Advanced PAUT Inspection Services in Chennai
Advanced multi-element ultrasonic inspection capable of electronic beam steering, sectorial scanning, and high-resolution flaw imaging in Chennai.
Certified Level II inspector performing Phased Array Ultrasonic Testing. LEVEL II / III
Overview of Phased Array Ultrasonic Testing (PAUT)
Detailed testing capabilities provided by NP Technical Services Pvt. Ltd. from our West Tambaram, Chennai facility.
PAUT uses probe arrays with multiple individual piezoelectric elements that are pulsed with computer-controlled time delays (phasing). This allows sweeping the sound beam through angles from 35° to 75° from a single probe position, providing rich 2D/3D sectorial views (S-scan) and encoded flaw sizing.
A multi-element probe pulsed with computerized time delays steers and focuses the ultrasonic beam at multiple angles without moving the probe mechanically. Acoustic reflections from all angles are synthesized in real-time to generate full-cross-section color image displays (A-scan, B-scan, C-scan, and S-scan) recorded alongside positional encoder data.
Certified Technical Execution Across Tamil Nadu
Every Phased Array Ultrasonic Testing assignment is executed adhering to approved written procedures, client inspection test plans (ITP), and certified Level II & Level III oversight.
Phased Array Ultrasonic Testing Techniques Deployed
Calibrated inspection procedures tailored for specific geometries, welded joint configurations, and material alloys.
Sectorial S-Scan Weld Mapping
Angular beam sweeping from 35° to 75° covering complete weld bevel geometry and root pass in a single linear pass.
Encoded Linear Scanning with Flaw Sizing
Position-synchronized optical wheel encoders capturing 100% volumetric data for auditable digital weld records.
Corrosion Mapping & Wall Loss Imaging
High-density 0° PAUT matrix scanning generating color-coded C-scan thickness topographies of vessel shells.
Complex Geometry & Nozzle Joint Scanning
Customized curved wedges and focused focal laws for turbine roots, nozzle saddles, and heavy forgings.
Primary Inspection Applications
Phased Array Ultrasonic Testing is deployed across raw stock, fabricated structures, and operational plant equipment.
- Heavy-wall pressure vessel longitudinal & girth welds
- Clad overlay bonding & stainless weld overlay thickness
- Turbine rotor shafts, generator retaining rings & blade attachments
- High-pressure steam piping & structural offshore jacket nodes
Equipment & Standards Used
All instruments and consumables are verified and calibrated prior to each inspection shift.
- Multi-Channel Portable PAUT Digital Flaw Detectors (32:128 / 64:128)
- 16, 32, and 64-Element High-Resolution PAUT Transducers (2.25 to 10 MHz)
- Calibrated Flat and Curved Rexolite Angle Wedges with Irrigation Ports
- High-Precision Waterproof Optical Wheel Encoders & Scanning Crawlers
Phased Array Ultrasonic Testing FAQs
Common questions regarding phased array ultrasonic testing procedures, technician qualifications, and on-site testing in Chennai.
PAUT generates zero radiation hazards, requires no work stoppage, accurately measures flaw height and depth in 3D, and delivers instantaneous electronic digital records.
Related Non-Destructive Testing Methods
Combine Phased Array Ultrasonic Testing with complementary surface or volumetric testing services for complete quality assurance.
Ultrasonic Testing
Ultrasonic Testing & Thickness Gauging (UT)
High-frequency acoustic wave inspection for detecting internal volumetric flaws, laminar discontinuities, and accurate residual wall thickness measurement in Chennai.
Time of Flight Diffraction
Time of Flight Diffraction (TOFD)
Accurate diffraction-based ultrasonic method for precise vertical flaw sizing and rapid volumetric weld screening in Chennai.
Long Range Ultrasonic Testing
Long Range Ultrasonic Testing (LRUT / Guided Waves)
Screening long pipeline sections from a single test point using low-frequency guided ultrasonic waves to identify corrosion under insulation in Chennai.
Request Phased Array Ultrasonic Testing in Chennai
Submit component drawings, weld specifications, or project turnaround schedules for prompt review by our certified Level II / Level III inspectors.