Fracture Toughness Evaluation of Granite in a High Temperature Pressurized Water Environment

Chiharu Wada; Tetsuo Shoji; Hideaki Takahashi

doi:10.1299/kikaia.52.1082

Fracture Toughness Evaluation of Granite in a High Temperature Pressurized Water Environment

Chiharu Wada, Tetsuo Shoji, Hideaki Takahashi

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Fracture toughness tests based on the R-curve method using the unloading compliance calibration technique were conducted under the condition of a simulated crustal environment of a geother-mal reservoir (confining pressure 18 MPa, maximum temperature~350°C). The results obtained indicate that a significant reduction of both the elastic modulus and fracture toughness was observed with increasing temperature, and a single linear relationship was obtained between the fracture toughness K_ic(J) and the elastic modulus E. In order to interpret the K_ic(J)-E relationship, a model was proposed using stress-strain-opening displacement at a crack tip based on the fracture process zone.

Original language	English
Pages (from-to)	1082-1088
Number of pages	7
Journal	Transactions of the Japan Society of Mechanical Engineers Series A
Volume	52
Issue number	476
DOIs	https://doi.org/10.1299/kikaia.52.1082
Publication status	Published - 1986

Keywords

Fracture
Fracture Toughness
Granite
High Temperature Pressurized Water
Initial Tangent Modulus
Process Zone
R-Curve
Stress-Strain-Opening Displacement
Unloading Compliance Method

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1299/kikaia.52.1082

Cite this

@article{1c07afbb5b1d45dda2cd81e433b65eaa,

title = "Fracture Toughness Evaluation of Granite in a High Temperature Pressurized Water Environment",

abstract = "Fracture toughness tests based on the R-curve method using the unloading compliance calibration technique were conducted under the condition of a simulated crustal environment of a geother-mal reservoir (confining pressure 18 MPa, maximum temperature~350°C). The results obtained indicate that a significant reduction of both the elastic modulus and fracture toughness was observed with increasing temperature, and a single linear relationship was obtained between the fracture toughness Kic(J) and the elastic modulus E. In order to interpret the Kic(J)-E relationship, a model was proposed using stress-strain-opening displacement at a crack tip based on the fracture process zone.",

keywords = "Fracture, Fracture Toughness, Granite, High Temperature Pressurized Water, Initial Tangent Modulus, Process Zone, R-Curve, Stress-Strain-Opening Displacement, Unloading Compliance Method",

author = "Chiharu Wada and Tetsuo Shoji and Hideaki Takahashi",

year = "1986",

doi = "10.1299/kikaia.52.1082",

language = "English",

volume = "52",

pages = "1082--1088",

journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",

issn = "0387-5008",

publisher = "Japan Society of Mechanical Engineers",

number = "476",

}

TY - JOUR

T1 - Fracture Toughness Evaluation of Granite in a High Temperature Pressurized Water Environment

AU - Wada, Chiharu

AU - Shoji, Tetsuo

AU - Takahashi, Hideaki

PY - 1986

Y1 - 1986

N2 - Fracture toughness tests based on the R-curve method using the unloading compliance calibration technique were conducted under the condition of a simulated crustal environment of a geother-mal reservoir (confining pressure 18 MPa, maximum temperature~350°C). The results obtained indicate that a significant reduction of both the elastic modulus and fracture toughness was observed with increasing temperature, and a single linear relationship was obtained between the fracture toughness Kic(J) and the elastic modulus E. In order to interpret the Kic(J)-E relationship, a model was proposed using stress-strain-opening displacement at a crack tip based on the fracture process zone.

AB - Fracture toughness tests based on the R-curve method using the unloading compliance calibration technique were conducted under the condition of a simulated crustal environment of a geother-mal reservoir (confining pressure 18 MPa, maximum temperature~350°C). The results obtained indicate that a significant reduction of both the elastic modulus and fracture toughness was observed with increasing temperature, and a single linear relationship was obtained between the fracture toughness Kic(J) and the elastic modulus E. In order to interpret the Kic(J)-E relationship, a model was proposed using stress-strain-opening displacement at a crack tip based on the fracture process zone.

KW - Fracture

KW - Fracture Toughness

KW - Granite

KW - High Temperature Pressurized Water

KW - Initial Tangent Modulus

KW - Process Zone

KW - R-Curve

KW - Stress-Strain-Opening Displacement

KW - Unloading Compliance Method

UR - http://www.scopus.com/inward/record.url?scp=0022701597&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022701597&partnerID=8YFLogxK

U2 - 10.1299/kikaia.52.1082

DO - 10.1299/kikaia.52.1082

M3 - Article

AN - SCOPUS:0022701597

VL - 52

SP - 1082

EP - 1088

JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

SN - 0387-5008

IS - 476

ER -

Fracture Toughness Evaluation of Granite in a High Temperature Pressurized Water Environment

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this