Use of Resampling Method to Construct Variance Index and Repeatability Limit of Damage Characteristic Curve
| Autor: | Cassie Castorena, Kangjin 'Caleb' Lee, B. Shane Underwood, Jing Ding, Youngsoo Richard Kim |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
050210 logistics & transportation
Index (economics) business.industry Mechanical Engineering 05 social sciences 0211 other engineering and technologies 02 engineering and technology Repeatability Variance (accounting) Viscoelasticity Asphalt concrete Component (UML) Resampling 021105 building & construction 0502 economics and business Applied mathematics Limit (mathematics) business Civil and Structural Engineering Mathematics |
| Zdroj: | Transportation Research Record: Journal of the Transportation Research Board. 2675:194-207 |
| ISSN: | 2169-4052 0361-1981 |
| DOI: | 10.1177/0361198121994850 |
| Popis: | The simplified viscoelastic continuum damage model has been widely accepted as a tool to predict fatigue performance of asphalt concrete. One key component in the model is the damage characteristic curve that results from a cyclic fatigue test. This curve characterizes the relationship between material integrity (stiffness) and the level of damage in the material. As with any experimental measurement, it is important to know and quantify the variability of the damage curve, but traditional statistical methods are ill-suited for experiments that yield functional data as opposed to univariate data. In this study, a variance index of the damage characteristic curve is first proposed and compared with the expert judgment of the variance of a set of nine different asphalt mixtures. Then, an example analysis for establishing the repeatability limit of a specific mixture as the application of the variance index is presented using the resampling method and hypothesis test. The major findings are as follows: 1) the proposed variance index can match the expert judgment of variability; 2) the shape of the damage characteristic curve can affect the performance of the variance index; 3) the resampling method and hypothesis test can be applied to flag inconsistent data in multi-user or multi-laboratory results; and 4) the resampling method can also be used to construct the repeatability limit of the variance index. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|