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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 14: Brittle Fracture and Impact Testing"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Example 14.1, Stress Corrosion Cracking, Page No. 494"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Estimated Life = 11.5741 days\n",
"\n",
"\n",
"\n",
"---------------------------------\n",
"Stress, MPa\tCrack Length, mm\n",
"---------------------------------\n",
"\n",
"\t500\t\t0.105226\n",
"\n",
"\t300\t\t0.292296\n",
"\n",
"\t100\t\t2.63066\n",
"\n",
"---------------------------------\n"
]
}
],
"source": [
"from math import pi\n",
"\n",
"#variable declaration\n",
"cg=0.01;\n",
"gr=10**-8;\n",
"\n",
"#calculation\n",
"l=cg/(gr*3600*24);\n",
"K_l_SCC=10;\n",
"a_sigma2=K_l_SCC**2/(1.21*pi);\n",
"s=[500,300,100];\n",
"\n",
"#result\n",
"print('\\nEstimated Life = %g days')%(l);\n",
"print('\\n\\n\\n---------------------------------\\nStress, MPa\\tCrack Length, mm\\n---------------------------------\\n');\n",
"for i in range (0,3):\n",
" print('\\t%g\\t\\t%g\\n')%(s[i],a_sigma2*1000/s[i]**2);\n",
"print('---------------------------------');"
]
}
],
"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
}
|
