Pad pasting is detected to material surface crack quantity and position

The utility model provides a pad pasting is detected to material surface crack quantity and position, relates to material nondestructive test. A pad pasting is detected to material surface crack quantity and position that is automated inspection material surface crack quantity and position fast is provided. Be equipped with array arrangement's rectangle gasbag, the rectangle gasbag constitutes by exchanging damaged polyester class plastic film, is full of nontoxic coloured gas inside the rectangle gasbag, nitrous oxide for example. The size of rectangle gasbag is adjusted according to required resolution ratio, and the length of side of rectangle gasbag is 10-3 rice magnitude under the normal conditions, and pad pasting thickness is 10-4 rice magnitude, it has colorless transparent polyester plastics thin slice and inclines as the formation of image to paste on one side of the rectangle gasbag, and the opposite side of rectangle gasbag is equipped with colorless transparent viscose layer as pasting the side. Because the gasbag is array arrangement, can judge the position of colourless gasbag appearance and the quantity of appearance through shooing the image that obtains, can obtain material surface crack's quantity and positional information correspondingly.