Experimental research on electromagnetic heating effects to stop crack propagation in metal components

2002 ◽  
Author(s):  
Xiangzhong Bai ◽  
Yuming Fu ◽  
Lijuan Zheng ◽  
Diankui Gao
Keyword(s):  
Crack Propagation ◽  
Experimental Research ◽  
Electromagnetic Heating ◽  
Heating Effects

scholarly journals An Experimental Research on Crack Propagation Regularity During Fracture Grouting

2021 ◽  
Vol 651 (3) ◽  
pp. 032047
Author(s):  
Shaozhen Cheng ◽  
Fa Yang ◽  
Yuchen Dai ◽  
Zili Yang ◽  
Ye Shi
Keyword(s):  
Crack Propagation ◽  
Experimental Research ◽  
Fracture Grouting

Experimental Research of Acoustic Emission (AE) Testing of Blowout Preventer in the Process of Pressured

2014 ◽  
Vol 962-965 ◽  
pp. 411-414 ◽  
Author(s):  
Jun Ru Zhao ◽  
Ting Ting Miao ◽  
Guan Ga Dai
Keyword(s):  
Acoustic Emission ◽  
Crack Propagation ◽  
Experimental Research ◽  
Pressing Process ◽  
Blowout Preventer

Using acoustic emission (AE) technique, test the blowout preventer (BOP) shell with a crack in the pressing process. Firstly, cut a notch of 100mm long and 5mm wide on a BOP shell and weld partly, then pressurized by pneumatic pumps. Test the BOP shell during the crack propagation by AE. The result showed that the AE technique can reflect the activities of the defects timely and effectively, and the destroy situation of the blowout preventer shell in the process of pressured and the location was accurate.

Experimental research on surface crack propagation laws for low alloy steel

1982 ◽  
Vol 16 (1) ◽  
pp. 105-113 ◽  
Author(s):  
Kang-Sian Lee ◽  
Len-Ji Yu ◽  
Zi-Hong Jin ◽  
Kai-Zuo Liang
Keyword(s):  
Crack Propagation ◽  
Alloy Steel ◽  
Experimental Research ◽  
Surface Crack ◽  
Low Alloy Steel

Quantifying damage evolution within olivine basalt based on crack propagation behavior under microwave irradiation

2021 ◽  
pp. 105678952110173
Author(s):  
Yuan Yuan ◽  
Zhushan Shao ◽  
Rujia Qiao ◽  
Xinshuang Fei ◽  
Dandan Wu
Keyword(s):  
Microwave Irradiation ◽  
Crack Propagation ◽  
Damage Evolution ◽  
Characteristic Length ◽  
Mineral Particle ◽  
Short Cracks ◽  
Propagation Behavior ◽  
Heating Effects ◽  
Mineral Components ◽  
Crack Propagation Behavior

Application of microwave heating technique is highly promising in assisting rocks breakage and recycling coarse aggregate in waste concrete. This work focus on crack propagation behavior and hence damage of hard rocks subjected to microwave irradiation. Heating effects of basalt and its main mineral components are investigated experimentally using a multimode industrial microwave system. Crack characterization of basalt after irradiating are observed using scanning electron micrograph (SEM). A theoretical model based on heating effects of mineral components is established to deduce crack propagation within basalt under microwave irradiation. Temperature rise of magnetite is drastic while that of other mineral components are tardy. Fracture of basalt is induced by predominant radial crack propagation around the rapidly heated mineral particle. Cracks can be divided into short cracks and long cracks by a characteristic length during extending. Microwave energy required for extension of cracks with characteristic length is minimum. Propagation of initial short cracks results in greater extent of damage evolution instantaneously. Moreover, damage increases with the mineral content of magnetite and decreases with crack density.

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