ASNT LEVEL 3 BASIC MATERIALS & PROCESSES WITH 170+ QUESTIONS & CORRECT ANSWERS
LATEST 2025
Fracture is a type of material failure. Of the following which is another type of material failure? - ANSWER-Permanent deformation.
Which of the following statements best differentiates between a defect and a discontinuity? - ANSWER-Discontinuities can propagate and become defects.
Nondestructive testing is often differentiated from other measurements or
inspection techniques in that: - ANSWER-NDT involves indirect tests related to
some other quality or characteristic of material.
What are the functions of NDT? - ANSWER-Identifying and sorting of material.Identifying of material properties.Ensuring absence of faults or defects that could cause a part to fail.
An important basis for the success of fracture control design procedures is: -
ANSWER-The need to ensure that unexpected flaws of some critical size are not present when the component enters service.
If properly used, NDT can assist in fracture control by: - ANSWER-Providing an
accurate evaluation of the number and type of discontinuities that exist in a material .
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A statement that a particular experiment produced a 0.9 probability of detection
with a 95% confidence level means that: - ANSWER-There is a 5% probability
that the probability of detection is overstated.
Most solid metals and plastics that have reasonable strength at room temperature
are called: - ANSWER-Engineering materials.
Material properties, as used in design, are most frequently determined by: -
ANSWER-Materials testing.
Even at the early stages of product planning, NDT should be considered because: - ANSWER-The design of the part should permit easy access to critical areas for later inspection.
which of the following material properties are of most concern if corrosion resistance is essential? - ANSWER-Chemical properties.
Which of the following is true relative to the comparison of the properties of aluminum-based alloys and iron-based alloys? - ANSWER-Iron can exist in several different crystalline structures and its properties can be controlled by heat treatment.
Tensile test are conducted on specimens from a newly developed alloy in order to determine the ultimate tensile strength of the material. Such tests are referred to as:
- ANSWER-Destructive tests.
A bar that is 2 in. long, 2 in. wide and 1 in. thick is subjected to a tensile load acting along the lenght of the bar of 36000 lbs. What is the tensle stress within the bar? - ANSWER-18000 psi.
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What is Point B on the Stress-Strain diagram where it first starts to curve? - ANSWER-Elastic limit.
Stress-Strain diagram, which of the following ranges indicates the affect of work hardening, to its maximum, caused by plastic flow of the material during a tensile load? - ANSWER-Deformation rate to the ultimate strength
On the Stress-Strain diagram, the points represented by E and F would be closer
together if the material being tested were: - ANSWER-Less ductile.
The modules of elasticity, or Young's modules, is related to the material's relative:
- ANSWER-Stiffness and yield strength.
Which of the following materials is typically considered when the application only requires high compressive strength? - ANSWER-Cast iron.
A fatigue failure can often be prevented by using NDT to: - ANSWER-Detect
surface discontinuities that could be stress risers.
Which of the following tests uses a pendulum to break a specimen that is notched and supported on both ends, with the results of measuring energy absorption? - ANSWER-Charpy test.
What is a S-N curve? - ANSWER-An endurance limit curve diagram.
Direct hardness test provide a measure of a material's ability to resist: - ANSWER- Surface and near-surface penetration.
Under ordinary usage, metals exist as: - ANSWER-Crystalline solids.
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