Question

which nondestructive testing method is very accurate, penetrates the full thickness of the specimen, yet can be hazardous to someone in the vicinity of the ongoing test? x - ray testing liquid penetrant testing magnetic particle testing fluorescent penetrant testing

Explanation:

X - ray testing uses electromagnetic radiation. It can penetrate the full thickness of a specimen accurately. However, X - rays are ionizing radiation. Prolonged or unprotected exposure to X - rays (even in the vicinity of an ongoing test) can cause harm to living tissues, such as increasing the risk of cancer, damaging DNA, etc. Liquid penetrant testing (including fluorescent penetrant testing) mainly detects surface - opening defects and does not penetrate the full thickness of a thick specimen in the same way as X - rays. Magnetic particle testing is mainly for ferromagnetic materials and detects surface and near - surface defects, and it does not have the penetrating power through the full thickness of a general specimen like X - rays and also does not pose the same radiation - related hazard.

Answer:

x - ray testing