BEI026 NON-DESTRUCTIVE TESTING L T P C 3 0 0 3

OBJECTIVES To differentiate the Non destructive testing from destructive testing techniques. To understand the fundamentals and principles involved in the various Non destructive testing. To describe the procedures used to perform basic NDT techniques. To discuss the advantages and limitations of one method over other methods. To critically appraise the NDT techniques available and to select the most appropriate one for a given situation/application.

UNIT I VISUAL INSPECTION AND LIQUID PENETRANT TESTING 9 Introduction: Comparison of Destructive and Non-Destructive Tests-Conditions for Effective Non Destructive Testing Visual Inspection:-Optical aids used for visual Inspection-Applications Liquid Penetrant Testing: Physical Principles-Procedure for Penetrant Testing-Penetrant Testing Materials Penetrant Testing Methods-Water washable and Post-Emulsifiable Method.

UNIT II ULTRASONIC AND ACOUSTIC EMISSION TESTING 9 Ultrasonic Testing: Principle- Ultrasonic Transducers-Flaw detection equipment-Modes of display Variables affecting Ultrasonic Test-Pulse echo, through transmission and Angle Beam Testing Applications, Advantages and Limitations. Acoustic Emission Testing: Principle Instrumentation Advantages, Limitations and applications Acoustic Emission testing of metal pressure vessels-Fatigue crack detection in Aerospace structures.

UNIT III MAGNETIC PARTICLE, EDDY CURRENT AND MAGNETIC FLUX LEAKAGE TESTING 9 Magnetic Particle Testing: Principle- magnetizing techniques- Procedure used for testing a component Advantages, Limitations and applications Eddy current Testing: Principles Instrumentation for Eddy current testing Inspection of ferromagnetic materials-Pulsed eddy current testing- Applications. Magnetic Flux Leakage (MFL) Testing: Principle- Magnetizing and Demagnetizing methods MFL sensors Flaw detection and analysis in ferromagnetic specimen advantages, Limitations and applications.

UNIT IV THERMOGRAPHY AND RADIOGRAPHY TESTING 9 Thermography: Principle- Detectors and Equipments for active thrermography heating sources applications-Thermal imaging for condition monitoring of Industrial Components Radiography: Principle- Electromagnetic radiation sources Radiographic imaging equipments various inspection techniques-Reading and interpretation of radiographs safety in industrial radiography.

UNIT V INDUSTRIAL APPLICATIONS OF NON-DESTRUCTIVE TESTING 9 Industrial Applications of Non Destructive Testing: Railways- Nuclear industry chemical industry -aircraft and aerospace industries automotive industries-Selection of NDT methods Codes, standards, specifications and Procedures. TOTAL: 45 PERIODS TEXT BOOK 1.Baldev Raj, Jeyakumar, T., Thavasimuthu, M., Practical Non Destructive Testing, Narosa Publishing House, New Delhi, 2002. NEC (An Autonomous Institution) Curriculum & Syllabus for B.E. (EIE) Regulations2011 107

REFERENCES 1. Peter J. Shull Non Destructive Evaluation: Theory, Techniques and Application, Marcel Dekker, Inc., New York, 2002. 2. Prasad J and C.G.K. Nair, Non-Destructive Test and Evaluation of Materials, Tata McGraw-Hill Publishing Company Limited, New Delhi, 2008. 3. Charles J. Hellier, Hand Book of Non-Destructive Evaluation, The McGraw-Hill Companies, New York, 2003.