Enhanced Sensitivity for Critical Surface Flaw Detection
Fluorescent Dye Penetrant Testing (PT) provides the highest sensitivity within the PT family, capable of revealing microscopic surface-breaking defects invisible under normal light. Instead of a colored penetrant, this method uses a fluorescent solution that glows under UV-A illumination, enabling precise detection of cracks, laps, seams, and porosity.
Following cleaning and penetrant dwell time, excess penetrant is removed, and a developer is applied. The inspection is carried out in a darkened area under calibrated UV-A lighting. Any retained penetrant in discontinuities fluoresces brightly (usually yellow-green) against the dark background.
BQCIS performs Fluorescent PT in controlled booths compliant with ASTM E1417, NAS 410, and EN ISO 3452, ensuring repeatable, accurate detection for aerospace, power, and precision manufacturing industries.
Key Fluorescent PT Activities
Key Benefits of Fluorescent PT
Highest Sensitivity
Detects extremely fine cracks, laps, or porosity that may not be visible through standard penetrant or visual methods.
Clear, High-Contrast Indications
Fluorescent indications provide high visibility and contrast under blacklight, reducing interpretation errors and inspector fatigue.
Applicable Across Materials
Suitable for ferrous and non-ferrous metals, ceramics, glass, and other non-porous materials.
Ideal for Critical Components
Preferred in aerospace, automotive, and power generation sectors for safety-critical parts and weldments.
Success Story
Fluorescent PT Reveals Micro-Cracks in Aircraft Component
During overhaul, an aluminum aircraft landing gear component required testing for fatigue-related micro-cracks not visible under standard lighting.
BQCIS conducted Fluorescent PT (Method A – Water Washable) in a darkened booth using calibrated UV-A lamps and controlled dwell times.
Fine fluorescent indications revealed multiple micro-cracks, leading to timely replacement of the component and prevention of potential in-service failure.