Chpater 8: Destructive Testing Flashcards
Which property cannot be determined from a tensile test?
Impact Strength
The property that describes the ability of a metal to resist some applied load is:
Strength
The point at which a metals behavior changes from elastic to plastic (onset of performance deformation) is referred to as:
Yield Strength
Which of the following is an expression for a metal’s ductility?
Percent elongation and percent of reduction area
What is the percent elongation of a specimen whose original gauge length was 2 niche and final gauge length was 2.5 inches?
25%
The property of metals that describes their resistance to indentation is called:
Hardness
The type of testing that is used routinely for the qualification of welding procedures and welders is:
Tensile strength, hardness, soundness, impact strength, bend test
Which property can be determined as a result of tensile testing?
Ultimate tensile strength, ductility, percent elongation, and yield strength
The family of hardness test that uses both minor and major load is called:
Rockwell
Which of the following tests are referred to as microhardness test?
Vickers and Knoop
What type of test uses a weighted pendulum that strikes a notched test specimen?
Charpy Impact Test
Of the following, which is one of the most measurable features of metal?
Hardness
Which of the following is not considered a soundness test?
Tensile
The type of testing used to evaluate the type of microstructure present in a metal is called:
Metallographic
A 50 lb Can of welding electrodes weighs approximately how many kg?
22.7 kg
Which two metal properties are directly related for many steels?
Tensile strength and Hardness
What is the wire feed speed that is measured at 175 in/min?
74 mm/s
The property of metals that describes their ability to carry some type of load is:
Strength
For less ductile metals, which method is used to determine the yield strength?
Offset technique
The ability of a metal to absorb energy is called?
Toughness
A weld joint is measured and found to be 345 mm long. How long is that joint in terms of inches?
13.58 inches
Which of the following tests is used to verify the soundness of a weld?
Nick break, fillet break, bend test, radiographic test
With SAW process we achieve a deposition rate of 19.7 kg/h. How many lb/h is this?
43.34 lb/h
Ultimate tensile strength can be determined using which of the following tests?
Tensile
Calculation or percent elongation is determined after measuring the change in:
Length between gauge marks
With the GMAW process we use a wire feed speed of 170 mm/s. How many in/min is this?
401.6 in./min.
With the GTAW process, flow rates are measured at 22 L/min. How many ft cubic/h is this?
46.6 ft cubic/h
Calculation of tensile strength is accomplished by dividing the tensile load by:
Cross-sectional area
The metal property describing its freedom from imperfection is:
Soundness
If a metal exhibits a great deal of elongation prior to falling when a tensile load is applied is said to have high:
Ductility
A specimen approximately 2 inches long with a V-notch machined in the center of one of its sides is used for which of the following tests?
Charpy
Which of the following properties can be determined from a tensile test?
Ultimate tensile strength, yield strength and ductility
