1 files changed, 200 insertions, 0 deletions
diff --git a/Materials_Science/Chapter09.ipynb b/Materials_Science/Chapter09.ipynb
new file mode 100755
index 00000000..f9450a23
--- /dev/null
+++ b/Materials_Science/Chapter09.ipynb
@@ -0,0 +1,200 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:8681b8cb87a35e316321fbab8aecdb38b5b347586e7dea8acd0d04d98e829c88"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter09:Fracture of Metals"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex9.1:pg-200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Example 9.1 : difference\n",
+      "import math \n",
+      "#given data :\n",
+      "E=200*10**9; # in N/m**2\n",
+      "C=(4*10**-6)/2;# in m\n",
+      "gama=1.48; # in J/m**2\n",
+      "sigma=math.sqrt((2*E*gama)/(math.pi*C));\n",
+      "print round(sigma*10**-6),\"= fracture strength,sigma(MN/m**2) \"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "307.0 = fracture strength,sigma(MN/m**2) \n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex9.2:pg-200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Example 9.2 : the fracture strength and compare\n",
+      " \n",
+      "import math\n",
+      "#given data :\n",
+      "E=70*10**9; # in N/m**2\n",
+      "C=(4.2*10**-6)/2;# in m\n",
+      "gama=1.1; # in J/m**2\n",
+      "sigma=math.sqrt((2*E*gama)/(math.pi*C));\n",
+      "print sigma,\"= fracture strength,sigma(N/m**2)  \"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "152783261.475 = fracture strength,sigma(N/m**2)  \n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex9.3:pg-200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Example 9.3 : maximum length of surface\n",
+      "import math\n",
+      "\n",
+      "#given data :\n",
+      "sigma=36;#in MN/m**2\n",
+      "gama=0.27;# in J/m**2\n",
+      "E=70*10**9;#in N/m**2\n",
+      "C=((2*E*gama)/(sigma**2*math.pi))*10**-6;\n",
+      "C2=2*C;\n",
+      "print round(C2,3),\"= maximum length of surface flow,C2(micro-m)   \"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "18.568 = maximum length of surface flow,C2(micro-m)   \n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex9.4a:pg-203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Example 9.4.a: Temperature\n",
+      " \n",
+      "import math\n",
+      "E=350;# in GN/m**2\n",
+      "Y=2;# in J/m**2\n",
+      "C=2;# in micro meter\n",
+      "sg=math.sqrt((2*E*10**9*Y)/(math.pi*C*10**-6));# IN mn/M**2\n",
+      "e=10**-2;# per second\n",
+      "T=173600/(round(sg*10**-6)-20.6-61.3*(math.log10(e)));# in kelvin\n",
+      "print round(T,1),\"= temperature in kelvin for ductile to brittle transition at a strain rate of 10**-2 per second\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "302.4 = temperature in kelvin for ductile to brittle transition at a strain rate of 10**-2 per second\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex9.4b:pg-203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Example 9.4.b: Temperature\n",
+      "import math\n",
+      "\n",
+      "E=350;# in GN/m**2\n",
+      "Y=2;# in J/m**2\n",
+      "C=2;# in micro meter\n",
+      "sg=math.sqrt((2*E*10**9*Y)/(math.pi*C*10**-6));# IN mn/M**2\n",
+      "e=10**-5;# per second\n",
+      "T=173600/(round(sg*10**-6)-20.6-61.3*(math.log10(e)));# in kelvin\n",
+      "print round(T),\"= temperature in kelvin for ductile to brittle transition at a strain rate of 10**-5 per second\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "229.0 = temperature in kelvin for ductile to brittle transition at a strain rate of 10**-5 per second\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file