Phased Array (PA) Level 2

Phased Array is an advanced pulse-echo technique that utilizes multiple miniaturized transducers and time-delays to shape the ultrasonic sound beam to a desired angle and focus. The versatility of the system permits simultaneous views of different presentations, such as sectoral views as well as A Scan, B-Scan C-Scan representations In comparison with manual pulse-echo techniques, the advantages of Phased Array testing are its excellent repeatability, increased inspection speed, more accurate results and the ability to inspect complex geometries and to visualize indications in welds and/or base materials using B, C, D and S scans (with all A-scans included). Moreover, Phased Array allows the digital storage of all data, location and system settings, and is very much safer to operate within a working environment, compared with Non-Destructive Testing methods that use X-rays and gamma-rays for detecting imperfection

This course follows the British Institute of NDT & ASNT - Level II Phased Array syllabus and is designed to take the experienced NDT technician though the fundamentals of Phased Arrays, including Principles, Digitization and History of Phases Arrays, supported by a series of lab applications that will have the end user proficient with the Phased Array process, encoding scans, compiling groups and basic interpretation.

We can provide Phased Array Training courses and examinations suitable for the following certification scheme.

  • SNT-TC-1A in accordance with your/our company written practice

An example of the syllabus that is used for Phased Array training courses is shown below for Level 2. Decibel can tailor make the syllabus to satisfy the requirements of an individual’s company specific written practice if requested.

Key Syllabus Topics - Level II

1. Principles of phased array probes

  • Array of piezo electric elements
  • Delays
  • Control of beam shape and angle
  • Laws
  • Fundamental principles of probe performance and design

2. Principles of inspection sensitivity

  • Reference reflectors
  • Sensitivity to mis-aligned defects

3. Phased Array Instrument

  • Control panel including input and output sockets
  • Block diagram of internal circuit modules

4. Scanning with phased array probes

  • Swept beams
  • Linear scans
  • Fixed beam scans
  • Line scans - raster scans

5. Calibration and checks

  • Checking probe elements
  • Beam angles and offsets/index point
  • Beam shape

6. Software for data collection and analysis

  • File structure
  • Basic interface and windows options or panes
  • Status bar
  • Setup parameters
  • Inspection sequence - tabs: sequence and encoder settings
  • UT settings - tabs: acquisition, probe, configuration etc.
  • Data acquisition controls and protocol
  • Acquisition toolbar
  • Online view of data presentation
  • Analysis mode

7. Data acquisition and Interpretation

  • Principles of data collection and interpretation
  • Flaw detection and characterization.
  • Define scanning plans, patterns and parameters
  • Implement inspections, save data and interpret Phased Array images with a view to identifying the position, size and type of the indication

Key Benefits

  • The technician should leave the course with a sound understanding of Phased Arrays
  • The technician will be able to carry out basic operations functions, including calibration, detection and Identification of indications
  • The technician, with dedicated application will be able to apply code compliant examinations to welded components

About Qualification

For PCN: Refer PCN General Requirements Document

For NAS410/EN4179/SNT-TC-1A: According to Written Practice.

For ACCP: Refer ACCP General Requirements Document

Course Duration:

Will vary depends on the type of certification chosen