Monitoring of inside surface crack growth by strain measurements of the outside surface: Application of multiple strain measurements technique to fatigue crack growth

2013 ◽  
Vol 256 ◽  
pp. 202-213 ◽  
Author(s):  
Masayuki Kamaya
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Surface Crack ◽  
Inside Surface ◽  
Strain Measurements ◽  
Surface Application ◽  
Surface Crack Growth

scholarly journals Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell

2021 ◽  
Vol 9 (11) ◽  
pp. 1280
Author(s):  
Yongmei Zhu ◽  
Rujun Li ◽  
Jiahao Yang
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Spherical Shell ◽  
Crack Growth ◽  
Maraging Steel ◽  
Surface Crack ◽  
Three Dimensional ◽  
Spherical Pressure ◽  
Surface Crack Growth ◽  
Dimensional Surface

This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained. Considering the influence of plastic closure effect and sample thickness on crack growth, the fitting formula of fatigue crack growth only related to materials was obtained. Based on the three-dimensional crack closure theory and the strip yield model, a three-dimensional surface crack growth model of spherical pressure shell was established. By using a self-written program and FRANC3D, the three-dimensional surface crack growth simulations of the spherical shell were completed. The influence of the initial shape ratio and initial depth of the crack on the crack growth and the fatigue life of the spherical shell was analyzed.

Fatigue crack growth of filament wound GRP pipes with a surface crack under cyclic internal pressure

2008 ◽  
Vol 43 (16) ◽  
pp. 5569-5573 ◽  
Author(s):  
Ahmet Samanci ◽  
Ahmet Avci ◽  
Necmettin Tarakcioglu ◽  
Ömer Sinan Şahin
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Internal Pressure ◽  
Crack Growth ◽  
Surface Crack ◽  
Filament Wound
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