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Peening

About: Peening is a research topic. Over the lifetime, 5538 publications have been published within this topic receiving 73073 citations.


Papers
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Journal ArticleDOI
Wu Liujun1, K.Y. Luo1, Yuan Liu1, C.Y. Cui1, Xue Wei2, J.Z. Lu1 
TL;DR: In this paper, the effects of laser shock peening (LSP) on the micro-hardness distribution and fractural morphologies of tensile specimens manufactured from commercial pure titanium (CP-Ti) at four different temperatures were investigated.

50 citations

Journal ArticleDOI
TL;DR: In this paper, six contemporary developments are described, which are representative of advances in corrosion protection, fatigue life extension, metal matrix composite (MMC) based new design, and enhanced temperature capabilities by ceramic protective coatings.
Abstract: The long service life, often in harsh environmental conditions, and the stringent requirements of lightweight design make surface modification an essential part of materials technology for aerospace applications. Six contemporary developments are described, which are representative of advances in corrosion protection, fatigue life extension, metal matrix composite (MMC) based new design, and enhanced temperature capabilities by ceramic protective coatings. Coatings and corrosion inhibitors for aluminium skinned aircraft provide survivability, corrosion protection, and cosmetic appearance. Environmental concern on the presently used chromate have led to developments of self-priming topcoats, flexible primers, e.g. based on self-assembling silane molecules, temporary and multifunctional coatings. Fatigue life of titanium parts is shown to be enhanced by laser shock peening introducing compressive surface stresses. Preventing the onset of fatigue cracking from surfaces of titanium alloys and titanium...

50 citations

Journal ArticleDOI
TL;DR: The residual stresses induced in steel specimen type C-1020 by applying various strengths of shot peening, are investigated using the electrochemical layer removal method and the results are obviously within acceptable uncertainties.
Abstract: This study consists of two cases: (i) The experimental analysis: Shot peening is a method to improve the resistance of metal pieces to fatigue by creating regions of residual stress. In this study, the residual stresses induced in steel specimen type C-1020 by applying various strengths of shot peening, are investigated using the electrochemical layer removal method. The best result is obtained using 0.26mmA peening strength and the stress encountered in the shot peened material is -276MPa, while the maximum residual stress obtained is -363MPa at a peening strength of 0.43mmA. (ii) The mathematical modelling analysis: The use of ANN has been proposed to determine the residual stresses based on various strengths of shot peening using results of experimental analysis. The back-propagation learning algorithm with two different variants and logistic sigmoid transfer function were used in the network. In order to train the neural network, limited experimental measurements were used as training and test data. The best fitting training data set was obtained with four neurons in the hidden layer, which made it possible to predict residual stress with accuracy at least as good as that of the experimental error, over the whole experimental range. After training, it was found the R^2 values are 0.996112 and 0.99896 for annealed before peening and shot peened only, respectively. Similarly, these values for testing data are 0.995858 and 0.999143, respectively. As seen from the results of mathematical modelling, the calculated residual stresses are obviously within acceptable uncertainties.

50 citations

Journal ArticleDOI
TL;DR: In this paper, a β-titanium alloy Timetal 21s with two oxygen contents (0.15 and 0.30 wt%), in two solution treated conditions (fully and partially recrystallized) was aged at temperatures between 350 and 500°C after shot peening.
Abstract: Selective surface aging treatments (mechanical surface treatment followed by aging) on β-titanium alloys can result in higher endurance limits than conventional mechanical surface treatments. An explanation of fatigue behaviour of selectively surface aged parts should not only consider preferential precipitation strengthening but also take into account the remaining residual stresses. The β-titanium alloy Timetal 21s with two oxygen contents (0.15 and 0.30 wt%), in two solution treated conditions (fully and partially recrystallized) was aged at temperatures between 350 and 500°C after shot peening. Microhardness and X-Ray measurements allowed the determination of the degree of precipitation strengthening and relaxation of residual stresses, respectively, in the near surface regions during aging.

50 citations

Journal ArticleDOI
TL;DR: In this article, the effects of shot peening and cavitation peening on the bending fatigue strength of the 7075 aluminum alloy with a crack-like surface defect were investigated.

50 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023256
2022500
2021282
2020303
2019340
2018305