Evaluation of toughness by finite fracture mechanics from crack onset strain of brittle coatings on polymers

被引：37

作者：

Andersons, J. ^{[1
]}

Modniks, J. ^{[1
]}

Leterrier, Y. ^{[2
]}

Tornare, G. ^{[2
]}

Dumont, P. ^{[2
]}

Manson, J. -A. E. ^{[2
]}

机构：

[1] Univ Latvia, Inst Polymer Mech, LV-1006 Riga, Latvia

[2] Ecole Polytech Fed Lausanne, Lab Technol Composites & Polymeres, CH-1015 Lausanne, Switzerland

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2008年 / 49卷 / 02期

关键词：

coating; polymer film; crack onset strain; fracture toughness;

D O I：

10.1016/j.tafmec.2007.11.002

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Crack onset strain measurements of a confined layer in tension provide the means for layer toughness estimation. The procedure can be simplified if steady-state conditions prevail starting from the commencement of crack propagation, an assumption frequently employed in energy release rate evaluation. It is demonstrated, by numerical analysis of experimental data, that an estimate of the defect size in the film is needed in order to reliably evaluate its fracture toughness from the crack onset strain. Only if microcracks of sufficient size are present in the brittle layer, the steady-state energy release rate at the crack onset strain can be identified with layer toughness. Otherwise, the toughness estimate obtained by such a procedure is likely to be non-conservative. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：151 / 157

页数：7

共 40 条

[1] The role of initial flaw size, elastic compliance and plasticity in channel cracking of thin films [J].

Ambrico, JM ;

Begley, MR .

THIN SOLID FILMS, 2002, 419 (1-2) :144-153

[2]

ANDERSON J, IN PRESS ENG FRACT M

[3] Analysis of thin film cracking and buckling on compliant substrate by fragmentation test [J].

Andersons, J. ;

Tarasovs, S. ;

Leterrier, Y. .

ADVANCES IN FRACTURE AND DAMAGE MECHANICS VI, 2007, 348-349 :329-+

[4] Evaluation of interfacial stress transfer efficiency by coating fragmentation test [J].

Andersons, J. ;

Leterrier, Y. ;

Tornare, G. ;

Dumont, P. ;

Manson, J.-A.E. .

MECHANICS OF MATERIALS, 2007, 39 (09) :834-844

[5]

ANDERSONS J, UNPUB INT J FRACT

[6] STATISTICAL-THEORY FOR FRACTURE OF BRITTLE STRUCTURES SUBJECTED TO NONUNIFORM POLYAXIAL STRESSES [J].

BATDORF, SB ;

CROSE, JG .

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1974, 41 (02) :459-464

[7]

Berthelot J.-M., 2003, Applied Mechanics Review, V56, P111, DOI 10.1115/1.1519557

[8] CRACKING OF THIN BONDED FILMS IN RESIDUAL TENSION [J].

BEUTH, JL .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1992, 29 (13) :1657-1675

[9] Cracking of thin films bonded to elastic-plastic substrates [J].

Beuth, JL ;

Klingbeil, NW .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1996, 44 (09) :1411-1428

[10] Transverse ply cracking in cross-ply CFRP laminates - Initiation or propagation controlled? [J].

Boniface, L ;

Smith, PA ;

Bader, MG ;

Rezaifard, AH .

JOURNAL OF COMPOSITE MATERIALS, 1997, 31 (11) :1080-1112

← 1 2 3 4 →