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CURATOR

PhD STUDENT, UNIVERSITI TEKNOLOGI MALAYSIA

PINBOARD SUMMARY

This topic is to nondestructively evaluate (NDE) turbine blade integrity using digital neutron radiography at low flux research reactor. Neutron radiography is basically using the same method as other radiography technique. Neutron radiography has 4 major components which are neutron source, collimator, samples and detector. In my scope of study, I have to design a collimator that suitable for neutron radiography at Reactor TRIGA PUSPATI (RTP), Malaysia. Besides, I am focusing on turbine blades as my samples of study because turbine blade is a important component in a system. Standard technique for inspecting turbine blades is using electromagnetic method. However, this technique can only applicable for defacts at outer surface of turbine blades. Hence, neutron radiography is a suitable option for evaluate the inner integrity of the turbine blade, since neutron can penetrate deep into the blade. As compared to other radiography technique such as x-ray or gamma radiography, neutron radiography can give different contrast of image because neutron interact with the nucleus of an atom and not with the electron cloud. Thus, neutron can penetrate easily with high atomic number materials such as lead. In my country Malaysia, neutron radiography not popular for inspecting because of several factors. My aims for this reseacrh is to redevelop neutron radiography facility at RTP and find crucial defacts on turbine blade that can only easily detact by neutron radiography.

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