TY - JOUR
T1 - Fast Fourier transform on analysis of Portevin-Le Chatelier effect in Al 5052
AU - Yuan, Zhanwei
AU - Li, Fuguo
AU - He, Min
PY - 2011/12/15
Y1 - 2011/12/15
N2 - Tensile tests were conducted with polycrystalline samples of Al5052 by deforming at room temperature on three different strain rates where the Portevin-Le Chatelier (PLC) effect was observed. The data of PLC effect serrations were obtained by subtracting moving average from the experimental stress-time data, and then analyzed by using Fast Fourier transform (FFT) to explore characteristics in frequency domain. The results indicate that the amplitude-frequency distribution is in different type from each other with different strain rate. And strain has little influence on FFT results. Moreover, through mathematic analysis on FFT results, the distribution characteristic curves have been obtained.
AB - Tensile tests were conducted with polycrystalline samples of Al5052 by deforming at room temperature on three different strain rates where the Portevin-Le Chatelier (PLC) effect was observed. The data of PLC effect serrations were obtained by subtracting moving average from the experimental stress-time data, and then analyzed by using Fast Fourier transform (FFT) to explore characteristics in frequency domain. The results indicate that the amplitude-frequency distribution is in different type from each other with different strain rate. And strain has little influence on FFT results. Moreover, through mathematic analysis on FFT results, the distribution characteristic curves have been obtained.
KW - Al5052
KW - Fast Fourier transform
KW - Portevin-Le Chatelier effect
UR - http://www.scopus.com/inward/record.url?scp=82255175552&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2011.09.101
DO - 10.1016/j.msea.2011.09.101
M3 - 文章
AN - SCOPUS:82255175552
SN - 0921-5093
VL - 530
SP - 389
EP - 395
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 1
ER -