Results 21 to 30 of about 132,138 (320)

On the indentation size effect in spherical indentation

open access: yesPhilosophical Magazine, 2006
Size effects in plasticity at small length scales have been widely reported in a variety of loading situations. The hardness size effect has often been cited as an archetypal example. The indentation size effect was clearly demonstrated by Lim and Chaudhri (1999) in spherical indentation experiments on Copper and subsequently in experiments on Iridium ...
Spary, Ian   +2 more
openaire   +2 more sources

Permanent indentation characterization for low-velocity impact modelling using three-point bending test [PDF]

open access: yes, 2014
This paper deals with the origin of permanent indentation in composite laminates subjected to low-velocity impact. The three-point bending test is used to exhibit a non-closure of matrix crack which is assumed as a cause of permanent indentation ...
Bouvet, Christophe   +3 more
core   +1 more source

Development of estimation method of strain rate dependency of materials based on a high-velocity impingement test with a solid sphere

open access: yesNihon Kikai Gakkai ronbunshu, 2020
Johnson-Cook (JC) flow stress model is widely used in computer aided engineering (CAE) for simulations of car crash and machining behaviors. The JC parameter C, which is a material constant in the model associated with strain rate dependency, is usually ...
Kiyohiro ITO   +2 more
doaj   +1 more source

Depth-sensing indentation tests in studying plastic instabilities [PDF]

open access: yes, 2004
This review surveys the phenomenon of plastic instabilities occurring in depth-sensing indentation measurements. Investigations presented focus on the characterization of Portevin-Le Chatelier type instabilities observed in different metal alloys during ...
Gubicza, Jenő   +7 more
core   +1 more source

Enhancing indentation and impact resistance in auxetic composite materials

open access: yes, 2020
Auxetic materials exhibiting a negative Poisson's ratio are of great research interest due to their unusual mechanical responses and a wide range of potential deployment.
Tiantian Li, Fan Liu, Lifeng Wang
semanticscholar   +1 more source

Molecular dynamics simulation of indentation-cutting on Ni and Cu by rigid Fe tool (Focus on combination of surface structure of tool and work)

open access: yesNihon Kikai Gakkai ronbunshu, 2020
2D-like indentations are performed by molecular dynamics simulation as “nanometric indentation cutting”. A 90 degree triangle rigid bcc-Fe indenter with (001) or (110) surfaces is continuously drove into single crystalline fcc-Ni and Cu with free side ...
Kisaragi YASHIRO   +3 more
doaj   +1 more source

Low velocity impact modeling in composite laminates capturing permanent indentation [PDF]

open access: yes, 2012
This paper deals with impact damage and permanent indentation modeling. A numerical model has been elaborated in order to simulate the different impact damage types developing during low velocity/low energy impact.
Barrau, Jean-Jacques   +2 more
core   +1 more source

Impact of Indentation in Programming [PDF]

open access: yesInternational Journal of Programming Languages and Applications, 2013
In computer programming languages, indentation formats program source code to improve readability. Programming languages make use of indentation to define program structure .Programmers use indentation to understand the structure of their programs to human readers.
openaire   +4 more sources

Experimental analysis of damage creation and permanent indentation on highly oriented plates [PDF]

open access: yes, 2009
This paper presents an experimental investigation concerning low-velocity impact and quasi-static indentation tests on highly oriented laminates used in aeronautical and aerospace applications.
Barrau, Jean-Jacques   +3 more
core   +1 more source

Competing indentation deformation mechanisms in glass using different strengthening methods

open access: yesFrontiers in Materials, 2016
Chemical strengthening via ion exchange, thermal tempering, and lamination are proven techniques for strengthening of oxide glasses. For each of these techniques, the strengthening mechanism is conventionally ascribed to the linear superposition of the ...
Jian Luo   +5 more
doaj   +1 more source

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