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ASNT Level 3 Basic Materials & Processes Questions and Answers 2024
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ASNT Level 3 Basic Materials & Processes
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ASNT Level 3 Basic Materials & ProcessesFracture 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 .
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.
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.
The term body-centered cubic BCC, face-centered cubic FCC and hexagonal close-
packed HCP all refer to the: - answer Lattice structures that make up unit cells in a solid metallic structure.
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