摘要
介绍了利用快速傅立叶变换(FFT)分析木材受冲击激励后产生的响应信号频谱特征,探讨了木材强度与响应频谱特性和木材物理参数的相关性,提出了新的提取共振频率方法。
According to FFT application, the paper analyzed the wood of the response signal spectra characteristics which is impacted. At the same time it discussed the relevance between wood intensity and the response spectra characteristics and the wood-physics parameter, and also proposed the new method which withdrew the resonance frequency.
出处
《木材加工机械》
2006年第3期28-30,33,共4页
Wood Processing Machinery
基金
黑龙江省攻关项目(GB02A108-1)。
关键词
FFT
共振频率
无损检测
木材强度
FFT
resonance frequency
non-destructive test
wood intensity
