Microstructural failure modes in three-phase glass syntactic foams

Koopman, M.; Chawla, K. K.; Carlisle, K.; Gladysz, Gary M.

doi:10.1007/s10853-006-7601-9

Cited by 49 publications

(21 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Experimental studies on compressive response of glass-vinyl ester and epoxy syntactic foams show that failure is largely due to particle crushing (Gupta et al, 2010;Kim and Plubrai, 2004) whereas the particle-matrix interface plays an important role in determining the failure mechanisms under tensile and flexural conditions (Gupta et al, 2010;Tagliavia et al, 2010a;Wouterson et al, 2005). Scanning electron micrographs of tensile fracture surfaces show interfacial failure and curvilinear deformation marks in the matrix (see for example Kishore et al, 2005;Koopman et al, 2006). Similar features are also found in solid particle filled composites (see for example Lee and Yee, 2001;Pawlak and Galeski, 2002).…”

Section: Introductionmentioning

confidence: 76%

Elastic interaction of interfacial spherical-cap cracks in hollow particle filled composites

Tagliavia

Porfiri

Gupta

2011

International Journal of Solids and Structures

View full text Add to dashboard Cite

a b s t r a c tThis work analyzes the elastic interaction between two spherical-cap cracks present along the outer surface of a hollow particle embedded in a dissimilar medium under remote uniaxial tensile loading. A semi-analytical approach based on an enriched Galerkin method is adopted to determine stress and deformation fields as functions of particle wall thickness and cracks' configuration. The present analysis is limited to multiple interfacial spherical-cap cracks; that is, crack propagation is restrained to the particle-matrix interface and possibility of crack kinking in the matrix is not considered. Interfacial crack growth characteristics, conditions for stable crack propagation, equal crack growth, and shielding are established through energy release rate analysis. The study is relevant to the analysis of tensile and flexural failure of syntactic foams used in marine and aerospace applications. Results specialized to glass-vinyl ester syntactic foams demonstrate that particle wall thickness can be used to control crack stability and growth characteristics as well as tailoring the magnitude of the shielding phenomenon.Predictions are compared to finite element findings for validation and to results for penny-shaped cracks to elucidate the role of crack curvature.

show abstract

Section: Introductionmentioning

confidence: 76%

Elastic interaction of interfacial spherical-cap cracks in hollow particle filled composites

Tagliavia

Porfiri

Gupta

2011

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…Therefore, these foams were considered good materials for thermal and sound insulation, among others. Other researchers studied failure modes in syntactic foams by experimental methods [12][13][14], but there has not been found any report on both theoretical and experimental studies yet.…”

Section: Introductionmentioning

confidence: 99%

Limit load and failure mechanisms of soda lime glass foam

et al. 2018

View full text Add to dashboard Cite

Foamed glass is widely used in the industry as an insulating material. However, its mechanical properties are not well-investigated yet. Foamed glass is produced from glass waste that causes discrepancy in mechanical properties of the final product. This paper shows a way to increase the limit of the load capacity of foamed glass, which is very fragile and sensitive to mechanical and thermal loading conditions. In this paper, three different methods of load application on cellular glass structure (rough contact, resin and flour interfaces) and their influence on failure mechanisms were investigated in detail. The results of numerical analyses, based on finite elements method and compression strength tests using the digital image correlation method, indicate that the overall strength of the material is limited by boundary effects. A careful adjustment of the interface property is the main factor to draw useful conclusions and to extend load limits of cellular glass in engineering applications.

show abstract

“…During their manufacturing process, soda-lime-borosilicate glass is subjected to a milling operation. Subsequently, the temperature of the produced glass micro-particles is increased until compounds within the glass consisting of SO 2 and O 2 at a 2:1 ratio evolve to their gaseous form, blowing the particles to their hollow configuration [1]. These gases will be trapped within the HGMs at an absolute pressure of approximately 1/3 atmosphere [1].…”

Section: Introductionmentioning

confidence: 99%

“…Upon failure due to the exceeding contact forces, the entrapped residual gases within the HGMs will be released, compromising the vacuum environment and hence their thermal insulation efficiency. HGMs, as fillers in syntactic foams, provide an improved strength under compression and reduced density [2,3]. The mechanical properties of syntactic foams strongly depend on the filler content, i.e.…”

Section: Introductionmentioning

confidence: 99%

On a hybrid method to characterize the mechanical behavior of thin hollow glass microspheres

Garza-Cruz

Nakagawa

2012

Granular Matter

View full text Add to dashboard Cite

Hollow glass microspheres possess niche markets and future research areas due to their high strength-todensity ratio and low thermal conductivity. For example, these qualities make them a viable alternative insulation medium. For this study, Scotchlite™ k1 hollow glass microspheres (HGMs) manufactured by 3M™ were used; however, one of the challenges in investigating their mechanical properties was due to the limited availability of published data. Most importantly, the thickness (or the range of thicknesses) of produced thin hollow microspheres is not measured by the manufacturer, so the authors needed to develop a hybrid characterization method that depended on both experiments and simulations to estimate the HGMs mechanical properties. The experimental method utilizes a nano-indenter with a spherical sapphire tip of 500 µm in diameter. Each HGM was uniaxialy compressed under the indenter to yield the stiffness, diameter, and the force-displacement at fracture of each HGM tested. ABAQUS™ was used to numerically model an HGM of mean diameter and stiffness to obtain a relation between the mechanical and geometrical properties of each HGM to its thickness, and investigate the development of stresses on an HGM during its uniaxial compression. The data show large scatter in the measured stiffness of each HGM as a function of diameter. The authors conjecture this is due to a large fluctuation of the microsphere thickness. Finally, the work necessary to deform an HGM was successfully correlated to its radius-to-thickness ratio. This gives us a unique insight on the force-displacement behavior against the geometrical features of HGMs.

show abstract

Microstructural failure modes in three-phase glass syntactic foams

Cited by 49 publications

References 8 publications

Elastic interaction of interfacial spherical-cap cracks in hollow particle filled composites

Elastic interaction of interfacial spherical-cap cracks in hollow particle filled composites

Limit load and failure mechanisms of soda lime glass foam

On a hybrid method to characterize the mechanical behavior of thin hollow glass microspheres

Contact Info

Product

Resources

About