Results 181 to 190 of about 6,671 (206)

Introducing a novel LLD-CMOD equivalence fracture model for quasi-brittle materials exposed to three-point bending

Engineering Fracture Mechanics
Muhammed Gumus
exaly   +2 more sources

On Experimental J Estimation Equations Based on CMOD for SE(B) Specimens

Journal of Testing and Evaluation, 2001
Abstract This note addresses the accuracy of the J-estimation equation for shallow-cracked single edge cracked bars, SE(B), as originally proposed by Kirk and Dodds (1993), based on 2D finite element analysis. Our study placed particular emphasis on the sensitivity of the Kirk-Dodds equation to the nature of the material, including ...
YJ Kim, KH Schwalbe
openaire   +1 more source

Theoretical and Experimental Load‐ CMOD Curves Through Softening to Failure

Journal of Engineering Mechanics, 1990
A model for process‐zone growth and crack propagation is discussed and the model predictions are compared to experimental results. Critical crack tip opening displacement (CTODc) is used as a traction‐free crack extension criterion. It is assumed, as a first approximation, that CTODc has two critical values, initial and secondary.
openaire   +1 more source

Experimental Estimation of J Resistance Curves From Load-CMOD Record for FFCT Specimens

Journal of Testing and Evaluation, 2016
Abstract Fracture toughness of ductile materials is often characterized by J resistance curves. It is generally required to adopt load line crack mouth opening displacement (CMOD) records in load line compact tension (LLCT) specimens to calculate the J integral according to ASTM E1820-13e1.
Kaikai Shi, Lixun Cai, Yunming Hu, David Salmon, Chen Bao   +4 more
openaire   +1 more source

J-R Curve Testing of SE(T) Fracture Specimens Using Unloading Compliance and CMOD Data

Volume 6: Materials and Fabrication, Parts A and B, 2008
Laboratory testing of fracture specimens to measure resistance curves (J - Δa) have focused primarily on the unloading compliance method using a single specimen. Current estimation procedures (which form the basis of ASTM E1820 standard) employ load line displacement (LLD) records to measure fracture toughness resistance data incorporating a crack ...
Sebastian Cravero, Claudio Ruggieri
openaire   +1 more source

Chronological Models (cMod) : towards consistent lifecycle information management

The cMod framework introduces a novel approach to managing chronological construction models, integrating lifecycle phases, update tracking, and spatial context for enhanced Building Information Modeling (BIM) to improve model consistency. Leveraging ontologies—the Ontology for Chronological Construction Processes (OCCP) and the Ontology for Updates ...
Vaatz, Albrecht, Menzel, Karsten
openaire   +1 more source

A comparison of boundary and global collocation solutions forK I and CMOD calibration functions

Experimental Mechanics, 1991
Global and boundarycollocation solutions forK I , CMOD, and the full-field stress patterns of a single-edge notched tension specimen were compared to determine the accuracy of each technique and the utility of each for determining solutions for the short and the deep crack case.
R. J. Sanford, M. T. Kirk
openaire   +1 more source

Experimental Determination of Fatigue Crack Closure in 316 (N) Weld Using a Global CMOD Method

Journal of Testing and Evaluation, 2006
Abstract The crack closure phenomenon is important in order to assess the fatigue crack growth. Hence, the accurate measurement of the opening load of the crack is essential for the determination of the effective stress intensity factor range (ΔKeff).
P Johan Singh, SL Mannan
openaire   +1 more source

A Study on CMOD-Based Compliance Calibration Functions for Clamped Single-Edge Tension Specimens

Journal of Testing and Evaluation, 2015
Abstract The compliance calibration function for the clamped single-edge tension (SE(T)) specimen has not been reported in the literature. Based upon the inverse fitting of the three existing CMOD-based compliance equations, three CMOD-based compliance calibration equations are proposed for specimens with a crack length-to-width ratio 0 ...
openaire   +1 more source

Further developments in J evaluation procedure for growing cracks based on LLD and CMOD data

International Journal of Fracture, 2007
Laboratory testing of fracture specimens to measure resistance curves (J − Δa) have focused primarily on the unloading compliance method using a single specimen. Current estimation procedures (which form the basis of ASTM E1820 standard) employ load line displacement (LLD) records to measure fracture toughness resistance data incorporating a crack ...
Sebastian Cravero, Claudio Ruggieri
openaire   +1 more source