Jennifer Weiser

Assistant Professor of Chemical Engineering

Engineering Education - Supplemental Information > CEE 2021 - APPENDIX A - CERAMIC TOUGHNESS PRE/POST-TEST ASSESSME

Teaching Principles of Biomaterials to Undergraduate Students During the COVID-19 Pandemic with At-Home Inquiry-Based Learning Laboratory Experiments

  1.  Below which point does brittle fracture occur?
    1. Ultimate tensile strength
    2. Fracture point
    3. Elastic limit
    4. Yield point


  1. Brittle materials typically fail fast and with excessive plastic deformation
    1. True
    2. False


  1. Which of the following properties is impact strength indicative of?
    1. Elasticity
    2. Hardness
    3. Stiffness
    4. Toughness


  1. Which of the statements is true?
    1. Energy consumed is less in ductile fracture than brittle fracture
    2. Energy consumed is more in ductile fracture than brittle fracture
    3. Energy consumed is same in brittle fracture than ductile fracture


  1. Increasing water content with a ceramic solution prior to setting will:
    1. Increase toughness by decreasing porosity
    2. Increase toughness by increasing porosity
    3. Decrease toughness by decreasing porosity
    4. Decreasing toughness by increasing porosity


  1. You wish to design a ceramic for a bone replacement. The best plan is to: 
    1. Subject it to different forces and see how it responds
    2. Choose a maximum value for toughness and manipulate the ceramic structure until you reach that value
    3. Subject it to different forces and compare its response to bone. Keep manipulating its structure until you achieve a similar response to bone.
    4. Ensure you have designed your ceramic to achieve maximum compressive strength you feel you can, this way you are fairly confident it will not rupture under acute loading.