{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T04:54:23Z","timestamp":1762145663374,"version":"build-2065373602"},"reference-count":42,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2021,8,10]],"date-time":"2021-08-10T00:00:00Z","timestamp":1628553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/00285\/2020"],"award-info":[{"award-number":["UIDB\/00285\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>In this work, local properties such as hardness and fatigue crack grow rate in the heat-affected zone of four laser-welded butt joints in thin high-strength low-alloy steel were examined, so as to explain and predict fatigue lives at high stress levels through the fracture mechanics approach. The different welded series presented a similar fatigue crack growth rate in the heat-affected and fusion zones, but lower than base metal due to the higher hardness of the bainitic\u2013martensitic microstructure verified in the welded series. The results showed that at high stress levels in the as-welded condition, the fatigue initiation stage can be neglected and assume some types of cracks, with an initial crack of 0.07 mm and appropriate fatigue crack growth rates, estimates of fatigue life close to the experimental results were obtained.<\/jats:p>","DOI":"10.3390\/app11167346","type":"journal-article","created":{"date-parts":[[2021,8,10]],"date-time":"2021-08-10T08:57:14Z","timestamp":1628585834000},"page":"7346","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Influence of Local Properties on Fatigue Crack Growth of Laser Butt Welds in Thin Plates of High-Strength Low-Alloy Steel"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0204-6075","authenticated-orcid":false,"given":"Patricio G.","family":"Riofr\u00edo","sequence":"first","affiliation":[{"name":"Departamento de Ciencias de la Energ\u00eda y Mec\u00e1nica, Universidad de las Fuerzas Armadas-ESPE, Av. General Rumi\u00f1ahui S\/N, Sangolqui 171103, Ecuador"},{"name":"Centre for Mechanical Engineering, Department of Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3004-516 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7133-2331","authenticated-orcid":false,"given":"Joel","family":"de Jesus","sequence":"additional","affiliation":[{"name":"Centre for Mechanical Engineering, Department of Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3004-516 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0295-1841","authenticated-orcid":false,"given":"Jos\u00e9 A. M.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Centre for Mechanical Engineering, Department of Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3004-516 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3334-4945","authenticated-orcid":false,"given":"Carlos","family":"Capela","sequence":"additional","affiliation":[{"name":"Centre for Mechanical Engineering, Department of Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3004-516 Coimbra, Portugal"},{"name":"Department of Mechanical Engineering, Polytechnic Institute of Leiria, School Tech and Management, Morro do Lena-Alto Vieiro, 2400-901 Leiria, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,8,10]]},"reference":[{"key":"ref_1","unstructured":"Maddox, S.J. (2002). Fatigue Strength of Welded Structures, Abington Publishing."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Fricke, W. (2011). Fatigue strength assessment of local stresses in welded joints. Fracture and Fatigue of Welded Joints and Structures, Woodhead Publishing.","DOI":"10.1533\/9780857092502.2.115"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1007\/BF03266658","article-title":"Effect of Weld Quality and Postweld Improvement Techniques on the Fatigue Resistance of Extra High Strength Steels","volume":"52","author":"Lieurade","year":"2008","journal-title":"Weld. World"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1016\/j.proeng.2013.12.072","article-title":"Diode laser weld toe re-melting as a means of fatigue strength improvement in high strength steels","volume":"66","author":"Gerritsen","year":"2013","journal-title":"Procedia Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1259","DOI":"10.1016\/j.ijfatigue.2003.08.020","article-title":"Residual stress modification by post-weld treatment and its beneficial effect on fatigue strength of welded structures","volume":"25","author":"Cheng","year":"2003","journal-title":"Int. J. Fatigue"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"454","DOI":"10.1016\/j.proeng.2015.12.615","article-title":"Understanding of fatigue strength improvement of steel structures by hammer peening treatment","volume":"133","author":"Lefebvre","year":"2015","journal-title":"Procedia Eng."