scholarly journals Comparison of girth weld tearing resistance obtained from Curved Wide Plate and Single Edge Notch Tensile testing

2015 ◽  
Vol 148 ◽  
pp. 406-420 ◽  
Author(s):  
M.A. Verstraete ◽  
W. De Waele ◽  
K. Van Minnebruggen ◽  
S. Hertelé
Keyword(s):  
Tensile Testing ◽  
Single Edge ◽  
Single Edge Notch ◽  
Edge Notch ◽  
Tearing Resistance

Fracture Control — Offshore Pipelines: Experimental Studies on the Effect of Crack Depth and Asymmetric Geometries on the Ductile Tearing Resistance

2005 ◽  
Author(s):  
Ba˚rd Nyhus ◽  
Erling O̸stby ◽  
Hans Olav Knagenhjelm ◽  
Scott Black ◽  
Per Arne Ro̸stadsand
Keyword(s):  
Fracture Toughness ◽  
Crack Depth ◽  
Experimental Studies ◽  
Single Edge ◽  
Offshore Pipelines ◽  
Ductile Tearing ◽  
Single Edge Notch ◽  
Edge Notch ◽  
Fracture Control ◽  
Tearing Resistance

Engineering critical assessment of offshore pipelines is usually very conservative if standardized single edge notch bend (SENB) specimens are used for the fracture mechanics testing. It is commonly accepted that the fracture toughness is dependent on the geometry constraint at the crack tip. The standardized SENB specimens have a high geometry constraint, and give lower bound fracture toughness for all geometries. For circumferential flaws in pipes the single edge notch tension (SENT) specimens is taken more into use, to establish more correct fracture toughness for the pipe in question. In this paper the effect of crack depth, misalignment and different wall thicknesses in SENT specimens have been studied. In addition the effect of crack depth and internal pressure in pipes have been studied with FE simulations.

scholarly journals Modelling the Variability and the Anisotropic Behaviour of Crack Growth in SLM Ti-6Al-4V

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1400
Author(s):  
Rhys Jones ◽  
Calvin Rans ◽  
Athanasios P. Iliopoulos ◽  
John G. Michopoulos ◽  
Nam Phan ◽  
...  
Keyword(s):  
Crack Growth ◽  
The United States ◽  
Fatigue Threshold ◽  
Growth Equation ◽  
Single Edge ◽  
Test Program ◽  
Large Variability ◽  
Single Edge Notch ◽  
Anisotropic Behaviour ◽  
Edge Notch

The United States Air Force (USAF) Guidelines for the Durability and Damage Tolerance (DADT) certification of Additive Manufactured (AM) parts states that the most difficult challenge for the certification of an AM part is to establish an accurate prediction of its DADT. How to address this challenge is the focus of the present paper. To this end this paper examines the variability in crack growth in tests on additively manufactured (AM) Ti-6Al-4V specimens built using selective layer melting (SLM). One series of tests analysed involves thirty single edge notch tension specimens with five build orientations and two different post heat treatments. The other test program analysed involved ASTM standard single edge notch specimens with three different build directions. The results of this study highlight the ability of the Hartman–Schijve crack growth equation to capture the variability and the anisotropic behaviour of crack growth in SLM Ti-6Al-4V. It is thus shown that, despite the large variability in crack growth, the intrinsic crack growth equation remains unchanged and that the variability and the anisotropic nature of crack growth in this test program is captured by allowing for changes in both the fatigue threshold and the cyclic fracture toughness.

Stress concentration of a strip with a single edge notch

1987 ◽  
Vol 28 (2) ◽  
pp. 223-238 ◽  
Author(s):  
Noda Nao-Aki ◽  
Nisitani Hironobu
Keyword(s):  
Stress Concentration ◽  
Single Edge ◽  
Single Edge Notch ◽  
Edge Notch

Significance of the load shift in single-edge notch tension tests

1986 ◽  
Vol 26 (2) ◽  
pp. 142-149
Author(s):  
H. A. Ezzat ◽  
G. Sich
Keyword(s):  
Single Edge ◽  
Single Edge Notch ◽  
Tension Tests ◽  
Edge Notch

Wide Range Compliance Solutions for Various Fracture Test Specimens Using Crack Mouth Opening Displacement

2017 ◽  
Author(s):  
Claudio Ruggieri ◽  
Rodolfo F. de Souza
Keyword(s):  
Mouth Opening ◽  
Crack Mouth Opening Displacement ◽  
Width Ratio ◽  
Fracture Test ◽  
Single Edge ◽  
Opening Displacement ◽  
Element Analysis ◽  
Single Edge Notch ◽  
Wide Range ◽  
Edge Notch

This work addresses the development of wide range compliance solutions for tensile-loaded and bend specimens based on CMOD. The study covers selected standard and non-standard fracture test specimens, including the compact tension C(T) configuration, the single edge notch tension SE(T) specimen with fixed-grip loading (clamped ends) and the single edge notch bend SE(B) geometry with varying specimen spam over width ratio and loaded under 3-point and 4-point flexural configuration. Very detailed elastic finite element analysis in 2-D setting are conducted on fracture models with varying crack sizes to generate the evolution of load with displacement for those configurations from which the dependence of specimen compliance on crack length, specimen geometry and loading mode is determined. The extensive numerical analyses conducted here provide a larger set of solutions upon which more accurate experimental evaluations of crack size changes in fracture toughness and fatigue crack growth testing can be made.

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