Prevalent mode II fracture assessment of inclined U-notched specimens made of tungsten-copper functionally graded material

Mohammadi, Hossein; Salavati, H.; Alizadeh, Y.; Berto, Filippo

doi:10.1016/j.tafmec.2017.01.010

Cited by 10 publications

(10 citation statements)

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“…The mentioned criterion has been used in different investigations to predict the fracture of notched specimens made of functionally graded materials [32,33,31,[27][28][29][30]. However, in this study, as the notch root has been located in a very ductile region, the mentioned criterion cannot give reasonably accurate results.…”

Section: Fracture Criterion Based On Averaged Sed In Fgms and Equivalmentioning

confidence: 94%

“…Unlike homogeneous materials, in FGMs due to a gradual change in material properties, the outer boundary of control volume is no longer a circular arc, but rather an oval arc is assumed. This notion has been used in a number of previous studies on fracture of notched specimens made of FGMs [32,31,39,[27][28][29][30]. For a U-notched FGM specimen with a material variation in the xdirection under mode I, the outer boundary can be determined by a numerical approach using the following equations.…”

Section: Fracture Criterion Based On Averaged Sed In Fgms and Equivalmentioning

confidence: 99%

“…Recently, the averaged SED criterion was employed to predict the fracture of notched specimens made of different types of materials such as Polyurethane (PUR) [25,26], tungsten-copper functionally graded material [27][28][29][30][31] and functionally graded steels [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…To predict the fracture of notched specimens made of FGMs by the averaged SED criterion, unlike homogeneous materials for which the outer boundary of the control volume is a circular arc, the strain energy density is averaged over a well-defined control volume which its outer boundary is an oval arc [27][28][29][30][31][32][33][34]. In these works, the notch depth was in brittle or semi-brittle region.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ductile Failure Prediction of U-Notched Bainitic Functionally Graded Steel Specimens Using the Equivalent Material Concept Combined with the Averaged Strain Energy Density Criterion

Salavati

Mohammadi

2019

Phys Mesomech

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In this paper, the ductile fracture of bainitic Functionally Graded Steel (FGS) has been studied. Fracture tests was performed on U-notched specimens made of bainitic FGS under mode I. The averaged Strain Energy Density (SED) criterion combined with Equivalent Material Concept (EMC) was employed to predict the ductile fracture of bainitic FGS. For this purpose, first based on EMC, the mechanical properties of a virtual brittle FGS was obtained. Then the averaged value of SED over a well-defined control volume was calculated by finite element analysis for U-notched virtual brittle FGS. After that, the fracture loads was obtained based on the averaged SED criterion. The agreement between experimental fracture loads and theoretical predictions was good.

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Section: Fracture Criterion Based On Averaged Sed In Fgms and Equivalmentioning

confidence: 94%

Section: Fracture Criterion Based On Averaged Sed In Fgms and Equivalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ductile Failure Prediction of U-Notched Bainitic Functionally Graded Steel Specimens Using the Equivalent Material Concept Combined with the Averaged Strain Energy Density Criterion

Salavati

Mohammadi

2019

Phys Mesomech

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“…The procedure of fabrication has been provided in details in Ref. [30]. In this research, in order to produce a six-lay-Fig.…”

Section: Materials Propertiesmentioning

confidence: 99%

Prevalent Mode II Fracture Investigation of VO-Notched Specimens Made of Tungsten–Copper Functionally Graded Materials

et al. 2020

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Â ñòàòüå ýêñïåðèìåíòàëüíî è òåîðåòè÷åñêè èçó÷åí ïðåîáëàäàþùèé ðåaeèì ðàçðóøåíèÿ îáðàçöîâ ñ V-îáðàçíûìè íàäðåçàìè ñ êîíöåâûìè îòâåðñòèÿìè (VO-îáðàçíûå íàäðåçû) èç ôóíêöèîíàëüíî-ãðàäèåíòíîãî ìàòåðèàëà ñîñòàâà WCu. Îáðàçöû èçãîòàâëèâàëè ìåòîäîì ïîðîøêîâîé ìåòàëëóðãèè. Èñïûòàíèÿ íà ðàçðóøåíèå âîëüôðàì-ìåäíûõ îáðàçöîâ ñ VO-îáðàçíûì íàäðåçîì ïðè íàãðóaeåíèè ïðåèìóùåñòâåííî ïî òèïó II ïðîâîäèëè äëÿ ðàçëè÷íûõ çíà÷åíèé ðàäèóñà âåðøèíû íàäðåçà è åãî ãëóáèíû. Âåëè÷èíó ðàçðóøàþùåé íàãðóçêè îáðàçöîâ ñ VO-îáðàçíûì íàäðåçîì â óñëîâèÿõ ïðåîáëàäàþùåãî ðåaeèìà íàãðóaeåíèÿ îïðåäåëÿëè íà îñíîâå êðèòåðèÿ ïëîòíîñòè ýíåðãèè äåôîðìàöèè, óñðåäíåííîé ïî çàäàííîìó êîíòðîëüíîìó îáúåìó. Èçó÷åíî âëèÿíèå ðàäèóñà âåðøèíû, ãëóáèíû è óãëà ðàñêðûòèÿ íàäðåçà íà âåëè÷èíó ðàçðóøàþùåé íàãðóçêè. Ïîëó÷åííûå ðåçóëüòàòû ïîäòâåðaeäàþò ïðèìåíèìîñòü òåîðèè ïëîòíîñòè ýíåðãèè äåôîðìàöèè äëÿ èçó÷åíèÿ ðàçðóøåíèÿ îáðàçöîâ ãðàäèåíòíûõ ìàòåðèàëîâ ñ VO-îáðàçíûì íàäðåçîì â óñëîâèÿõ ïðåîáëàäàþùåãî ðåaeèìà íàãðóaeåíèÿ.Êëþ÷åâûå ñëîâà: ôóíêöèîíàëüíî-ãðàäèåíòíûå ìàòåðèàëû, âîëüôðàì, ìåäü, VO-îáðàçíûé íàäðåç, íàãðóaeåíèå òèïà II, ïëîòíîñòü ýíåðãèè äåôîðìàöèè

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Mixed Mode Crack Initiation and Propagation in Functionally Graded Materials: Experimental and Numerical Investigations

Najimi¹,

Aboutalebi²

2023

Iran J Sci Technol Trans Mech Eng

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Prevalent mode II fracture assessment of inclined U-notched specimens made of tungsten-copper functionally graded material

Cited by 10 publications

References 83 publications

Ductile Failure Prediction of U-Notched Bainitic Functionally Graded Steel Specimens Using the Equivalent Material Concept Combined with the Averaged Strain Energy Density Criterion

Ductile Failure Prediction of U-Notched Bainitic Functionally Graded Steel Specimens Using the Equivalent Material Concept Combined with the Averaged Strain Energy Density Criterion

Prevalent Mode II Fracture Investigation of VO-Notched Specimens Made of Tungsten–Copper Functionally Graded Materials

Mixed Mode Crack Initiation and Propagation in Functionally Graded Materials: Experimental and Numerical Investigations

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