journal article·2025-07-18Open access

Use of Machine Learning Algorithms to Predict Almen (Shot Peening) Intensity Values of Various Steel Materials

Murat İnce, Hatice Varol Özkavak

Applied Sciences· Volume 15· Issue 14

Abstract

Wear, fatigue, and corrosion are just a few of the issues that mechanical components in engineering experience, leading to surface deterioration. Enhancing the surface characteristics of engineering components is therefore essential. The surface properties of engineering objects can be improved by applying different surface treatments. One of these processes is shot peening (SP). Process parameters are crucial for SP. This necessitates the optimization of SP process parameters. In this study, we applied SP and vibratory shot peening (VSP) processes to different steel materials (AISI 8620, AISI 5140, AISI 4140, and AISI 1020) using different process parameters, aiming to determine the effects of these parameters on hardness, residual stress, and surface roughness. The highest compressive residual stress (CRS) and hardness values for shot-peened samples were obtained at the 24–26 A intensity for all steels. For all steel-group VSP samples, the highest CRS and hardness values were obtained at the 60 s −4 mm parameter. This paper aims to predict Almen intensity values using CRS, surface roughness, and hardness values from various steels. The supplied experimental data was utilized to estimate the SP Almen intensity value using a number of machine learning (ML) methods, eliminating the need for costly and time-consuming experimentation. With an RMSE of 0.0731, R2 of 0.9665, and MAE of 0.0613, the deep neural network (DNN) surpassed the other models in terms of prediction accuracy. The results indicate that artificial intelligence technology could be utilized to accurately evaluate Almen intensity.
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Research context

OpenAlex topics: Surface Treatment and Residual Stress · Advanced machining processes and optimization · Erosion and Abrasive Machining

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Computer Technologies, Technical Sciences Vocational School, Isparta University of Applied Sciences, 32260 Isparta, Turkey

Department of Mechanical and Metal Technology, Technical Sciences Vocational School, Isparta University of Applied Sciences, 32260 Isparta, Turkey

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