{"title":"Effect Mechanism of Water Jet Peening on Surface Integrity and Ultrahigh-Cycle Fatigue Performance of “Sandwich” Laminates","authors":"Ping Zhang, Yeran Gao, Xiaomin Jiang, Yan Yu","doi":"10.1111/ffe.14633","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>This study investigates the effect mechanism of water jet peening (WJP) on the surface integrity and fatigue performance of CoCrFeNiAl/Al6061 laminate composites. Through experiments and finite element simulations, the following results were obtained: At a jet velocity of 300 mm/s, significant plastic deformation was observed in the core layer, and the maximum residual compressive stress increased from 679 MPa at 250 mm/s to 802 MPa, indicating that higher jet velocity promotes the development of residual stress. Core layer thickness plays a crucial role in fatigue life; specimens with a 1-mm-thick core layer exhibited lower fatigue life, while a 2-mm-thick core layer showed significant improvement. The jet velocity of 300 mm/s was the most effective in enhancing fatigue life.</p>\n </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"2834-2847"},"PeriodicalIF":3.1000,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fatigue & Fracture of Engineering Materials & Structures","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14633","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
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Abstract
This study investigates the effect mechanism of water jet peening (WJP) on the surface integrity and fatigue performance of CoCrFeNiAl/Al6061 laminate composites. Through experiments and finite element simulations, the following results were obtained: At a jet velocity of 300 mm/s, significant plastic deformation was observed in the core layer, and the maximum residual compressive stress increased from 679 MPa at 250 mm/s to 802 MPa, indicating that higher jet velocity promotes the development of residual stress. Core layer thickness plays a crucial role in fatigue life; specimens with a 1-mm-thick core layer exhibited lower fatigue life, while a 2-mm-thick core layer showed significant improvement. The jet velocity of 300 mm/s was the most effective in enhancing fatigue life.
期刊介绍：
Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.
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