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97 Cards in this Set
- Front
- Back
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According to NA-01-1A-16, who can perform NDI inspections?
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Certified personnel only
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What type of examination must a candidate receive before selection as an NDI inspector and annually there after?
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eye exam
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What is the minimum amount of experience required from a technician who is currently certified and engaged in NDI in order to train and certify NDI operators?
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3 years
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How often must active NDI technicians recertify?
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3 years
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How often must an NDI technician or operator perform the methods in which they are certified?
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two times a month
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How long must a NDI operator maintain proficiency without being required to update training for recertification?
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6 months
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The original copy of the NDI certification is held by whom?
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the individual
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Who verifies the entries in the work center supervisor's Technicia/Operator work record?
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Quality Assurance(QA)
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What command has cognizance over the NDI program?
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NAVAIR Naval Air Systems Command
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What command provides training for all NADEP's
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NAVAIR Naval Air Systems Command
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Who is responsible for monitoring the NDI program in activities under their cognizance?
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ACC aircraft controlling custodians
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What activity is responsible for ensuring compliance with qualification requirements and enforcing the Industrial Radiation Safety Program (RASP) requirements in accordance with the RASP manual?
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IMA Intermediate maintenance activity
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What division is responsible for monitoring the organization's NDI training program?
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Qaulity Assurance (QA)
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What activity is responsible for requesting NDI inspection on aircraft?
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OMA organizational maintenance activity
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For a magnetic particle inspection to be performed, a part must be made of alloys that contain a high percentage of what material?
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Iron
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When conducting a magnetic particle inspection, the magnetic field is interrupted by what factor?
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Discontinuity
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Which method of magnetization is used to find radial discontinuities around the edges of holes and detect longitudinal discontinuities?
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Circular magnetization
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When you inspect hollow or tubelike parts, it is important to inspect what surface?
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inside surface
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What type of current should be used for the detection of surface discontinuities?
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alternating current (ac)
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To detect subsurface disonctinuities, you would use direct current with what type of magnetic particle inspection?
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wet magnetic particle method
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The particles that are used in magnetic particle inspections have what two characteristics?
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High permeability and low retentivity
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The smallest particles are more easily attracted to and held by what type of discontinuities?
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very fine discontinuities
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Fluorescent particles are widely used in wet baths and are easily seen on dark backgrounds when what type of light is used?
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black light
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What method of inspection is used to detect flaws in areas that are not accessible or favorably oriented for use by other test methods?
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radiation (x-ray)
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X-rays can be a health hazard when improperly used because of what factor?
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they produce radiation
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What method of inspection uses vibration or sound waves?
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ultrasonic inspection
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What inspection method is used to detect discontinuities parallel to the test surface on materials one-half inch thick or greater?
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straight-beam
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What is the best inspection method to use around fastener holes, cylindrical components, and welds?
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angle-beam
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What ultrasonic method is used to detect surface cracks and subsurface discontinuities in field activities?
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surface wave
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Electric currents that are induced in a conductor of electricity by a reaction with a magnetic field are known as what type of currents?
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eddy currents
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What type of coil has the ability to better define the exact location of discontinuities?
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surface coil
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A simple, inexpensive, and reliable method for detecting discontinuities that are open to the surface is known as what type of inspection?
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dye penetrant
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Welding training and testing are conducted at what facilities?
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NADEP naval aviation depot
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What is the recertification interval for IMA-level aeronautical equipment welders if proficiency is maintained?
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3 years
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If you fail the first test weld(s), what amount of time do you have to submit the retest welds after notification of failure?
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30 days
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What are the two main purposes of the welding torch?
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to properly mix the gasses and direct the flame against the part to be welded
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What is the temperature range of acetylene when mixed with oxygen?
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5,700 to 6,300 degrees F
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What are the three main characteristics of oxygen?
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odorless, colorless, and slightly heavier than air
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If an oxygen bottle has a white band around it, what type of oxygen does it contain?
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breathing oxygen
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What pressure does the low pressure (0 to 500psi) gauge on a single-stage regulator indicate
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working pressure
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Acetylene is colorless, but has what feature that makes it easily detected?
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a distinct odor
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At what pressure does acetylene become self-explosive?
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29.4 psi
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What is another name for a low-pressure welding torch
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injector
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What color is the acetylene hose on an oxyacetylene welding system?
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red
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The thread fittings for the oxygen hose hookup of an oxyacetylene welding system always have what type of threads?
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right-handed threads
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Regardless of the shade of your welding goggles lens they should be protected by what type of material?
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clear cover glass
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Bronze and aluminum welding rods are examples of what type of welding rods?
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nonferrous
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What type of flame has three distinct zones and is used to weld nickel alloys?
