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Session: Poster pitches day 3
Session starts: Wednesday 28 June, 10:00
Presentation starts: 10:00
Room: Theatre room: plenary

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Yuri Kudryavtsev (Structural Integrity Services Inc. )
Lana Potapova (Structural Integrity Services Inc. )

Abstract:
Residual stresses (RS) can significantly affect the engineering properties of materials, parts and welded elements and this factor should be taken into account during the design, manufacturing, maintenance and repair of different products and structures [1]. Although certain progress has been achieved in the development of different experimental techniques, a considerable effort is still required to develop efficient and cost-effective methods of RS measurement. The non-destructive ultrasonic method allows one to measure the RS in both cases: averaged through thickness or in surface/subsurface layers of material. The present version of the developed compact equipment allows measuring the averaged through thickness RS in plates 2 - 200 mm thick as well the RS in surface/subsurface layers of material to the depth of 1-4mm [2-4]. RESULTS AND CONCLUSIONS. The RS were measured in a number of welded AA5083 and AA6061- T6 aluminum alloys specimens. Distribution of both longitudinal and transverse components of RS was analyzed along the weld and in direction transverse to the weld. The relaxation of RS in one of the welded sample during fatigue loading was also analyzed [5]. The comparison of the results of ultrasonic measurements of RS with the results received by destructive crack compliance method of RS evaluation showed reasonable agreement.