查询词典 fatigue

The invention discloses a rotary bending corrosion fatigue test device. The device includes a rotary bending fatigue test device and a corrosion liquor supplying system; wherein, the rotary bending fatigue test device is used for mounting a test piece and applies bending load on the test piece during the process of driving the test piece to rotate and realizes the test on the fatigue data of the test piece. The corrosion liquor supplying system includes a liquor storage tank, a transfusion pump, a flow adjusting valve and a connecting pipeline. The corrosion liquor supplying system feeds the corrosion liquor to the test piece during testing in real time from an output opening.

本发明公开了一种旋转弯曲腐蚀疲劳实验装置，该装置包括旋转弯曲疲劳实验装置及腐蚀液供给系统，其中，旋转弯曲疲劳实验装置用于试件的装卡，并在驱动试件旋转过程中对其施加弯曲载荷，以及实现对试件疲劳数据的测试；腐蚀液供给系统包括储液罐、输液泵、流量调节阀及连接管道，腐蚀液供给系统通过其输出口实时向测试中的试件输送腐蚀液。

The Zhanjiang Bay Bridge applies the Cable-girder anchorage with tensile anchor plate. Taking the fatigue test for the Zhanjiang Bay Bridge as an instance, the design of fatigue test and the fatigue reliability of the Cable-girder anchorage are studied in this thesis.

本文结合广东湛江海湾大桥锚拉板式索梁锚固结构的疲劳试验，着重讨论了索梁锚固结构的疲劳试验设计，同时分析了该桥索梁锚固结构的疲劳性能。

Based on the previous research on the portal crane administration, one standpoint put forward in this paper is idea that is on the foundation of reliability in this paper, two viewpoints take shape when reason is analyzed, that is fatigue break and appearing the flaw that will extend. What is the fatigue break?(this phenomenon is always happen in some place),the fatigue is that board appears apophysis and concave when the board is pressed .so that the board ability of bearing the weight of load will descend. Second , the board appear the flaw that the flaw extends in the some place of board one reason is that the machine works too long, so the board ability of bearing the weight of load will decline.

本论文建立在已有的港口装卸机械管理的研究基础之上，进一步提出了以可靠性为基础的港口装卸机械的管理思想，已有的研究表明，港口机械设备破坏主要由于两个原因，第一是稳定性问题，特别是构件的局部稳定性，所谓稳定性是指：在板的平面内，板受到平行于板面的压力作用，使板发生隆起、内陷等凹凸不平的结果，从而使板受载能力减弱；第二是结构出现疲劳裂纹及其扩展，这是由于设备长时期运行，而造成设备某些部位出现裂纹并得以扩展，使设备承载能力下降。

Chronic fatigue syndrome is a kind of general syndrome under the contemporary fast tempo mode of live with the serial of chronic fatigue syndromes such as the degression in impermanent memory or attention , pharyngalgia , lymphadenectasis or haphalgesia in cervical part or under armpit ,courbature , multi-articular soreness without red swelling of the skin , cephalalgia , somnus unable to recover from fatigue , postexercise defatigation exceeding to 24 hours .

慢性疲劳综合征是现代高效快节奏生活方式下出现的一组以长期极度疲劳(包括体力疲劳和脑力疲劳)为主要表现的全身性症候群，其主要症状表现为短期记忆力或注意力明显下降，头痛，不能解乏的睡眠，运动后的疲劳持续超过24小时。

The results show that fatigue crack began to initiate at an interior inclusion at about 5%-10% of fatigue lifetime, and then many micro-cracks formed dispersively due to the decohesion of spherical carbide around the inclusion from the matrix, which will grow and coalesce each other with fatigue processing.

这种现象被认为是由于材料内部存在的非金属夹杂物引起的闭。目前的长寿命疲劳设计是以材料或结构在1护次应力循环的实验数据为基准的，而机器和结构承受1丁以上交变载荷的情况并不少见[3]。

The results under the oil lubricate friction conditions were similar with those under the dry friction conditions. The wear mechanism of 3Cr13 matrix alloy was micro-cutting and distorting wear. For the composites with a low fraction of TiC particle, distorting wear dominated and cutting was partly operating. For the composites with a high fraction of TiC particle, stress fatigue wear and wear of hard phase decohesion has occurred, but the main wear mechanism was still distorting wear. When the wear experiments were performed under the oil lubricate friction conditions, the main wear mechanism has became to abrasive wear and fatigue wear for the composites with the low TiC fraction, and fatigue wear would be to dominate for the composites with the high TiC fraction. There were similar wear mechanisms in H13 and 1Cr18Ni9 matrix composites.

在干摩擦条件下，3Cr13基体合金的磨损机理为显微切削和变形磨损；低体积分数的复合材料磨损机制以变形磨损为主，兼有少量的切削磨损机制；高体积分数的复合材料磨损机制以变形磨损为主，兼有应力疲劳磨损和脆性相剥落磨损；在油润滑摩擦条件下，3Cr13基体合金的磨损以磨粒磨损为主；低体积分数的复合材料磨损为磨粒磨损和疲劳磨损；高体积分数的复合材料磨损以疲劳磨损为主。H13、1Cr18Ni9基体及其复合材料的磨损机制类似于3Cr13基体及其相同体积分数的复合材料。

On the base of fatigue loading spectrum achievements, combining the characteristics of large-span grid structure with hanging cranes and the using-requirement on fatigue loading spectrum of grid structure with hanging cranes, this paper has firstly put forward the theoretic method for constructing fatigue loading spectrum of grid structure with hanging cranes, organized the relevantprogram--GJFLS. and elementally established the program loadingspectrum .

在继承疲劳载荷谱已有成果的基础上，本文结合网架设置悬挂吊车的特点以及网架疲劳载荷谱的使用要求，首次提出了网架疲劳载荷谱编制的理论方法，并编制了相应的程序，初步建立了网架程序载荷谱。

Written by pioneers in the study and analysis of very high cycle fatigue, Gigacycle Fatigue in Mechanical Practice compiles the most recent findings on gigacycle fatigue phenomena, focusing on improving the reliability and performance of key engine and machine components.

以开发者写在书房里和高循环疲劳的的分析，在机械实践过程中的Gigacycle 疲劳在gigacycle疲劳现象上编辑最新近的结论，集中于改进关键发动机的可靠性和性能和机器零部件。

After the fatigue curve with 50% reliability and a few fatigue test results of a crane element have been known, the method, namely JFKC method, in this paper can be used to get the fatigue limiting stress distribution of this crane element quickly, based on the Miner Hypothesis and.

本文在已知某种起重机零件可靠度为50%的疲劳曲线并有了该种零件的少量试件的疫劳试验结果的条件下，以作者提出的修正的曼耐尔假设和抛物线假设为基础，提出了起重机零件疲劳极限应力分布的快速测定法——JFKC*法。

The problem of fatigue damage of metal structures has been found in engineering field for a long time. As a whole of metal structure, about 80%~ 90% fatigue accidents are related with fatigue and rapture.

金属结构的疲劳破损是工程界早已发现的问题，就金属结构的总体来看，大约80%～90%的破坏事故和疲劳与断裂有关。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？