Naslov
Fracture toughness of alumina ceramics determined by indentation technique

Autori
Majić, Marijana ; Ćurković, Lidija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
PROGRAM AND THE BOOK OF ABSTRACTS 1st Conference of the Serbian Ceramic Society / Bošković, Snežana ; Branković, Zorica ; Grbović Novaković, Jasmina - Beograd : ALTA NOVA, 2011, 44-44

ISBN
978-86-7306-107-8

Skup
1st Conference of the Serbian Ceramic Society (1CSCS-2011)

Mjesto i datum
Beograd, Srbija, 17.03.2011. - 18.03.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
fracture toughness ; alumina ceramics ; Vickers hardness ; indentation technique

Sažetak
Fracture toughness (KIC) of high purity cold isostatically pressed alumina ceramics was determined from the size of cracks induced by Vickers hardness testing at the wide range of loads. The observed cracks appeared at following loads: 4.905, 9.81, 29.43 and 49.05 N. For the fracture toughness calculation different models were compared. It was found that fracture toughness increases by increasing applied load for all applied models, which is explained by the indentation size effect. The fracture toughness overestimation can lead to product malfunction. Therefore, the use of the Anstis model, which gives the smallest fracture toughness values, is suggested.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA