Residual stress measurement on shot peened samples using FIB-DIC

Enrico Salvati, Matteo Benedetti, Tan Sui, Alexander M. Korsunsky

Результат исследований: Глава в книге, отчете, сборнике статейМатериалы для конференциирецензирование

5 Цитирования (Scopus)

Аннотация

Shot peening is an established technique for improving the fatigue resistance of mechanical components by performing a deformation treatment that causes local near surface plastic deformation and introduces a layer of compressive residual stress. The knowledge of the residual stress distribution plays a crucial role in the correct prediction of fatigue life during service in the context of engineering design. Reliable prediction of safe fatigue life requires knowing how the residual stress state obtained after shot peening depends on the sample geometry, e.g. the presence of notches, and how it evolves during cyclic loading. The Focused Ion Beam milling coupled with Digital Image Correlation (DIC) analysis of SEM images (the FIB-DIC method) has been shown to be an efficient technique for stress evaluation at the (sub)micron-scale. The residual stresses in the vicinity of shot-peened rounded notch tips in Al-7075-T651 samples were studied as a function of notch radii (ρ = 2, 0.5, 0.15 mm). The interpretation of the results is aided by comparison with a simple numerical model of eigenstrain cylinder.

Язык оригиналаАнглийский
Название основной публикацииResidual Stress, Thermomechanics and Infrared Imaging, Hybrid Techniques and Inverse Problems - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics
РедакторыGary Schajer, Sven Bossuyt, Alberto Carpinteri
ИздательSpringer New York LLC
Страницы275-283
Число страниц9
ISBN (печатное издание)9783319217642
DOI
СостояниеОпубликовано - 2016
Опубликовано для внешнего пользованияДа
СобытиеSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015 - Costa Mesa, Соединенные Штаты Америки
Продолжительность: 8 июн. 201511 июн. 2015

Серия публикаций

НазваниеConference Proceedings of the Society for Experimental Mechanics Series
Том9
ISSN (печатное издание)2191-5644
ISSN (электронное издание)2191-5652

Конференция

КонференцияSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015
Страна/TерриторияСоединенные Штаты Америки
ГородCosta Mesa
Период8/06/1511/06/15

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