Probabilistic analysis of a SiC/SiC ceramic matrix composite turbine vane

Murthy, Pappu L. N.; Nemeth, Noel N.; Brewer, David N.; Mital, Subodh K.

doi:10.1016/j.compositesb.2007.05.006

Cited by 98 publications

(28 citation statements)

References 4 publications

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“…For this purpose, the two-parameter Weibull distribution function was utilized. The function provides the probability, p, for a given parameter, x, as [19,20,22] …”

Section: Methodsmentioning

confidence: 99%

“…The magnitude of ''m'' increases with decreasing scatter. The survival probability of the ith observation in the data arranged in ascending order can be expressed as [19,20,22] …”

Section: Methodsmentioning

confidence: 99%

“…To treat this scatter, Weibull statistical analysis has been utilized and the corresponding characteristic values in each case were evaluated to obtain suitable results for structural designing. As a matter of fact, this particular statistical method has been widely utilized to calculate the characteristics values for various mechanical properties of heterogeneous materials; for example to calculate the Young's modulus of the SiC/SiC ceramic matrix composite for turbine vanes [19], the microhardness and Young's modulus of thermal barrier coatings on Ti-alloys [20][21][22], etc. Thus, the Weibull statistical analysis is a well established, simple and widely used technique to calculate the characteristic properties of such brittle materials with various phases, flaws or defects that results in wide variations in the mechanical properties like hardness and Young's modulus.…”

Section: Introductionmentioning

confidence: 99%

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Nanoindentation study of microplasma sprayed hydroxyapatite coating

Dey

Mukhopadhyay

Gangadhaŕan

et al. 2009

Ceramics International

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“…For this purpose, the two-parameter Weibull distribution function was utilized. The function provides the probability, p, for a given parameter, x, as [19,20,22] …”

Section: Methodsmentioning

confidence: 99%

“…The magnitude of ''m'' increases with decreasing scatter. The survival probability of the ith observation in the data arranged in ascending order can be expressed as [19,20,22] …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanoindentation study of microplasma sprayed hydroxyapatite coating

Dey

Mukhopadhyay

Gangadhaŕan

et al. 2009

Ceramics International

View full text Add to dashboard Cite

“…This theory is based on an exponential law of a decreasing defect size distribution. And the two-parameter Weibull distribution function is described as: p = 1 À exp[À(x/x 0 ) m ], where x 0 is known as the scale parameter where the probability of occurrence is 63.2% and m is the Weibull modulus (Ref [16][17][18]. The magnitude of m increases with decreasing scatter.…”

Section: Nano-hardnessmentioning

confidence: 99%

Effect of Thermal Exposure on Mechanical Properties of a Plasma-Sprayed Nanostructured Thermal Barrier Coating

et al. 2011

J Therm Spray Tech

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A nanostructured thermal barrier coating (TBC) was deposited by air plasma spraying. The effect of microstructural evolution on nano-hardness and YoungÕs modulus has been investigated by nanoindentation technique after exposure at 1200°C in air for different times. The results showed that the sintering process of nanostructured TBC at 1200°C was divided into two stages. TBC completely kept the nanostructure with the grain size <100 nm at the first stage of 10 h thermal exposure. The nanostructure was lost gradually at the second stage from 10 to 200 h thermal exposure. During the first stage, nano-hardness and YoungÕs modulus increased rapidly for TBC densification, and Weibull bimodal distribution of both YoungÕs modulus and nano-hardness disappeared as grain grew and most microcracks were healed. The structure of TBC did not change basically, and nano-hardness and YoungÕs modulus increased slightly at the second stage.

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“…As compared with SiC, SiC/SiC CMCs offer many advantages, such as low density, high strength, and non-brittle behavior. It is also possible to create special complex shapes using these materials [8]. However, similar to SiC, SiC/SiC CMCs have been reported to be easily oxidized, forming a protective silica scale that has been observed on the surface of SiC [9][10][11][12].…”

Section: Introductionmentioning

confidence: 98%