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Crack in an Inlet Manifold

  • D. M. Jurkschat and I. Heiermann
Published/Copyright: April 11, 2014
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Practical Metallography
From the journal Practical Metallography Volume 51 Issue 4

Abstract

During the inspection, following a test run for component development purposes, a crack was discovered in the inlet manifold on a diesel generator. On closer inspection a fatigue crack was found in the ribbed section of the manifold. The failure mechanism initiated at an discontinuity of identical material in the cross section of the component, which acted as an internal stress raiser thus initiating the start of the fatigue crack.

Kurzfassung

Eine Bauteilinspektion zeigte einen Riss an einem Saugrohr für ein Diesel-Aggregat nach Durchlaufen eines Testlaufs während der Bauteilentwicklung. Es wurde ein Schwingriss im Bereich eines Rippenauslaufes festgestellt. Auslöser für den Versagensmechanismus war ein dem Grundwerkstoff artgleicher Einschluss im Bauteilquerschnitt, der über seine innere Kerbwirkung zu einer lokalen Spannungsüberhöhung und damit rissinitiierend gewirkt hat.

Translation: Phil Tate

References / Literatur

[1] Kammer, C.: Aluminium-Taschenbuch, Band 1, 16. Auflage, Aluminium-Verlag, Düsseldorf, Deutschland,2002, S. 100ffSearch in Google Scholar

[2] Salbert, G.: Metallographie, Materialkundlich-Technische Reihe 14, Gebrüder Bornsträger, Stuttgart, Deutschland, 2010, S. 130ffSearch in Google Scholar

[3] Kleine, A.; KochH.; GarthoffC.; PriesH.; DellemannJ-P.; HoffmannF.; Giesserei99 (2012) 6, 32–39Search in Google Scholar

[4] LangeG.; Systematische Beurteilung technischer Schadensfälle, 5. Auflage, WILEY-VCH Verlag, Weinheim, 2011, S. 103ff und 149ffSearch in Google Scholar

Published Online: 2014-04-11
Published in Print: 2014-04-15

© 2014, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Guest Editorial
  5. Technical Contributions/Fachbeiträge
  6. Comparative Hydrogen Fracturing as a Means to Unambiguously Clarify Failure
  7. Transformation of Delta Ferrite Into Sigma Phase in Metastable Austenitic Stainless Steels After Long-Term High-Temperature Service Exposure
  8. Crack in an Inlet Manifold
  9. Hydrogen in Metals: A Systematic Overview
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
https://doi.org/10.3139/147.110294

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Guest Editorial
  5. Technical Contributions/Fachbeiträge
  6. Comparative Hydrogen Fracturing as a Means to Unambiguously Clarify Failure
  7. Transformation of Delta Ferrite Into Sigma Phase in Metastable Austenitic Stainless Steels After Long-Term High-Temperature Service Exposure
  8. Crack in an Inlet Manifold
  9. Hydrogen in Metals: A Systematic Overview
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
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