Honeycomb climbing drum test

Mechanical properties are for unsupported film adhesive and adherends primed with EA 9289 water borne primer. Peel test - honeycomb climbing drum. 

Immersion Testing Conventional single overlap lap-shear and honeycomb climbing drum peel specimens are immersed in the requisite liquid or vapour for the requisite time. 

Climbing drum peel test K B ARMSTRONG Peeling of metal sheet, for example, skin from honeycomb... 

The climbing-drum peel specimen is described in ASTM D 1781. This test method is intended for determining peel strength of thin metal facings on honeycomb cores, al-thongh it can be generally used for joints where at least one member is flexible. 

In aircraft construction, sandwich panels made of metal facings bonded onto honeycomb are usually peeled with the climbing drum peel test, according to EN 2243-3 (Fig. 36) or ASTM D 1781 or MIL A 83376. 

Figure 36 Climbing drum peel test for honeycomb sandwich panels (a) specimen configuration (b) climbing drum apparatus (c) typical trace of climbing drum peel test.

Honeycomb Peel A conventional thin-skinned honeycomb sandwich panel is tested in peel using the so-called climbing drum peel rig (Fig. 50). Applying a measurable torque to the drum forces it to climb the specimen and, hence, peel off the bonded skin enough specimens are tested to be able to assess the adhesive bond to both top and bottom skins in the sandwich. 

Figure 50 Schematic of the honeycomb sandwich climbing drum peel test.

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