Syllabus of Uttarakhand Tech.Univ (B.Tech Mech.Eng.4th yr)VII Semester-Non Destructive testing

Non Destructive testing
Unit-1
INTRODUCTION:
Scope and advantages of N.D.T. some common NDT methods used since ages - visual
inspection, Ringing test, and chalk – test (oil-whiting test) their effectiveness in detecting
surface cracks, bond strength and surface defects.
Unit-2
Common NDT methods
Dye – penetrant tests – principle, scope, equipment and techniques. Zyglo testing. Magnetic
Particle Tests- Scope of test, Principle equipment and technique. DC And AC magnetization,
use of day and wet powders magnaglow testing. Interpretations of results.
Unit-3
RADIOGRAPHIC METHODS
X-ray radiography – principle, equipment and methodology. Interpretation of radiographs,
Limitations Gamma ray radiography. Principle, equipment, source of radioactive material and
technique. Precautions against radiation hazards, Advantage over x-ray radiography methods. 8
Unit-4
ULTRASONIC TESTING METHODS
Introduction Principle of Operation – piezoelectricity. Ultrasonic probes, cathode ray
oscilloscope techniques and advantages limitation and typical applications.
Unit-5
Testing of castings, forgings & weldments
Application of NDT methods in inspection of castings, forgings and welded structures with
illustrative examples. Case studies. Sample-testing in the lab

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