Abstract: The present invention relates to a system for intermediating a used bicycle trade-in between a seller and a buyer, comprising a bicycle verifying part including a non-destructive testing or NDT module for verifying inside of a frame of a bicycle provided by the seller.

Abstract: A non-destructive inspection apparatus is provided. The non-destructive inspection apparatus includes at least one memory configured to store commands for performing predetermined operations, and at least one processor operatively coupled to the at least one memory and configured to execute the commands. The at least one processor is configured to obtain information on a transmission amount of an X-ray by emitting the X-ray to a part of a bicycle, generate a gray scale image based on the information on the transmission, measure an amount of change in a gray value from one end to the other end of the part of the bicycle represented in the gray scale image along an extending direction of the part, and detect an area in which the amount of change in the gray value is equal to or greater than a threshold, as an abnormal area.

Abstract: The present invention relates to a system for intermediating a used bicycle trade-in between a seller and a buyer, comprising a bicycle verifying part including a non-destructive testing or NDT module for verifying inside of a frame of a bicycle provided by the seller.