Ultrasonic Testing

Near Field vs Far Field in UT: What Inspectors Must Know

Near field vs far field in UT: N = D²f/4c worked for 0°, angle-beam and rectangular probes, plus delay-line, dual, DAC and weld and rail probe choices.

August 10, 202619 min read

Ultrasonic Testing

False Calls in Rail UT: Critical Causes and Solutions 2026

Find out how False Calls in Rail UT occur, which defects and probes matter, and how reliable UT methods improve rail inspection accuracy.

August 10, 202611 min read

Ultrasonic Testing

Ultrasonic Testing Mistakes & How to Avoid Them in 2026

Learn common ultrasonic testing mistakes in rail inspection and discover how proper calibration, and verification improve flaw detection.

August 10, 20269 min read

Ultrasonic Testing

Surface Wave UT for Rail: Detecting Cracks Others Miss

Learn how surface wave ultrasonic testing detects shallow rail cracks that conventional UT can miss, improving railway safety, and reliability.

August 4, 202610 min read

Ultrasonic Testing

DAC Curve Ultrasonic Testing: Distance Amplitude Correction

How to build a DAC curve to ASME V: 80% FSH reference, no near-field points, 50% and 20% DAC levels, transfer correction, and how TCG, DGS and AWS D1.1 differ.

August 3, 202620 min read

Ultrasonic Testing

Ultrasonic Testing Formulas: Key Formulas & Calculations

Ultrasonic testing formulas with worked steel examples: time of flight, dB, near field, beam spread, Snell's law, skip distance, TOFD depth and AWS attenuation.

July 28, 202619 min read

Ultrasonic Testing

Ultrasonic Testing vs Magnetic Flux Leakage

Ultrasonic testing vs magnetic flux leakage for rail inspection. Compare defect detection, accuracy, costs and material compatibility for safety.

July 14, 202616 min read

Ultrasonic Testing

How to Read Flaw Detectors: Your Essential Field Guide

Learn how to read flaw detectors for quality assurance. Master A-scan displays, calibration, defect identification in non-destructive testing inspections.

July 7, 202614 min read