Comparison of Tensile and Creep Properties of SAC305 and SACX0807 at Room Temperature with DIC Application

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00582398" target="_blank" >RIV/68081723:_____/24:00582398 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27230/24:10254098

Výsledek na webu

<a href="https://www.mdpi.com/2076-3417/14/2/604" target="_blank" >https://www.mdpi.com/2076-3417/14/2/604</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/app14020604" target="_blank" >10.3390/app14020604</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Tensile and Creep Properties of SAC305 and SACX0807 at Room Temperature with DIC Application

Popis výsledku v původním jazyce

The contribution presents the verification of the methodology of accelerated creep tests from the point of view of obtaining more information about the stress-strain behaviour of the investigated materials using the Digital Image Correlation method. Creep tests are performed on SAC305 and SACX0807 lead-free solders and are supplemented by numerical modelling using the finite element method, considering the viscoplastic model based on the theory of Perzyna, Chaboche, and Norton. The stress-strain behaviour of both solders appears to be very similar at applied strain rates of 0.0002-0.0026%/s and applied creep stresses of 15-28 MPa. Initially, the viscoplastic model is calibrated using an analytical approach. Then, the finite element model updating approach is used to optimise the material parameters based on the simultaneous simulations of creep and tensile tests. As a result, the total objective function value is reduced almost five times due to optimisation. The proposed type of accelerated test with an hourglass specimen proves to be suitable for calibrating the considered class of viscoplastic models. The main benefit is that a single specimen is required to obtain creep curves on various stress levels.

Název v anglickém jazyce

Comparison of Tensile and Creep Properties of SAC305 and SACX0807 at Room Temperature with DIC Application

Popis výsledku anglicky

The contribution presents the verification of the methodology of accelerated creep tests from the point of view of obtaining more information about the stress-strain behaviour of the investigated materials using the Digital Image Correlation method. Creep tests are performed on SAC305 and SACX0807 lead-free solders and are supplemented by numerical modelling using the finite element method, considering the viscoplastic model based on the theory of Perzyna, Chaboche, and Norton. The stress-strain behaviour of both solders appears to be very similar at applied strain rates of 0.0002-0.0026%/s and applied creep stresses of 15-28 MPa. Initially, the viscoplastic model is calibrated using an analytical approach. Then, the finite element model updating approach is used to optimise the material parameters based on the simultaneous simulations of creep and tensile tests. As a result, the total objective function value is reduced almost five times due to optimisation. The proposed type of accelerated test with an hourglass specimen proves to be suitable for calibrating the considered class of viscoplastic models. The main benefit is that a single specimen is required to obtain creep curves on various stress levels.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TN01000024" target="_blank" >TN01000024: Národní centrum kompetence - Kybernetika a umělá inteligence</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Applied Sciences-Basel

ISSN

2076-3417

e-ISSN

2076-3417

Svazek periodika

14

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

21

Strana od-do

604

Kód UT WoS článku

001149036700001

EID výsledku v databázi Scopus

2-s2.0-85192477704