At Hansen Aerospace, we specialize in providing fluorescent penetrant inspection (FPI) services that ensure the integrity and safety of critical components. We use advanced fluorescent penetrant techniques to detect surface defects that can impact performance and safety.
What is Fluorescent Penetrant Inspection?
A widely used non-destructive testing (NDT) method is fluorescent penetrant inspection (FPI) and is used for detecting surface defects in materials such as plastics, metals and composites.
This method involves applying a fluorescent dye penetrant to the surface of a component, allowing the dye to seep into any surface-breaking defects. After removing the excess dye, a developer is applied, and under ultraviolet (UV) light, the trapped dye within the defects reveals the presence of voids, cracks, or other surface imperfections.

Importance of Fluorescent Penetrant Inspection in Non-Destructive Testing (NDT)
Fluorescent penetrant inspection, also known as FPI inspection, is crucial in industries where material integrity is paramount, helping detect flaws that might otherwise go undetected. Even small defects can lead to catastrophic failures in sectors such as aerospace, automotive, and energy.

Applications of Fluorescent Penetrant Inspection in Industry
FPI Fluorescent penetrant inspection is used across many industries to detect surface defects in critical components and is especially valuable in sectors where high performance and reliability are crucial, for example:
Turbine blades: Detects surface defects that could impact performance and safety.
Pressure vessels: Identifies cracks or other defects that could lead to failures.
Automotive parts: Ensures the integrity of components under high stress and pressure.
Aerospace components: Crucial for identifying defects in critical parts like engine components and turbine blades.

Step-by-Step Guide to Fluorescent Penetrant Inspection
The fluorescent penetrant inspection process involves the following key steps:
- Step One: Clean the surface to remove dirt, grease, and other contaminants.
- Step Two: Apply the penetrant to the component’s surface, allowing it to seep into any surface-breaking defects.
- Step Three: Remove the excess penetrant, leaving the dye in any cracks or voids.
- Step Four: Remove excess moisture and dry part.
- Step Five: Apply a developer to draw the trapped penetrant out of the defects, making them visible under ultraviolet (UV) light.
- Step Six: Inspect the component under UV light, reporting any surface defects.

ASTM-E-1417 Standard for Fluorescent Penetrant Inspection
The ASTM-E-1417 standard outlines the requirements for performing fluorescent penetrant inspection across various industries. At Hansen Aerospace, our expert technicians follow this standard to ensure the process meets the highest quality standards, ensuring safety for critical applications.

Applications of Fluorescent Particle Inspection in Aerospace and Manufacturing
Fluorescent particle inspection, or fluorescent PT, is used in the aerospace and manufacturing industries to inspect components like turbine blades, engines, and other high-performance parts exposed to high-stress conditions.
This method helps ensure the integrity and safety of these critical components, preventing potential failures in demanding applications.

Benefits of Fluorescent Penetrant Inspection
There are numerous benefits offered by fluorescent penetrant inspection, including:
High Sensitivity for Surface Defects
Fluorescent inspection provides high sensitivity for detecting surface-breaking defects that typically go unnoticed by the naked eye.

Cost-Effective and Quick Results
This method of testing is relatively low-cost. It provides rapid results, making it an efficient and quick solution for regular checks and maintenance.
Non-Destructive Nature of Fluorescent Penetrant Inspection
Fluorescent inspection is a non-destructive testing method that ensures components can be inspected without causing damage.

Fluorescent Penetrant Inspection vs Other NDT Methods
Fluorescent Penetrant Inspection vs Magnetic Particle Inspection (MPI)
Both fluorescent penetrant inspection (FPI) and magnetic particle inspection (MPI) are non-destructive testing methods used to detect surface defects. However, FPI can be applied to a wider range of materials, including non-ferrous metals, whereas MPI is typically limited to ferromagnetic materials.

Why Choose Hansen Aerospace?

Availability
We provide 24/7/365 access to our management team and senior executives, ensuring we’re always available to support our customers.

Partnerships
We have a proven ability to grow alongside our customers, proactively assessing their future capacity needs and ensuring a long-term, successful collaboration.

Experience and Expertise
With unmatched ultrasonic testing expertise, we are proud to have the largest concentration of IUT testing capacity for jet engine parts in the world, setting us apart as a leader in the industry.

Service
We are committed to providing exceptional customer service, as consistently praised by our clients. As a US-based NDT house, we strive to exceed expectations with every interaction.

Quality and Trust
Our commitment to quality is unwavering. With 4 decades of excellence, we have consistently passed every audit and maintained all necessary certifications, reinforcing the trust our customers place in us.
Fluorescent Penetrant Inspection FAQs
What does FPI stand for?
FPI stands for fluorescent penetrant inspection, which is a non-destructive testing method used to detect surface-breaking defects in materials.
What does fluorescent penetrant inspection detect?
Fluorescent penetrant inspection detects surface breaking defects such as corrosion, cracks and other imperfections that can affect the strength and integrity of critical components.
What is fluorescent penetrant inspection?
Fluorescent penetrant inspection, or FPI inspection, is a method that uses a fluorescent dye to reveal surface defects in materials under ultraviolet light (UV).