Use of response surface methodology for shot peening process optimization of an aircraft structural part
| Autor: | Jai-Hyun Byun, Ung Jeon, Byung-Cheol Shin, Hee-Kweon Yoon, Yong-Seog Nam |
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| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Materials science business.industry Mechanical Engineering Nozzle Peening 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Shot peening Industrial and Manufacturing Engineering Computer Science Applications 020901 industrial engineering & automation Control and Systems Engineering Residual stress Process optimization Response surface methodology 0210 nano-technology Aerospace business Software Intensity (heat transfer) |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 87:2967-2981 |
| ISSN: | 1433-3015 0268-3768 |
| Popis: | The shot peening process causes the surface of metallic parts to become hardened by bombarding it with a stream of small particles called shots, generating compressive residual stress at the material surface and resulting in surface hardening. In the aerospace industry, proper selection and control of peening factors (parameters) is needed to ensure that the Almen intensity is within specifications and full surface coverage. In this study, the effects of four parameters (nozzle distance, pressure, impact angle, and exposure time) on Almen intensity and coverage are investigated. In order to systematically estimate the models of Almen intensity and coverage in terms of the four parameters, a Box-Behnken design with blocking is employed. Based on the estimated quadratic models, optimum peening conditions are determined using the desirability function approach. Additionally, in order to verify the validity of the optimal conditions obtained from experimental results, metallurgical analyses of the shot-peened aerospace structural part were conducted to examine the hardness, surface morphology, and residual stress. |
| Databáze: | OpenAIRE |
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