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NDI OVERVIEW

This NDI overview course provides basic NDE information for managers, supervisors, engineers and technicians. It includes general information about the most common NDE methods, their applications, and their advantages and disadvantages

These NDE methods include, radiography, liquid penetrant, ultrasound, eddy current, magnetic particle, liquid penetrant and more advanced techniques like: laser shearography, infrared thermography and laser ultrasound.

Cost: $47.00 for a 3 month license

Click on a lesson name below to view the covered topics

ULTRASONIC TESTING
Overview of Ultrasonics

  • Terms & Definitions
  • What is Ultrasound?
  • What is Ultrasonics?
  • Applications for Ultrasonic Testing
  • Advantages of Ultrasonics
  • Disadvantages of Ultrasonics

Elementary Principles

  • Types (modes of vibration) of Ultrasonic Sound Waves
  • Basic Sound Wave Characteristics
  • Propagation Characteristics
  • Zones of Sound
  • Beam Spread

UT Testing Methods

  • General Purpose Test Unit
  • Basic Ultrasonic Methods
  • Scan Modes
  • Ultrasonic Transducers
  • Coupling Techniques
  • Reference Standards
  • Sensitivity
  • Resolution

RADIOGRAPHIC TESTING
Overview of Radiographic Testing

  • What is a Radiograph?
  • Radiographic Process
  • Forms of Radiation
  • Applications for Radiographic Testing
  • Advantages of Radiographic Testing
  • Disadvantages of Radiographic Testing

Elementary Principles

  • Nature of Radiation
  • How X-rays are Produced
  • Radiation Intensity
  • Radiation Quality

Gamma Ray Equipment

  • Storage Container
  • Handling with a Cable Drive
  • Gamma Ray Beam Configuration

Selection of Equipment

  • Analysis of Inspection Task
  • Factors in the Selection of X-ray Equipment
  • Selection of Gamma Ray Equipment

Radiographic Film

  • Overview
  • Film Types
  • Contrast & Film Density
  • Image Density
  • Radiographic Exposure
  • Film Characteristic Curves
  • Radiographic Screens
  • Film Processing

Interpretation

  • Overview
  • Sensitivity & Definition
  • Penetrameters

Special Radiography

  • Real Time Radiography (RTR)
  • Computed Tomography (CT)
  • Pulsed X-ray
  • Neutron Radiography

PENETRANT TESTING
Overview of Liquid Penetrant Testing

  • Process Description
  • Process Steps
  • Applications for Liquid Penetrant Testing
  • Advantages
  • Disadvantages

Physical Principles

  • Concept & Influencing Factors
  • Wetting Ability of Liquids
  • Capillary Rise or Fall
  • Viscosity of Liquids
  • Other Desirable Properties

Penetrant Systems

  • Classification of Penetrant Systems
  • Dyes
  • Emulsifiers
  • Sensitivity
  • Developers
  • Removers

Inspection Procedures

  • Basic Steps
  • Cleaning Methods
  • Penetrant Application
  • Excess Penetrant Removal
  • Developer Application & Drying
  • Visual Examination & Interpretation

Relevant General Information

  • Specifications & Standards
  • Equipment Categories
  • Selecting Penetrant Systems

EDDY CURRENT TESTING
Overview of Eddy Current

  • What are Eddy Currents?
  • How Eddy Currents are Produced
  • How Eddy Currents are used in Nondestructive Testing
  • Applications for Eddy Current Testing
  • Advantages of Eddy Current Testing
  • Disadvantages of Eddy Current Testing

Elementary Principles of Eddy Current Testing

  • Production of Eddy Currents
  • Eddy Current Effects
  • Principles of Impedance Testing
  • Principles of Phase Amplitude Testing
  • Depth of Penetration

Method

  • Determining the Optimum Frequency
  • Selecting Instrumentation
  • Selecting a Test Coil
  • Calibrating a Reference Standard

Selection of Equipment

  • Overview
  • Alternating Current Wave Forms Used in Eddy Current
  • Coil Types
  • Analysis of Eddy Current Indications

MAGNETIC PARTICLE TESTING
Overview of Magnetic Particle

  • What is Magnetic Particle Testing?
  • Applications for Magnetic Particle Testing
  • Advantages for Magnetic Particle Testing
  • Disadvantages for Magnetic Particle Testing

Elementary Principles

  • Electricity & Magnetism
  • Theory of Magnetism
  • Magnetic Characteristics
  • Magnetic Properties of Materials

Application of Magnetic Particle Testing

  • Preparation of the Test Surface
  • Magnetization of the Test Article
  • Application of the Magnetic Particle
  • Inspection & Interpreting Indications
  • Demagnetization of the Parts

Interpretation

  • Discontinuities & Defects
  • Discontinuities & Nonrelevant Indications
  • Cracks
  • Laps
  • Seams & Stringers
  • Inclusions
  • Pipes & Cavities
  • Segregations
  • Nonrelevant Indications

ADVANCED TECHNIQUES

Lesson is designed to introduce personnel to three of the newest NDI inspection techniques and how each technique is applied as well as the associated advantages & disadvantages.
  • Laser Shearography
  • Infrared Thermography
  • Laser Ultrasound