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"98","DOI":"10.1016\/j.proeng.2013.12.066","article-title":"A guideline for fatigue strength improvement of high strength steel welded structures using high frequency mechanical impact treatment","volume":"66","author":"Marquis","year":"2013","journal-title":"Procedia Eng."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Hobbacher, A.F. (2016). Recommendations for Fatigue Design of Welded Joints and Components, Springer.","DOI":"10.1007\/978-3-319-23757-2"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Maddox, S. (2011). Fatigue Design Rules for Welded Structures, in Fracture and Fatigue of Welded Joints and Structures, Woodhead Publishing.","DOI":"10.1533\/9780857092502.2.168"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"731","DOI":"10.1007\/s40194-016-0326-8","article-title":"Influence of weld quality on the fatigue strength of thin normal and high strength steel butt joints","volume":"60","author":"Remes","year":"2016","journal-title":"Weld. Word"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1080\/09507119609548979","article-title":"Fatigue strength of welded joints in high strength steel Effects of stress concentration factor and welding residual stress","volume":"10","author":"Watanabe","year":"1996","journal-title":"Weld. Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1016\/j.ijfatigue.2015.03.023","article-title":"The relative effects of residual stresses and weld toe geometry on fatigue life of weldments","volume":"77","author":"Harati","year":"2015","journal-title":"Int. J. Fatigue"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"453","DOI":"10.1016\/0013-7944(96)00024-0","article-title":"The Effect of Undercut and Residual Stresses on Fatigue Behaviour of Misaligned Butt Joints","volume":"55","author":"Nguyen","year":"1996","journal-title":"Eng. Fract. Mech."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"409","DOI":"10.1016\/j.ijfatigue.2018.06.050","article-title":"Effect of weld toe geometry on fatigue life of lap fillet welded ultra-high strength steels joints","volume":"116","author":"Shiozaki","year":"2018","journal-title":"Int. J. Fatigue"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1016\/j.engfracmech.2017.09.010","article-title":"Fracture-mechanics based prediction of the fatigue strength of weldments. Material aspects","volume":"198","author":"Kucharczyk","year":"2018","journal-title":"Eng. Fract. Mech."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"619","DOI":"10.1016\/j.engfailanal.2003.06.006","article-title":"Influences of MMR, PWHT and notch location on fatigue life of HSLA steel welds","volume":"11","author":"Ravi","year":"2004","journal-title":"Eng. Fail. Anal."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"224","DOI":"10.1016\/j.engfracmech.2018.03.016","article-title":"Understanding of fatigue crack growth behavior in welded joint a new generation Ni-Cr-Mo-V high strength steel","volume":"194","author":"Wang","year":"2018","journal-title":"Eng. Fract. Mech."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Gurney, T. (2006). Cumulative Damage of Welded Joints, Woodhead Publishing Ltd.","DOI":"10.1533\/9781845691035"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1016\/j.ijfatigue.2012.02.004","article-title":"Fatigue behavior prediction of welded joints by using an integrated fracture mechanics approach","volume":"43","author":"Chapetti","year":"2012","journal-title":"Int. J. Fatigue"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1124","DOI":"10.1016\/j.ijfatigue.2009.01.003","article-title":"Fatigue life prediction for toe ground welded joints","volume":"31","author":"Zhang","year":"2009","journal-title":"Int. J. Fatigue"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1007\/s40194-018-00676-y","article-title":"Fatigue assessment of the welded joints containing process relevant imperfections","volume":"63","author":"Javaheri","year":"2019","journal-title":"Weld. World"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"340","DOI":"10.1016\/j.engfailanal.2018.07.017","article-title":"Fracture mechanics based estimation of fatigue lives of laser welded joints","volume":"93","author":"Goyal","year":"2018","journal-title":"Eng. Fail. Anal."},{"key":"ref_23","unstructured":"Murakami, Y. (2002). Metal Fatigue: Effects of Small Defects and Nonmetallic Inclusions, Elsevier Science Ltd."