Fast Fourier transform on analysis of Portevin-Le Chatelier effect in Al 5052

Zhanwei Yuan; Fuguo Li; Min He

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Fast Fourier transform on analysis of Portevin-Le Chatelier effect in Al 5052

机译：Al 5052中Portevin-Le Chatelier效应分析的快速傅里叶变换

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Tensile tests were conducted with polycrystalline samples of AI5052 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.

机译：通过在室温下以三种不同的应变速率变形AI5052的多晶样品进行拉伸试验，观察到Portevin-Le Chatelier（PLC）效应。通过从实验应力时间数据中减去移动平均值获得PLC效果锯齿的数据，然后使用快速傅立叶变换（FFT）进行分析以探索频域特性。结果表明，振幅-频率分布类型不同，应变速率不同。应变对FFT结果影响很小。通过对FFT结果的数学分析，得到了分布特征曲线。

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《Materials Science and Engineering》 |2011年第2011期|p.389-395|共7页
作者
Zhanwei Yuan; Fuguo Li; Min He;
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作者单位

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China,;

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China,;

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;

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正文语种 eng
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关键词
portevin-le chatelier effect; A15052; fast fourier transform;

机译：portevin-le chatelier效应;A15052;快速傅立叶变换;

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1. Calorimetric analysis of Portevin-Le Chatelier bands under equibiaxial loading conditions in Al-Mg alloys: Kinematics and mechanical dissipation [J] . Le Cam Jean-Benoit, Robin Eric, Leotoing Lionel, Mechanics of materials . 2017,第FEBa期

机译：Al-Mg合金等双轴载荷条件下Portevin-Le Chatelier带的量热分析：运动学和机械耗散
2. Microstructural characterization of the Portevin-Le Chatelier band in an Al-Mg alloy by X-ray diffraction line profile analysis [J] . A. Sarkar, P. Mukherjee, P. Barat Powder diffraction . 2010,第3期

机译：X射线衍射线轮廓分析法表征铝镁合金中Portevin-Le Chatelier谱带的微观结构
3. Multiscale entropy analysis of the Portevin-Le chatelier effect in an al-2.5%Mg alloy [J] . Sarkar A., Barat P., Mukherjee P. Fractals: An interdisciplinary journal on the complex geometry of nature . 2010,第3期

机译：Al-2.5％Mg合金中Portevin-Le chatelier效应的多尺度熵分析
4. Investigation of the Portevin-Le Chatelier effect in metals under additional vibration impact by using the DIC-technique and the IR-analysis [C] . Tatyana Tretyakova, Valery Wildemann, Mikhail Tretyakov International Conference on Fracture and Structural Integrity . 2019

机译：用DIC技术和IR分析调查额外振动冲击下额外振动冲击的Portevin-Le Chatelier效应
5. A comparison of fast orthogonal search, Fourier transform, and wavelet transform approaches in nonstationary signal analysis. [D] . Davis, Thomas Edward. 1993

机译：非平稳信号分析中快速正交搜索，傅立叶变换和小波变换方法的比较。
6. The Use of Continuous Wavelet Transform Based on the Fast Fourier Transform in the Analysis of Multi-channel Electrogastrography Recordings [O] . Dariusz Komorowski, Stanislaw Pietraszek -1

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7. Calorimetric analysis of Portevin-Le Chatelier bands under equibiaxial loading conditions in Al–Mg alloys: Kinematics and mechanical dissipation [O] . Le Cam, Jean-Benoît, Robin, Eric, Leotoing, Lionel, 2017

机译：Al-Mg合金等双轴载荷条件下Portevin-Le Chatelier带的量热分析：运动学和机械耗散
8. Comparison of Arithmetic Requirements for the PFA (Prime Factor Algorithm), WFTA (Winograd Fourier Transform Algorithm), SWIFT, MFFT (Mixed Radix Fast Fourier Transform), FFT (Fast Fourier Transform) and DFT (Discrete Fourier Transform) Algorithms. [R] . Hicks, R. C. 1982

机译：pFa（素因子算法），WFTa（Winograd傅立叶变换算法），sWIFT，mFFT（混合基线快速傅里叶变换），FFT（快速傅立叶变换）和DFT（离散傅立叶变换）算法的算术要求的比较。

Fast Fourier transform on analysis of Portevin-Le Chatelier effect in Al 5052

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