Anindito Purnowidodo


Penelitian rambat retak pada poros pejal berbentuk silindris dilakukan dengan cara eksperimen, pengamatan kecepatan dan perilaku rambat retak setelah siklus beban berulang bending overload dilakukan dengan mengamati retak yang merambat pada permukaan specimen yang berbentuk poros pejal.

Dari hasil penelitian ini diketahui bahwa terdapat perbedaan perilaku rambat retak antara specimen tanpa overload dan dengan overload. Pada specimen dengan diameter 8 mm, setelah overload umur retak bertambah pendek dan kecepatan retak meningkat. Pada specimen dengan diameter 9 mm, setelah overload umur retak akan bertambah panjang dan kecepatan retak akan menurun. Perilaku rambat retak setelah overload pada poros pejal tergantung dari ukuran diameter. Kemungkinan penyebabnya adalah berhubungan dengan arah rambat retak dibawah permukaan specimen.


Kata kunci : Rambat Retak, Poros Pejal, Overload

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Bao, H. and McEvily, A. J. “The Effect of Overload on the Rate of Crack Propagation under Plane Stress Conditions.” Metallurgical and Materials, Vol. 26A, 1995, pp.1725-1733.

Barsom, J.M., Rofle, S.T., “Fracture and Fatigue Control in Structure.” Appliaction of Fracture Mechanics, ASTM,MNL41, 1999.

Brooks, C.R., Choudhury A, "Failure Analysis of Engineering Materilas", Professional Engineering, 2002.

Carter, Tim J., "Common Failures in Gas Turbine Blades", Engineering Failure Analysis, Vol. 12, 2005, pp. 237–247.

Elber, W. “The Significance of Fatigue Crack Closure.” ASTM STP 486. American Society for Testing and Materials, Philadelphia; 1971, pp. 230-242.

Makabe, C., McEvily, A. J., Purnowidodo, A. and Yamauchi, “A. Effects of Negative Stress Ratios on Crack Propagation Behavior after an Overload.” Int. J. Modern Physics. B, Vol.17, 2003, PP.1580-1586.

Makabe, C., Purnowidodo, A. and McEvily, A. J. Effects of Surface Deformation and Crack Closure on Fatigue Crack Propagation after Overloading and Underloading, “ Int. J. Fatigue, Vol.26, 2004, pp.1341-1348

Makabe C., Purnowidodo, A., Miyazaki, T., and McEvily, Arthur J. “Deceleration and Acceleration of Crack Propagation after an Overloading under Negative Baseline Stress Ratio”, Journal of Testing and Evaluation, American Society Testing Material, Vol. 33, 181-187, 2005.

McEvily, A. J. and Yang, Z. “The Nature of the Two Opening Levels Following an Overload in Fatigue Crack Growth.” Metallurgical Transactions, Vol.21A, 1990, pp.2717-2727.

McEvily, A. J., Ishihara, S., Mutoh, Y., “On the Number of Overload-Induced Delay Cycles as Function of Thickness ” Int. J. Fatigue, Vol.26, 2004, pp.1311-1319, (A).

McEvily, A.J., "Failures in Inspection Procedures: Case Studies", Engineering Failure Analysis, Vol. 11, 2004, pp. 167–176, (B).

Purnowidodo, A., Choiron, M. A., “ Effect of Static Overload on Fatigue Crack Propagation and Fatigue Life on Engineering Materials”, Proceeding, Callobaration Workshop on Energy, Environment and New Trend in Mechanical Engineering, Brawijaya University and Keio University, 2003, pp. 243-253.

Purnowidodo, A., Makabe, C., Miyazaki, T. , and McEvily, A. J., ” Transition Behavior of Residual Fatigue Life after Applying Overload during Fatigue Crack Growth with Constant Stress Amplitude, ” Pressure Vessel and Piping Codes and Standards, ASME/JSME-PVP, Vol. 480, San Diego, California USA, pp. 39-44 (2004).

Stephens, R.I., Fatemi, A., Stephens, R.R., Fuchs, H.O., “Metal Fatigue in Engineering”,2001.

Topper, T. H. and Lam, T. S., “Derivation of Crack Closure and Effective Fatigue Crack Growth Data from Smooth Specimen Fatigue Test,” Report of Fatigue Branch of the Society of Materials Science, Japan, Vol. 266, 2003, pp. 1-12.

Ward-Close, M., Blom, A. F. and Ritchie, R. O. “Mechanisms Associated with Transient Fatigue Crack Growth under Variable-Amplitude Loading: An Experimental and Numerical Study.” Engineering Fracture Mechanics , Vol. 32, 1989, pp.613-638.



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