| 1. | Study on corrosion damage distribution law of aircraft structure
飞机结构腐蚀损伤分布规律研究 |
| 2. | Because fully avoiding of environmental erosion is difficult , the research on the corrosion damage of the super - duralium is still one of the affairs of the first magnitude
由于环境腐蚀介质的侵蚀不可能完全避免，因此，有关超硬铝合金构件的腐蚀损伤，仍然是航空领域中十分重要的研究内容。 |
| 3. | So methods on design , construction and protection should be used to protect the normal use of the bridge structures in the designed service time
因此，需要对预应力混凝土桥梁的腐蚀问题进行研究，并基于结构受腐蚀损伤的特点，提出相应的设计、施工及使用防护措施，保证结构在设计寿命内的正常使用。 |
| 4. | The formulation has been applied to a bulk carrier which sails in the north atlantic ocean . furthermore , the effects of maintenance actions in increasing the reliability level of ship hull girder are analyzed
由此可见，对存在疲劳和腐蚀损伤的船体梁进行时变可靠性分析时，必须考虑维修因素的影响才能更加符合实际情况。 |
| 5. | Hydro - chemical damage increases the width of a fracture , while hydraulic damage increases fractures " connectedness , which means that improve the seepage character of erosion rock . for erosion damage rock , its seepage field can be described by multi - medium mathematical seepage model
在此基础上，本文首次建立了腐蚀损伤岩体中水化-水力损伤的演化方程，并指出水化损伤重点在于增加岩体的渗透性，而水力损伤则增加裂隙网络的连通性。 |
| 6. | Stress decreases rock seepage character in elastic stage , while erosion damage increases it . under some conditions , the influence of stress to seepage may be shielded by erosion damage . obtaining the distribution of seepage field , tunnel external water pressure can be calculated in two ways : 1
高应力使裂隙闭合，一般是降低岩体的渗透性，而水化水力损伤则增加岩体渗透性，在腐蚀损伤发育到一定阶段，应力对渗透性的这种影响则可能会被屏蔽。 |
| 7. | Several key problems and their technical settlements were expounded emphatically , such as the accelerated corrosion test technique for aircraft structure under laboratory conditions , the evaluation technique for corrosion damage of anticorrosive coats , the distribution characteristics and their variation regularities of the corrosion damage and fatigue life , the corrosion equivalent relationship between the accelerated environment and the service environment , and the methods for theoretical analysis of the calendar life
重点对腐蚀环境下飞机结构加速腐蚀试验技术、防腐涂层腐蚀损伤评定技术、腐蚀损伤和疲劳寿命的分布特性及其变化规律、腐蚀当量关系和日历寿命理论分析方法等几个关键问题及其技术途径进行了阐述和探讨。 |
| 8. | We use the stressed fraction that is the most representational and sensitive to corroding to making experiment in combined type equivalent environment spectrum . we can calculate the velocity of corroding , protection period and basal body corroding expansion lifespan , first repair time and the interval of repair period
本文以模拟试验结果和使用中腐蚀损伤数据统计处理为主要依据，并同时满足安全性和经济性两方面的要求，在确定机体使用寿命时，以疲劳定寿结果为主、日历定寿为辅，综合给出飞机机体使用寿命。 |
| 9. | At the base of getting a great deal of structure corrode damage data and through statistic fitting method , discovered the rule between outboard wing corroded depth and lifespan at different airport . then we can calculate the inoxidizing coating lifespan , basal body corroding expansion lifespan and first repair time
在获得使用中结构腐蚀损伤的大量数据的基础上，通过统计拟合的方法，取得不同机场飞机外翼长桁腐蚀深度与日历寿命的统计规律的基础上，进而可以求得防护层的有效寿命、基体腐蚀扩展寿命。 |
| 10. | The hydro - chemical damage evolution equation is deduced by cross board model established by author by the method of chemical kinetics ( pwp equation ) . the hydro - chemical damage evolution of a fracture is defined by the variation of board geometry dimension caused by chemical reaction , while a channel by the cros s pipe of the board
水化损伤的演化可用交叉板模型：裂纹面用矩(碟)形板模型表示，裂纹交汇线用溶管线模型表示，可用化学动力学的方法( pwp方程)推导出腐蚀损伤岩体中水化损伤的演化方程。 |
