Materials Performance

JUN 2016

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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Page 20 of 100

18 JUNE 2016 MATERIALS PERFORMANCE NACE INTERNATIONAL: VOL. 55, NO. 6 somewhere, the waves will be ref lected back from the damaged area and detected with other sensors. The next sensor then takes its turn as an actuator. Data are transferred via cable connec- tion to the handheld reader, and eventu- ally transferred to a PC. The data received are similar to those of a computed tomog- raphy (CT) scan. The end user, in this case the inspector of the offshore wind farm, receives an image of the weld with dam- aged areas color-coded according to severity. This inspection system offers a num- ber of benef its. It is far more precise than other methods used to date because it can analyze the dimensions and depth of cracks, which until now was impossible. Furthermore, this ty pe of inspection is much faster than labor-intensive manual methods—the job is complete in just 10 min. The researchers, working with the staff from Baltic Taucher (Rostock, Ger- many), successfully demonstrated the viability of the process during an on-site trial at EnBW Baltic 1, the f irst German commercial offshore wind farm in the Baltic Sea. For this trial, a crack measur- ing 0.9-mm wide, 45.0-mm long, and 7.0- mm deep was created in a branched metal pipe that was lowered to the bottom of the Baltic Sea at a depth of 18 m. The trial was a success. The sensor system was able to locate the crack with excellent preci- sion, as well as determine its length, height, and depth. The researchers are hopeful that the system will be certif ied and ready for robotic operation in approximately f ive years. Their goal is to sustain a long ser- vice life for wind turbines while support- ing the transition to new energ y sources. Source: Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Web site: MATERIAL MATTERS Continued f rom page 17 AUTHORS WANTED NACE is looking for industry experts to write and edit NACE-published books and compilations. Contact Jonnie Fuller +1 281-228-6496

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