Chpater 8: Destructive Testing

Question 1

Which property cannot be determined from a tensile test?

Answer 1

Impact Strength

Question 2

The property that describes the ability of a metal to resist some applied load is:

Answer 2

Strength

Question 3

The point at which a metals behavior changes from elastic to plastic (onset of performance deformation) is referred to as:

Answer 3

Yield Strength

Question 4

Which of the following is an expression for a metal’s ductility?

Answer 4

Percent elongation and percent of reduction area

Question 5

What is the percent elongation of a specimen whose original gauge length was 2 niche and final gauge length was 2.5 inches?

Answer 5

25%

Question 6

The property of metals that describes their resistance to indentation is called:

Answer 6

Hardness

Question 7

The type of testing that is used routinely for the qualification of welding procedures and welders is:

Answer 7

Tensile strength, hardness, soundness, impact strength, bend test

Question 8

Which property can be determined as a result of tensile testing?

Answer 8

Ultimate tensile strength, ductility, percent elongation, and yield strength

Question 9

The family of hardness test that uses both minor and major load is called:

Answer 9

Rockwell

Question 10

Which of the following tests are referred to as microhardness test?

Answer 10

Vickers and Knoop

Question 11

What type of test uses a weighted pendulum that strikes a notched test specimen?

Answer 11

Charpy Impact Test

Question 12

Of the following, which is one of the most measurable features of metal?

Answer 12

Hardness

Question 13

Which of the following is not considered a soundness test?

Answer 13

Tensile

Question 14

The type of testing used to evaluate the type of microstructure present in a metal is called:

Answer 14

Metallographic

Question 15

A 50 lb Can of welding electrodes weighs approximately how many kg?

Answer 15

22.7 kg

Question 16

Which two metal properties are directly related for many steels?

Answer 16

Tensile strength and Hardness

Question 17

What is the wire feed speed that is measured at 175 in/min?

Answer 17

74 mm/s

Question 18

The property of metals that describes their ability to carry some type of load is:

Answer 18

Strength

Question 19

For less ductile metals, which method is used to determine the yield strength?

Answer 19

Offset technique

Question 20

The ability of a metal to absorb energy is called?

Answer 20

Toughness

Question 21

A weld joint is measured and found to be 345 mm long. How long is that joint in terms of inches?

Answer 21

13.58 inches

Question 22

Which of the following tests is used to verify the soundness of a weld?

Answer 22

Nick break, fillet break, bend test, radiographic test

Question 23

With SAW process we achieve a deposition rate of 19.7 kg/h. How many lb/h is this?

Answer 23

43.34 lb/h

Question 24

Ultimate tensile strength can be determined using which of the following tests?

Answer 24

Tensile

Question 25

Calculation or percent elongation is determined after measuring the change in:

Answer 25

Length between gauge marks

Question 26

With the GMAW process we use a wire feed speed of 170 mm/s. How many in/min is this?

Answer 26

401.6 in./min.

Question 27

With the GTAW process, flow rates are measured at 22 L/min. How many ft cubic/h is this?

Answer 27

46.6 ft cubic/h

Question 28

Calculation of tensile strength is accomplished by dividing the tensile load by:

Answer 28

Cross-sectional area

Question 29

The metal property describing its freedom from imperfection is:

Answer 29

Soundness

Question 30

If a metal exhibits a great deal of elongation prior to falling when a tensile load is applied is said to have high:

Answer 30

Ductility

Question 31

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?

Answer 31

Charpy

Question 32

Which of the following properties can be determined from a tensile test?

Answer 32

Ultimate tensile strength, yield strength and ductility