COMPOSITES TESTING FOR QUALIFYING WHEAT STARCH AS AN ALTERNATIVE BLAST MEDIA

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Authors
  1. Russell, A.J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The results of mechanical testing carried out in order to qualify wheat starch based blast media for removing paint coatings from the carbon/epoxy components on the CF-188 aircraft are reported. Wheat starch has potential advantage over curently based plastic blast media in as far as it comes from a renewable resource and is bio-degradable. In this investigation, coatings to CF-188 aircraft specifications, were applied to both monolithic and honeycomb sandwich test panels and then completely removed by blasting with wheat starch media. Several different blasting conditions were evaluated by carefully controlling parameters such as pressure, angle of attack and travel rate. Tension, comparession, flexure and fatigue tests were then carried out in order to evaluate any loss of strength or stiffness. While deficiencies in the manufacture of some of the test panels reduced the sensitivity of some of these tests, no deleterious effects of wheat starch blasting were evident in any of the test results.
Keywords
Wheat starch;Stripping
Report Number
DREA-TM-97-256 — Technical Memorandum
Date of publication
01 Jan 1998
Number of Pages
22
DSTKIM No
98-02822
CANDIS No
509570
Format(s):
Hardcopy;Document Image stored on Optical Disk

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