The present study investigates the frequency-temperature coupling effects on wave propagation through granite. The pendulum impact test was conducted on the thermally treated long granite bars. The wave propagation coefficients, such as attenuation ratio and wave velocity, were determined for the granite under five groups of high-temperature and six groups of incident waves with different frequencies. A relationship between the dynamic modulus of granite, frequency of stress wave and the high temperature was revealed. The frequency-temperature coupling effects on the dynamic modulus were discussed. The results show that the attenuation ratio, wave velocity and dynamic elastic modulus increase with the increase of frequency. The attenuation ratio increases with the increase of temperature, while the wave velocity and dynamic elastic modulus decrease with the increase of temperature. The proposed relationship between the dynamic modulus, frequency and temperature can efficiently describe the frequency-temperature coupling effects on the granite with acceptable error. The present study has potential in the application of wave propagation through granite in the high-temperature environment.

本研究调查了频率-温度耦合对波通过花岗岩传播的影响。对经过热处理的花岗岩长条进行摆锤冲击试验。测定了五组高温和六组不同频率入射波作用下花岗岩的波传播系数，如衰减比和波速。揭示了花岗岩的动态模量、应力波频率与高温之间的关系。讨论了频率-温度耦合对动态模量的影响。结果表明，随着频率的增加，衰减比、波速和动弹性模量增加。衰减比随温度升高而增大，而波速和动弹性模量随温度升高而减小。所提出的动态模量、频率和温度之间的关系可以有效地描述频率-温度耦合对花岗岩的影响，并且误差可以接受。本研究在高温环境下通过花岗岩传播波的应用具有潜力。