We present the precision measurement from May 2011 to May 2017 (79 Bartels rotations) of the proton fluxes at rigidities from 1 to 60 GV and the helium fluxes from 1.9 to 60 GV based on a total of 1×10^{9} events collected with the Alpha Magnetic Spectrometer aboard the International Space Station. This measurement is in solar cycle 24, which has the solar maximum in April 2014. We observed that, below 40 GV, the proton flux and the helium flux show nearly identical fine structures in both time and relative amplitude. The amplitudes of the flux structures decrease with increasing rigidity and vanish above 40 GV. The amplitudes of the structures are reduced during the time period, which started one year after solar maximum, when the proton and helium fluxes steadily increase. Above ∼3  GV the p/He flux ratio is time independent. We observed that below ∼3  GV the ratio has a long-term decrease coinciding with the period during which the fluxes start to rise.

Aiming at the flexible hinge is often affected by external random variable loading operating noise fluctuation and complex factors, the fatigue degradation or failure is lack of analysis methods and that causes weak link of fatigue life analysis is difficult to find in the engineering practice. This paper introduces fatigue analysis method combines the fatigue of rain flow counting method and Pam Glen palmgren Miner theory. The article uses random loadtime history to deal with cyclic loadings by rain flow counting method. Calculate the flexible hinge fatigue damage with the S-N curve in different stress. The fatigue life and the design of the weak link are obtained under random variable loading through simulation with ANSYS. The strategies are given to improve the anti-fatigue for rectangular flexible hinge which improve the deficiencies in the design. This method has instruction and reference value to actual project.