The Zhang family,the original habitants of Yanyun area,rose probably in the middle of the Liao dynasty.

In Song Dynasty,when the northern minorities came into the Central Plains and established their regime of Liao,ethnic discrimination and national oppression became prominent,which was also true of Liao regime after it had occupied Yanyun 16 states.

Investigated stresses were relieved by cutting specimens along a radial direction, and additional strain fields created by relieving the stresses were measured using moire interferometry.

The residual stress distribution around cold expanded holes was measured by moire interferometry,the influence of reaming and fatigue on the residual stress were investigated experimentally.

The moire interferometry method and moire interferometry-finite element analysis hybrid method have been applied to study interface fracture behaviors of bimaterial specimen which is simulated to porcelain-Fused-to Metal (PFM) restoration.

The thermal strain of bimetal soldering joint (Cu and Kovar) is analysed with moire interferometry method.

Moire interferometry is an optical measurement which is noncontact and has big measuring range, wonderful fringe quality, real-time whole field measurement and high sensitivity, so it can measure the physical quantities about the tiny displacement and strain field of the surface of specimen accurately and effectively.

This study investigates a new 2-dimensional phase unwrapping method named RIPI (Regional Identification, partition and Integral phase unwrapping method), which is aiming at the problems of "line-draw" and loss of useful data while phase unwrapping in processing moiré interferometry experiment images.

The technique of carrier modulation in Moiré interferometry is important in displacement measurement of an object.

Meanwhile, as a rapidly developing technique of photomechanics, moiré interferometry has attracted attention for its advantages of high sensitivity, excellent contrast, noncontact, real time, whole field, e.