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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%" height="26">Autor</th> <th class="thCornerR">Wiadomość</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>loiwtjsf</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/subSilver/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Wysłany: Pon 19:43, 20 Gru 2010<span class="gen"> </span> Temat postu: air jordan shoes cheap Fatigue Properties of QStE3</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">Fatigue Properties of QStE380TM SEW092 <br /> <br /> <br />923 correlation coefficient r = 0.9886 a 1.08 sr fatigue ductility coefficient c fatigue ductility index one by one the correlation coefficient r = 0.9902 0.7599 Therefore, QStE380TMSEW0g2 strain fatigue properties of steel for the Aa/2-919 (2Nf)-o *. . 2. △ ?. / 2-1.08 (2Nf)-o ・. . Aa/2-912 (2e. / 2). * 0. 3.3 crack propagation rate aa / aN CT specimen with W a sample of 50,<a href="http://www.airjordansshoescheapnike.com" target="_blank" class="postlink">air jordan shoes cheap</a>, cutting the length n of a 10mm, sample equipment Instron1343 servo fatigue testing machine, the waveform is sine wave, frequency 20Hz, test process to maintain the stress ratio r = 0.1. Crack length measured using a reading microscope with an accuracy of 0.01mm. Figure 4 shows three samples measured crack growth rate da / dN and stress intensity factor of the relationship between △ K range. The results show that, da / dN and △ K found between the Paris formula, the da / dN-C (△ K). When da / dN ≥ 5 × 10ram / week da / dN of a 1.041 × 10 one. (AK). *. . When da / dN (5 × 10ram / week da / dN of a 3.747 × 10 one. (AK) ・. 7-7.50 Figure 4da/dN and talk of a relationship between the figure Fig.4Relationofda/dNand △ K3.4 Review of applications in engineering fatigue life prediction methods are two types: one is the conventional fatigue design curves based on N, the application of fatigue life estimation cumulative damage theory, this nominal stress method,<a href="http://www.stivaliuggboots.com" target="_blank" class="postlink">ugg milano</a>, the results obtained for the total life; the other for the local Estimation of stress-strain crack initiation life, with the fracture mechanics method for solving crack propagation life,<a href="http://www.stivaliuggboots.com" target="_blank" class="postlink">ugg prezzo</a>, and for the total life of both. Thus the material fatigue properties of SN curves, ~-2N curves and da / dN is the basis for estimating the fatigue life. SN curve with the conventional method for estimating the stress level of the lower life expectancy, longer life expectancy (eg,> 5 × 10), stable load conditions. When the stress level high, the danger point of zero occurrence of yield components, short-lived (eg, cr0.1-335MPa when, N a 6.722 × 10 stare at one percent. (2) obtained from low cycle fatigue test of a life span of the steel strain curves,<a href="http://www.ed-love-ca.com" target="_blank" class="postlink">ed hardy clothing</a>, including a cyclic hardening index 0.1204, cyclic strength coefficient K-912MPa, the fatigue strength index 6 a - 0.0923, 0.7599 fatigue ductility index of C one by one, the fatigue strength coefficient stare a 919MPa,<a href="http://www.airjordansshoescheapnike.com" target="_blank" class="postlink">air jordans</a>, fatigue ductility coefficient sf a 1.08. (3) QStE380TMSEW092 Steel Crack Growth Rate da / dN: When da / dN ≥ 5 × 10ram / week, da / dN of a 2.2364 × 10 one. (AK )。・¨: when da / dN <5 × 10ram / week, da / dN = 1.54147 × 10 A (AK) ・ \. [2] G13/T15248--1994, pieces of metal materials such as low cycle axial fatigue testing [S]. [3] GB3075 - 82, metal axial fatigue testing [S]. [4] GWT6398 - 2000, metal fatigue crack growth rate test method rS]. one thousand one hundred and eleven of a drunken summer pop j 0 Mu <br /> <br />相关的主题文章： <br /> <br /> <br /> <a href="http://www.mumuhong.com/home/space.php?uid=1541&do=blog&id=1788" target="_blank" class="postlink">ugg boots günstig Hot wire method in the cemented</a> <br /> <br /> <a href="http://bbs.cqkzxx.com/?space/94/blog/article-288443" target="_blank" class="postlink">ugg prezzo Membrane oxygen enrichment for combusti</a> <br /> <br /> <a href="http://home.zzstep.com/space.php?uid=129964&do=blog&id=123153" target="_blank" class="postlink">ed hardy clothing City gas pipeline buried steel c</a></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" height="1" class="spaceRow"><img src="http://picsrv.fora.pl/subSilver/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </table>
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