Experimental Determination of the Mode I Behavior of a Delamination Under Mixed-Mode Loading

2009 ◽  
pp. 187-187-23 ◽  
Author(s):  
A Poursartip ◽  
N Chinatambi
Keyword(s):  
Experimental Determination ◽  
Mixed Mode ◽  
Mode I ◽  
Mixed Mode Loading

Acoustoelastic Determination of Forces on a Crack in Mixed-Mode Loading

1983 ◽  
Vol 50 (2) ◽  
pp. 379-382 ◽  
Author(s):  
R. B. King ◽  
G. Herrmann
Keyword(s):  
Nondestructive Evaluation ◽  
Mixed Mode ◽  
Experimental Results ◽  
Mode I ◽  
J Integral ◽  
Mixed Mode Loading ◽  
Central Crack ◽  
Ultrasonic Measurements ◽  
Mode I Loading

A technique previously presented [1] for the nondestructive evaluation of the J integral in cracked samples from ultrasonic measurements of stress, and successfully tested on specimens under mode I loading, is extended here to mixed-mode loading. Experimental results are presented for both the J and L integrals in a specimen with a slanted central crack loaded in tension, which agree well with theoretical values.

Dynamic cleavage in ductile materials

1986 ◽  
Vol 1 (1) ◽  
pp. 73-80 ◽  
Author(s):  
I.-H. Lin ◽  
R. M. Thomson
Keyword(s):  
Brittle Fracture ◽  
Mixed Mode ◽  
High Speed ◽  
Time Dependent ◽  
Mode I ◽  
Theoretical Treatment ◽  
Mixed Mode Loading ◽  
Dislocation Emission ◽  
Ductile Materials ◽  
Ductile Behavior

Ductile materials are found to sustain brittle fracture when the crack moves at high speed. This fact poses a paradox under current theories of dislocation emission, because even at high velocities, these theories predict ductile behavior. A theoretical treatment of time-dependent emission and cleavage is given which predicts a critical velocity above which cleavage can occur without emission. Estimates suggest that this velocity is in the neighborhood of the sound velocity. The paper also discusses the cleavage condition under mixed mode loading, and concludes that the cleavage condition involves solely the mode I loading, with possible sonic emission under such loadings

scholarly journals Determination of mixed mode (I/II) SIFs of cracked orthotropic materials

2018 ◽  
Author(s):  
D. Chakraborty ◽  
Debaleena Chakraborty ◽  
K. S. R. K. Murthy
Keyword(s):  
Mixed Mode ◽  
Orthotropic Materials ◽  
Mode I

The Effect of Loading Mode on Fracture Toughness of Arcan Adhesive Joint

2015 ◽  
Vol 786 ◽  
pp. 3-7 ◽  
Author(s):  
Kevin Prakash ◽  
Khairul Salleh Basaruddin ◽  
Mohd Afendi Rojan ◽  
Haftirman Idrus
Keyword(s):  
Adhesive Joint ◽  
Mixed Mode ◽  
Initial Crack ◽  
Mode I ◽  
Mode Ii ◽  
Mixed Mode Loading ◽  
Fracture Test ◽  
Crack Line ◽  
Loading Mode ◽  
Adhesive Thickness

This paper presents the experimental investigation on adhesive joint under three loading angles using a modified Arcan jig. Fracture test was performed using the fabricated Arcan specimens and Araldite adhesive with loading angle of 0°, 90° and 45° to represent Mode I, Mode II and mixed Mode loading, respectively. Eighteen specimens were prepared with adhesive thickness of 6 mm and nine of them with interface crack length of 5 mm. The result shows the stress intensity factor, K is influenced by the loading angle and the initial crack-line directions. KI was found greater than KII .

Mixed-Mode Testing for an Asymmetric Four-Point Bending Configuration of Polyurethane Foams

2015 ◽  
Vol 760 ◽  
pp. 239-244 ◽  
Author(s):  
Dragoş Alexandru Apostol ◽  
Dan Mihai Constantinescu ◽  
Liviu Marsavina ◽  
Emanoil Linul
Keyword(s):  
Fracture Toughness ◽  
Mixed Mode ◽  
Polyurethane Foams ◽  
Mode I ◽  
Plastic Foams ◽  
Four Point Bending ◽  
Different Types ◽  
Dynamic Loading Conditions ◽  
Static And Dynamic Loading

Many efforts have been made recently to determine the fracture toughness of different types of foams in static and dynamic loading conditions. Taking into account that there is no standard method for the experimental determination of the fracture toughness of plastic foams, different procedures and specimens were used. This paper presents the polyurethane foam fracture toughness results obtained experimentally for three foam densities. Asymmetric four-point bending specimens were used for determining fracture toughness in mode I and in a mixed one, and also the influence of the loading speed and geometry of the specimen were investigated.

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