PPT-Eddy Current Inspection Basic Principles

Eddy current inspection is one of several NDT methods that use the principal of electromagnetism as the basis for conducting examinations Eddy currents are created through a process called electromagnetic induction When alternating current is applied to the conductor such as copper wire a magnetic field develops in and around the conductor This magnetic field expands as the alternating current rises to maximum and collapses as the current is reduced to zero If another electrical conductor is brought into the close proximity to this changing magnetic field current will be induced in this second conductor Eddy currents are induced electrical currents that flow in a circular path They get their name from eddies that are formed when a liquid or gas flows in a circular path around obstacles when conditions are right. It is used for measuring targets made of electrically conductive materials which may be either ferromagnetic or nonferromagnetic A highfrequency alternating current flows through a coil cast in the sensor housing The electromagnetic coil field induc It is used for measuring targets made of electrically conductive materials which may be either ferromagnetic or nonferromagnetic A highfrequency alternating current flows through a coil cast in the sensor housing The electromagnetic coil field induc A high frequency alternating current is fed through a coil embedded in a sensor housing The electromagnetic field from the coil induces eddy currents in the conductive target As a consequence the alternating current resistance of the coil changes Th Eddies and mixing. L. Talley Fall, . 2015. 1. Mesoscale eddies. “Eddy” fluctuations in general (horizontal and vertical). Eddy kinetic energy. Eddies and horizontal mixing. Diapycnal (quasi-vertical) mixing. Moninya Roughan Helen Macdonald, John Wilkin, Mark Baird, Jason Everett. UNSW Coastal and Regional Oceanography Group. www.oceanography.unsw.edu.au. Circulation around Australia. Poleward. flowing currents along east and west coast. Tips for Passing Inspection. Michael . Nasson. 303 Alumni – Mechanical Engineer. Electrical Components. System Design/Planning. Inspection Tips. Resources. Questions. Agenda. Basic Electrical Components. . Lenz's law . Induced current produces a secondary magnetic field that is always opposed to the primary magnetic field that induced it, an effect called . Lenz’s law. .. Self-inductance (L). The alternating current in the coil generates an alternating magnetic field that induces an . Bro. . Danjuma. . Ogbere. ACTS 2:36-41. The Basic Principles of Church Growth. INTRODUCTION:. Every living organism experience growth and development. Growth is the only thing that shows that there is still life. When there is absence of growth life generally becomes and burden and unfit for living. The church as the house of God is generally seen as a living organism therefore it is expected to experience growth both spiritually and numerically. . DANGER DETECTOR production. Typical CT scanner. So how old is the CT scanner?. http://www.impactscan.org/slides/impactcourse/basic_principles_of_ct/img24.html. 2. nd. generation. http://www.impactscan.org/slides/impactcourse/basic_principles_of_ct/img25.html. Instructor: . Dr. . . Mostafa. . Ranjbar. BSc. , . MSc. , Ph.D. (Dr.-. Ing. .) from Technical University of Dresden, Germany. References:. “Introduction to . Nondestructive Testing - A Training . Guide. Instructor: . Dr. . . Mostafa. . Ranjbar. BSc. , . MSc. , Ph.D. (Dr.-. Ing. .) from Technical University of Dresden, Germany. References:. “Introduction to . Nondestructive Testing - A Training . Guide. EDDY CURRENTS SEPARATOR. Eddy . currents. are . an. . electrical. . phenomenon. . that. . occurs. . when. a conductor . goes. . through. a variable . magnetic. . field. . . This. . relative. also to increase the defect analysis reliability (3). In this context, CIVA simulation was chosen as the tools to validated the results obtain from the experimental done. CIVA is the simulation tools Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, . China. College of Electrical and Information Engineering , Hunan . University, Changsha 410082, China. Chaoqun. . Niu.