摘要
本文提出一种新的面内应变求解方法——相位求解法。该方法直接利用变形体内部的栅线图象，通过快速傅里叶变换、频谱分析、相位展开及应变计算，最后求得全场的应变分布。该方法数据处理自动化程度高，信息量大，且具有较高的求解精度。
A new phase method of strain analysis in in-plane in proposed. Using the image of deformed grating, the strain distribution on the whole field can be obtained by FFT,spectrum analysis,phase unwrapping and differentiation.The method has advantages over moire in both accuracy and automation which are also verified by the simulation analysis.
出处
《塑性工程学报》
CAS
CSCD
1997年第1期3-8,共6页
Journal of Plasticity Engineering
关键词
相位法
应变分析
金属
塑性加工
Phase method, strain analysis, image processing, moire method, FFT
