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Acoustic Emission Level I


  • The objective of the course is to present an overview of Acoustic Testing, identifying the advantages and limitations of this as compared to other methods of Non-destructive Testing.


  Principles of Acoustic Emission Testing

  • Characteristics of acoustic emission
  • Continuous emission
  • Burst emission
  • Emission/signal levels and frequencies
  • Sources of acoustic emission
  • Sources in crystalline materials-introduction
  • Sources in nonmetals-introduction
  • Sources in composites-introduction
  • Other sources
  • Wave propagation-introduction
  • Wave velocity in materials
  • Attenuation
  • Reflections-multiple paths
  • Source input versus signal output
  • Repeated loadings: Kaiser and Felicity effects and Felicity ratio
  • In metals
  • In composites
  • Terminology (refer to acoustic emission glossary, ASTM E1316)




Sensing the Acoustic Emission Wave    

  • Sensors
  • Principles of operation
  • Construction
  • Frequency
  • Sensor attachment
  • Coupling materials
  • Attachment devices



Instrumentation and Signal Processing

  • Cables
  • Coaxial cable
  • Twisted pair cable
  • Noise problems in cables
  • Connectors
  • Signal conditioning
  • Preamplifiers
  • Amplifiers
  • Filters
  • Units of again measurement
  • Signal detection
  • Threshold comparator
  • Units of threshold measurement
  • Sensitivity determined by gain and/or threshold
  • Signal processing
  • Waveform characteristics
  • Discrimination techniques
  • Distribution techniques
  • Source location techniques
  • Single channel location
  • Linear location
  • Planner location
  • Other location techniques


Acoustic emission test systems

  • Single channel systems
  • Multichannel systems
  • Dedicated industrial systems
  • Accessory techniques
  • Audio indicators
  • X-Y and strip chart recording
  • Oscilloscopes


Acoustic Emission Test Techniques

  • Equipment calibration and setup for test
  • Calibration signal generation techniques
  • Calibration procedures
  • Sensor placement
  • Adjustment of equipment controls
  • Discrimination technique adjustments
  • Loading procedures
  • Type of loading
  • Maximum test load
  • Load holds
  • Repeated and programmed loadings
  • Rate of loading
  • Data display
  • Selection of display mode
  • Use and reading of different kinds of display
  • Noise sources and pre-test identification techniques
  • Electromagnetic noise
  • Mechanical noise
  • Precaution against noise
  • Electrical shielding
  • Electronic techniques
  • Prevention of movement
  • Attenuating materials and applications
  • Data interpretation and evaluation: introduction
  • Separating relevant acoustic emission indications from noise
  • Accept/reject techniques and evaluation criteria
  • Reports
  • Purpose
  • Content and structure


Codes, Standards and Procedures

  • Guidetype standards (glossaries, calibration, etc.)
  • Standardized/codified acoustic emission test procedures
  • User-developed test procedures

Who Should Attend


  • The course is designed for anyone who is interested in satisfying the classroom training requirements for Acoustic Testing Level I certifications or who needs a thorough knowledge and practical experience of Acoustic Testing Method.


5 Days

Start Date End Date Country City

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