| 1. | Rupture failure analysis of marine diesel exhaust valve spindle
型排气阀早期失效分析 |
| 2. | Early failure period
早期失效期 |
| 3. | The premature invalidation of titanium and its alloys may mainly be resulted from hydrogen embrittlement
摘要氢脆是钛及其合金使用过程中的主要早期失效损伤原因之一。 |
| 4. | There are pitting erosion and fatigue effect on the working surface of the rolling hearing because of the chemical and physical reasons , which may cause the advanced failure in bearings
针对轴承早期失效点腐蚀及疲劳，从材料本身的质量及轴承的工作条件，分析了轴承点腐蚀及疲劳失效发生及发展的原理。 |
| 5. | Finally , the paper studied the dynamic characteristics of 2 . 6x13m mill system . mill system of single - pinion drives is lighten , so the design and run of mill system , bestir frequency must avoid inhesion
边缘传动磨机系统是一个模态偶合较紧的系统，因此，在磨机系统的设计、运行中，应注意使激励频率避开系统的固有频率，以免发生设备的早期失效。 |
| 6. | Active devices control the failure characteristic of gaas mmic ， the passive devices are very significant in the sense that they are responsible for the early failure of the circuits , but it can be eliminate by improve the technology or by screening
有源元件控制着gaasmmic的失效特征，但在早期失效中，无源元件的失效起主要作用，可通过改进工艺和工艺筛选加以剔除。 |
| 7. | To prevent premature failure of the reinforced plastic fiberglass sucker rod , high quality products should be purchased , proper wells should be selected , the rod string design should be based on the stress range chart and operation and management should be carried out according to requirements
为防止玻璃钢抽油杆早期失效，应严把产品进货质量关；正确选择油井；按应力范围图进行玻璃钢杆柱设计；按要求作业施工；完善生产管理措施。 |
| 8. | The existence of original flaw leading to early destroying of structure could not be predicted by traditional fatigue designing method of steel structure of crane . so it was inevitable that the cranes that were designed according to this method had hidden dangers . many great steel - making plants were worrying about the serving cranes that were bought in the 70 ' s
由于起重机钢结构中初始裂纹的存在而导致的结构早期失效用传统的起重机钢结构疲劳设计方法是无法预测的，因此这种按传统方法设计出的起重机就难免会存在一些事故隐患，我国大型钢铁企业在七十年代购买并使用至今的大批起重机都有此顾虑。 |
| 9. | By analyzing the structural importance of the coiled tubing fault tree , it is indicated that , misoperation , corrosion , cyclic deflection and inner pressure are the main factors causing the premature failure of coiled tubings , and the quality and property of material are the vital factors effecting the reliability of coiled tubings
通过对连续油管故障树结构重要度的分析，指出了除人为操作失误外，腐蚀破坏、循环弯曲、内部压力是导致连续油管早期失效的主要原因，材料和性能质量是影响连续油管可靠性的重要因素。 |
| 10. | For the bus - shackle structure near the early failure spot , this thesis established the real 3d full - scale mockup , and spliced it in the bus body frame model founded by the unique board - shell elements to calculate the local stress distribution and the stress concentration , using it to carry on the comparison with the obtained result of the simplified mechanic model
对于早期失效部位附近的吊耳结构，建立了真实的三维实体模型而且将其拼接到全板壳单元的客车车身骨架模型上进行局部应力分布与集中计算，并将其与采用简化力学模型的计算结果进行了比较。 |
