ASNT LEVEL 3 BASIC MATERIALS & PROCESSES QUESTIONS WITH CORRECT ANSWERS|100% verified

ASNT LEVEL 3 BASIC MATERIALS & PROCESSES QUESTIONS WITH CORRECT ANSWERS Fracture is a type of material failure. Of the following which is another type of material failure? CORRECT ANSWER Permanent deformation. Which of the following statements best differentiates between a defect and a discontinuity? CORRECT ANSWER Discontinuities can propagate and become defects. Nondestructive testing is often differentiated from other measurements or inspection techniques in that: CORRECT ANSWER NDT involves indirect tests related to some other quality or characteristic of material. What are the functions of NDT? CORRECT 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: CORRECT 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: CORRECT 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: CORRECT 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: CORRECT ANSWER Engineering materials. Material properties, as used in design, are most frequently determined by: CORRECT ANSWER Materials testing. Even at the early stages of product planning, NDT should be considered because: CORRECT 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? CORRECT ANSWER Chemical properties. Which of the following is true relative to the comparison of the properties of aluminum-based alloys and iron-based alloys? CORRECT 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: CORRECT 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 length of the bar of 36000 lbs. What is the tensle stress within the bar? CORRECT ANSWER 18000 psi. What is Point B on the Stress-Strain diagram where it first starts to curve? CORRECT ANSWER Elastic limit. Stress-Strain diagram, which of the following ranges indicates the effect of work hardening, to its maximum, caused by plastic flow of the material during a tensile load? CORRECT 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: CORRECT ANSWER Less ductile. The modules of elasticity, or Young's modules, is related to the material's relative: CORRECT ANSWER Stiffness and yield strength. Which of the following materials is typically considered when the application only requires high compressive strength? CORRECT ANSWER Cast iron.