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Fracture mechanical modeling of brittle crack propagation and arrest of steel. 3. Application to duplex-type test; Kozai no zeisei kiretsu denpa teisi no rikigaku model. 3. Konseigata shiken eno tekiyo

Abstract

A proposal was made previously on a model of brittle crack propagation and arrest that considers the effect of crack opening suppression by using unbroken ligaments generated on steel plate surface and the effect that cracks precede in the central part of the plate thickness, based on a local limit stress theory for brittleness fracture. This paper discusses applicability of this model to a mixed type test, and elucidates causes for difference in the arrest tenacity of both types in a double tensile test of the standard size. The brittle crack propagation and arrest model based on the local limit stress theory was found applicable to a simulation of the mixed type test. Experimental crack propagation speed history and behavior of the arrest were reproduced nearly completely by using this model. When load stress is increased, the arrests in the mixed type test may be classified into arrests of both inside the steel plate and near the surface, cracks in the former position or arrest in the latter position, and rush of cracks into both positions. Furthermore, at higher stresses, the propagation speed drops once after cracks rushed into the test plate, but turns to a rise, leading to propagation  More>>
Authors:
Aihara, S; Tsuchida, Y; [1]  Machida, S; Yoshinari, H [2] 
  1. Nippon Steel Corp., Tokyo (Japan)
  2. The University of Tokyo, Tokyo (Japan). Faculty of Engineering
Publication Date:
Dec 31, 1996
Product Type:
Miscellaneous
Report Number:
ETDE/JP-mf-97721531
Reference Number:
SCA: 360103; 420500; PA: NEDO-96:913864; EDB-97:014899; SN: 97001718550
Resource Relation:
Other Information: PBD: Spr 1996; Related Information: Is Part Of Proceedings of the Spring Meeting of the Society of Naval Architects of Japan (1996). Part 2. Structure, materials, welding, construction, and design; PB: 219 p.; Nihon zosen gakkai (1996 nen) shunki koen ronbun maezuri. 2. Kozo, zairyo, yosetsu, kosaku, sekkei
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; STEELS; EMBRITTLEMENT; DESTRUCTIVE TESTING; STRESSES; CRACK PROPAGATION; FRACTURE MECHANICS; STRESS INTENSITY FACTORS; DYNAMICS; COMPUTERIZED SIMULATION
OSTI ID:
414217
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97721531; TRN: 96:913864
Availability:
Available from The Society of Naval Architects of Japan, 15-16, Toranomon 1-chome, Minato-ku, Tokyo, Japan; OSTI as DE97721531
Submitting Site:
NEDO
Size:
pp. 389-398
Announcement Date:
Jan 17, 1997

Citation Formats

Aihara, S, Tsuchida, Y, Machida, S, and Yoshinari, H. Fracture mechanical modeling of brittle crack propagation and arrest of steel. 3. Application to duplex-type test; Kozai no zeisei kiretsu denpa teisi no rikigaku model. 3. Konseigata shiken eno tekiyo. Japan: N. p., 1996. Web.
Aihara, S, Tsuchida, Y, Machida, S, & Yoshinari, H. Fracture mechanical modeling of brittle crack propagation and arrest of steel. 3. Application to duplex-type test; Kozai no zeisei kiretsu denpa teisi no rikigaku model. 3. Konseigata shiken eno tekiyo. Japan.
Aihara, S, Tsuchida, Y, Machida, S, and Yoshinari, H. 1996. "Fracture mechanical modeling of brittle crack propagation and arrest of steel. 3. Application to duplex-type test; Kozai no zeisei kiretsu denpa teisi no rikigaku model. 3. Konseigata shiken eno tekiyo." Japan.
@misc{etde_414217,
title = {Fracture mechanical modeling of brittle crack propagation and arrest of steel. 3. Application to duplex-type test; Kozai no zeisei kiretsu denpa teisi no rikigaku model. 3. Konseigata shiken eno tekiyo}
author = {Aihara, S, Tsuchida, Y, Machida, S, and Yoshinari, H}
abstractNote = {A proposal was made previously on a model of brittle crack propagation and arrest that considers the effect of crack opening suppression by using unbroken ligaments generated on steel plate surface and the effect that cracks precede in the central part of the plate thickness, based on a local limit stress theory for brittleness fracture. This paper discusses applicability of this model to a mixed type test, and elucidates causes for difference in the arrest tenacity of both types in a double tensile test of the standard size. The brittle crack propagation and arrest model based on the local limit stress theory was found applicable to a simulation of the mixed type test. Experimental crack propagation speed history and behavior of the arrest were reproduced nearly completely by using this model. When load stress is increased, the arrests in the mixed type test may be classified into arrests of both inside the steel plate and near the surface, cracks in the former position or arrest in the latter position, and rush of cracks into both positions. Furthermore, at higher stresses, the propagation speed drops once after cracks rushed into the test plate, but turns to a rise, leading to propagation and piercing. 8 refs., 15 figs., 3 tabs.}
place = {Japan}
year = {1996}
month = {Dec}
}