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Ultrasonic Examination Level III - Preparatory Course
Objectives

Objectives: • The level III course review the basic principles developed at level II and then goes on to discuss the advantages and limitations of Various Ultrasonic Testing Procedures. A great deal of importance is placed on the Inspection & Evaluation of indications arising from both primary and secondary processing discontinuities.

Outlines

Contents: 1.0 Principles / Theory 1.1. General 1.2 Principles of Acoustics 1.2.1 Nature of sound waves 1.2.2 Modes of sound wave generation 1.2.3 Velocity, frequency and wavelength of sound waves 1.2.4 Attenuation of sound waves 1.2.5 Acoustic impedance 1.2.6 Reflection 1.2.7 Refraction and mode conversion 1.2.8 Snell’s law and critical angles 1.2.9 Fresnel and Fraunhofer effects 2.0 Equipment / Materials 2.1 Equipment 2.1.1 Pulse echo instrumentation 2.1.1.1 Controls and circuits 2.1.1.2 Pulse generation (spike, square wave and toneburst pulsers) 2.1.1.3 Signal detection 2.1.1.4 Display and recording methods, A scan, B scan, C scan and digital 2.1.1.5 Sensitivity and resolution 2.1.1.6 Gates, alarms and attenuators 2.1.1.6.1 Basic instrument calibration 2.1.1.6.2 Calibration blocks 2.1.2 Digital thickness instrumentation 2.1.3 Transducer operation and theory 2.1.3.1 Piezoelectric effect 2.1.3.2 Types of transducer elements 2.1.3.3 Frequency (transducer elements –thickness relationships) 2.1.3.4 Near field and far field 2.1.3.5 Beam spread 2.1.3.6 Construction, materials and shapes 2.1.3.7 Types (straight, angle, dual, etc.) 2.1.3.8 Beam intensity characteristics 2.1.3.9 Sensitivity, resolution and damping 2.1.3.10 Mechanical vibration into parts 2.1.3.11 Other types of transducers (laser UT, EMAT, etc.) Contd/ … 2.1.4 Transducer operation/manipulations 2.1.4.1 Tanks, bridges, manipulators and squirters 2.1.4.2 Wheels and special hand devices 2.1.4.3 Transfer devices for materials 2.1.4.4 Manual manipulation 2.1.5 Resonance testing equipment 2.1.5.1 Bond Testing 2.1.5.2 Thickness testing 2.2 Materials 2.2.1 Couplants 2.2.1.1 Contact 2.2.1.1.1 Purpose and principles 2.2.1.1.2 Materials and their efficiency 2.2.1.2 Immersion 2.2.1.2.1 Purpose and principles 2.2.1.2.2 Materials and their efficiency 2.2.1.2.3 Air coupling 2.2.2 Calibration blocks 2.2.3 Cables / connectors 2.2.4 Test Specimen 2.2.5 Miscellaneous materials 3.0 Techniques / Calibrations 3.1 Contact 3.1.1 Straight beam 3.1.2 Angle beam 3.1.3 Surface wave and plate waves 3.1.4 Pulse-echo transmission 3.1.5 Multiple transducers 3.1.6 Curved surfaces 3.2 Immersion 3.2.1 Transducer in water 3.2.2 Water column, wheels, etc. 3.2.3 Submerged test part 3.2.4 Sound beam path – transducer to part 3.2.5 Focused transducers 3.2.6 Curved surfaces 3.2.7 Plate waves 3.2.8 Pulse-echo and through-transmission 3.3 Comparison of contact and immersion methods 3.4 Remote monitoring Contd/ … 3.5 Calibration (electronic and functional) 3.5.1 General 3.5.2 Reference reflectors for calibration 3.5.2.1 Balls and flat bottom holes 3.5.2.2 Area amplitude blocks 3.5.2.3 Distance amplitude blocks 3.5.2.4 Notches 3.5.2.5 Side-drilled holes 3.5.2.6 Special blocks – IIW and others 3.5.3 Equipment 3.5.3.1 Various monitor displays (amplitude, sweep, etc.) 3.5.3.2 Recorders 3.5.3.3 Alarms 3.5.3.4 Automatic and semiautomatic systems 3.5.3.5 Electronic distance amplitude correction 3.5.3.6 Transducers 3.5.4 Calibration of equipment electronics 3.5.4.1 Variable effects 3.5.4.2 Transmission accuracy 3.5.4.3 Calibration requirements 3.5.4.4 Calibration reflectors 3.5.5 Inspection calibration 3.5.5.1 Comparison with reference blocks 3.5.5.2 Pulse-echo variables 3.5.5.3 Reference for planned tests (straight beam, angle beam, etc.) 3.5.5.4 Transmission factors 3.5.5.5 Transducers 3.5.5.6 Couplants 3.5.5.7 Materials 4.0 Interpretations / Evaluations 4.1 Evaluation of base material product forms 4.1.1 Ingots 4.1.1.1 Process review 4.1.1.2 Types, origin