In this paper, an experimental study on the long-term creep deformation of 475℃ pipeline was conducted using the Moiré method. The experimental principle and procedure, as well as the accuracy of measurement, were discussed in detail. The successful result verifies longterm measurement of the creep of pipeline using the Moiré method is feasible.

This paper proposed new ways for producing multi-layer model grids for electron beam moiré method. An electron beam lithography system was set up under scanning electron microscope which was equipped with a beam blanking device and a pattern generator. The two-deposited-metal layers method was used to manufacture electron beam grating for high-temperature use. The results verify that the Zr-Pt-type grating possesses heat resistance up to 1100℃ invacuum. A new type of composite grating with frequencies 100 lines/mm and 1000 lines/mm using three deposited layers was produced. A 10000 lines/mm two-deposited-metal layers grating was successfully fabricated using electron beam lithography.