Constant amplitude dynamic force calibration - calibration and verification of non - resonant uniaxial dynamic testing systems - method 等幅动态力校准.非共振单轴向动态检验系统的校准和验证.方法
( 3 ) the fatigue behavior of concrete under uniaxial tension with constant amplitude cyclic loading but high temperatures is investigated based on test results ( 3 )进行了高温下混凝土在等幅重复荷载作用下的抗拉疲劳性能试验。
In a first approximation , the departure from a constant amplitude vs frequency characteristic will be a characteristics with a linear slop that will vary with time 采用一级近似,则可认为对频率特性曲线的等幅偏移是一具有时变线性斜率的特性曲线
Constant amplitude force calibration - calibration of the calibration device instrumentation to be used for the dynamic calibration of non - resonant uniaxial dynamic testing systems - method 等幅力校准.非共振单轴向动态检验系统的动态校准用校准装置仪器的校准.方法
The single - chip function generator icl8038 can get synchronous sine wave of constant amplitude in pll as voltage control oscillation ( vco ) , which is a basic signal source of static frequency converter 单片函数发生器icl8038在pll中作为压控振荡器( vco )产生同步等幅正弦波，可作为静止变频器的基准信号源。
Bond behaviors of the interfaces between 3 surface patterns of prestressing tendons and concrete were compared , the bond mechanisms between the helical prestressing tendons and concrete were explained , and the main influencing factors on bond anchorage performance were discussed 根据试验结果，给出3种高强预应力钢筋在等幅重复荷载作用下的特征荷载值与应力水平上限的关系式。
The establishment principle and the applicability of the three improved miner ' s rules were analyzed . the rules were examined by a constant amplitude loading . the results proved the rationality of the statistic miner ' s rule 对三种改进的miner准则从模型的建立原理和适用性方面进行的分析，并用一级等幅疲劳载荷对其进行了验证，论证了改进的miner准则中随机miner准则的合理性。
Fatigue test indicates that strain multiplier have not been damaged for fatigue in the service life of fatigue life gage , fatigue response of fatigue life gage can be derived from the strain amplitude equal to specimen strain multiplied by amplification coefficient of strain multiplier 疲劳实验研究表明,在疲劳寿命计工作寿命内,应变倍增器无疲劳破坏情况,疲劳寿命计疲劳响应可由静载标定放大倍数乘试件表面应变后所对应的等幅应变值得到。
For the heterodyne interferometer used within the nanometer and sub - nanometer region , the frequency leakages due to the imperfect optical elements and the thermal non - linearity drift restrict its uncertainty to about 20nm . a more comprehensive theoretic analysis for this non - linearity of heterodyne interferometer is given 从理论上研究了双频激光干涉仪非线性误差产生的原因；分析了直流偏量、等幅性偏差、正交误差对比相法相位测量结果的影响； 4
Fatigue tests were carried out for 70 small - scale beams ( 55 lsfrc beams and 15 plain concrete beams ) . the evolvement of fatigue strain and damage with cycles was discussed and the influence of steel fibers and the stress level on the fatigue strain and damage was analyzed 通过70根(层布式钢纤维路面55根，素混凝土15根)试验小梁的等幅弯曲疲劳试验，得出了层布式钢纤维路面混凝土的疲劳变形和损伤特征，并分析了钢纤维和应力水平对疲劳变形和损伤的影响。
