheng xuebao, 2022
The skarn at a depth of 700 m is taken as the research object to study the dynamic behaviors of deep rocks under high temperature. The impact compression tests at different impact air pressures (0.8, 1.0 and 1.2 MPa) are carried out on the skarn at room ...
LIU Lei 1, LI Rui 1, QIN Hao 1, LIU Yang 2
doaj   +1 more source

Energy dissipation and fractal characteristics of weakly cemented red sandstone under disturbance impact

Yantu gongcheng xuebao, 2022
To explore the energy dissipation law and failure mode of soft rock interlayer in western mining areas of China after dynamic disturbance, the dynamic impact failure tests on weakly cemented red sandstone are carried out by using the separated Hopkinson ...
ZHANG Hui-mei 1, CHEN Shi-guan 2, WANG Lei 2, CHENG Shu-fan 3, YANG Geng-she 2, SHEN Yan-jun 4
doaj   +1 more source

Dynamic Behaviors and Microstructure Evolution of Iron–Nickel Based Ultra-High Strength Steel by SHPB Testing

Metals, 2019
Iron−nickel based ultra-high strength steel (wt. 18~20% Ni) is characterized by its high strength and low thermal conductivity, and is normally used to make key components by forming and machining processes.
Hongge Fu, Xibin Wang, Lijing Xie, Xin Hu, Usama Umer, Ateekh Ur Rehman, Mustufa Haider Abidi, Adham E. Ragab   +7 more
doaj   +1 more source

On the high strain rate behavior of 63-37 Sn-Pb eutectic solders with temperature effects [PDF]

, 2014
This study presents experimental results performed on samples of Eutectic solder material (63 wt. % Sn 37 wt. % Pb) loaded at high strain rates and elevated temperatures.
Bin Wang, Harding, Haward, Johnson, Kappor, Kolsky, Lim, Manson, Naveed Iqbal, Pu Xue, Rabin, Rabin, Rittel, Rittel, Rittel, Seah, Taylor, Tummala, Tummala, Wang, Yulong Li   +20 more
core   +1 more source