Fatigue test device for torque arm assembly

Abstract

The invention discloses a fatigue test device for a torque arm assembly and belongs to the fatigue test technology for torque arm assemblies. The fatigue test device for the torque arm assembly is characterized in that two opposite semicircular holes are formed in one end of a shaft body of an artificial main shaft, the outer diameter of the shaft body of the artificial main shaft is matched with the inner diameter of a clamping ring, the two semicircular holes in the shaft body and two opposite semicircular holes in the clamping ring are aligned, and the other end of the artificial main shaft is fixed to a test stand rack; a first actuator is connected with a first force transducer and is connected with a first torque arm through a first loading connector, a second actuator is connected with a second force transducer and is connected with a second torque arm through a second loading connector, the first actuator and the second actuator are symmetrical about the artificial main shaft, a pair of loads which are opposite in direction are exerted on the first loading connector and the second loading connector respectively in the tangential directions of the torque arms, and the fixed end of the first actuator and the fixed end of the second actuator are fixed to the test stand rack. According to the fatigue test device for the torque arm assembly, the loading structure and the load characteristics can be simulated more truly, and results are more accurate and more credible. When the fatigue test device is used for testing, the overall testing error can be controlled below 3%.

Description

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AI Technical Summary

Benefits of technology

This new design allows for better simulation on how long it takes during use without causing damage or affects its performance. It uses both an upper and lower set of force-generating devices that applies forces onto specific parts of the system called the twist arm assemblies (TWA). These tests demonstrate that this configuration accurately replicates what happens when there're no external influences like vibrations or impacts from outside. Overall, these technical improvements help improve safety measures by reducing errors caused by factors such as stress concentration and wear debris accumulation over time.

Problems solved by technology

The technical problem addressed in this patented text relates to simulation testing on structures such as Helmets that have twist-arm systems attached at both ends (the movement rings) to transmit force from an upstream direction towards down stream directions during flight operations. This requires accurate simulations overall, but current methods may result in errors due to factors like stress concentration caused by repeated impacts between different parts of the system's components.

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