JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. To understand the basic principles, techniques, equipment, applications and limitations of basic NDT methods.
• 2. To learn the selection of appropriate NDT methods.
• 3. To grasp the standards and specifications related to NDT technology.
• 4. To know the developments and future trends in NDT.

UNIT - I

Liquid Penetrant Inspection: Principles of penetrant inspection, characteristics of a penetrant, water-washable system, post-emulsification system, solvent-removable system, surface preparation and cleaning, Penetrant application, Development, Advantages limitations, and applications. Magnetic Particle Inspection: Principle, Magnetization methods, continuous and residual methods, sensitivities, Demagnetization, Magnetic particles, Applications, Advantages and limitations.

UNIT - II

Eddy Current Testing: Principle, Lift-off factor, and edge effects, Skin effect, Inspection frequency, coil arrangements, inspection probes, types of circuit, reference pieces, phase analysis, display methods and applications.

UNIT - III

Ultrasonic Testing: Generation of ultra sound, characteristics of an ultrasonic beam, sound waves at interfaces, sound attenuation, Display systems, Probe construction, type of display, Inspection techniques, Identification of defects, Immersion testing, Sensitivity & calibration.

Reference standards. Surface condition, Applications.

UNTT - IV Radiography: Principle and uses of Radiography, limitations, Principle, Radiation sources, Production of X-rays, x-ray spectra, Attenuation of radiation, Radiographic equivalence, Shadow formation, enlargement and distortion, Radiographic film and paper, Xeroradiography, fluoroscopy, Exposure factors, Radiographic screens, identification markers and image quality indicators, Inspection of simple shapes, inspection of complex shapes, viewing and interpretation of radiographs, Radiation hazard, Protection against radiation, measurement of radiation received by personnel.

R16 B.TECH MSNT.

UNIT - V

Acoustic Emission: Physical Principles, Sources of emission, instrumentation and applications. Other NDT Techniques: Neutron radiography, Laser induced Ultrasonics, Surface analysis, Thermography.

TEXTBOOKS:

• 1. Barry Hull & Vernon John, "Non Destructive Testing", 1988.
• 2. HJ. Frissell (Editorial Coordinator) - "Non-Destructive Evaluation and Quality Control" - ASM Hand Book - International Publication, USA, 1989.
• 3. Dove and Adams, "Experimental stress analysis and motion measurement", Prentice Hall of India, Delhi. R16 B.TECH MSNT.