Resonant Absorption Mechanical Spectrometer and Its Applications in Solids
ZHANG Jin-Xiu, GONG Kang, XIONG Xiao-Min, DING Xi-Dong
State Key Laboratory of Optoelectronics of Materials and Technologies and Department of Physics, Zhongshan University, Guangzhou 510275
Resonant Absorption Mechanical Spectrometer and Its Applications in Solids
ZHANG Jin-Xiu;GONG Kang;XIONG Xiao-Min;DING Xi-Dong
State Key Laboratory of Optoelectronics of Materials and Technologies and Department of Physics, Zhongshan University, Guangzhou 510275
关键词 ：
62.40.+i ,
62.90.+k ,
62.65.+k
Abstract ： An improved apparatus is developed from Ke-pendulum. This new apparatus, resonant absorption mechanical spectrometer (RAMS), can measure the internal friction of solids under a forced vibration mode and the measuring frequency can change quasi-continually from a frequency that is much lower than the resonant frequency of the pendulum system, fr , to the one that is much higher than fr . The internal friction measurement is able to cover the frequency range from 10-3 Hz to kHz. The measurement method and the calculation formula of the internal friction measured by a RAMS in the full frequency range are derived. A series of resonant absorption peaks are observed in copper, aluminum, zinc, iron samples by the RAMS. The resonant absorption characteristics of the copper sample are studied in details. The experimental results indicate that the position (frequency) of the resonant absorption peaks are independent of the resonant frequency of the pendulum system. The reality of resonant absorption mechanical spectra is discussed and an inference based on the experimental results is presented such that the RAMS is able to characterize some feature of solid materials.
Key words ：
62.40.+i
62.90.+k
62.65.+k
出版日期: 2003-10-01
:
62.40.+i
(Anelasticity, internal friction, stress relaxation, and mechanical resonances)
62.90.+k
(Other topics in mechanical and acoustical properties of condensed matter)
62.65.+k
(Acoustical properties of solids)
引用本文:
ZHANG Jin-Xiu;GONG Kang;XIONG Xiao-Min;DING Xi-Dong. Resonant Absorption Mechanical Spectrometer and Its Applications in Solids[J]. 中国物理快报, 2003, 20(10): 1807-1810.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I10/1807
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