NDT Test 2025/2026. 100% Verified. 2025/2026.
What is a borescope?
Fiber optical device for inspecting confined spaces.
Where can boroscope be used?
Gearboxes, wingboxes, Engine Turbine Sections
What are some things to look for during weld inspection?
Corrosion, cracks, stresses, impending failure.
What is the ideal penetration for fillet welds and butt welds?
Fillet weld: 25% to 50%, Butt weld: 100%.
What is liquid penetrant inspection (LPI)?
Technique for detecting surface defects using fluorescent liquid.
What materials are most suitable for LPI?
Metals, glass, plastic, and other non-porous structures.
What does LPI not detect?
Subsurface defects.
What is the process for fluorescent penetrant inspection?
Clean, apply penetrating oil, apply non-aqueous developer, use special light to see cracks.
What are the two types of developers used in fluorescent penetrant inspection?
Dry (powder form) and wet (aqueous or non-aqueous).
Where is dry developer typically used?
In larger setups like airline maintenance bases.
Where is wet developer typically used?
In smaller shops and the field.
What is magnetic particle inspection (MPI)?
Technique used on iron alloy parts to detect cracks, splits, voids, inclusions, and seams.
Why is MPI effective on iron alloy parts?
Due to iron's high permeability.
What produces the strongest indication in MPI?
Flaws that are 90 degrees to the magnetic field.
How can circular magnetism be used in MPI?
What is a borescope?
Fiber optical device for inspecting confined spaces.
Where can boroscope be used?
Gearboxes, wingboxes, Engine Turbine Sections
What are some things to look for during weld inspection?
Corrosion, cracks, stresses, impending failure.
What is the ideal penetration for fillet welds and butt welds?
Fillet weld: 25% to 50%, Butt weld: 100%.
What is liquid penetrant inspection (LPI)?
Technique for detecting surface defects using fluorescent liquid.
What materials are most suitable for LPI?
Metals, glass, plastic, and other non-porous structures.
What does LPI not detect?
Subsurface defects.
What is the process for fluorescent penetrant inspection?
Clean, apply penetrating oil, apply non-aqueous developer, use special light to see cracks.
What are the two types of developers used in fluorescent penetrant inspection?
Dry (powder form) and wet (aqueous or non-aqueous).
Where is dry developer typically used?
In larger setups like airline maintenance bases.
Where is wet developer typically used?
In smaller shops and the field.
What is magnetic particle inspection (MPI)?
Technique used on iron alloy parts to detect cracks, splits, voids, inclusions, and seams.
Why is MPI effective on iron alloy parts?
Due to iron's high permeability.
What produces the strongest indication in MPI?
Flaws that are 90 degrees to the magnetic field.
How can circular magnetism be used in MPI?
