Mechanical Characterization and Modeling of Isocyanate-Crosslinked Nanostructured Silica Aerogels

Roy, Samit; Shimpi, Nilesh; Katti, Atul; Lu, Hongbing; Rahman, Mosfequr

doi:10.2514/6.2006-1770

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Cited by 5 publications

(2 citation statements)

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“…Roy et al [12] characterized the mechanical behavior of an isocyanatecrosslinked silica aerogel by compression, three-point bending and Dynamic Mechanical Analysis (DMA) tests at room temperature. In addition, Distinct-Element Analysis (DEA) simulation was also performed to understand the relationship between the structure and properties of aerogel.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation and modeling of the creep behavior of ceramic fiber-reinforced SiO2 aerogel

Yang

Sun

Shi

2012

Journal of Non-Crystalline Solids

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Section: Introductionmentioning

confidence: 99%

“…Thus, lots of efforts are [9][10][11][12] made to produce high strength aerogel. Feng et al [13] produced a kind of high strength aerogel with ceramic fiber as the reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and modeling of the creep behavior of ceramic fiber-reinforced SiO2 aerogel

Yang

Sun

Shi

2012

Journal of Non-Crystalline Solids

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Modeling of Stiffness, Strength, and Structure–Property Relationship in Crosslinked Silica Aerogel

Roy

Hossain

Multiscale Modeling and Simulation of Composite Materials and Structures

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Design of Iosipescu Shear Test for Applying to a Bi-Modulus Ceramic-Fiber-Reinforced SiO2 Aerogel

Sun

Shi

2014

Journal of Testing and Evaluation

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Tension and compression tests were conducted on a ceramic-fiber-reinforced SiO2 aerogel (CFRSA). The material exhibits different tension and compression modulus, i.e., bi-modulus. The objective of present research is to establish guidelines for preparing shear tests of this CFRSA. Finite-element analysis (FEA) on various Iosipescu specimens is presented for four bi-modulus materials, including the CFRSA. It is found that the major concerns for specimen design of bi-modulus materials are: the uniformity of shear stress and the longitudinal normal stress concentration at notch tips. These concerns are all dependent on material properties. For material with Et numerically close to Ec, the normal stress concentration near notch tips is of less significance. However, for material with high tension–compression asymmetry, including this CFRSA, the normal stress concentration near notch tips is significant. The round-notch specimen with small normal stress concentration seems to be favorable for these materials.

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Mechanical Characterization and Modeling of Isocyanate-Crosslinked Nanostructured Silica Aerogels

Cited by 5 publications

References 9 publications

Experimental investigation and modeling of the creep behavior of ceramic fiber-reinforced SiO2 aerogel

Experimental investigation and modeling of the creep behavior of ceramic fiber-reinforced SiO2 aerogel

Modeling of Stiffness, Strength, and Structure–Property Relationship in Crosslinked Silica Aerogel

Design of Iosipescu Shear Test for Applying to a Bi-Modulus Ceramic-Fiber-Reinforced SiO2 Aerogel

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