METHOD FOR CREATING NON-INSERTED ARTIFICIAL DISBONDS OR DELAMINATIONS FOR NONDESTRUCTIVE INSPECTION TEST STANDARDS

摘要

A method for creation of a non-destructive inspection (NDI) standard employs a coupon of bonded layers or a composite structure having a predetermined thickness. A predetermined pulse width is defined. The coupon and a laser source are positioned with respect to one another and the laser source is used to create a laser pulse having the predetermined pulse width to create a disbond or delamination in the bond layer at a predetermined location. The coupon may then be used as a standard for calibration of NDI inspection tools by scanning the coupon with the tool to provide an inspection output. The output is then examined to confirm that the disbond or delamination in the coupon is properly identified in the output.

主权项

1. A method for creating a non-destructive inspection (NDI) standard, the method comprising:
selecting a coupon having a predetermined thickness; defining a predetermined pulse width; positioning the coupon and a laser source relative to one another; and, using the laser source to generate a laser pulse having the predetermined pulse width to create at least one defect in the coupon, wherein the predetermined pulse width is shorter than a travel time of the laser pulse through the thickness of the coupon.