NDLI: Full-Field Displacement and Strain Measurements for Debonding Test of SMPM Laminates Using ESPI

Content Provider	IEEE Xplore Digital Library
Author	Guo Tong Song Yongsheng
Copyright Year	2010
Abstract	This paper presents the full-field displacement and strain measurements in the debonding tests of steel stranded wire mesh and polymer mortar (SMPM) laminates bonded to concrete, in which the electronic speckle pattern interferometry (ESPI) with four-phase shifting technique is used. The in-plane displacements of SMPM laminates are obtained by measuring the changes in phase patterns due to deformation. Derivation of displacements resulted in strains. The propagation of interference fringes and the characteristic of strain distributions are recorded and analyzed. It is concluded that the ESPI, being a whole-field non-contacting optical method, is suitable for the study of debonding mechanism of composites. However, the rigid body motions of test specimens should be strictly restrained. The strain distribution on the surface of SMPM laminates is different from that of the well-used fiber reinforced polymer (FRP) laminates, and the position of transversal stranded wires has a significant influence on the strain distribution and the debonding load. Results of this study can be used for developing the interfacial bond-slip relationship of SMPM laminates bonded to concrete.
Starting Page	572
Ending Page	575
File Size	1246945
Page Count	4
File Format	PDF
ISBN	9781424486830
DOI	10.1109/ICOIP.2010.293
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical interferometry Debonding Speckle Phase shifting Concrete Laminates Laser beams Wire Electronic speckle pattern interferometry Non destructive testing Strain
Content Type	Text
Resource Type	Article

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