Instron AVE2, Operator'S Manual

Page: 54 / 88

Chapter: Mark specimens
54 M16-16905-EN
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wicking can occur when testing woven specimens and the wet ink is drawn, by
capillary action, into the fibers of the specimen.
If bleeding or wicking is a consistent problem, you should consider using tape dots.
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Loss of detection of ink dots during tests can be caused by:
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change of specimen color during testing so that contrast between the dot and
the specimen is lost - consider using a different ink color
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fading of the dot due to excessive extension during the test - consider using tape
dots
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flaking of the ink from the specimen - make sure the ink is compatible with the
specimen material and consider testing the specimen while the ink is still wet
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the dot moves outside the field of view of the lens because specimen extension
was larger than expected - use a lens with a larger field of view