DO NOT STRIKE SURFACE OF COMPONENT WITH TOO MUCH FORCE. DAMAGE MAY OCCURE!
This Taphammer is made uit tempered Stainless steel
Using tap-test tool
- Tap the entire suarface of the inspection area in a square grip pattern of aproxemetly of 10 mm. (⅜"Inches)
- In areas where there is no de-or dis-bonding, tapping the surface of the component face sheets will produce a clear sound.
- In areas containing delamination/de or dis-bonding, the tapping surface of the compnent face sheets will produce a dull sound.
- Scan increments should be no greater than one third alloweble damage limit size.
- Differances in laminate thickness can cause the tap sound to change.
- On large parts, draw lines (with APROVED pencills) on the surface to make sure the inspection area id fuly examinated.
- Tap testing is not reliable on facesheets with more than 3 plies but tap testing is allowed to determine the extent of lightning strike damage on any thickness composite structure.
- NDI inspectors and Techicians performing tap testing are advised to do a hearing test.