What is NDT?
This acronym stands for a testing method that examines materials without changing their properties.
NDT (Non-Destructive Testing)
This ancient group of engineers is believed to have used flour and oil to detect cracks in marble slabs.
the Romans (Roman engineers)
This is the most basic and common NDT inspection method, relying on the eyes.
Visual Inspection (Visual Testing)
Which of these is NOT one of the main uses of NDT?
A) Flaw detection B) Leak detection C) Painting a surface D) Dimensional measurement
C) Painting a surface
What is "porosity" in a weld?
A) A crack B) Trapped gas pockets C) A magnetic field D) A surface groove
B) Trapped gas pockets
In which term does the technician BOTH perform and analyze the results of the test?
A) NDI B) NDT C) NDE D) None
C) NDE
This scientist's discovery of X-rays in the 1890s led to the first widely recognized NDT method
Wilhelm Conrad Röntgen
Liquid Penetrant Inspection relies on which physical property?
A) Magnetism B) Radiation C) Capillary action D) Electromagnetism
C) Capillary action
Which of these commonly requires weld inspection, according to the material?
A) Bridges B) Pipelines C) Planes D) All of the above
D) All of the above
This discontinuity happens when the weld material doesn't fully bond with the base metal.
Incomplete fusion
NDT allows materials to be examined without changing their:
A) Color B) Physical properties and functionality C) Price D) Location
B) Physical properties and functionality
Which early method used oil and chalk to find cracks in train axles?
A) Magnetic Particle Testing B) The Oil and Whiting Method C) Ultrasonic Testing D) Eddy
B) The Oil and Whiting Method
This method uses iron filings and magnetism to reveal surface and near-surface cracks.
Magnetic Particle Inspection
NDT helps prevent accidents and do what else, according to the material?
A) Save lives B) Increase costs C) Slow production D) Eliminate the need for inspectors
A) Save lives
What does "undercut" refer to? A) A groove cut into the base metal at the edge of a weld B) A type of X-ray C) A sound wave reflection D) A type of crack only found underwater
A) A groove cut into the base metal at the edge of a weld
Which term is used SELECTIVELY in some industries to refer to the process of NDT? A) NDE B) NDI C) NDT
B) NDI
This war in the 1940s significantly accelerated NDT technology due to mass production needs.
World War II
This method uses X-rays or gamma rays to see inside an object's structure.
Radiographic Examination
Which of the following is a benefit of NDT listed in the material?
A) It increases production defects B) It reduces manufacturers' costs C) It requires destroying the part D) It has no effect on product design
B) It reduces manufacturers' costs
Which discontinuity is generally considered one of the most serious?
A) Porosity B) A crack C) Overlap D) Slag
B) A crack
Which best describes NDT? A) Testing that destroys the part to find flaws B) Inspection without doing harm C) A type of welding D) A type of paint
B) Inspection without doing harm
This man patented the "Supersonic Reflectoscope" in 1940, launching Ultrasonic Testing
Dr. Floyd Firestone
Ultrasonic Testing is best suited for finding what kind of flaws?
A) Only surface flaws B) Subsurface (internal) flaws C) Color defects D) Only in ferromagnetic materials
B) Subsurface (internal)
NDT helps maintain uniform levels of what?
A) Pricing B) Quality C) Packaging D) Advertising
B) Quality
Eddy Current Testing is based on which principle?
A) Capillary action B) Radiation C) Electromagnetism D) Sound
C) Electromagnetism