Effect of Strain Rate and Material Hardness on Residual Stress in Multiple Impact Shot Peening

Kim, Tae Woo; Yang, Zhaorui; Na, Doo-Hyun; Lee, Young-Seog

doi:10.3795/ksme-a.2011.35.11.1369

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Bagherifard 등 (13) 도 다중수직충돌 해석후 생성된 압흔들로부터 커버리지 계산 식을 제안해 숏볼 개수를 예측했다. 최근 김태우 등 (14) 은 김태형과 이형일 (12) 이 제안한 해석모델을 이용해 재료의 변형률 속도 및 소재의 경도에 따른 피닝효과를 살펴봤다. Hassani-Gangaraj 등 (15) 도 대칭-셀을 이용해 피닝커버리지를 평가했다.…”

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A Optimal 3D FE Model for Evaluation of Peening Residual Stress Under Angled Multi-impacts

Hyun

Kim²,

Lee³

2012

Transactions of the Korean Society of Mechanical Engineers A

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The FE model for shot peening often assume that shots impact vertically on the engineering parts to generate compressive residual stresses. However, the shots obliquely impact on the surface in actual peening. In this work, we propose a 3D finite element (FE) model for evaluation of residual stress under angled shot peening. Using the FE model for angled multi-impact, we examine the effects of factors such as impact angle, impact pattern and the number of shots. Plastic deformation of shot is also considered. To validate the model, we then compare the FE solution with experimental result by X-ray diffraction (XRD). The proposed model will be a base of 3D multi-impact FE model with diverse impact angles. † Corresponding Author, hylee@sogang.ac.kr

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A Optimal 3D FE Model for Evaluation of Peening Residual Stress Under Angled Multi-impacts

Hyun

Kim²,

Lee³

2012

Transactions of the Korean Society of Mechanical Engineers A

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Effects of Shot Peening Projection Pressure on Electrochemical Characteristics of ALBC3 Alloy in Seawater

Han¹,

Im²,

Kim³

2014

Journal of the Korean institute of surface engineering

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The effects of shot peening pressure on electrochemical and surface morphological characteristics of ALBC3 alloy were investigated in this work. The surface hardness of ALBC3 alloy was improved by shot peening process under all shot peening pressures between 2 and 5 bar, and the hight value of surface hardness was observed to be about 420 Hv at 4 bar of the shot peening pressure. The shot peened surface presented very rough surface due to shot ball collision. The result of anodic potentiodynamic polarization in seawater revealed that there is no significant difference between the shot peened and non-shot peened specimen in terms of corrosion characteristics. Therefore, the optimum projection pressure is determined to be 4 bar.

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Effect of Strain Rate and Material Hardness on Residual Stress in Multiple Impact Shot Peening

Cited by 2 publications

References 11 publications

A Optimal 3D FE Model for Evaluation of Peening Residual Stress Under Angled Multi-impacts

A Optimal 3D FE Model for Evaluation of Peening Residual Stress Under Angled Multi-impacts

Effects of Shot Peening Projection Pressure on Electrochemical Characteristics of ALBC3 Alloy in Seawater

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