Fabrication and finite element simulation of micro-laser shock peening for micro dents

Michael P. Sealy; Y. B. Guo

doi:10.1080/15502280802665975

Fabrication and finite element simulation of micro-laser shock peening for micro dents

Michael P. Sealy, Y. B. Guo

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

An innovative surface treatment process micro laser shock peening ( -LSP) has been developed in this study to fabricate micro dents on Ti-6Al-4V surfaces for improving tribology performance. A 3D finite element simulation model was also developed to investigate transient laser/material interactions at nano timescale during peening. The dynamic mechanical behavior was modeled using a user material subroutine of the internal state variable plasticity model. The temporal and spatial peening pressure was modeled using a user load subroutine. The simulated dent geometry agrees with the measured ones in terms of profile and depth. The results suggested that there is an optimal peening time for the deepest dent. The maximum transient stress in peening direction occurred at a certain pulse time.

Original language	English (US)
Pages (from-to)	134-142
Number of pages	9
Journal	International Journal for Computational Methods in Engineering Science and Mechanics
Volume	10
Issue number	2
DOIs	https://doi.org/10.1080/15502280802665975
State	Published - Mar 2009
Externally published	Yes

Keywords

FEA
Laser Shock Peening
Mechanical Behavior
Shock Pressure
Surface Texture

ASJC Scopus subject areas

Computational Mechanics
Computational Mathematics

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10.1080/15502280802665975

Cite this

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title = "Fabrication and finite element simulation of micro-laser shock peening for micro dents",

abstract = "An innovative surface treatment process micro laser shock peening ( -LSP) has been developed in this study to fabricate micro dents on Ti-6Al-4V surfaces for improving tribology performance. A 3D finite element simulation model was also developed to investigate transient laser/material interactions at nano timescale during peening. The dynamic mechanical behavior was modeled using a user material subroutine of the internal state variable plasticity model. The temporal and spatial peening pressure was modeled using a user load subroutine. The simulated dent geometry agrees with the measured ones in terms of profile and depth. The results suggested that there is an optimal peening time for the deepest dent. The maximum transient stress in peening direction occurred at a certain pulse time.",

keywords = "FEA, Laser Shock Peening, Mechanical Behavior, Shock Pressure, Surface Texture",

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AU - Sealy, Michael P.

AU - Guo, Y. B.

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AB - An innovative surface treatment process micro laser shock peening ( -LSP) has been developed in this study to fabricate micro dents on Ti-6Al-4V surfaces for improving tribology performance. A 3D finite element simulation model was also developed to investigate transient laser/material interactions at nano timescale during peening. The dynamic mechanical behavior was modeled using a user material subroutine of the internal state variable plasticity model. The temporal and spatial peening pressure was modeled using a user load subroutine. The simulated dent geometry agrees with the measured ones in terms of profile and depth. The results suggested that there is an optimal peening time for the deepest dent. The maximum transient stress in peening direction occurred at a certain pulse time.

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KW - Laser Shock Peening

KW - Mechanical Behavior

KW - Shock Pressure

KW - Surface Texture

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Fabrication and finite element simulation of micro-laser shock peening for micro dents

Abstract

Keywords

ASJC Scopus subject areas

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