1Prykhodko, VI, 1Vysokolyan, MV, 1Volochai, VV, 2Prokopenko, GІ, 2Mordyuk, BN, 3Cherepin, VТ, 3Krasovskiy, ТА, 4Popova, ТV
1PJSC Kriukov Railcar-Building Works, Kremenchuk
2The Kurdiumov Institute of Metal Physics of NASU, Kyiv
3Physical and Technical Research and Training Center of NASU, Kyiv
4Ukrainian Research Institute of Railcar Building Subsidiary, Kremenchuk
Sci. innov. 2014, 10(1):5-16
https://doi.org/10.15407/scine10.01.005
Section: Research and Technical Innovative Projects of the National Academy of Sciences of Ukraine
Language: English
Abstract: 

A new modification of portable ultrasonic equipment (0.8 kW power, digitally controlled) has been developed for strengthening and relaxation treatment of metallic product surface. A batch of such devices has been produced; the design documents on the ultrasonic generator and impact instrument with a piezoceramic transducer have been prepared. Preparation of ultrasonic impact treatment technique for welded structures has been accomplished. The comparative tests related to the effects of different types of treatment and applied materials of welded structures on fatigue life have showed the expediency of ultrasonic impact treatment for the prolongation of operation life of products.

Keywords: fatigue life, residual stresses, stress concentrators, ultrasonic impact treatment, welded structures
References: 

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