In the microhardness survey test, a pyramid-shaped diamond is impressed into 23 or more points across the face of a weldsample cross section.
在显微硬度测试中，在焊缝试样横截面上用锥形金刚石压入23或更多的点。
2
Buried flaw was found in FCB weld. CTOD test was performed on the weldsample.
用FCB法对船板钢进行焊接试验，发现在焊缝中存在内埋裂纹。
3
Through the pipe sample cutting and analyzing the crack in the fillet weld between the hot reheat pipe and the warming pipe, it was found out that the cause of the crack is due to the thermal fatigue.