Mat Sel Final exam 04

Mat Sel Final exam 04 - 530.352 Final Exam 2004 MATERIALS...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
530.352 Final Exam 2004 MATERIALS SELECTION FALL SEMESTER 530.352 PROF. K.J. HEMKER December 14, 2004 FINAL EXAMINATION (Closed book - closed notes - open mind) Ethics statement: Johns Hopkins University believes strongly that every member of its community should hold the highest standard of integrity for their work and avoid academic dishonesty. As a Hopkins student you must take this test without receiving assistance from anyone else and without the help of any document (no notes, no books, no looking at your neighbor’s exam) . By signing below you are certifying that you will do your own work on this test and will not receive assistance from another person or other documents. Name: _______________________________ _______________________________ (print) (sign) 1. These questions are intended to demonstrate the broad understanding that you have about material properties and from where they come. Circle the following choices that make these statements true. (2 pts ea. / 40 pts total) i) The density of silicon carbide is [less than ; about the same as ; greater than ] the density of steel? ii) The modulus of nylon is [less than ; about the same as ; greater than ] the modulus of 6061-T6 aluminum? iii) Which of the following crystal structures have the highest packing factor [simple cubic ; body centered cubic ; face centered cubic ]? iv) Is the [-111] direction in the (110) plane? [ Yes ; No ] v) The tensile strength of silica glass (quartz) is [less than ; the same as ; greater than ] its compressive strength? vi) The tensile strength of a carbon fiber reinforced epoxy composite is [less than ; the same as ; greater than ] its compressive strength? vii) For a precipitation strengthened alloy with a fixed volume fraction of precipitates does increasing the size of the precipitates [ increase ; decrease ; not affect ] the strength of the alloy? 1 / 12
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
530.352 Final Exam 2004 viii) When considering the effect of grain size on the yield strength of a crystalline metal, would larger grains lead to an [ increase ; decrease ] in strength? ix) When considering the effect of grain size on the creep strength of a crystalline metal, would larger grains lead to an [ increase ; decrease ] in strength? x)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 12

Mat Sel Final exam 04 - 530.352 Final Exam 2004 MATERIALS...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online