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Determining Forming Limit Diagrams Using Sub-Sized Specimen Geometry and Comparing FLD Evaluation Methods

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F21%3AN0000009" target="_blank" >RIV/26316919:_____/21:N0000009 - isvavai.cz</a>

  • Alternative codes found

    RIV/49777513:23210/21:43961664

  • Result on the web

    <a href="https://www.mdpi.com/2075-4701/11/3/484/htm" target="_blank" >https://www.mdpi.com/2075-4701/11/3/484/htm</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/met11030484" target="_blank" >10.3390/met11030484</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Determining Forming Limit Diagrams Using Sub-Sized Specimen Geometry and Comparing FLD Evaluation Methods

  • Original language description

    Sheet metal forming boundaries are established using the forming limit diagram (FLD). The Nakajima and Marciniak tests, which are based on stretching a material using a punch, are the most commonly used methods for determining the FLD or fracture forming limit diagram (FFLD). The results are usually evaluated by calculating local strain, strain rates, specimen thickness reduction or fracture strain. When the amount of experimental material is insufficient, miniaturization of the testing specimens may be a solution. However, the interchangeability of the results for standard and miniaturized specimens has not been proven yet. In this study, the Nakajima tests were performed using standard and sub-sized specimens made of manganese-boron steel 22MnB5, commonly used in the automotive industry. Afterwards, four FLD/FFLD evaluation methods were applied and compared. The miniaturized specimens yielded higher strain values, which was explained by the varied ratio of material thickness/punch diameter and different bending conditions. The highest compliance of the results was recorded for the standard and miniaturized FFLD.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2021

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    METALS

  • ISSN

    2075-4701

  • e-ISSN

    2075-4701

  • Volume of the periodical

    11

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    11

  • Pages from-to

    nestránkováno

  • UT code for WoS article

    000633875600001

  • EID of the result in the Scopus database

    2-s2.0-85102352055