This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Fractures in Ceramics”.
MCQs based on Fractures in Ceramics:
1. Which of the point is there in a stress strain curve for a ceramic?
a) Ultimate tensile strength
b) Fracture point
c) Limit of proportionality
d) Yield point
2. Which of the following is correct
a) Aluminum oxide reaches fracture point before glass
b) Aluminum oxide reaches fracture point after glass
c) Aluminum oxide reaches fracture point at the same time as glass
d) They do not reach a fracture point
3. Which of the following is a flexural strength not dependent on?
a) Force
b) Distance between supports
c) Specimen width
d) Length of specimen
4. For edge flaws to occur which of the following should be the value of constant in stress intensity factor formula?
a) 1.1
b) 1.2
c) 1.02
d) 1.12
5. Which of the following can be the tensile strength of fused silica (SiO2)?
a) 110 MPa
b) 150 Mpa
c) 90 MPa
d) 80 MPa
6. For zircon for the same flaw size, the intensity factor is more than alumina.
a) True
b) False
7. The largest constituent elements and flaws increase the flexural strength.
a) True
b) False
8. Which of the following shows the best fracture strength?
a) Zircon
b) Macor
c) Alumina
d) There fracture strength are not comparable