A novel graphene-based Fe3O4 nanocomposite for magnetic particle inspection

2021 ◽  
Vol 63 (1) ◽  
pp. 92-96
Author(s):  
Zhongqiang Zhang ◽  
Leijun Lu ◽  
Yipin Yi
Keyword(s):  
Magnetic Property ◽  
Magnetic Particle ◽  
Simple Procedure ◽  
Nondestructive Inspection ◽  
Sedimentation Velocity ◽  
Magnetic Particle Inspection ◽  
Particle Material ◽  
Magnetization Intensity ◽  
Reduced Graphene ◽  
Crucial Part

Abstract The magnetic particle material is the crucial part in the field of nondestructive inspection. Nevertheless, traditional magnetic particle still leaves much to be desired. In this research, we designed a simple procedure to synthesize a novel graphene-based ferroferric oxide (Fe3O4) nanocomposite. All characterizations implied that Fe3O4 was anchored on the surface of reduced graphene oxide (RGO) nanosheets successfully. Especially this specimen reveals significant magnetic property improvement and macroscopic stability because of the synergistic effect between Fe3O4 and graphene, as compared to the traditional magnetic particle. More importantly, our method optimizes intrinsic magnetization intensity, reduces remanence and sedimentation velocity of magnetic particle material. Thus, this nanocomposite holds great potential for the field of magnetic particle inspection.

Magnetic Particle Inspection Simulation Model

1996 ◽  
pp. 569-576
Author(s):  
Atul Athavale ◽  
Lalita Udpa ◽  
Satish Udpa ◽  
Zuorong Zhang
Keyword(s):  
Simulation Model ◽  
Magnetic Particle ◽  
Magnetic Particle Inspection

Nondestructive Inspection Methods for Railroad Castings

2010 ◽  
Author(s):  
Daniel Carter ◽  
Kari Gonzales
Keyword(s):  
Magnetic Particle ◽  
Phased Array ◽  
Field Tests ◽  
Ultrasonic Pulse ◽  
Nondestructive Inspection ◽  
Inspection Method ◽  
Technology Center ◽  
Pulse Echo ◽  
Inspection Techniques

Transportation Technology Center, Inc. (TTCI) has investigated various nondestructive inspection (NDI) methods to determine if they are capable of reliably inspecting side frames, bolsters, knuckles, and couplers. The NDI methods used for this investigation include dry and wet (fluorescent) magnetic particle, liquid penetrant, alcohol wipe, visual, ultrasonic (pulse-echo and phased array), and radiography. Inspection results from all methods were used to determine which methods produced repeatable results. From the initial inspection analysis, TTCI engineers determined that the magnetic particle inspection method is the most capable for detecting defects in railroad castings. Further investigation of the magnetic particle technique was completed to develop reliable inspection methods for use on bolsters, side frames, knuckles, and couplers. Each of the inspection techniques have been used for inspections in the field. Using the results of the field tests, procedures were developed by TTCI and submitted to the Association of American Railroads’ (AAR) Coupling Systems and Truck Castings Committee for review and implementation. The inspection procedures can be used by manufacturers, railroads, and car repair shops. Limitations of the inspection procedures include the amount of time necessary to perform the inspection and the reliability of detecting certain types of defects below the surface of the casting. Although these limitations exist, the procedures developed by TTCI are expected to improve the quality of in-service castings and reduce the number of train partings and derailments due to broken or cracked components.

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