INVESTIGATION OF FATIGUE BEHAVIOR OF COLLETS WITH MATERIAL STANDARD SAE 4140 AND 50CRMO4 BY ANSYS FINITE ELEMENT METHOD AND FATIGUE TEST DEVICE

Year 2022, Volume: 5 Issue: 1, 1 - 6, 30.06.2022

Oğuzcan Güzelipek Tuğrul Soyusinmez Furkan Çetin

Abstract

In this study, the previously designed SAE 4140 and 50CrMo4 material standard lathe collets was found to be inadequate in terms of service life and the new 50CrMo4 material standard collet was designed. Fatigue tester was designed and manufactured for fatigue analysis to determine the life of the collet. When designing fatigue tester, 2.2 kW Volt motor and Siemens control are used for field usage conditions.
Analyzes were made with ANSYS software then the collets were tested under 25 bar hydraulic pressure and the results were compared. As a result of analysis and fatigue tests, fatigue behaviors of collets were compared.

Keywords

Collet, Hydraulic Pressure, Fatigue, SAE 4140, 50CrMo4, Finite Element Method

References

• Deng H ‐L., Liu H, Liu Q ‐C., Guo Y ‐P., Yu H. Fatigue strength prediction of carburized 12Cr steel alloy: Effects of evaluation of maximum crack sizes and residual stress distribution. Fatigue Fract Eng Mater Struct 2019; ffe.13149.
• Maierhofer J, Pippan R, Gänser HP. Modified NASGRO equation for physically short cracks. Int J Fatigue 2014; 59:200–207.
• Luke M, Varfolomeev I, Lütkepohl K, Esderts A. Fracture mechanics assessment of railway axles: Experimental characterization and computation. Eng Fail Anal 2010; 17:617–623.
• Luke M, Varfolomeev I, Lütkepohl K, Esderts A. Fatigue crack growth in railway axles: Assessment concept and validation tests. Eng Fract Mech 2011; 78:714–730.
• Sander M, Richard HA. Investigations on fatigue crack growth under variable amplitude loading in wheelset axles. Eng Fract Mech 2011; 78:754–763.
• Zerbst U, Schödel M, Beier HT. Parameters affecting the damage tolerance behaviour of railway axles. Eng Fract Mech 2011; 78:793–809.
• Zerbst U, Beretta S, Köhler G, Lawton A, Vormwald M, Beier HT, Klinger C, Černý I, Rudlin J, Heckel T, Klingbeil D. Safe life and damage tolerance aspects of railway axles - A review. Eng Fract Mech 2013; 98:214–271.
• Zerbst U, Klinger C, Klingbeil D. Structural assessment of railway axles - A critical review. Eng Fail Anal 2013; 35:54–65.
• ŞIK A, Önder M, KORKMAZ MS. Taşıt Jantlarının Yapısal Analiz İle Yorulma Dayanımının Belirlenmesi. Gazi Üniversitesi Fen Bilim Derg Part C, Tasarım Ve Teknol GU J 2015; 3:565–574.
• KARAMANGİL Mİ. Bir Otomobil Arka Dingilinin Sonlu Elemanlar Metodu ile Yorulma Analizi. PAMUKKALE Univ Eng Fac J Eng Sci 2007; 13:311–318.
• ŞIK A. MIG/MAG Kaynak Yöntemi ile Birleştirilen Çelik Malzemelerde İlave Tel Türleri ve Koruyucu Gaz Karışımlarının Eğmeli Yorulma Ömürlerine Etkilerinin Araştırılması. Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Derg 2013; 22:769–777.
• Babuška I, Sawlan Z, Scavino M, Szabó B, Tempone R. Spatial Poisson processes for fatigue crack initiation. Comput Methods Appl Mech Eng 2019; 345:454–475.
• Campbell FC. Elements of Metallurgy and Engineering Alloys. 2008.
• Tosun K. Yapı Malzemesi-I. no date; .
• Stephens RI, Fatemi A, Stephens RR, Fuchs HO. Metal Fatigue in Engineering. Wiley & Sons, Inc.; 2000.
• Gençoğlu O. Malzemelerde Yorulma Davranışı. 2013; .
• Krupp U. Fatigue Crack Propagation in Metals and Alloys. Wiley-VCH; 2007.
• Glodež S, Šori M, Kramberger J. A statistical evaluation of micro-crack initiation in thermally cut structural elements. Fatigue Fract Eng Mater Struct 2013; 36:1298–1305.