00:01
Hello students, we have two equations that is 8 -true which is equal to e -0 into 1 plus -epsilon.
00:12
Here e -0 is the engineering stress and epsilon is the true strain and we have epsilon true which is equal to low of 1 plus epsilon 0.
00:31
True value of strain and absalom 0 is the engineering strain value for the given data we have strain equal to 0 .188 and stress equal to 240 megapastal then e true for stress equal to which is equal to 2835 .18 megapascal and each strain true which is equal to log of 1 plus 0 .188 which is equal to 0 .1722.
01:34
For the dataset 2 it is given that engineering strain which is equal to 0 .297 and stress equal to 287 megapascal.
01:54
Similarly, we can find e -true of 2, which is equal to 287 into 1 plus 0 .26, which is equal to 371 .952 megapascal, and epsilon true of data set 2 which is equal to log 1 plus 0 .296 which is equal to 0 .259.
02:28
We have strength -handering equation that is 15 which is equal to k epsilon rise to n that is we can write 285 which is equal to k into 0 .1722 order to n and 371 .752 which is equal to k into 0 .259 hold range to n.
03:08
This market has 1 and this market has 2.
03:12
Solving 192 we get n equal to 0 .65.
03:16
65.
03:19
Now from 1 we can find k as k equal to 894 .17 megapascal.
03:30
Okay.
03:31
Now 4e equal to 0 .230.
03:37
Et equal to lock 1 plus 0 .230 which is equal to 0 .20.
03:48
Then, e -true which is equal to x into 1 plus 0 .230.
03:57
That is x into 1 plus 0 .230 which is equal to 1894 .17 into 0 .27 into 0 .207 all raise to 0 .65.
04:12
From this we can find x which is equal to 261 .15 megapascal...