The Reduction of Stress Concentration at a Crack Tip Using Multi Stop-Drilled Hole (MSDH)

  • Hendery Dahlan Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas Padang, 25163 Sumatera Barat, Indonesia
  • Meifal Rusli Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas Padang, 25163 Sumatera Barat, Indonesia
  • Mulyadi Bur Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas Padang, 25163 Sumatera Barat, Indonesia
DOI: http://dx.doi.org/10.36842/jomase.v55i1.54

Abstract

A new shape of stop-drilled hole is proposed in which triple stop-drilled holes called Multi Stop Drilled Hole (MSDH) are drilling at the crack tip. The main objective of the proposing method is to reduce stress concentration at the edge of the stop holes. Reducing the stress concentration factor at the crack tip is the main issue to arrest the crack growth. In this study, a numerical methodology using finite element analysis with linear elastic behaviour assumption is considered to study the effect of the stop-drilled hole on the reduction of stress concentration at crack tip. The variation number of stop-drilled hole and hole diameter at the crack tip corresponding to the stress concentration will be investigated. It reveals that the number of stop-drilled holes significantly influenced to reduce the stress concentration factor. Increasing the number of the stop-drilled holes will reduce the stress concentration factor. Furthermore, the diameter of stop hole significantly affects the decreasing stress concentration. The increasing value diameter of the stop-drilled hole will reduce the stress concentration. In the meantime, the triple-drilled hole has the highest percentages of decreasing stress concentration and the lowest stress concentration comparing to single and double stop-drilled hole.

##Keywords:## Crack Growth Arrest, Stop Hole, Stress Concentration
Published
Oct 9, 2018
How to Cite
DAHLAN, Hendery; RUSLI, Meifal; BUR, Mulyadi. The Reduction of Stress Concentration at a Crack Tip Using Multi Stop-Drilled Hole (MSDH). Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 55, n. 1, p. 6-10, oct. 2018. ISSN 2527-6085. Available at: <https://isomase.org/Journals/index.php/jomase/article/view/54>. Date accessed: 03 june 2026. doi: http://dx.doi.org/10.36842/jomase.v55i1.54.
Citation Formats
Issue
Vol 55 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Section
Articles
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