Thermo-mechanical characterization of glass at high temperature using the cylinder compression test. Part I: Viscoelasticity, friction, and PPV

Joshi, Dhananjay; Mosaddegh, Peiman; Musgraves, J. David; Richardson, Kathleen; Joseph, Paul

doi:10.1122/1.4817434

Cited by 19 publications

(33 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since specimens with large ratios of height to diameter exhibit unintuitive bulging effects and undesired buckling effects during compression, 30,31 thin specimens (H 0 = 3.0 mm, D 0 = 13.8 mm), with appreciable friction-sensitive creep behaviors, 14 are herein selected for ease of observation and comparison of the frictional disturbance to viscoelastic deformation. Since specimens with large ratios of height to diameter exhibit unintuitive bulging effects and undesired buckling effects during compression, 30,31 thin specimens (H 0 = 3.0 mm, D 0 = 13.8 mm), with appreciable friction-sensitive creep behaviors, 14 are herein selected for ease of observation and comparison of the frictional disturbance to viscoelastic deformation.…”

Section: Methodsmentioning

confidence: 99%

“…As far as viscoelastic characterization is concerned, there are currently several methods that are based on the creep behavior of glass, such as compression creep test (CCT), [14][15][16][17] bending creep test, 18,19 and indentation creep test. As far as viscoelastic characterization is concerned, there are currently several methods that are based on the creep behavior of glass, such as compression creep test (CCT), [14][15][16][17] bending creep test, 18,19 and indentation creep test.…”

mentioning

confidence: 99%

“…As far as viscoelastic characterization is concerned, there are currently several methods that are based on the creep behavior of glass, such as compression creep test (CCT), [14][15][16][17] bending creep test, 18,19 and indentation creep test. 14,15 Based on CCTs, high-temperature viscous and elastic parameters of many types of glasses, such as As 2 S 3 , BK7, and SK5, were successfully measured. 14,15 Based on CCTs, high-temperature viscous and elastic parameters of many types of glasses, such as As 2 S 3 , BK7, and SK5, were successfully measured.…”

mentioning

confidence: 99%

“…However, to the best knowledge of the authors, the glass-mold frictional disturbances to experimental stress-strain data were mostly neglected or remained largely unaddressed in many conventional compression tests of glass. 14 As a result, the stress-strain relations (constitutive models), exacted from the uncorrected force-displacement data (friction-involved), could be of friction sensitivity, raising uncertainties in further numerical validations concerning the agreement between the simulated and tested compression displacements. 26 This is true for compression tests of glass.…”

mentioning

confidence: 99%

“…12,13,28 Considering the temperature dependence, Sarhadi et al evaluated the glass-mold interface friction through ring compression tests at several temperatures. 14,15 However, no other experimental attempts have been made to slash the interface friction in CCTs of glass, where the quantification of interface friction would be highly instructive to the selection of interface materials with less friction. 29 Using cylinder compression tests, Zhou et al investigated the interface friction between the graphene-coated silicon and glass BK7, and the best matching friction coefficient was determined as 0.20-0.25 at 660-700°C.…”

mentioning

confidence: 99%

See 4 more Smart Citations

A comprehensive study on frictional dependence and predictive accuracy of viscoelastic model for optical glass using compression creep test

Luo

Zhang

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

Compression creep tests (CCTs) have been widely used in phenomenological characterization of viscoelastic materials such as glasses. However, disturbed by specimen‐tool interface friction, the real stress‐strain data regarding the pure viscoelastic deformation are frequently misestimated in conventional CCTs, causing decreased accuracies of the derived viscoelastic parameters. This study proposes a comprehensive CCT‐based approach to develop a viscoelastic model with weakened frictional disturbance and enhanced predictive accuracy. An integrated calculation procedure is first built to mathematically characterize the frictional and viscoelastic behaviors of glass during compression. Uniaxial CCTs of a typical borosilicate glass (L‐BAL42) are then performed at varied frictional conditions. The quantified coefficients of interface friction indicate that a minor frictional disturbance is achieved when Nickel foils are used as interfacial layers, whereby a more realistic viscoelastic constitutive relation of the glass is derived. The obtained frictional and viscoelastic constants are further incorporated into computational modeling of the CCT and precision molding processes. The demonstrated consistencies between the simulated and measured results (creep displacement and molding force) suggest that, by technically slashing the interface friction and theoretically correcting the friction‐involved stress in CCTs, the frictional disturbance to experimental stress‐strain data can be effectively weakened, and a viscoelastic model of enhanced predictive accuracy can be thus developed.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

“…As far as viscoelastic characterization is concerned, there are currently several methods that are based on the creep behavior of glass, such as compression creep test (CCT), [14][15][16][17] bending creep test, 18,19 and indentation creep test. 14,15 Based on CCTs, high-temperature viscous and elastic parameters of many types of glasses, such as As 2 S 3 , BK7, and SK5, were successfully measured. 14,15 Based on CCTs, high-temperature viscous and elastic parameters of many types of glasses, such as As 2 S 3 , BK7, and SK5, were successfully measured.…”

mentioning

confidence: 99%

mentioning

confidence: 99%