Results 61 to 70 of about 2,495 (182)

A numerical analysis of the relation between CTOD and fatigue crack growth [PDF]

, 2016
El cálculo de la vida a fatiga durante la etapa de propagación de la grieta se suele realizar relacionando da/dN con ΔK. Sin embargo, la influencia que en estos análisis tiene el parámetro ΔK debe recaer en algún otro parámetro no lineal cercano al ...
Antunes, F.V., Camas, Daniel, Rodrigues, S.M.   +2 more
core  

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

, 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, E. Bouchbinder, Eran Bouchbinder, Jay Fineberg, K. Ravi-Chandar, L. B. Freund   +5 more
core   +1 more source

Slip‐resistant connections subjected to freeze‐thaw cycles

Steel 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, Miguel Ángel Serrano‐López, Carlos López‐Colina, Fernando López‐Gayarre   +3 more
wiley   +1 more source

Computing the stress intensity factor range for fatigue crack growth testing at 20 kHz

Engineering Reports, Volume 6, Issue 6, June 2024.
A comparative study on the computation of the SIF at 20 kHz load frequency. Results from different simulation procedures are presented and discussed. Abstract Inertia and damping influence the values of the stress intensity factors (SIFs) at high‐frequency loading and they must be included in computations.
Mohamed Sadek, Jens Bergström, Nils Hallbäck   +2 more
wiley   +1 more source

Determination of dynamic fracture toughness using a new experimental technique

EPJ Web of Conferences, 2015
In other studies dynamic fracture toughness has been measured using Charpy impact and modified Hopkinson Bar techniques. In this paper results will be shown for the measurement of fracture toughness using a new test geometry.
Cady Carl M., Liu Cheng, Lovato and Manuel L.   +2 more
doaj   +1 more source

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

Geomechanics 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

FPZ evolution of mixed mode fracture in concrete: Experimental and numerical [PDF]

, 2017
Digital image correlation (DIC) technique is applied to study the evolution of fracture process zone (FPZ) of mixed mode fracture in concrete. By testing a series of beams of various sizes under four-point shearing, the opening and sliding displacements ...
Dong, L, Dong, W, Kastiukas, G, Wu, Z, Zhou, X   +4 more
core   +1 more source

The fatigue crack growth behavior of hydrogenated 9Cr‐1Mo steel: An experimental and numerical study

Fatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 5, Page 1677-1695, May 2024.
Abstract This research investigates the fatigue crack evolution in P91 steel through experiments and extended finite element method (XFEM) simulation for as‐received and hydrogenated conditions. Hydrogen pre‐charging is performed using a constant current electrochemical method in 1 M sulfuric acid solution.
Mahesh Bharati, Rathin Maity, Akhilendra Singh, Surajit Kumar Paul   +3 more
wiley   +1 more source

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

International 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, Won-Hyo You, Chang-Hyuk Yoo, Kyung-Su Kim, Yooil Kim   +4 more
doaj   +1 more source

Calibrating an adaptive cohesive zone model to simulate ductile crack propagation in structural steel under cyclic loading

Fatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 2, Page 319-343, February 2024.
Abstract A procedure is outlined for calibrating a finite element model to simulate ductile cracking that employs a continuum damage criterion for ductile fracture initiation, termed the Stress Weighted Ductile Fracture Model, with an Adaptive Cohesive Zone method to simulate crack propagation.
Andy Ziccarelli, Amit Kanvinde, Gregory Deierlein   +2 more
wiley   +1 more source