Experimental and simulation studies on fatigue behavior of laminated glass having polyvinyl butyral and ethyl vinyl acetate interlayers

2018 ◽  
Vol 41 (6) ◽  
pp. 1437-1446 ◽  
Author(s):  
A. Vedrtnam ◽  
S.J. Pawar
Keyword(s):  
Vinyl Acetate ◽  
Fatigue Behavior ◽  
Polyvinyl Butyral ◽  
Laminated Glass ◽  
Simulation Studies ◽  
Ethyl Vinyl

Experimental and simulation studies on flexural strength of laminated glass using ring-on-ring and three-point bending test

2017 ◽  
Vol 232 (21) ◽  
pp. 3930-3941 ◽  
Author(s):  
Ajitanshu Vedrtnam ◽  
SJ Pawar
Keyword(s):  
Flexural Strength ◽  
Layer Thickness ◽  
Vinyl Acetate ◽  
Load Capacity ◽  
Polyvinyl Butyral ◽  
Bending Test ◽  
Laminated Glass ◽  
Element Analysis ◽  
Ethyl Vinyl ◽  
Three Point Bending

Flexural strength of laminated glass is noteworthy in architectural, glazing, automotive safety, photo-voltaic, and decorative applications. The flexural strength of laminated glass samples having polyvinyl butyral/ethyl vinyl acetate interlayer of different critical thickness (0.38/0.76/1.52 mm) was determined by ring-on-ring test following the ASTM C1499-15 and also by three-point bending test (for an interlayer of 0.38 mm thickness) following the ASTM D790-03. The effect of inter-layer type and inter-layer thickness on flexural strength is evidently reported from this brief study. The significance F-statics value during regression analysis shows the strong association of flexural strength with inter-layer types and inter-layer thickness, and P-value shows that the error in the analysis is within considerable limits. It is also concluded that the laminated glass samples with polyvinyl butyral interlayer have comparatively lower load capacity than laminated glass samples with ethyl vinyl acetate interlayer for same interlayer and glass thickness. The inter-layer thickness has more prominent role in the determination of load capacity in case of ethyl vinyl acetate laminated glass samples. There is an increment in average load capacity with an increment in critical inter-layer thickness in laminated glass. A finite element analysis is also carried out for simulating the experimentation and obtaining the variation of displacements in the laminated glass samples at their load capacity. The output of the finite element analysis fairly describes the fracture pattern (based on deformation and stress) of the laminated glass samples. The conclusions may be utilized for the selection of suitable laminated glass and predicting failure of laminated glass while used in various structural, automotive and other applications.

scholarly journals Experimental and Numerical Study of Viscoelastic Properties of Polymeric Interlayers Used for Laminated Glass: Determination of Material Parameters

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2241 ◽  
Author(s):  
Tomáš Hána ◽  
Tomáš Janda ◽  
Jaroslav Schmidt ◽  
Alena Zemanová ◽  
Michal Šejnoha ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Shear Stiffness ◽  
Ethylene Vinyl Acetate ◽  
Material Model ◽  
Polyvinyl Butyral ◽  
Experimental Program ◽  
Model Parameters ◽  
Laminated Glass ◽  
Material Parameters ◽  
Lap Shear

An accurate material representation of polymeric interlayers in laminated glass panes has proved fundamental for a reliable prediction of their response in both static and dynamic loading regimes. This issue is addressed in the present contribution by examining the time–temperature sensitivity of the shear stiffness of two widely used interlayers made of polyvinyl butyral (TROSIFOL BG R20) and ethylene-vinyl acetate (EVALAM 80-120). To that end, an experimental program has been executed to compare the applicability of two experimental techniques, (i) dynamic torsional tests and (ii) dynamic single-lap shear tests, in providing data needed in a subsequent calibration of a suitable material model. Herein, attention is limited to the identification of material parameters of the generalized Maxwell chain model through the combination of linear regression and the Nelder–Mead method. The choice of the viscoelastic material model has also been supported experimentally. The resulting model parameters confirmed a strong material variability of both interlayers with temperature and time. While higher initial shear stiffness was observed for the polyvinyl butyral interlayer in general, the ethylene-vinyl acetate interlayer exhibited a less pronounced decay of stiffness over time and a stiffer response in long-term loading.

On-line preconcentration of zinc on ethyl vinyl acetate prior to its determination by CVG-ICP-OES

2013 ◽  
Vol 106 ◽  
pp. 34-40 ◽  
Author(s):  
L.A. Escudero ◽  
S. Cerutti ◽  
L.D. Martinez ◽  
J.A. Salonia ◽  
J.A. Gasquez
Keyword(s):  
Vinyl Acetate ◽  
Icp Oes ◽  
Ethyl Vinyl ◽  
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