Elastic compliances and stress-intensity factors for side-grooved compact specimens

Shih, C. F.; Lorenzi, H. G. de; Andrews, WR

doi:10.1007/bf00034260

Cited by 71 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where B N indicates the net thickness. Although using this thickness is recommended by ASTM E1820, an alternative could be the equivalent thickness, B E proposed by Shih et al [3] which is calculated as:…”

Section: Resultsmentioning

confidence: 99%

Effect of Side Grooves on Plane Stress Fracture Behavior of Compact Tension Specimens Made of Ultra-High Strength Steel

Dabiri

Skriko

Amraei

et al. 2016

KEM

View full text Add to dashboard Cite

Thin compact tension specimens made of direct quenched ultra-high strength steel were tested under constant rate uniaxial tensile load. The length of the crack was monitored using optical microscopes on both sides of the specimens during the fatigue pre-cracking (using a chevron V-notch). Deformations during the crack lengthening were recorded by a full-field measurement technique using a set of digital cameras to check the effect of side grooves on reduction of surface deformation. The Specimen without side grooves showed a high level of plasticity, thickness reduction, and crack growth along a deviating path. In addition, the fracture surface showed excessive failure along the inclined plane. The presence of side grooves, however, led to the decrease of the maximum applied force at final fracture while the force prior to crack tearing was almost the same as the specimen without side grooves. Grooves significantly reduced the inclination of the fracture plane and plastic deformation due to removal of low stress triaxiality on the surface. They led to the fracture along a straight path and approximately even surface which makes them beneficial especially when compliance method is used in plane stress fracture tests.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Side Grooves on Plane Stress Fracture Behavior of Compact Tension Specimens Made of Ultra-High Strength Steel

Dabiri

Skriko

Amraei

et al. 2016

KEM

View full text Add to dashboard Cite

show abstract

“…In the process of crack growth in these experiments, the crack usually extends forward in a gradual manner and the trailing edge often fails in shear [32]. Therefore, the crack extension can maintain the straight state of specimen with side grooves because the introduction of side grooves can be regarded as plane strain conditions approximately [32,33]. Some scholars have investigated the effect of side grooves in single-edge bending and compact tension specimens on elastic compliance [32,34], stress intensity factor [32], J-integral and cracktip constraint by numerical simulation and experimental investigation.…”

Section: Introductionmentioning

confidence: 90%

“…Generally, the experimental determination of material critical crack-tip opening displacement or critical J-integral is based on the standardized procedures recommended by ASTM E1820 [30] or ISO 12,135 [31], which use the small-scale standardized specimens with deep cracks to guarantee high crack-tip constraint under J-dominance scale plasticity, including three-point bending, compact tension and disk-shaped tension specimens. In the process of crack growth in these experiments, the crack usually extends forward in a gradual manner and the trailing edge often fails in shear [32]. Therefore, the crack extension can maintain the straight state of specimen with side grooves because the introduction of side grooves can be regarded as plane strain conditions approximately [32,33].…”

Section: Introductionmentioning

confidence: 93%

“…For the selection of passivation line form, considering that there is no obvious yield platform in the stress-strain curve of X90 pipeline steel, and in order to obtain relatively conservative results, the expression of passivation line is [32,33] 3.75 m J R a = Δ (7) where Rm is the tensile strength of material perpendicular to crack plane at test temperature.…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

“…Therefore, the crack extension can maintain the straight state of specimen with side grooves because the introduction of side grooves can be regarded as plane strain conditions approximately [32,33]. Some scholars have investigated the effect of side grooves in single-edge bending and compact tension specimens on elastic compliance [32,34], stress intensity factor [32], J-integral and cracktip constraint by numerical simulation and experimental investigation. The difference between the compliance of a specimen without side grooves and that of a specimen with side grooves (for B-B N < 0.25B) is less than 6% based on the numerical simulation method.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Wang

Hao²,

Xie³

et al. 2022

Metals

View full text Add to dashboard Cite

The X90 pipeline steel with high-strength and high-toughness become the most popular pipeline steel. Due to the stress triaxial constraint and fracture toughness properties are the key factors for the stable work of pipeline steel, the research on the fracture toughness of X90 is a great significance to promote the engineering application of high-strength pipeline steel. In order to investigate the stress triaxial constraint and fracture toughness properties of X90 pipeline steel, the experimental rules with different grooves size are proposed using the common toughness experiment and the corresponding numerical models are established in this paper. The resistance curves and fracture toughness of each type of specimens are obtained and compared with that of finite element analysis. Furthermore, the stress distribution, J-integral distribution and stress triaxial constraint of the specimen are analyzed, as well as the influence of side grooves size on the determination of fracture toughness is also discussed. The results obtained from the study will provide a reference to the fracture toughness evaluation research and application of X90 pipeline steel.

show abstract

The Jacobian derivative method for three‐dimensional fracture mechanics

Barbero

Reddy

1990

Commun. appl. numer. methods

View full text Add to dashboard Cite

SUMMARYThis paper presents a new algorithm to compute the distribution of the strain energy release rate along the crack front for three-dimensional cracks (e.g surface cracks). The algorithm is economical and accurate. The algorithm is illustrated via two-dimensional and three-dimensional examples including a surface crack in a cylinder under internal pressure and side-grooved compact-test specimens. It is shown, via specific examples, that only a single, self-similar virtual crack extension is necessary to accurately compute the strain-energy release-rate distribution along the crackfront.

show abstract

Elastic compliances and stress-intensity factors for side-grooved compact specimens

Cited by 71 publications

References 3 publications

Effect of Side Grooves on Plane Stress Fracture Behavior of Compact Tension Specimens Made of Ultra-High Strength Steel

Effect of Side Grooves on Plane Stress Fracture Behavior of Compact Tension Specimens Made of Ultra-High Strength Steel

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

The Jacobian derivative method for three‐dimensional fracture mechanics

Contact Info

Product

Resources

About