| 摘要 |
The present invention relates to a collimeter structure for a radiographic test, which can reduce danger of radiation exposure for a worker by minimize the spread range of scattering radiation through an improved structure of a collimeter used for a radiographic test, one of non-destructive tests. The collimeter for a radiographic test comprises: a cylindrical metal body (110) with a radius which can shield in order to prevent radiation released from a radiographic source (2) from penetrating to the outside when the radiographic source (2) is located at an internal radiation position; a source inducing hole (112) which is formed at one side end of the body (110) in an axial direction to the radiation position along the axial central line in order to induce and guide so that a source head (4) embedded with the radiographic source (2) can reach the radiation position; and a radiation window area (116) which is an area with a thin radius direction thickness from the axial center of the body (110) to a test body, and allows the radiation released from the radiographic source (2) at the radiation position to penetrate the area and reach the test body. The radiation window area (116) has a structure where an axial radiation angle of the radiation from the radiographic source (2) remains within 90 degrees. |
