Results 61 to 70 of about 2,541 (197)

A modified model for calculating crack tip opening displacement (CTOD) considering fracture process zone (FPZ) in rock

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
AbstractA new CTOD calculation method is investigated in this study, considering the FPZ and the effective Young’s modulus. The calculated CTOD values from four theoretical models are compared with the measured CTOD values from the three-point beam experiments, and the differences between them are analyzed.
Yang Qiao, Zong-Xian Zhang, Jun Zhou
openaire   +2 more sources

Preliminary Evaluation of the Influence of Hydrogen on the Fracture Toughness of an X65 Gas‐Transmission Pipeline Steel

open access: yesAdvanced Engineering Materials, Volume 26, Issue 16, August 2024.
We measured two values of fracture toughness for X65 steel in air (KQ of 369 and 487 MPa√m$\sqrt{} \text{m}$) and two essentially American Society for Testing of Materials–valid values of fracture toughness of KJ1C of 150 and 189 MPa√m$\sqrt{} \text{m}$ for X65 subjected to in situ hydrogen charging thought to be equivalent to a hydrogen gas pressure ...
Md Fahdul Wahab Chowdhury   +11 more
wiley   +1 more source

An experimental study on fatigue performance of cryogenic metallic materials for IMO type B tank

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2013
Three materials SUS304, 9% Ni steel and Al 5083-O alloy, which are considered possible candidate for International Maritime Organization (IMO) type B Cargo Containment System, were studied.
Jin-Sung Lee   +4 more
doaj   +1 more source

Incremental displacement collocation method for the evaluation of tension softening curve of mortar [PDF]

open access: yes, 2012
The tension softening curve (TSC), showing the relationship between the cohesive tensile stress and crack opening displacement, is the constitutive law of the cohesive crack model.
Chen, HHN, Kwan, AKH, Su, RKL
core   +1 more source

Effect of CNT filler and temperature on fracture toughness of epoxy composites reinforced with carbon fabric

open access: yesEngineering Reports, Volume 6, Issue 8, August 2024.
In present research the fracture behavior of carbon fabric‐epoxy composites was evaluated with the addition of 0.1, 0.2, 0.5, and 0.75 weight percentages of carbon nano tubes at different temperatures. Abstract In present research the fracture behavior of carbon fabric‐epoxy composites (CE composites) was evaluated with the addition of 0.1, 0.2, 0.5 ...
M. D. Kiran   +9 more
wiley   +1 more source

The Breakdown of Linear Elastic Fracture Mechanics near the Tip of a Rapid Crack

open access: yes, 2008
We present high resolution measurements of the displacement and strain fields near the tip of a dynamic (Mode I) crack. The experiments are performed on polyacrylamide gels, brittle elastomers whose fracture dynamics mirror those of typical brittle ...
Ariel Livne   +5 more
core   +1 more source

Establishing the fiber bridging law by an inverse analysis approach [PDF]

open access: yes, 2016
A method for establishing the relationship between stress and crack face opening for steel fiber–reinforced concrete (SFRC) beams under three-point loading was proposed using inverse analysis.
Karadelis, John N., Lin, Y.
core   +1 more source

Slip‐resistant connections subjected to freeze‐thaw cycles

open access: yesSteel Construction, Volume 17, Issue 3, Page 155-163, August 2024.
Abstract There are many examples of steel structures subjected to severe environmental conditions with bolted connections directly exposed to climatic agents such as steel bridges, mining transfer towers, wind towers etc. In this experimental research, non‐slip joints with M16 and M20 bolts have been studied. The specimens were subjected to fourteen 12 
Alfonso Fuente‐García   +3 more
wiley   +1 more source

Implementation of Recent Advances in Fracture Toughness Testing to Investigate Tearing Resistance of Heat-Resistant Steel 14MoV6-3 [PDF]

open access: yesArchives of Metallurgy and Materials
Since WWII, progress has been made in understanding how materials fail and how to prevent such failures. In this work, the newly standardized Single Edge Notch Tension (SENT) specimen is used to assess the ductile tearing resistance of 14MoV-3 steel ...
B.K. Kipsang   +2 more
doaj   +1 more source

The 1/r singularity in weakly nonlinear fracture mechanics

open access: yes, 2009
Material failure by crack propagation essentially involves a concentration of large displacement-gradients near a crack's tip, even at scales where no irreversible deformation and energy dissipation occurs. This physical situation provides the motivation
Ariel Livne   +25 more
core   +1 more source

Home - About - Disclaimer - Privacy