Micromechanics of damage accumulation in a 2.5D woven C-fiber/SiC ceramic composite

N. Jekabsons; J. Varna

doi:10.1023/A:1012336618540

Micromechanics of damage accumulation in a 2.5D woven C-fiber/SiC ceramic composite

N. Jekabsons^*
, J. Varna

^*Šī darba korespondējošais autors

Luleå University of Technology

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

12 Atsauces (Scopus)

Kopsavilkums

The morphology of a C/PyC/SiC ceramic composite is studied and its microdamage mechanisms are revealed. Some models based on the micromechanical fracture mechanics are proposed to describe the possible damage processes. The influence of the observed microdamage on the stiffness reduction is studied. It is shown that the delamination between the layers and the cracks in the coating alone cannot explain the stiffness reduction observed in tests. Debonding between the SiC coating and pyrocarbon is suggested as another mechanism of the stiffness reduction.

Oriģinālvaloda	Angļu
Lapas (no-līdz)	289-298
Lapu skaits	10
Žurnāls	Mechanics of Composite Materials
Sējums	37
Izdevuma numurs	4
DOIs	https://doi.org/10.1023/A:1012336618540
Publikācijas statuss	Publicēts - jūl. 2001
Ārēji publicēts	Jā

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title = "Micromechanics of damage accumulation in a 2.5D woven C-fiber/SiC ceramic composite",

abstract = "The morphology of a C/PyC/SiC ceramic composite is studied and its microdamage mechanisms are revealed. Some models based on the micromechanical fracture mechanics are proposed to describe the possible damage processes. The influence of the observed microdamage on the stiffness reduction is studied. It is shown that the delamination between the layers and the cracks in the coating alone cannot explain the stiffness reduction observed in tests. Debonding between the SiC coating and pyrocarbon is suggested as another mechanism of the stiffness reduction.",

keywords = "Ceramic composite, Damage, Microdamage, Micromechanics, SiC, Tensile test",

author = "N. Jekabsons and J. Varna",

year = "2001",

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AU - Jekabsons, N.

AU - Varna, J.

PY - 2001/7

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N2 - The morphology of a C/PyC/SiC ceramic composite is studied and its microdamage mechanisms are revealed. Some models based on the micromechanical fracture mechanics are proposed to describe the possible damage processes. The influence of the observed microdamage on the stiffness reduction is studied. It is shown that the delamination between the layers and the cracks in the coating alone cannot explain the stiffness reduction observed in tests. Debonding between the SiC coating and pyrocarbon is suggested as another mechanism of the stiffness reduction.

AB - The morphology of a C/PyC/SiC ceramic composite is studied and its microdamage mechanisms are revealed. Some models based on the micromechanical fracture mechanics are proposed to describe the possible damage processes. The influence of the observed microdamage on the stiffness reduction is studied. It is shown that the delamination between the layers and the cracks in the coating alone cannot explain the stiffness reduction observed in tests. Debonding between the SiC coating and pyrocarbon is suggested as another mechanism of the stiffness reduction.

KW - Ceramic composite

KW - Damage

KW - Microdamage

KW - Micromechanics

KW - SiC

KW - Tensile test

UR - https://www.scopus.com/pages/publications/0035384969

U2 - 10.1023/A:1012336618540

DO - 10.1023/A:1012336618540

M3 - Article

AN - SCOPUS:0035384969

SN - 0191-5665

VL - 37

SP - 289

EP - 298

JO - Mechanics of Composite Materials

JF - Mechanics of Composite Materials

IS - 4

ER -

Micromechanics of damage accumulation in a 2.5D woven C-fiber/SiC ceramic composite

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