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All Journal Semesta Teknika Energi & Kelistrikan
Sahlan Sahlan
Sekolah Tinggi Teknik PLN
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Journal : Energi

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MODEL SIMULASI UNTUK MENGAMATI PENGARUH TEGANGAN TARIK-SISA SILINDER AUTOFRETTAGE LARAS SENAPAN Sahlan Sahlan
Energi & Kelistrikan Vol 7 No 1 (2015): Energi & Kelistrikan
Publisher : Sekolah Tinggi Teknik PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (920.027 KB) | DOI: 10.33322/energi.v7i1.586

Abstract

The analysis of autofrettage on fatigue-crack propagation of crack are well documented, that is experimental work shows the effects of positive stress ratio or tensile-minimum stress during thefatigue cycles on the fatigue-crack inition from holes. This simulates model the effect of the residual-tensile stresses at the outside surface of autofrettage cylinders. S-N curves and modifiedGoodman diagrams are shown for fatigue-crack inition. This allows a tremendous advantage in retarding crack initiation and propagation in the early stages of crack growth, wich accounts for thedramatic increases in useful service life for an autofrettage cylinder compared to a nonautofrettaged cylinder.
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