Mode-I dynamic fracture initiation toughness using torsion load

Fahem, Ali Fahad; Kidane, Addis; Sutton, Michael A.

doi:10.1016/j.engfracmech.2019.03.039

Cited by 13 publications

(3 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…• The shale can be tested under torsional stress wave using the spiral crack and investigate the mixed mode fracture under low and high loading rates, [21][22] 4. Summary Unfortunately, in all these methods the weak plane behavior and effect on the fracture have not been considered.…”

Section: The Fracture Datamentioning

confidence: 99%

The experimental methods and elastic properties of shale bedding planes materials state-of-the-art review

Messer

Fahem

Guthai

et al. 2022

QJES

View full text Add to dashboard Cite

The identification of physical properties and fracture behavior of shale or hydrocarbon materials has grown to have substantial importance in the last four decades to industry and investigators alike due to its importance in unconventional oil and gas resources. This interest deviates from shale being a transversely isotropic material formed by bedding layers with different orientations and isotropic properties. In this paper, the experimental setup and the mechanical properties of shale materials have been reviewed. The investigator shows that the properties of shale are not unique, and it is highly dependent on, volume, loading type, and geolocation. Furthermore, the investigator utilized different experimental setup methods to identify the elastic properties of shale and the most common methods are Transducers Strain Detection, Strain gauges, Ultrasonic, and Digital image correlation that is shown in detail.

show abstract

Section: The Fracture Datamentioning

confidence: 99%

The experimental methods and elastic properties of shale bedding planes materials state-of-the-art review

Messer

Fahem

Guthai

et al. 2022

QJES

View full text Add to dashboard Cite

show abstract

“…The fracture load is used as input to the numerical model for calculation of the J-integral and the stress intensity factors for Mode-I, Mode-III and Mixed-Mode (I/III) loading conditions. The theoretical solution of the spirally notched specimen using a 3D interacting integral method is available in previous work [21,22]. As shown in Fig.…”

Section: Numerical Computation Of Sifs and J-integralmentioning

confidence: 99%

Determination of Mixed-Mode (I/III) Fracture of Polycarbonate

Fahem

Gupta

Kidane

et al. 2021

Fracture, Fatigue, Failure and Damage Evolution , Volume 3

Self Cite

View full text Add to dashboard Cite

In many engineering applications, Mode-III type loading in the crack tip region is more common. Since loading in structures oftentimes is quite complex, the crack tip region generally experiences Mixed-Mode conditions. In this work, torsional loading experiments are performed by employing a modified spirally cracked cylindrical specimen. The cylindrical specimen used in all experiments is machined to incorporate a full revolution, spiral v-notch crack. The v-notch crack is inclined at an angle of 67.5 • with respect to the specimen centerline to obtain Mixed-Mode (I/III) crack tip conditions under torsional loading. By combining the experimental measurements with detailed numerical simulations, the Mixed-Mode (I/III) fracture parameters for polycarbonate (PC) are quantified using an interaction integral method. The elastic-viscoplastic material response of the PC material, required for numerical simulations, is determined by performing standard tensile loading experiments. The Mixed-Mode (I/III) fracture toughness, as well as the stress intensity factors for Mode-I and Mode-III crack tip conditions are presented and discussed.

show abstract

“…Although the dynamic structural behavior relies on the inertia effects, several researchers report that in most cases, the inertia effects only contribute a little to the dynamic J-integrals. 42,43 Kishimoto et al 44 derive the dynamic J-integral expression considering the inertia effects and verify its path-independence through finite element (FE) results. Baer et al 45 evaluate the dynamic J-R curve from multiple specimens using the key-curve method.…”

Section: Introductionmentioning

confidence: 99%

Measuring J‐R curve under dynamic loading conditions using digital image correlation

Chen

Qian

2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

This article describes a convenient method to quantify the dynamic J‐R curve through digital image correlation (DIC). The DIC approach, verified through numerical and experimental results for single edge notched bend (SE(B)) specimens, quantifies the dynamic J‐R curve during the drop‐weight tearing test (DWTT). The proposed method enables consistent measurement of the J‐integral and the amount of crack extension solely from the DIC measured displacement on the specimen surface, which facilitates direct comparison of fracture toughness under different strain rates. The results demonstrate enhanced Mode‐I fracture resistance of metallic materials under increased strain rates.

show abstract

Mode-I dynamic fracture initiation toughness using torsion load

Cited by 13 publications

References 35 publications

The experimental methods and elastic properties of shale bedding planes materials state-of-the-art review

The experimental methods and elastic properties of shale bedding planes materials state-of-the-art review

Determination of Mixed-Mode (I/III) Fracture of Polycarbonate

Measuring J‐R curve under dynamic loading conditions using digital image correlation

Contact Info

Product

Resources

About