Apparatus for nondestructive crack inspection
AssigneeUnist Academy-Industry Research Corporation
InventorsFranklin Bien, Hyon Gi YOO, Zhenyi Liu, Nguyen Ngoc Quang, Seul Ki Rom KIM, Joo Hyeob SONG
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Abstract
According to the present invention, it is possible to determine a defect on a product caused in a press process by applying a predetermined acoustic signal to an object to be inspected and then sensing propagation of the applied signal, and it is possible to improve inspection performance, using an acoustic sensor capable of sensing sounds in an audible band and a high-frequency sensor capable of sensing sounds in an non-audible band.
Claims5
An apparatus for nondestructive crack inspection which inspects defects on panels produced in a pressing process, the apparatus comprising:
- a first sensor detachably disposed on a panel and sensing an acoustic signal in an audible band emitted from the panel;
- a second sensor detachably disposed on panel and sensing acoustic signals in a non-audible band emitted from the panel;
- an amplifier amplifying and outputting acoustic signals received by the first and second sensors;
- and
- a signal processor recognizing whether there is a defect by processing signals outputted from the amplifier.
Dependencies are inferred from the claim text.