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"351","DOI":"10.1016\/j.prostr.2017.11.099","article-title":"Fatigue strength evaluation of small defect at stress concentration","volume":"7","author":"Tanaka","year":"2017","journal-title":"Struct. Integr. Procedia"},{"key":"ref_25","unstructured":"FITNET (2008). FITNET Fitness-for-Service. Vol. II Annex, FITNET."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Zerbst, U., Madia, M., Schork, B., Hensel, J., Kucharczyk, P., Ngoula, D., Tchuindjang, D., Bernhard, J., and Beckmann, C. (2019). Fatigue and Fracture of Weldments, Springer.","DOI":"10.1007\/978-3-030-04073-4"},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Riofr\u00edo, P., Capela, C., and Ferreira, J. (2021). Imperfections and Modelling of the Weld Bead Profile of Laser Butt Joints in HSLA Steel Thin Plate. Metals, 11.","DOI":"10.3390\/met11010151"},{"key":"ref_28","unstructured":"ISO (1996). Welding-Electron and Laser-Beam Welded Joints-Guidance on Quality Levels for Imperfections. Part 1: Steel, ISO. ISO 13919-1(1996)."},{"key":"ref_29","first-page":"665","article-title":"Interactions of the process parameters and mechanical properties of laser butt welds in thin high strength low alloy steel plates","volume":"234","author":"Capela","year":"2020","journal-title":"J. Mater. Des. Appl."},{"key":"ref_30","unstructured":"ASTM International (2013). Standard Test Method for Measurement of Fatigue Crack Growth Rates. E647-13a (2013), ASTM International."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"917","DOI":"10.1111\/j.1460-2695.1995.tb00916.x","article-title":"Fatigue Crack Closure Measurements on 2024-T3 Sheet Specimens","volume":"18","author":"Yisheng","year":"1995","journal-title":"Fatigue Fract. Eng. Mater. Struct."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"S113","DOI":"10.1016\/S0142-1123(99)00062-6","article-title":"Superior fatigue crack growth properties in newly developed weld metal","volume":"21","author":"Ohta","year":"1999","journal-title":"Int. J. Fatigue"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"531","DOI":"10.1016\/0142-1123(95)00049-6","article-title":"Importance of toe irregularity for fatigue resistance of automatic welds","volume":"17","author":"Chapetti","year":"1995","journal-title":"Int. J. Fatigue"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"875","DOI":"10.1016\/j.msea.2012.09.036","article-title":"Fatigue crack growth behaviors in hot-rolled low carbon steels: A comparison between ferrite\u2013pearlite and ferrite\u2013bainite microstructures","volume":"559","author":"Guan","year":"2013","journal-title":"Mater. Sci. Eng. A"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1016\/j.msea.2014.06.002","article-title":"Effects of microstructure on fatigue crack growth behavior in cold-rolled dual phase steels","volume":"612","author":"Li","year":"2014","journal-title":"Mater. Sci. Eng. A"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/0142-1123(89)90041-8","article-title":"The significance of weld toe undercuts in the fatigue of steel plate T-joints","volume":"11","author":"Bell","year":"1989","journal-title":"Int. J. Fatigue"},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Kim, D.Y., Hwang, I., Jeong, G., Kang, M., Kim, D., Seo, J., and Kim, Y. (2018). Effect of Porosity on the Fatigue Behavior of Gas Metal Arc Welding Lap Fillet Joint in GA 590 MPa Steel Sheets. Metals, 8.","DOI":"10.3390\/met8040241"},{"key":"ref_38","first-page":"23","article-title":"Assessment of the effect of isolated porosity defects on the fatigue performance of additive manufactured titanium alloy","volume":"433\u2013442","author":"Biswal","year":"2018","journal-title":"Addit. Manuf."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1111\/j.1460-2695.1994.tb00239.x","article-title":"Fatigue Predictions and Scatter","volume":"17","author":"Schijve","year":"1994","journal-title":"Fatigue Fract. Eng. Mater. Struct."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"669","DOI":"10.1111\/j.1460-2695.1996.tb01312.x","article-title":"Early Development of Fatigue Cracking at Manual Fillet Welds","volume":"19","author":"Verreman","year":"1996","journal-title":"Fatigue Fract. Eng. Mater. Struct."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1115\/1.3443649","article-title":"Fatigue Crack Growth Model for Part-Througn Flaws in Plates and Pipes","volume":"101","author":"Nair","year":"1979","journal-title":"J. Eng. Mater. Technol."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"207","DOI":"10.1111\/ffe.12485","article-title":"New weld toe magnification factors for semi-elliptical cracks in plate-to-plate butt-welded joints","volume":"40","author":"Lie","year":"2016","journal-title":"Fatigue Fract. Eng. Mater. 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