ASNT Level 3 Basic Materials & Processes Questions and Answers 2023

ASNT Level 3 Basic Materials & Processes Questions and Answers 2023 Fracture is a type of material failure. Of the following which is another type of material failure? Permanent deformation. Which of the following statements best differentiates between a defect and a discontinuity? Discontinuities can propagate and become defects. Nondestructive testing is often differentiated from other measurements or inspection techniques in that: NDT involves indirect tests related to some other quality or characteristic of material. What are the functions of NDT? 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: 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: 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: 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: Engineering materials. Material properties, as used in design, are most frequently determined by: Materials testing. Even at the early stages of product planning, NDT should be considered because: 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? Chemical properties. Which of the following is true relative to the comparison of the properties of aluminum-based alloys and iron-based alloys? 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: 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? 18000 psi. What is Point B on the Stress-Strain diagram where it first starts to curve? 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? 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: Less ductile. The modules of elasticity, or Young's modules, is related to the material's relative: Stiffness and yield strength. Which of the following materials is typically considered when the application only requires high compressive strength? Cast iron. A fatigue failure can often be prevented by using NDT to: 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? Charpy test. What is a S-N curve? An endurance limit curve diagram. Direct hardness test provide a measure of a material's ability to resist: Surface and near-surface penetration. Under ordinary usage, metals exist as: Crystalline solids. The term body-centered cubic BCC, face-centered cubic FCC and hexagonal close-packed HCP all refer to the: Lattice structures that make up unit cells in a solid metallic structure. The process of returning ductility to cold-worked low-carbon steel is called: Recrystallization. Many metals exhibit an increase in strength caused by plastic flow beyond the elastic limit. This effect is called: Work hardening.