摘要
本文通过对花岗岩弹性波速度、低频内耗和声发射随温度变化的实验研究，得出如下结论：波速和杨氏模具随温度的升高逐渐下降，到α-β相变点附近，波速和模量下降的梯度明显增大，并在此获得了标示石英相变的内耗峰。同时在相变点附近出现了声发射率的第二个高峰。
This paper deals with elastic wave speed, low-frequency internal friction and acoustic emission and their variations with temperatures. It is found that wave speed and Young' s modulus tend to increase with temperature. In the neighbourhoQd of Q-9 phase transition's point, the decreasing gradient of wave speed and modulus increases obviously. From this the iopnal friction peak marking the phases transition of quartz is obtained. At the same time.the second peak of acoustic emission has been found in the neighbourhood of the phase transition point.
出处
《矿物学报》
CAS
CSCD
北大核心
1994年第3期223-227,共5页
Acta Mineralogica Sinica
关键词
花岗岩
矿物相变
物性特征
low-frequency internal frictionl mineral phase transition
damage factor
loss of modulus
rate of acoustic emission
