Visualization of crack blunting using secondary fluorescence in soft polymers

B. A. Samuel; M. A. Haque

doi:10.1016/j.polymertesting.2007.12.007

Visualization of crack blunting using secondary fluorescence in soft polymers

B. A. Samuel, M. A. Haque

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

2 Scopus citations

Abstract

A fluorescence-based technique was developed to visualize crack blunting and propagation in soft polymers. The technique, as demonstrated on poly-di-methyl siloxane, can also be applied on intrinsically non-fluorescent polymers after inducing secondary fluorescence with a suitable dye during the specimen preparation. The experimental results indicate enhanced performance of the technique in terms of spatial resolution and contrast compared to white-light microscopy. A dynamic plastic cohesive zone was observed ahead of the blunting crack tips in mode I loading, which was correlated to the computed emitted light intensity gradients. The fractured specimen surfaces were analyzed with scanning electron microscopy to discuss the validity of the interpretations of the experimental data.

Original language	English (US)
Pages (from-to)	404-411
Number of pages	8
Journal	Polymer Testing
Volume	27
Issue number	4
DOIs	https://doi.org/10.1016/j.polymertesting.2007.12.007
State	Published - Jun 2008

All Science Journal Classification (ASJC) codes

Polymers and Plastics
Organic Chemistry

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10.1016/j.polymertesting.2007.12.007

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title = "Visualization of crack blunting using secondary fluorescence in soft polymers",

abstract = "A fluorescence-based technique was developed to visualize crack blunting and propagation in soft polymers. The technique, as demonstrated on poly-di-methyl siloxane, can also be applied on intrinsically non-fluorescent polymers after inducing secondary fluorescence with a suitable dye during the specimen preparation. The experimental results indicate enhanced performance of the technique in terms of spatial resolution and contrast compared to white-light microscopy. A dynamic plastic cohesive zone was observed ahead of the blunting crack tips in mode I loading, which was correlated to the computed emitted light intensity gradients. The fractured specimen surfaces were analyzed with scanning electron microscopy to discuss the validity of the interpretations of the experimental data.",

author = "Samuel, {B. A.} and Haque, {M. A.}",

note = "Funding Information: We acknowledge the support from the National Science Foundation of the USA in form of a CAREER (ECS-0545683) Grant. This work was performed in part at the Center for Quantitative Cell Analysis at the Penn State University.",

year = "2008",

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doi = "10.1016/j.polymertesting.2007.12.007",

language = "English (US)",

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journal = "Polymer Testing",

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T1 - Visualization of crack blunting using secondary fluorescence in soft polymers

AU - Samuel, B. A.

AU - Haque, M. A.

N1 - Funding Information: We acknowledge the support from the National Science Foundation of the USA in form of a CAREER (ECS-0545683) Grant. This work was performed in part at the Center for Quantitative Cell Analysis at the Penn State University.

PY - 2008/6

Y1 - 2008/6

N2 - A fluorescence-based technique was developed to visualize crack blunting and propagation in soft polymers. The technique, as demonstrated on poly-di-methyl siloxane, can also be applied on intrinsically non-fluorescent polymers after inducing secondary fluorescence with a suitable dye during the specimen preparation. The experimental results indicate enhanced performance of the technique in terms of spatial resolution and contrast compared to white-light microscopy. A dynamic plastic cohesive zone was observed ahead of the blunting crack tips in mode I loading, which was correlated to the computed emitted light intensity gradients. The fractured specimen surfaces were analyzed with scanning electron microscopy to discuss the validity of the interpretations of the experimental data.

AB - A fluorescence-based technique was developed to visualize crack blunting and propagation in soft polymers. The technique, as demonstrated on poly-di-methyl siloxane, can also be applied on intrinsically non-fluorescent polymers after inducing secondary fluorescence with a suitable dye during the specimen preparation. The experimental results indicate enhanced performance of the technique in terms of spatial resolution and contrast compared to white-light microscopy. A dynamic plastic cohesive zone was observed ahead of the blunting crack tips in mode I loading, which was correlated to the computed emitted light intensity gradients. The fractured specimen surfaces were analyzed with scanning electron microscopy to discuss the validity of the interpretations of the experimental data.

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DO - 10.1016/j.polymertesting.2007.12.007

M3 - Article

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SN - 0142-9418

VL - 27

SP - 404

EP - 411

JO - Polymer Testing

JF - Polymer Testing

IS - 4

ER -

Visualization of crack blunting using secondary fluorescence in soft polymers

Abstract

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