Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes

This work is primarily concerned with the fatigue life of high-pressure-bearing components with intersecting holes, typically used in Diesel engine fuel injection systems. The investigation focuses on specimens with intersecting holes that have undergone the process of Autofrettage (single mechanica...

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Autores principales:	Fällgren Carl, Beier Thomas, Vormwald Michael, Kleemann Andreas
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/1070e359e2534183b3602d5ea4e9de32
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spelling	oai:doaj.org-article:1070e359e2534183b3602d5ea4e9de322021-12-02T17:13:46ZAutofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes2261-236X10.1051/matecconf/202134904004https://doaj.org/article/1070e359e2534183b3602d5ea4e9de322021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04004.pdfhttps://doaj.org/toc/2261-236XThis work is primarily concerned with the fatigue life of high-pressure-bearing components with intersecting holes, typically used in Diesel engine fuel injection systems. The investigation focuses on specimens with intersecting holes that have undergone the process of Autofrettage (single mechanical overload), which is typically used to extend the fatigue life of components loaded by cyclic internal pressure. The resulting residual stress distribution thus influences the fatigue failure and especially the crack propagation behaviour of the components. In previous works, results showed that besides crack initiation, crack arrest behaviour has to be taken into account when calculating fatigue lives of autofrettaged specimens as the endurance limit is otherwise underestimated. In order to achieve reliable results, material testing with samples made of the ultra high strength steel W360 was performed. The resulting test data were used to simulate the Autofrettage process with finite-element analysis. Calculated residual stress distributions were used to determine at which levels of subsequent cyclic loading crack initiation would occur. For predicted crack initiation, the simulated residual stress distribution was used to investigate the crack propagation behaviour with fracture mechanics based approaches of different complexity in order to identify possible crack arrest or crack propagation. Calculated results were compared to experimental test data from component-like specimens. The comparison showed that the fracture mechanics based approaches are capable of describing the crack arrest and propagation behaviour reliably.Fällgren CarlBeier ThomasVormwald MichaelKleemann AndreasEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 04004 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Fällgren Carl Beier Thomas Vormwald Michael Kleemann Andreas Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
description	This work is primarily concerned with the fatigue life of high-pressure-bearing components with intersecting holes, typically used in Diesel engine fuel injection systems. The investigation focuses on specimens with intersecting holes that have undergone the process of Autofrettage (single mechanical overload), which is typically used to extend the fatigue life of components loaded by cyclic internal pressure. The resulting residual stress distribution thus influences the fatigue failure and especially the crack propagation behaviour of the components. In previous works, results showed that besides crack initiation, crack arrest behaviour has to be taken into account when calculating fatigue lives of autofrettaged specimens as the endurance limit is otherwise underestimated. In order to achieve reliable results, material testing with samples made of the ultra high strength steel W360 was performed. The resulting test data were used to simulate the Autofrettage process with finite-element analysis. Calculated residual stress distributions were used to determine at which levels of subsequent cyclic loading crack initiation would occur. For predicted crack initiation, the simulated residual stress distribution was used to investigate the crack propagation behaviour with fracture mechanics based approaches of different complexity in order to identify possible crack arrest or crack propagation. Calculated results were compared to experimental test data from component-like specimens. The comparison showed that the fracture mechanics based approaches are capable of describing the crack arrest and propagation behaviour reliably.
format	article
author	Fällgren Carl Beier Thomas Vormwald Michael Kleemann Andreas
author_facet	Fällgren Carl Beier Thomas Vormwald Michael Kleemann Andreas
author_sort	Fällgren Carl
title	Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
title_short	Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
title_full	Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
title_fullStr	Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
title_full_unstemmed	Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
title_sort	autofrettage of component-like ultra high strength steel specimens with intersecting holes
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/1070e359e2534183b3602d5ea4e9de32
work_keys_str_mv	AT fallgrencarl autofrettageofcomponentlikeultrahighstrengthsteelspecimenswithintersectingholes AT beierthomas autofrettageofcomponentlikeultrahighstrengthsteelspecimenswithintersectingholes AT vormwaldmichael autofrettageofcomponentlikeultrahighstrengthsteelspecimenswithintersectingholes AT kleemannandreas autofrettageofcomponentlikeultrahighstrengthsteelspecimenswithintersectingholes
_version_	1718381304677924864

Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes

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