TM 1-1520-265-23Figure 4-3. Honeycomb and Composite StructuresNOTEThis setup is very sensitive to thin skin-to-core bonding. If the panel skin is 0.020 inch thick orless, move the probe slowly over the skin and note the slight amplitude change (bounce) as theprobe senses alternately the honeycomb cell nodes and cell walls. Be sure of panelconfiguration. Panel edges and attachment points may not be bonded structure and do notnormally contain honeycomb. These areas will respond similarly to voids with the Bondmaster.Panels having rigidized skins are more easily scanned using wide Teflon tape on the probeholder.4.3.3.7Marking and Recording of Inspection Results. Mark and record as required by paragraph 1.3.NOTEAttention shall be directed to accurately marking the boundaries of all voids on both sides of thepanel. These markings will be needed to determine acceptance/rejection criteria in accordancewith the applicable technical manuals listed in Table 1-1.4.3.4 BackupMethod. None required.4.3.5 SystemSecuring. Reinstall acceptable panels that were removed for inspection in accordance with the applicabletechnical manual listed in Table 1-1.4-9
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