Stable Growth and Instability of Circumferential Cracks in Type 304 Stainless Steel Pipes Under Tensile Load

1984 ◽  
Vol 106 (4) ◽  
pp. 405-411 ◽  
Author(s):  
G. Yagawa ◽  
Y. Takahashi ◽  
K. Kashima ◽  
K. Hasegawa ◽  
M. Saito ◽  
...  
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Tensile Load ◽  
304 Stainless Steel ◽  
Opening Angle ◽  
Test Machine ◽  
Total Displacement ◽  
Stable Growth ◽  
Type 304 ◽  
Type 304 Stainless Steel

Flaws due to stress corrosion cracking have frequently been found in Type 304 stainless steel piping of some boiling water reactor (BWR) plants. In this work, in order to quantitatively examine the integrity under the presence of such cracks, pipe fracture tests and related finite element analyses were conducted. The unstable fractures were observed under the quasi-static and the dynamic tensile loading conditions with a high-compliance test machine. The finite element methods were used to demonstrate the effectiveness of the J-integral and the crack tip opening angle (CTOA) as criteria for stable crack extension, and that of the total displacement stationariness condition as a criterion for the onset of instability.

A Plastic Fracture Mechanics Prediction of Fracture Instability in a Circumferentially Cracked Pipe in Bending—Part II: Experimental Verification on a Type 304 Stainless Steel Pipe

1981 ◽  
Vol 103 (4) ◽  
pp. 359-365 ◽  
Author(s):  
G. M. Wilkowski ◽  
A. Zahoor ◽  
M. F. Kanninen
Keyword(s):  
Stainless Steel ◽  
Crack Growth ◽  
Maximum Load ◽  
Stable Crack Growth ◽  
304 Stainless Steel ◽  
Fracture Instability ◽  
Stable Growth ◽  
Girth Welds ◽  
Type 304 ◽  
Type 304 Stainless Steel

The possibility of a pipe fracture emanating from a stress corrosion crack in the heat-affected zones of girth-welds in Type 304 stainless steel pipes was investigated. The J-resistance curve—tearing modulus parameter for the prediction of crack initiation, stable growth and fracture instability—was employed. To evaluate the analysis, a pipe fracture experiment was performed using a spring-loaded four-point bending system that simulated an 8.8-m (29-ft) long section of unsupported 102-mm- (4-in-) dia pipe. An initial through-wall crack of length equal to 104 mm (4.1 in.) was used. Fracture instability was predicted to occur between 15.2 and 22.1 mm (0.60 and 0.87 in.) of stable crack growth at each tip. In the actual experiment, the onset of fracture instability occurred beyond maximum load at an average stable crack growth of 11.7 to 19 mm (0.463 to 0.750 in.) at each tip.

scholarly journals Finite Element Modelling of Cold Formed Stainless Steel Columns

10.14311/722 ◽  
2005 ◽  
Vol 45 (3) ◽  
Author(s):  
M. Macdonald ◽  
J. Rhodes
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Load Capacity ◽  
304 Stainless Steel ◽  
Channel Cross Section ◽  
Stress Strain ◽  
Steel Columns ◽  
Strain Behaviour ◽  
Type 304 ◽  
Type 304 Stainless Steel

This paper describes the results obtained from a finite element investigation into the load capacity of column members of lipped channel cross-section, cold formed from Type 304 stainless steel, subjected to concentric and eccentric compression loading. The main aims of this investigation were to determine the effects which the non-linearity of the stress-strain behaviour of the material would have on the column behaviour under concentric or eccentric loading. Stress-strain curves derived from tests and design codes are incorporated into non-linear finite element analyses of eccentrically loaded columns and the results obtained are compared with those obtained on the basis of experiments on stainless steel channel columns with the same properties and dimensions. Comparisons of the finite element results and the test results are also made with existing design specifications and conclusions are drawn on the basis of the comparisons. 

Ductile Fracture of Circumferentially Cracked Type-304 Stainless Steel Pipes in Tension

1984 ◽  
Vol 106 (4) ◽  
pp. 399-404 ◽  
Author(s):  
A. Zahoor ◽  
D. M. Norris
Keyword(s):  
Stainless Steel ◽  
Crack Depth ◽  
Tensile Load ◽  
304 Stainless Steel ◽  
Steel Pipes ◽  
Safety Margins ◽  
Favorable Conditions ◽  
Type 304 ◽  
Type 304 Stainless Steel ◽  
Leak Before Break

Circumferentially cracked pipes subjected to tensile load were analyzed for finite length and constant depth part-through cracks located at the inside of the pipe wall. The analysis postulated loads sufficient to cause net-section yielding of the flawed section. It was demonstrated that a propensity for predominantly radial growth exists for part-through cracks loaded in tension. This result is similar to the result for bend loading, except that bend loading causes more favorable conditions for wall breakthrough than tension loading. Numerical results were developed for 4-in. and 24-in-dia pipes. Safety margins for displacement controlled loads were described by a safety assessment diagram. This diagram defines a curve delineating leak from fracture in a space of nondimensional crack length and crack depth. 4-in-dia schedule 80 Type-304 stainless steel pipes with length to radius ratio (L/R) of up to 100 exhibited leak-before-break behavior.

OUTOKUMPU TYPE 630

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
304 Stainless Steel ◽  
Type 304 ◽  
Type 304 Stainless Steel

Abstract Outokumpu Type 630 is a martensitic age hardenable alloy of composition 17Cr-4Ni. The alloy has high strength and corrosion resistance similar to that of Type 304 stainless steel. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1238. Producer or source: Outokumpu High Performance Stainless.

Passivity of Type 304 Stainless Steel–Effect of Plastic Deformation

CORROSION ◽  
1972 ◽  
Vol 28 (7) ◽  
pp. 269-273 ◽  
Author(s):  
K. Elayaperumal ◽  
P. K. De ◽  
J. Balachandra
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
304 Stainless Steel ◽  
Type 304 ◽  
Type 304 Stainless Steel
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