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| author | Thomas Stephen Lee | 2015-08-28 16:53:23 +0530 |
|---|---|---|
| committer | Thomas Stephen Lee | 2015-08-28 16:53:23 +0530 |
| commit | 4a1f703f1c1808d390ebf80e80659fe161f69fab (patch) | |
| tree | 31b43ae8895599f2d13cf19395d84164463615d9 /Mechanical_Metallurgy_by_George_E._Dieter/Chapter_13.ipynb | |
| parent | 9d260e6fae7328d816a514130b691fbd0e9ef81d (diff) | |
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diff --git a/Mechanical_Metallurgy_by_George_E._Dieter/Chapter_13.ipynb b/Mechanical_Metallurgy_by_George_E._Dieter/Chapter_13.ipynb new file mode 100755 index 00000000..cc8ad5e6 --- /dev/null +++ b/Mechanical_Metallurgy_by_George_E._Dieter/Chapter_13.ipynb @@ -0,0 +1,181 @@ +{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 13: Creep and Stress Rupture"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {
+ "collapsed": true
+ },
+ "source": [
+ "### Example 13.1, Engineering Creep, Page No. 461"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "\n",
+ "-----------------------------------------------------------\n",
+ "\n",
+ "Temperature\tCreep Strength, psi\tWorking Stress, psi\n",
+ "\n",
+ "------------------------------------------------------------\n",
+ "\n",
+ "1100 F\t\t\t30000\t\t\t10000\n",
+ "\n",
+ "\n",
+ "1500 F\t\t\t4000\t\t\t1333\n",
+ "\n"
+ ]
+ }
+ ],
+ "source": [
+ "\n",
+ "#variable declaration\n",
+ "sf=3;\n",
+ "per=1/1000;\n",
+ "T=[1100, 1500];\n",
+ "C=[30000, 4000]; \n",
+ "W=[0, 0];\n",
+ "#calculation\n",
+ "W[0]=C[0]/sf;\n",
+ "W[1]=C[1]/sf;\n",
+ "\n",
+ "#result\n",
+ "print('\\n-----------------------------------------------------------\\n');\n",
+ "print('Temperature\\tCreep Strength, psi\\tWorking Stress, psi\\n');\n",
+ "print('------------------------------------------------------------');\n",
+ "print('\\n1100 F\\t\\t\\t%i\\t\\t\\t%i\\n')%(C[0],W[0]);\n",
+ "print('\\n1500 F\\t\\t\\t%i\\t\\t\\t%i\\n')%(C[1],W[1]);"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "### Example 13.2, Engineering Creep, Page No. 461"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "\n",
+ "Activation Energy = 157867 cal/mol\n",
+ "\n",
+ "\n",
+ "\n",
+ "Note: Calculation Errors in book\n"
+ ]
+ }
+ ],
+ "source": [
+ "\n",
+ "\n",
+ "from math import log\n",
+ "\n",
+ "#variable declaration\n",
+ "def C(f):\n",
+ " return (f-32)*5/9;\n",
+ "R=1.987;\n",
+ "T2=1300;\n",
+ "T1=1500;\n",
+ "\n",
+ "#calculation\n",
+ "T2=C(T2)+273.15;\n",
+ "T1=C(T1)+273.15;\n",
+ "e2=0.0001;\n",
+ "e1=0.4;\n",
+ "Q=R*log(e1/e2)/(1/T2-1/T1);\n",
+ "\n",
+ "#result\n",
+ "print('\\nActivation Energy = %g cal/mol')%(Q)\n",
+ "print('\\n\\n\\nNote: Calculation Errors in book');"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "### Example 13.3, Prediction of long time properties, Page No. 464"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "\n",
+ "At T = 1200 F, P = 41500\n",
+ "At T = 1600 F, P = 51500\n",
+ "And from the master ploy of Astroploy, corresponding stress required are sigma = 78000 psi and sigma = 11000 psi\n"
+ ]
+ }
+ ],
+ "source": [
+ "\n",
+ "from math import log10\n",
+ "\n",
+ "#variable declaration\n",
+ "t=10**5;\n",
+ "C1=20;\n",
+ "T1=1200;\n",
+ "T2=1600;\n",
+ "\n",
+ "#calculation\n",
+ "P_1200=(T1+460)*(log10(t)+C1);\n",
+ "P_1600=(T2+460)*(log10(t)+C1);\n",
+ "\n",
+ "#result\n",
+ "print('\\nAt T = 1200 F, P = %g\\nAt T = 1600 F, P = %g\\nAnd from the master ploy of Astroploy, corresponding stress required are sigma = 78000 psi and sigma = 11000 psi')%(P_1200,P_1600);"
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 2",
+ "language": "python",
+ "name": "python2"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 2
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython2",
+ "version": "2.7.9"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
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