Damage tolerance assessment of AM 304L and cold spray fabricated 316L steels and its implications for attritable aircraft

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00548322" target="_blank" >RIV/61389021:_____/21:00548322 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21340/21:00351332

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0013794421003441?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013794421003441?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfracmech.2021.107916" target="_blank" >10.1016/j.engfracmech.2021.107916</a>

Result language

angličtina

Original language name

Damage tolerance assessment of AM 304L and cold spray fabricated 316L steels and its implications for attritable aircraft

Original language description

Assessing the damage tolerance and durability of additive manufactured (AM) materials is a key factor in the airworthiness certification of AM parts. Unfortunately, AM materials often exhibit a large degree of anisotropy, and their crack growth curves can differ markedly from those associated with the conventionally manufactured material. This paper reveals that when the changes in threshold and toughness due to the fabrication and annealing processes are accounted for, then crack growth in AM stainless steels can be represented by the same Hartman-Schijve equation that is associated with crack growth in the conventionally manufactured materials. Two different AM technologies and materials including 304L samples fabricated by wire arc additive manufacturing and 316L samples fabricated by cold spray deposition are considered for comparisons. The results are compared with the samples made of the corresponding material obtained through conventional manufacturing techniques. It is also shown that, for the cold spray specimens studied, there is a unique relationship between the crack growth rate (da/dN) and the change in the potential energy per cycle, and that this relationship is independent of both the build direction and the post processing conditions. The experimental data also suggests that the reduced strain to failure associated with cold sprayed additively manufactured 316L parts left in the as sprayed condition may not significantly affect the durability/economic life of the cold spray fabricated 316L replacement parts. This suggests that cold spray additively manufactured parts parts may be attractive for use in attritable aircraft.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Engineering Fracture Mechanics

ISSN

0013-7944

e-ISSN

1873-7315

Volume of the periodical

254

Issue of the periodical within the volume

September

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

107916

UT code for WoS article

000687618400002

EID of the result in the Scopus database

2-s2.0-85111839420