New crack stop hole shape using structural optimizing technique
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TLDR
In this paper, a non-circular hole shape was used to increase the initial fatigue life for all specimens used, where the nominal area was allowed to vary nominal area using design variables resulting in decreasing the nominal stress in addition to decreasing the stress concentration factor.About:
This article is published in Ain Shams Engineering Journal.The article was published on 2015-09-01 and is currently open access. It has received 27 citations till now. The article focuses on the topics: Stress concentration & Finite element method.read more
Citations
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Review on the performance improvements and non-destructive testing of patches repaired composites
TL;DR: This review discusses the applications of acoustic emission, digital image correlation, infrared thermography technology and X-ray micro-computed tomography in studying the mechanical performance and failure mechanism of repaired structures.
Journal ArticleDOI
Crack stopping in composite adhesively bonded joints through corrugation
TL;DR: In this paper, the effectiveness of corrugation as a crack stopper in composite adhesively bonded joints was investigated by mechanical testing and numerical simulation, and two different joint configurations were studied: the doublecantilever beam (DCB) and the crack-lap shear (CLS) configuration.
Journal ArticleDOI
Crack stop holes in steel bridge decks: Drilling method and effects
TL;DR: In this article, the authors used a compact tension model on a crack stop hole and compared the stress before and after, drilling the hole was compared in terms of stress concentration and stress gradient.
Journal ArticleDOI
An ordinary state-based peridynamic model for toughness enhancement of brittle materials through drilling stop-holes
TL;DR: In this paper, the effects of different-shaped stop-holes with different combinations on crack dynamics in brittle materials were analyzed using the ordinary state-based peridynamic (OSB) analysis.
Journal ArticleDOI
Concurrent use of Z-pins for crack arrest and structural health monitoring in adhesive-bonded composite lap joints
TL;DR: In this article, the concurrent use of Z-pins for crack arrest and structural health monitoring in composite lap joints was investigated, which resulted in a crack arrest capacity 33% higher than the joint's static limit load and produced a residual strength that far exceeded current ultimate loads.
References
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Book
Elementary engineering fracture mechanics
D. Broek,James R. Rice +1 more
TL;DR: In this paper, the authors proposed a method to detect cracks in a crack-penetrization model, based on the Griffith criterion, which is used to detect the presence of a crack at a crack tip.
Book ChapterDOI
Fatigue Resistance of Steels
TL;DR: FATIGUE as discussed by the authors is the progressive, localized, and permanent structural change that occurs in a material subjected to repeated or fluctuating strains at nominal stresses that have maximum values less than (and often much less than) the tensile strength of the material.
Journal ArticleDOI
Stop drilling procedure for fatigue life improvement
P.S. Song,Y.L. Shieh +1 more
TL;DR: In this article, the authors investigated how the stop drilling procedure improved the crack initiation life and the total fatigue life in specimens of 6061-T651 aluminium alloy and AISI 304 stainless steel.