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METHOD FOR ASSESSING FATIGUE DAMAGING METAL ELEMENTS OF AIRCRAFT STRUCTURES DURING FLIGHT TESTS BASED ON AN EXTENDED MODIFIED FATIGUE CURVE
METHOD FOR ASSESSING FATIGUE DAMAGING METAL ELEMENTS OF AIRCRAFT STRUCTURES DURING FLIGHT TESTS BASED ON AN EXTENDED MODIFIED FATIGUE CURVE
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机译：基于扩展修正疲劳曲线的飞机结构疲劳试验中疲劳损伤金属元素评估方法
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摘要
FIELD: aviation.;SUBSTANCE: invention relates to aircraft engineering, particularly to methods of estimating fatigue damage of structural elements. Method for assessing fatigue damaging metal elements of aircraft structure during flight tests involves measurement of values of voltages and temperatures in flight of strain gauges and temperature sensors located on different elements of structure, processing of results of these measurements by "complete cycles" method and Oding theory with reduction of flight cycles of voltages to zero-value ones σ0i, characterized by maximum values and number of their recurrence Ni. Further, processing results are compared with fatigue test data of structural elements or standard samples for calculation of accumulated during damageability conditions. Strain gages are located near critical points of the structure, but not closer than ten radii of curvature at critical points in the structure. For estimating measured voltages static component of voltages is additionally corrected by value of mounting voltages.;EFFECT: possibility of evaluating damageability in the absence of complete fatigue characteristics.;1 cl, 4 dwg, 5 tbl
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机译：技术领域本发明涉及飞机工程，尤其涉及估计结构元件的疲劳损伤的方法。在飞行测试中评估飞机结构疲劳破坏性金属元素的方法包括测量应变仪和位于结构不同元素上的温度传感器在飞行过程中的电压和温度值，通过“完整循环”方法和奥丁处理这些测量结果电压飞行周期减少到零值σ 0i 的理论，其特征在于其最大值和重复次数N i 。此外，将处理结果与结构元件或标准样品的疲劳测试数据进行比较，以计算损坏条件下的累积量。应变计位于结构的关键点附近，但在结构的关键点处不小于十个曲率半径。为了估计测得的电压，还需要通过安装电压值来校正电压的静态分量;效果：在没有完全疲劳特性的情况下评估损坏性的可能性; 1 cl，4 dwg，5 tbl
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