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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 18: Extrusion"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 18.1: Extrusion_Process.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Example 18.1\n",
+"//Extrusion Process\n",
+"//Page No. 629\n",
+"clc;clear;close;\n",
+"\n",
+"Db=6;                    //in inches\n",
+"Df=2;                    //in inches\n",
+"L=15;                    //in inches\n",
+"v=2;                    //in inches/s\n",
+"alpha=60;                    //in degrees\n",
+"mu=0.1;                    //no unit\n",
+"R=Db^2/Df^2;\n",
+"e=6*v*log(R)/Db\n",
+"sigma=200*e^0.15;\n",
+"B=mu*cotd(alpha);\n",
+"p_d=sigma*((1+B)/B)*(1-R^B);\n",
+"p_d=abs(p_d);\n",
+"t_i=sigma/sqrt(3);\n",
+"p_e=p_d+4*t_i*L/Db;\n",
+"p_e=p_e*145.0377;                    //conversion to psi\n",
+"A=%pi*Db^2/4;\n",
+"P=p_e*A;\n",
+"P=P*0.000453;                      //conversion to metric tons\n",
+"printf('\nForce required for the Operation = %g metric tons\n\n\nNote: Slight calculation errors in book',P);"
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}