Homework problems due next Friday 3/19 are as follows:
from chapter 5 problems 36,  57, 58, 64 and 67 plus the 
following extra problem E1:

E1) A piece of steel with ultimate tensile strength 200 K psi 
      is subject to the following standard indentation hardness 
      tests: 

      a) Brinell test with 3000 Kg load.
      b) Knoop test with 500 gram load.
      c) Vickers (DPH) test with 500 gram load.
      d) Rockwell C test with 150 Kg load.

      In each case calculate the expected diameter or depth 
      of indentation, which ever is appropriate, in units of  mm .  
      Refer to the class web page for hardness conversion tables 
      and related reference information.  Be especially careful 
      with the units.  

Note that Table 5.2 in the text contains an error.  In the formula 
Rc = 100-500f  for the Rockwell C test, the letter  f  should be 
replaced with  t  which is the depth of indentation in mm as 
shown in the diagram in that same table.