Crack detection with strain gages and the body force method

2006 ◽  
Vol 24 (6) ◽  
pp. 765-769 ◽  
Author(s):  
Hiroshi Noguchi ◽  
Toyomitsu Harada
Keyword(s):  
Crack Detection ◽  
Body Force ◽  
The Body ◽  
Strain Gages ◽  
Force Method ◽  
Body Force Method

K-0506 Crack Detection with Strain Gage's Output and the Body Force Method

2001 ◽  
Vol I.01.1 (0) ◽  
pp. 137-138
Author(s):  
Takashi YOSHIMURA ◽  
Toyomitsu HARADA ◽  
Hiroshi NOGUCHI ◽  
Tatsuhiko YOSHIMURA
Keyword(s):  
Crack Detection ◽  
Body Force ◽  
The Body ◽  
Force Method ◽  
Body Force Method

Assessment Procedure for Multiple Volumetric Flaws in p-M Diagram

2009 ◽  
Vol 131 (3) ◽  
Author(s):  
Shinji Konosu
Keyword(s):  
Body Force ◽  
Pressure Vessels ◽  
The Body ◽  
Assessment Procedure ◽  
Force Method ◽  
Reference Stress ◽  
Body Force Method ◽  
Common Problems ◽  
Shielding Effects

Assessment of multiple volumetric flaws is one of the most common problems relating to pressure vessels and piping components. Under the current fitness for service rules, such as ASME, BS, and so on, multiple volumetric flaws are usually recharacterized as an enveloping volumetric flaw (defined as a single larger volumetric flaw) as well as multiple cracklike flaws, following their assessment rules. However, the rules proposed in their codes will not often agree and their justification is unknown. Furthermore, they can provide unrealistic assessment in some cases. In this paper, the interaction between two differently sized nonaligned volumetric flaws such as local thin areas is clarified by applying the body force method. Unlike multiple cracklike flaws, the effect of biaxial stresses on the interaction is evident. Based on the interaction that indicates the magnification and shielding effects and reference stress solutions, a new procedure for multiple volumetric flaws is proposed for assessing the flaws in the p-M (pressure-moment) diagram, which is a simple assessment procedure for vessels with volumetric flaws.

Simplification of the body force method by using the approximated boundaries composed of triangular surfaces.

1988 ◽  
Vol 54 (508) ◽  
pp. 2093-2098
Author(s):  
Hironobu NISITANI ◽  
Hiroshi NOGUCHI ◽  
Dai-heng CHEN ◽  
Hiroaki MINE
Keyword(s):  
Body Force ◽  
The Body ◽  
Force Method ◽  
Body Force Method
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