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carburizing flame
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What type of flame has a small, white pointed cone in the inner zone with a purple tinge and is used to fuse brass and bronze?
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oxidizing flame
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An overheated welding tip, accompanied by a popping sound, indicates what action has occurred?
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backfire
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Define the term "flashback" as it applies to a welding torch.
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flashback is the burning of gases within the torch
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When the torch is held properly, the tip should be in line with what structure?
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the joint to be welded
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What welding technique is the best method for welding lighter metals?
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forehand method
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Tee and lap joints are classified as what type of welds?
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fillet welds
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Corner and butt joints are classified as what type of welds?
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groove welds
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What type of joint is formed when two pieces of metal are placed edge-to-edge with no overlap and welded together?
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butt joint
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What type of joint is formed when two pieces of metal are welded approximately perpendicular to each other?
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tee joint
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What type of joint is formed by welding two overlapping metals together?
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lap joint
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What type of joint is formed when two or more parallel or nearly parallel pieces of metal are welded together?
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edge joint
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What type of electrode is used in GTA welding because of its ability to resist high temperatures?
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tungsten alloy
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DC reverse polarity in a welding machine causes a greater concentration of heat in what location?
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at the electrode
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Directional and distributional control of the shielding gas is provided by what component?
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gas cups
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What is the most common type of shielding gas used in the tungsten-arc welding process?
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argon
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When striking an arc, you should hold the electrode what distance above the work piece?
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1/8 inch
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The process that uses a consumable wire electrode is known as what type of welding?
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gas metal arc (GMA)
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What determines the melting rate of the filler wire?
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current level
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When you use the GMA welding method to weld aluminum, what is the preferred shielding gas?
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helium
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When you use the GMA welding method, why should you pull the gun back quickly when contact is made between the electrode and the work piece?
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to prevent sticking
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If you hear a loud crackling sound while you are GMA welding what direction should you move the wire-feed speed dial to correct this?
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counterclockwise
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When using GMA welding equipment, where should you attach the ground connection?
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ensure it is firmly attached to the work piece
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When GMA welding equipment is not in use, what should you do to the power source?
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completely disconnect it
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What is the only metal that cannot be hardened by heat-treatment?
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pure metal
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Uneven heating of metal often causes what actions to occur?
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distortion and cracking
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The slow heating of metal ensures what condition?
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uniformity
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The heating rate for hardened tools and parts should be slower than metals that are in what condition?
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not in a stressed condition
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What is the process of holding a metal at a temperature until it is heated throughout and changes have had time to take place?
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soaking
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How can you reduce the distortion and cracking of metal?
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preheating
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The process for rapidly colling heated metal is known by what term?
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quenching
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Alloy steels are generally hardened by cooling with what substance?
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oil
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The form of heat-treatment used to reduce residual stresses, induce softness, and alter ductility is known by what term?
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annealing
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The process in which an iron-based metal is allowed to cool at room temperature, in still air, after being heated to approximately 100 F is known by what term?
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normalizing
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The process of quenching a metal after it is heated to a temperature slightly above the critical temperature is know by what term?
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hardening
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The process by which steel is heated to just below critical and held there for a period of time, and then cooled with oil, water, or brine is known by what term?
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tempering
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What is the process of producing a hard case over a tough core known as?
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case hardening
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The process of hardening steel by introducing carbon to the heated metal is known by what term?
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carburizing
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The process of hardening alloy steel by holding it at temperatures below the critical point in anhydrous ammonia is known by what term?
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nitriding
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The carbon in steel, which exists as particles of iron carbide, scattered throughout the iron mixture is known by what term?
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ferrite
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If the cooling is slow, the carbon particles are relatively course and few. In what condition will this leave the steel?
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a soft condition
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Before steel can be hardened completely, it must be heated to a certain point, before it is rapidly quenched. What is this point called?
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upper critical point
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If you don't have an instrument to determine the temperature of steel being heated, you can judge it by what factor?
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its color
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What term describes an aluminum alloy with a protective coating of aluminum?
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alclad
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What increases artificially aged alloys' resistance to corrosion?
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they are slightly overaged
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What is the recommended time interval between removal from the heat and immersion during the quenching process?
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10 seconds or less
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Small aluminum parts are normally quenched in what substance to ensure good resistance to corrosion?
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cold water
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What quenching method is used to quench large forgings to prevent cracking and minimize distortions?
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hot water
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The process of removing the effects of heat-treatment in alloys is referred to by what term?
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annealing
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It takes a 2-hour soak at 750 to 800 F followed by a maximum cooling rate of 50 per hour to 500 F to remove the effects of a partial or full heat-treatment and obtain what condition?
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maximum softness
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