Study on Stress Intensity Factor of PMMA with Double Cracks Using Coherent Gradient Sensing (CGS) Technique

Ling Tao Mao; Cai Ping Liu; Ke Chen; Li Qian An; Xin Xin Zhu

doi:10.4028/www.scientific.net/AMM.109.114

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 109Study on Stress Intensity Factor of PMMA with...

Study on Stress Intensity Factor of PMMA with Double Cracks Using Coherent Gradient Sensing (CGS) Technique

Abstract:

In this paper, the principle of coherent gradient sensing (CGS) technology is briefly introduced. Fracture behaviour of the PMMA specimens with single or double cracks under three-point-bending are studied using the CGS optical method. A series of CGS fringe patterns under different loading are abtained. With these fringes, stress intensity factors are caculated. The influences of the different spacing on stress intensity factors are discussed. These results will be useful for researching on strength of PMMA materials.

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Periodical:

Applied Mechanics and Materials (Volume 109)

Pages:

114-119

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.109.114

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Online since:

October 2011

Authors:

Ling Tao Mao, Cai Ping Liu, Ke Chen, Li Qian An, Xin Xin Zhu

Keywords:

Coherent Gradient sensing, Double Cracks, Photomechanics, PMMA Beam, Stress Intensity Factor (SIF)

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