scholarly journals Modified compact tension specimen for experiments on cement based materials: comparison of calibration curves from 2D and 3D numerical solutions

2016 ◽  
Vol 11 (39) ◽  
pp. 118-128 ◽  
Author(s):  
S. Seitl ◽  
V. Viszlay
Keyword(s):  
Numerical Solutions ◽  
Compact Tension ◽  
Compact Tension Specimen ◽  
Tension Specimen ◽  
Calibration Curves ◽  
Cement Based Materials ◽  
2D And 3D

scholarly journals Quantification of Influence of Epoxy Layer Between Interface Steel-Concrete on Calibration Curves for Modified Compact Tension Test

2017 ◽  
Vol 17 (2) ◽  
pp. 99-108
Author(s):  
Stanislav Seitl ◽  
Petr Miarka ◽  
Jakub Sobek
Keyword(s):  
Numerical Calculation ◽  
Calibration Curve ◽  
Compact Tension ◽  
Compact Tension Specimen ◽  
Tension Test ◽  
Tension Specimen ◽  
Evaluation Data ◽  
Fracture Properties ◽  
Calibration Curves ◽  
Compact Tension Test

Abstract The objective of this study is to investigate the use of compact tension specimen calibration curves for evaluation data of fracture properties measurement performed on modified compact tension specimen made from cement based composites. From literature, the well-known calibration curve for compact tension specimen is compared with calibration curves for Modified compact tension specimen that are obtained from numerical calculation. The obtained results are quantified and accuracy of solution is discussed. The suggested curves could be preferably used for determining of the fracture parameters.

Influence of Sulfur Content on the Fracture Toughness Properties of 2 1/4 Percent Cr-1 Percent Mo Steel

1976 ◽  
Vol 98 (2) ◽  
pp. 135-142 ◽  
Author(s):  
J. F. Copeland
Keyword(s):  
Fracture Toughness ◽  
Sulfur Content ◽  
Detrimental Effect ◽  
Crack Opening ◽  
Analytical Techniques ◽  
Compact Tension ◽  
Compact Tension Specimen ◽  
Tension Specimen ◽  
Microvoid Coalescence ◽  
Opening Displacement

The effects of sulfur content on the fracture toughness properties of 2 1/4Cr-1 Mo steel were evaluated at test temperatures above, at, and below the nil ductility transition temperature (NDTT) of −23°C (−10°F). Small, 12.7-mm (0.5-in.) thick compact tension specimen results were combined with J-integral, Equivalent Energy, and Crack Opening Displacement analytical techniques to provide KIc results up to 22°C (72°F). It was found that the sulfur content of this steel has a large detrimental effect on KIc at the NDTT and above, where microvoid coalescence is the fracture mode. Sulfur has no significant effect at −73°C (−100°F) where cleavage occurs. These results also indicate that the higher Charpy V-notch energy at NDTT, shown by lower sulfur steels, is translatable into increased fracture resistance.

scholarly journals A study on the matching of constraint between steam turbine blade and laboratory specimens

2020 ◽  
Vol 12 (5) ◽  
pp. 168781402092200
Author(s):  
Jie Yang ◽  
Yuman Liu ◽  
Haofeng Chen
Keyword(s):  
Steam Turbine ◽  
Turbine Blade ◽  
Tensile Specimen ◽  
Compact Tension ◽  
Compact Tension Specimen ◽  
Bend Specimen ◽  
Single Edge ◽  
Tension Specimen ◽  
Steam Turbine Blade ◽  
C 50

The matching of constraint between laboratory specimens and actual cracked structures is a key problem of the accurate structure integrity assessment. Different laboratory specimens and the steam turbine blade with different constraints were selected, the matching of constraint between steam turbine blade and laboratory specimens was investigated. The results shown that the steam turbine blade with 2 c = 50 mm, a/2 c = 0.20 has a matching constraint with single edge-notched bend specimen with a/ W = 0.6 and single edge-notched tensile specimen with a/ W = 0.3. The steam turbine blade with 2 c = 50 mm, a/2 c = 0.25 has a matching constraint with single edge-notched bend specimen with a/ W = 0.7. The steam turbine blade with 2 c = 50 mm, a/2 c = 0.30 has a matching constraint with single edge-notched bend specimen with a/ W = 0.5 and single edge-notched tensile specimen with a/ W = 0.1. The steam turbine blade with 2 c = 50 mm, a/2 c = 0.35 has a matching constraint with single edge-notched bend specimen with a/ W = 0.4, compact tension specimen with a/ W = 0.3 and central-cracked tension specimen with a/ W = 0.7. The steam turbine blade with a = 15 mm, a/2 c = 0.30 has a matching constraint with compact tension specimen with a/ W = 0.7 and single edge-notched tensile specimen with a/ W = 0.5. The steam turbine blade with a = 15 mm, a/2 c = 0.40 has a matching constraint with compact tension specimen with a/ W = 0.4. The steam turbine blade with a = 15 mm, a/2 c = 0.50 has a matching constraint with single edge-notched bend specimen with a/ W = 0.5.

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