Microplastic Limit of Steels as a Means of Fatigue Limit Determination

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F13%3A43920446" target="_blank" >RIV/49777513:23210/13:43920446 - isvavai.cz</a>

Alternative codes found

RIV/68378297:_____/13:00424988

Result on the web

<a href="https://www.researchgate.net/publication/273531670_Microplastic_Limit_of_Steels_as_a_Means_of_Fatigue_Limit_Determination" target="_blank" >https://www.researchgate.net/publication/273531670_Microplastic_Limit_of_Steels_as_a_Means_of_Fatigue_Limit_Determination</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2013.12.115" target="_blank" >10.1016/j.proeng.2013.12.115</a>

Result language

angličtina

Original language name

Microplastic Limit of Steels as a Means of Fatigue Limit Determination

Original language description

The experimental determination of fatigue limit in case of steels represents an expensive and time consuming process not speaking about the necessity of a sufficient volume of representative material necessary for the specimens manufacturing, manufacturing of numerous test specimens, the need of an expensive (electrohydraulic) test equipment etc. Microplastic strains occurring at stresses below the yield point play a significant role at cyclic loading of metals withinin high cycle fatigue region. The microplastic strains cannot be measured by common methods due to the discontinuity of their distribution and a varying character of their level in the metal structure, but however, owing to the magnetoelastic effect the threshold stress at which dislocation pile-up stresses begin to obstruct the magnetic domains in rotation to the direction of the tensile stress can be determined by means of changes in magnetic permeability during tensile loading. In the paper, the changes of the magnetic permeability were measured indirectly ? by means of the changes of the electrical impedance (a.c. resistance). The measurement was performed on the normalized low-carbon structural steel CSN 41 1375. The microplastic limit was determined by evaluation the ?R-? records. A comparison with the fatigue limit in a reversed fatigue loading showed that the MPL was below the fatigue limit. The microplastic limit can thus be considered to separate non-damaging and damaging cyclic stresses. The paper presents the results of the abovementioned characteristics what may shorten and make cheeper the determination of the fatigue limit and non-damaging cyclic stresses of structural materials.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/GAP105%2F10%2F2052" target="_blank" >GAP105/10/2052: Damaging stresses below the fatigue limit as determined by changes in magnetic permeability</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

FATIGUE DESIGN 2013, INTERNATIONAL CONFERENCE PROCEEDINGS

ISBN

—

ISSN

1877-7058

e-ISSN

neuvedeno

Number of pages

8

Pages from-to

635-642

Publisher name

Elsevier Science BV

Place of publication

Amsterdam

Event location

Cetim, Senlis, FRANCE

Event date

Nov 27, 2013

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000338327000060