VISUAL Testing (VT)
Clue: This is the oldest and most basic NDT method.
Answer: What is Visual Inspection (VT)?
Clue: MT can only be used on these types of materials.
Answer: What are ferromagnetic materials?
Clue: PT is mainly used to find this kind of discontinuity.
Answer: What are surface-breaking defects?
Clue: This material is used between the transducer and test surface to help sound travel.
Answer: What is couplant?
Clue: RT commonly uses these two types of radiation.
Clue: RT commonly uses these two types of Answer: What are X-rays and gamma rays?
Clue: A flashlight, mirror, and magnifying glass are common examples of these.
Answer: What are visual inspection tools?
Clue: Iron particles gather at this type of discontinuity.
Answer: What is a leakage field?
Clue: This is the action of penetrant being drawn into a dicontinuity.
Answer: What is capilary action?
Clue: A UT transducer converts electrical energy into high-frequency sound waves (mechanical energy).
Answer: What is the piezoelectric effect?
Clue: Dense materials absorb more radiation and appear this way on film.
Answer: What is lighter?
Clue: This visual inspection tool uses flexible fiber optics to inspect areas that are difficult to access directly.
Answer: What is a fiber borescope?
Clue: This is the process of removing residual magnetism after inspection.
Answer: What is demagnetization?
Clue: This material pulls penetrant back out of flaws to create an indication.
Answer: What is developer?
Clue: This UT display shows signal amplitude versus time.
Answer: What is an A-scan?
Clue: This safety principle means keeping radiation exposure as low as possible to prevent any unnecessary exposure.
Answer: What is ALARA?
Clue: Weld inspectors often look for this surface discontinuity caused by trapped gas.
Answer: What is porosity?
Clue: This type of current flows in one direction and produces deeper penetration.
Answer: What is direct current (DC)?
Clue: Fluorescent penetrant inspections are commonly viewed under this type of light.
Answer: What is ultraviolet (UV-A) light?
Black light is not correct!
Clue: This happens when sound bounces off a flaw and returns to the transducer.
Answer: What is reflection or an echo?
Clue: This is used to verify the quality of a radiograph.
Answer: What is a penetrameter or IQI?
Clue: This type of visual inspection uses cameras or scopes to inspect hard-to-reach areas.
Answer: What is indirect or remote visual testing (RVT)?
Clue: Cracks are easiest to detect when they are oriented this way to the magnetic field.
Answer: What is perpendicular?
Clue: PT cannot be effectively used on this type of material surface.
Answer: What are porous surfaces?
Clue: This term describes UT and RT because they can inspect the internal volume of a material.
Answer: What is volumetric inspection?
Clue: This is what we concider too dark of density on a radiograph caused by excess radiation reaching the film or detector.
Answer: What is 4.0 or darker density?