Localized reduction in an area of a bolt that is under overload conditions is referred to as :
necking down .
The least common location for fastener failure is :
in the midgrip
Discontinuities that are produced during the hot or cold working of the ingot into rod or bar to make studs are called :
primary processing discontinuities
Service induced discontinuities in bolting systems may be produced by :
vibration, over-tensioning, and corrosion.
The fillet weld size is based on the:
length of fillet weld leg.
A convex weld surface :
curves outward
During the solidification of metal , a hole produced due to escaping gases is called a :
blow hole
Weldments might contain
incomplete penetration
A discontinuity typically found in forgings is :
laps
Embrittlement is caused by a physical or chemical change in the metal , is a reduction in :
ductility
electrochemical reaction with its The deterioration of a metal by chemical or environment is called :
Corrosion
The roughest surface finish is indicated by at measurement of :
380 uIN
A basic metallurgical joint configuration that is used for complete joint penetration is called
a butt joint .
The welding process that is sometimes referred to as "stick welding" is :
SMAW
The welding process in which there is a higher degree of probability of entrapping slag is :
SMAW .
Tungsten inclusions are found during :
GTAW .
The portion of base metal that has not been melted but where mechanical properties or microstructure have been altered by the heat of welding is defined as : the heat affected zone .
The difference between discontinuities and defects is that :
a defect is a rejectable discontinuity
The gage that provides measurements of internal misalignment on 76 mm ( 3 in . )
diameter pipe is :
a hi lo welding gage
In a borescope , the image is brought to the eyepiece by :
an objective lens, relay lenses, and an eyepiece lens .
In welding , temperature indicating sticks are used to monitor :
preheat, postheat, and interpass temperatures
To measure the diameter of a 76 mm ( 3 in . ) stud most accurately , use :
a 152 mm 6 in dial caliper
A discontinuity that appears as a series of remelted dots beside a weld , resembling a trail left in striking a match is called
ark strikes .
A protrusion or rollover of weld metal beyond the toe or root is called :
overlap .
Chevrons may occur in :
bar stock .
A discontinuity that is found in bars and forgings , which is caused by the rupture
of metal forged at either too low or too high temperatures , is called :
internal burst
A cause for undercut that occurs during the welding process is called :
excessive voltage, current, and excessive travel speed
When the weld is to be placed on the arrow side of the joint , the weld symbol in the drawing will be :
below the line
The brazing process is commonly defined as a liquid - solid phase joining method
accomplished at a temperature above :
449° C or 890°F
To be acceptable , a concave fillet weld must have an actual leg dimension that is :
longer than the size
The melting and fusing of the filler metal and base metal into a straight continuous weld pass is called a :
stringer bead
A depression on the face of a fillet weld that reduces the cross section of the weld when measured at the depression is called :
insufficient throat
really al When visually examining an arc strike , the inspector should inspect for :
cracks .
Pitting is one type of :
occluded cell corrosion .
Joint profiles of finished welds are controlled by :