Next Article in Journal
Parametric Optimization of Trochoidal Step on Surface Roughness and Dish Angle in End Milling of AISID3 Steel Using Precise Measurements
Next Article in Special Issue
Double Crack Damage Identification of Welded Steel Structure Based on LAMB WAVES of S0 Mode
Previous Article in Journal
Old Molecule, New Chemistry: Exploring Silicon Phthalocyanines as Emerging N-Type Materials in Organic Electronics
Previous Article in Special Issue
Experimental Investigation on Friction and Wear Behavior of the Vertical Spindle and V-belt of a Cotton Picker
Open AccessArticle

Determination of the Enhancement or Shielding Interaction between Two Parallel Cracks under Fatigue Loading

Department of Chemical Mechanics Engineering, Beijing University of Chemical Technology, Beijing 100029, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(8), 1331; https://doi.org/10.3390/ma12081331
Received: 20 March 2019 / Revised: 11 April 2019 / Accepted: 22 April 2019 / Published: 24 April 2019
(This article belongs to the Special Issue Damage and Mechanical Properties of Steels)
In this paper, the interactions between two parallel cracks are investigated experimentally and numerically. Finite element models have been established to obtain the stress intensity factors and stress distributions of the parallel cracks with different positions and sizes. Fatigue crack growth tests of 304 stainless steel specimens with the single crack and two parallel cracks have been conducted to confirm the numerical results. The numerical analysis results indicate that the interactions between the two parallel cracks have an enhancement or shielding effect on the stress intensity factors, depending on the relative positions of the cracks. The criterion diagram to determine the enhancement or shielding effect between two parallel cracks is obtained. The changes of the stress fields around the cracks have been studied to explain the mechanism of crack interactions. View Full-Text
Keywords: parallel cracks; crack interaction; finite element analysis; fatigue parallel cracks; crack interaction; finite element analysis; fatigue
Show Figures

Figure 1

MDPI and ACS Style

Han, Z.; Qian, C.; Tang, L.; Li, H. Determination of the Enhancement or Shielding Interaction between Two Parallel Cracks under Fatigue Loading. Materials 2019, 12, 1331.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop