Impact fracture characteristics on fabricating process of Nb/MoSi2 laminate composite (I)

2000 ◽  
Vol 14 (8) ◽  
pp. 823-829
Author(s):  
Sang-Pill Lee ◽  
Han-Ki Yoon
Keyword(s):  
Laminate Composite ◽  
Impact Fracture ◽  
Fracture Characteristics

656 Charpy impact fracture characteristics of 6N01 aluminum alloy

2006 ◽  
Vol 2006 (0) ◽  
pp. 167-168
Author(s):  
Teruyoshi DAITOH ◽  
Go SHIMIZU ◽  
Masashi KANETSUNA ◽  
Ginsuke KONO
Keyword(s):  
Aluminum Alloy ◽  
Charpy Impact ◽  
Impact Fracture ◽  
Fracture Characteristics ◽  
6N01 Aluminum Alloy

scholarly journals Demineralization of cortical bone for improvement of Charpy impact fracture characteristics

2017 ◽  
Vol 12 (3) ◽  
pp. 16-00267-16-00267
Author(s):  
Kazuhiro FUJISAKI ◽  
Ayumi HASEGAWA ◽  
Hiroya YOKOYAMA ◽  
Kazuhiko SASAGAWA
Keyword(s):  
Cortical Bone ◽  
Charpy Impact ◽  
Impact Fracture ◽  
Fracture Characteristics

Gross Crack Initiation and Propagation in Brittle Thin Solid and Annular Disks Subjected to Impact Loading

1984 ◽  
Vol 106 (2) ◽  
pp. 167-172 ◽  
Author(s):  
W. Johnson ◽  
Y. L. Bai ◽  
S. K. Ghosh
Keyword(s):  
Impact Fracture ◽  
Rigid Base ◽  
Grinding Wheel ◽  
Crack Initiation And Propagation ◽  
Fracture Characteristics ◽  
Fracture Patterns ◽  
Initiation And Propagation ◽  
The Impact ◽  
Annular Disks ◽  
Circular Disks

This paper derives from a study of grinding wheel break-up behavior due to impact. The impact fracture characteristics of circular disks of plaster of Paris with a concentric central hole were studied experimentally [1] for three types of loading: (a) when the disks were suspended freely and loaded intensely at one point on their circumference by an explosive detonator; (b) when the disks were allowed to fall under gravity from a certain height on to a rigid base; and (c) when a disk, resting on a rigid base, was struck by a flat ended rigid body which was dropped on to it from a certain height. Quasi-static flattening tests on the disks were also carried out. The paper describes a theoretical investigation into the stress analysis of disks under impact, classifies the relevant damage sustained by them and attempts to unify the “gross” impact fracture patterns which arise in different modes of dynamic loading. The extent of local flattening of the quasi-statically loaded disks before fracture, is also reported. Good correlation between the theory and experimental results is obtained, especially for rings of diameter ratio (Di/D0) of around 0.5.

scholarly journals Impact Fracture of Composite and Homogeneous Nanoagglomerates

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
S. J. Antony ◽  
R. Moreno-Atanasio ◽  
J. Musadaidzwa ◽  
R. A. Williams
Keyword(s):  
Kinetic Energy ◽  
Impact Loading ◽  
Fracture Behaviour ◽  
Time Lag ◽  
Impact Fracture ◽  
Initial Kinetic Energy ◽  
Normal Impact ◽  
Fracture Characteristics ◽  
Hard Shell ◽  
The Moment

It is not yet clear on whether the fracture characteristics of structured composite capsules and homogeneous nanoagglomerates differ significantly under impact loading conditions. Experimental measurement of impact fracture properties of such small agglomerates is difficult, due to the length and time scales associated with this problem. Using computer simulations, here we show that nanoagglomerates are subjected to normal impact loading fracture within a few nanoseconds in a brittle manner. The restitution coefficient of the nanoagglomerates varies nonlinearly with initial kinetic energy. The fracture of nanoagglomerates does not always happen at the moment when they experience the maximum wall force, but occurs after a time lag of a few nanoseconds as characterised by impact survival time (IST) and IST index. IST is dependant on the initial kinetic energy, mechanical and geometric properties of the nanoagglomerates. For identical geometries of the capsules, IST index is higher for capsules with a soft shell than for these with a hard shell, an indication of the enhanced ability of the soft nanocapsules to dissipate impact energy. The DEM simulations reported here based on theories of contact mechanics provide fundamental insights on the fracture behaviour of agglomerates—at nanoscale, the structure of the agglomerates significantly influences their breakage behaviour.

Sign in / Sign up

Export Citation Format

Share Document