and typical orientation of discontinuities 4.1.1.3 Response of discontinuities to ultrasound 4.1.1.4 Applicable codes, standards, specs 4.1.2 Plate and sheet 4.1.2.1 Process Review 4.1.2.2 Types, origin and typical orientation of discontinuities 4.1.2.3 Response of discontinuities to ultrasound 4.1.2.4 Applicable codes, standards, specs 4.1.3 Bar and Rod 4.1.3.1 Process review 4.1.3.2 Types, origin and typical orientation of discontinuities 4.1.3.3 Response of discontinuities to ultrasound 4.1.3.4 Applicable codes, standards, specs Contd/ … 4.1.4 Pipe and tubular products 4.1.4.1 Process review 4.1.4.2 Types, origin and typical orientation of discontinuities 4.1.4.3 Response of discontinuities to ultrasound 4.1.4.4 Applicable codes, standards, specs 4.1.5 Forgings 4.1.5.1 Process review 4.1.5.2 Types, origin and typical orientation of discontinuities 4.1.5.3 Response of discontinuities to ultrasound 4.1.5.4 Applicable codes, standards, specs 4.1.6 Castings 4.1.6.1 Process Review 4.1.6.2 Types, origin and typical orientation of discontinuities 4.1.6.3 Response of discontinuities to ultrasound 4.1.6.4 Applicable codes, standards, specs 4.1.7 Composite structures 4.1.7.1 Process Review 4.1.7.2 Types, origin and typical orientation of discontinuities 4.1.7.3 Response of discontinuities to ultrasound 4.1.7.4 Applicable codes, standards, specs 4.1.8 Miscellaneous product forms as applicable (rubber, glass, etc.) 4.1.8.1 Process review 4.1.8.2 Types, origin and typical orientation of discontinuities 4.1.8.3 Response of discontinuities to ultrasound 4.1.8.4 Applicable codes, standards, specs 4.2 Evaluation of weldments 4.2.1 Process review 4.2.2 Weld geometries 4.2.3 Types, origin and typical orientation of discontinuities 4.2.4 Response of discontinuities to ultrasound 4.2.5 Applicable codes, standards, specs 4.3 Evaluation of bonded structures 4.3.1 Manufacturing process 4.3.2 Types, origin and typical orientation of discontinuities 4.3.3 Response of discontinuities to ultrasound 4.3.4 Applicable codes, standards, specs 4.4 Variables affecting test results 4.4.1 Instrument performance variations 4.4.2 Transducer performance variations 4.4.3 Test specimen variations 4.4.3.1 Surface condition 4.4.3.2 Part geometry 4.4.3.3 Material structure Contd/ … 4.4.4 Discontinuity variations 4.4.4.1 Size and geometry 4.4.4.2 Relation to entry surface 4.4.4.3 Type of discontinuity 4.4.5 Procedure variations 4.4.5.1 Recording criteria 4.4.5.2 Acceptance criteria 4.4.6 Personnel variations 4.4.6.1 Skill level in interpretation of results 4.4.6.2 Knowledge level in interpretation of results 4.5 Evaluation (General) 4.5.1 Comparison procedures 4.5.1.1 Standards and references 4.5.1.2 Amplitude, area and distance relationship 4.5.1.3 Application of results of other NDT methods 4.5.2 Object appraisal 4.5.2.1 History of part 4.5.2.2 Intended use of part 4.5.2.3 Existing and applicable code interpretation 4.5.2.4 Type of discontinuity and location 5.0 Procedures 5.1 Specific applications 5.1.1 General 5.1.2 Flaw detection 5.1.3 Thickness measurement 5.1.4 Bond evaluation 5.1.5 Fluid flow measurement 5.1.6 Material properties measurements 5.1.7 Computer control and defect analysis 5.1.8 Liquid level sensing 5.1.9 Process control 5.1.10 Field inspection 5.2 Codes/Standards/Specifications 6.0 Evaluation 6.1 Comparison procedures 6.1.1 Standards and references 6.1.2 Amplitude, area and distance relationship 6.1.3 Application of results of other NDT methods 6.2 Object appraisal 6.2.1 History of part 6.2.2 Intended use of part 6.2.3 Existing and applicable code interpretation 6.2.4 Type of discontinuity and location

Who Should Attend

Who should attend? • The course is designed for anyone who is interested in satisfying the certification requirements for Ultrasonic Testing Level III certification or who needs a thorough knowledge and practical experience of Ultrasonic Testing Techniques.

Duration

5 Days

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