龙门式起重机金属材料的疲劳强度预测

中文翻译
龙门式起重机金属材料的疲劳强度预测(中文5100字,英文3400字)
摘要
内在的疲劳曲线应用到龙门式起重机金属材料的疲劳寿命预测问题。起重机，用于在森林工业中，在伐木林场对各种不同的工作条件进行研究，并且做出相应的应变测量。对载重的循环周期进行计算，下雨循环计数技术得到了使用。在一年内这些起重机运作的样本被观察为了得到运作周期的平均数。疲劳失效分析表明，一些元件的故障是自然的系统因素，并且不能被一些随意的原因所解释。1999年Elsevier公司科学有限公司。保留所有权利。
关键词：起重机;疲劳评估;应变测量

外文资料翻译及原文
英文原文：
Fatigue life prediction of the metalwork of a travelling gantry
crane
Abstract
Intrinsic fatigue curves are applied to a fatigue life prediction problem of the metalwork of a traveling gantry crane. A crane, used in the forest industry, was studied in working conditions at a log yard, an strain measurements were made. For the calculations of the number of loading cycles, the rain flow cycle counting technique is used. The operations of a sample of such cranes were observed for a year for the average number of operation cycles to be obtained. The fatigue failure analysis has shown that failures some elements are systematic in nature and cannot be explained by random causes.卯1999 Elsevier Science Ltd. All rights reserved.
Key words: Cranes; Fatigue assessment; Strain gauging