germann instrumentsgi impact-echo testing for delaminations in the walls of a marine structure...

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IMPACT-ECHO TESTINGfor

DELAMINATIONS IN THE WALLS OF A MARINE STRUCTURE

AuthorClaus Germann Petersen, In-Situ Testing of Copenhagen Ltd.

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IMPACT-ECHO

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CT P

2

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Impact-Echo Test Record

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Impact-Echo Wave Speed Record

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Cross-section of the marine walls

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VERIFICATION

50 cores were drilled out in areas found to be solid and delaminated

All cores confirmed the impact-echo test results

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SUMMARY

The 4 walls tested covered an area of 1440 m2A total of 6500 impact-echo were performed with the

DOCter impact-echo test system in one week by a two-man crew

Delaminations were found in one wallThe testing performed well in extreme harsh winter

weather conditions, close to the sea level

The test results were confirmed by a limited amount of cores