Thermoelastic determination of crack-tip coordinates in composites

S. H. Ju; R. E. Rowlands

doi:10.1016/j.ijsolstr.2006.12.003

Thermoelastic determination of crack-tip coordinates in composites

S. H. Ju, R. E. Rowlands

Department of Civil Engineering

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

7 Citations (Scopus)

Abstract

Many experimental methods for determining stress intensity factors involve knowing the position of the crack-tip. Using measured coordinates of the crack-tip before testing can be insufficiently reliable. On the other hand, results herein show that assuming the maximum measured signal occurs at the crack-tip can be erroneous. The present study develops and demonstrates a least-squares method to evaluate the crack-tip coordinates of composites accurately and systematically from measured temperature information.

Original language	English
Pages (from-to)	4845-4859
Number of pages	15
Journal	International Journal of Solids and Structures
Volume	44
Issue number	14-15
DOIs	https://doi.org/10.1016/j.ijsolstr.2006.12.003
Publication status	Published - 2007 Jul

All Science Journal Classification (ASJC) codes

Modelling and Simulation
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Applied Mathematics

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10.1016/j.ijsolstr.2006.12.003

Cite this

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title = "Thermoelastic determination of crack-tip coordinates in composites",

abstract = "Many experimental methods for determining stress intensity factors involve knowing the position of the crack-tip. Using measured coordinates of the crack-tip before testing can be insufficiently reliable. On the other hand, results herein show that assuming the maximum measured signal occurs at the crack-tip can be erroneous. The present study develops and demonstrates a least-squares method to evaluate the crack-tip coordinates of composites accurately and systematically from measured temperature information.",

author = "Ju, {S. H.} and Rowlands, {R. E.}",

note = "Funding Information: S.H. Ju was supported by NSC in R.O.C. (Project No. NSC-39123F). R.E. Rowlands acknowledges partial support from AFOSR (Project FA9550-04-1-0238) and NSF (Project CMS-0301269) on some aspects of this research. Special thanks to Brad Boyce of Stress Photonics, Madison, WI, for his assistance and use of the DeltaTherm system, and to Dr. Yean-Yau Ni, Kunn Chuan Enterprise Co., Ltd., Taichun, Taiwan (formerly, Univ. of Wisconsin, Madison).",

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AU - Ju, S. H.

AU - Rowlands, R. E.

N1 - Funding Information: S.H. Ju was supported by NSC in R.O.C. (Project No. NSC-39123F). R.E. Rowlands acknowledges partial support from AFOSR (Project FA9550-04-1-0238) and NSF (Project CMS-0301269) on some aspects of this research. Special thanks to Brad Boyce of Stress Photonics, Madison, WI, for his assistance and use of the DeltaTherm system, and to Dr. Yean-Yau Ni, Kunn Chuan Enterprise Co., Ltd., Taichun, Taiwan (formerly, Univ. of Wisconsin, Madison).

PY - 2007/7

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N2 - Many experimental methods for determining stress intensity factors involve knowing the position of the crack-tip. Using measured coordinates of the crack-tip before testing can be insufficiently reliable. On the other hand, results herein show that assuming the maximum measured signal occurs at the crack-tip can be erroneous. The present study develops and demonstrates a least-squares method to evaluate the crack-tip coordinates of composites accurately and systematically from measured temperature information.

AB - Many experimental methods for determining stress intensity factors involve knowing the position of the crack-tip. Using measured coordinates of the crack-tip before testing can be insufficiently reliable. On the other hand, results herein show that assuming the maximum measured signal occurs at the crack-tip can be erroneous. The present study develops and demonstrates a least-squares method to evaluate the crack-tip coordinates of composites accurately and systematically from measured temperature information.

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DO - 10.1016/j.ijsolstr.2006.12.003

M3 - Article

AN - SCOPUS:33947697172

SN - 0020-7683

VL - 44

SP - 4845

EP - 4859

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

IS - 14-15

ER -

Thermoelastic determination of crack-tip coordinates in composites

Abstract

All Science Journal Classification (ASJC) codes

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