Cavitation damage of epoxy resin subjected to uniaxial tensile loading

In turbomachinery, such as turbine, pump, and valve, components damage caused by collapsing cavitation bubbles has been a critical issue that needs a proper solution. For this reason, investigation on the cavitation erosion behavior of materials as well as the life prediction techniques has been ext...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Masaharu HIBI, Farid TRIAWAN, Kazuaki INABA, Kosuke TAKAHASHI, Kikuo KISHIMOTO, Keisuke HAYABUSA, Hiroaki NAKAMOTO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2018
Materias:	damage fracture cavitation tensile load epoxy resin Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/11a046c2d6ed41e68bf5739d2ca425e4
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:11a046c2d6ed41e68bf5739d2ca425e4
record_format	dspace
spelling	oai:doaj.org-article:11a046c2d6ed41e68bf5739d2ca425e42021-11-26T07:14:14ZCavitation damage of epoxy resin subjected to uniaxial tensile loading2187-974510.1299/mej.17-00151https://doaj.org/article/11a046c2d6ed41e68bf5739d2ca425e42018-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/1/5_17-00151/_pdf/-char/enhttps://doaj.org/toc/2187-9745In turbomachinery, such as turbine, pump, and valve, components damage caused by collapsing cavitation bubbles has been a critical issue that needs a proper solution. For this reason, investigation on the cavitation erosion behavior of materials as well as the life prediction techniques has been extensively conducted. Moreover, a number of repairing techniques, such as by a surface coating of polymeric materials, has been established. However, in real operation, cavitation is actually not the only load acquired by the components. Other external loads, such as centrifugal force and hydraulic pressure, may also affect the generation of damage. Therefore, its effect on the lifetime needs to be considered carefully. In this paper, the behavior of cavitation damage of epoxy resin specimens subjected to uniaxial tensile loading is reported. A self-developed testing device was used to conduct a cavitation test based on ASTM G32 while at the same time exerting a constant uniaxial tensile load to the specimen. Using this device, various levels of tensile stress effect on the cavitation damage was examined. As a result, besides erosion damage, we revealed that the specimens demonstrated fracture when a certain tensile load was applied. Furthermore, as the tensile load was increased, the time to fracture was shortened significantly, indicating the pronounced effect of tensile stress on the damage formation. The crack growth mechanism was then analyzed by fractography. The result indicated that the crack propagation under a mixed condition of cavitation and tensile loads was most likely driven by the combination of creep deformation and fatigue-like crack growth. Finally, a mathematical relationship between tensile stress and cavitation damage life was proposed. The relationship is important to enhancing the existing theory of cavitation damage evaluation in e.g. turbomachinery application.Masaharu HIBIFarid TRIAWANKazuaki INABAKosuke TAKAHASHIKikuo KISHIMOTOKeisuke HAYABUSAHiroaki NAKAMOTOThe Japan Society of Mechanical Engineersarticledamagefracturecavitationtensile loadepoxy resinMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 1, Pp 17-00151-17-00151 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	damage fracture cavitation tensile load epoxy resin Mechanical engineering and machinery TJ1-1570
spellingShingle	damage fracture cavitation tensile load epoxy resin Mechanical engineering and machinery TJ1-1570 Masaharu HIBI Farid TRIAWAN Kazuaki INABA Kosuke TAKAHASHI Kikuo KISHIMOTO Keisuke HAYABUSA Hiroaki NAKAMOTO Cavitation damage of epoxy resin subjected to uniaxial tensile loading
description	In turbomachinery, such as turbine, pump, and valve, components damage caused by collapsing cavitation bubbles has been a critical issue that needs a proper solution. For this reason, investigation on the cavitation erosion behavior of materials as well as the life prediction techniques has been extensively conducted. Moreover, a number of repairing techniques, such as by a surface coating of polymeric materials, has been established. However, in real operation, cavitation is actually not the only load acquired by the components. Other external loads, such as centrifugal force and hydraulic pressure, may also affect the generation of damage. Therefore, its effect on the lifetime needs to be considered carefully. In this paper, the behavior of cavitation damage of epoxy resin specimens subjected to uniaxial tensile loading is reported. A self-developed testing device was used to conduct a cavitation test based on ASTM G32 while at the same time exerting a constant uniaxial tensile load to the specimen. Using this device, various levels of tensile stress effect on the cavitation damage was examined. As a result, besides erosion damage, we revealed that the specimens demonstrated fracture when a certain tensile load was applied. Furthermore, as the tensile load was increased, the time to fracture was shortened significantly, indicating the pronounced effect of tensile stress on the damage formation. The crack growth mechanism was then analyzed by fractography. The result indicated that the crack propagation under a mixed condition of cavitation and tensile loads was most likely driven by the combination of creep deformation and fatigue-like crack growth. Finally, a mathematical relationship between tensile stress and cavitation damage life was proposed. The relationship is important to enhancing the existing theory of cavitation damage evaluation in e.g. turbomachinery application.
format	article
author	Masaharu HIBI Farid TRIAWAN Kazuaki INABA Kosuke TAKAHASHI Kikuo KISHIMOTO Keisuke HAYABUSA Hiroaki NAKAMOTO
author_facet	Masaharu HIBI Farid TRIAWAN Kazuaki INABA Kosuke TAKAHASHI Kikuo KISHIMOTO Keisuke HAYABUSA Hiroaki NAKAMOTO
author_sort	Masaharu HIBI
title	Cavitation damage of epoxy resin subjected to uniaxial tensile loading
title_short	Cavitation damage of epoxy resin subjected to uniaxial tensile loading
title_full	Cavitation damage of epoxy resin subjected to uniaxial tensile loading
title_fullStr	Cavitation damage of epoxy resin subjected to uniaxial tensile loading
title_full_unstemmed	Cavitation damage of epoxy resin subjected to uniaxial tensile loading
title_sort	cavitation damage of epoxy resin subjected to uniaxial tensile loading
publisher	The Japan Society of Mechanical Engineers
publishDate	2018
url	https://doaj.org/article/11a046c2d6ed41e68bf5739d2ca425e4
work_keys_str_mv	AT masaharuhibi cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading AT faridtriawan cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading AT kazuakiinaba cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading AT kosuketakahashi cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading AT kikuokishimoto cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading AT keisukehayabusa cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading AT hiroakinakamoto cavitationdamageofepoxyresinsubjectedtouniaxialtensileloading
_version_	1718409701953110016

Cavitation damage of epoxy resin subjected to uniaxial tensile loading

Ejemplares similares