Industrial Ultrasound Level I

In this course you will learn about the industrial ultrasound method, acquiring technical and practical knowledge for correct calibration of the instruments, as well as the execution of the method in specific tasks. The course meets the hours established in accordance with recommended practice SNT-TC-1A and ANSI/ASNT CP-189, issued by The American Society For Nondestructive Testing (ASNT).

  • Transmit all the theoretical and practical bases of the method, turning these into the foundations in your preparation for level I certification. Likewise, the participant is expected to understand the principles of the method, its advantages and limitations.

  • People who require knowledge of the applications and practical knowledge of the ultrasound inspection method.

  • The course for the Level I ultrasound method is a basic 5-day course, covering 40 hours of organized training and training.

1.-Introduction.

  • Definition of ultrasound.
  • UT History.
  • Applications of ultrasonic energy.
  • Review of basic mathematics.
  • Responsibilities of certification levels.

2.- Basic principles of acoustics.

  • Nature of sound waves.
  • Sound wave generation modes.
  • Speed, frequency and wavelength of sound waves.
  • Attenuation of sound waves.
  • Acoustic impedance.
  • Reflection.
  • Refraction and mode conversion.
  • Snell’s law and critical angles.
  • Fresnel and Fraunhofer effects.

3.- Team.

Basic pulse-echo instrumentation (A-scan, B-scan, C scan and computerized systems).

  • Electronics: time base, pulse generator, receiver and various monitor displays.
  • Control functions.

Standardization.

  • Basic standardization of instruments.
  • Reference blocks (types and use).

Digital thickness instrumentation.

 

Transducer operation and theory.

  • Piezoelectric effect.
  • Types of transducer elements.
  • Frequency (transducer elements – thickness ratios).
  • Near field and far field.
  • Beam opening.
  • Construction, materials and shapes.
  • Types (straight, angle, double, etc.).
  • Beam intensity characteristics.
  • Sensitivity, resolution and damping.
  • Mechanical vibration in the piece.
  • Other types of transducers (EMAT, etc.).

Couplings.

  • Purpose and principles.
  • Materials and their efficiency.

4.- Basic test methods.

  • Contact.
  • Immersion.
  • Air coupling.

5.- Test methods. 

Contact.

  • Go straight.
  • Angular beam.
  • Surface waves.
  • Pulse-echo transmission.
  • Multiple transducer.

Curved surfaces.

  • Flat entry surfaces.
  • Cylindrical and tubular shapes.

6.- Immersion.

  • Transducer in water.
  • Water column, wheels, etc.
  • Submerged test part.
  • Sound beam path – transducer to piece.
  • Focused transducers.
  • Curved surfaces.
  • plate waves.
  • Pulse-echo and direct transmission.

Comparison of contact and immersion methods.

 

7.- Calibration (electronic and functional).

Equipment.

  • Monitor displays (width, sweep, etc.).
  • Registrars.
  • Alarms.
  • Automatic and semi-automatic systems.
  • Electronic distance/amplitude correction.
  • Transducers.

8.- Standardization of the electronics of the equipment.

  • Variable effects.
  • Transmission precision.
  • Standardization requirements.
  • Standardization reflectors.

9.- Normalization of the inspection.

  • Comparison with reference blocks.
  • Pulse-echo variables.
  • Reference for planned tests (straight beam, angle beam, etc.).
  • Transmission factors.
  • Transducer.
  • Couplings.
  • Materials.

10.- Straight beam examination for specific procedures.

  • Parameter selection.
  • Test standards.
  • Evaluation of results.
  • Test reports.

11.- Angle beam examination for specific procedures.

  • Parameter selection.
  • Test standards.
  • Evaluation of results.
  • Test reports.