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Phased Array Ultrasonic Testing

Phased Array Ultrasonic Testing
Course Description

The course will cover:
• Phased array probes: different probe types, geometric characteristics, operating characteristics.
• Phased array electronics: architecture, beam forming (time limits, summation, focal laws)
• Focal laws: beam forming.
• Focusing: principles, rules and limitations.
• Beam steering: principles, rules and limitations.
• In-depth dynamic focusing.
In addition, the course will cover electronic scanning, electronic linear scanning, electronic sector scanning. For tutorials, presentation of the user interface of the phased-array ultrasonic equipment, settings and implementation of focal laws for
direct contact testing (focusing and beam steering, linear and sector scanning).

Specifically:
- Use of a relay (water column or rigid relay): beam forming and electronic scanning.
- Inspection in mixed/separate transmit/receive mode.
- Data representation and acquisitions:
· Free-scanning inspection or inspection with mechanical encoding.
· Data representation: A-scan - B-scan, C-scan, S-scan, corrected sector view.
· Acquisition parameters (setting of the Ascan window, acquisition gates, TCG function, acquisition step and increment, dimensions of the acquisition area.)
- Applying the inspection in manual mode on different applications (in direct contact, with relay or by semi-immersion). Parameter setting and result analysis.
- Principles of equipment check before use.
- Presentation of applications in the aeronautical field and in other fields (maintenance and manufacturing).
- Advantages of phased array testing.
- Applying the inspection in manual mode on different application cases (in direct contact, with relay or by semi-immersion). Parameter settings and result analysis.

The following applications will be discussed:
· Fine composite materials - delamination testing after shock.
· Thick composite materials - delamination testing (use of TCG).
· Porosity testing in composite materials.
· Metal materials - check for manufacturing defects such as blowhole.
· Crack testing on the bore lines.
· Corrosion testing.
· Laser weld inspection.
· FSW weld inspection.
· Metal materials and vertical defects - Diffraction signal processing