Long-Term Performance Prediction Framework based on XGBoost Decision Tree for Pultruded FRP Composites exposed to Water, Humidity and Alkaline Solution

2022 ◽  
pp. 115184
Author(s):  
Xing Liu ◽  
TianQiao Liu ◽  
Peng Feng
Keyword(s):  
Decision Tree ◽  
Alkaline Solution ◽  
Performance Prediction ◽  
Frp Composites ◽  
Long Term Performance ◽  
Term Performance

The Use of Laboratory-Measured and Strain-Gauge Backcalculated Asphalt Stiffness for Rutting Performance Prediction

2019 ◽  
Vol 2673 (3) ◽  
pp. 323-333
Author(s):  
Erdem Coleri ◽  
John T. Harvey
Keyword(s):  
Performance Prediction ◽  
Strain Gauge ◽  
Asphalt Concrete ◽  
Laboratory Tests ◽  
Concrete Materials ◽  
Long Term Performance ◽  
Term Performance ◽  
The Impact

Laboratory tests are conducted with asphalt concrete materials to determine the expected in-situ performance. In addition, laboratory test results are commonly used in mechanistic-empirical design methods for material characterization to improve the predictive accuracy of the models. However, the effectiveness of laboratory tests in characterizing the long-term performance of asphalt concrete materials needs to be validated to be able to use the results for pavement design and long-term performance prediction. Inaccurate performance characterization and prediction can directly affect the decision-making process for pavement maintenance, rehabilitation, and reconstruction and result in unexpected early failures in the field. The major objective of this study is to determine the impact of using laboratory-measured asphalt stiffness on the prediction accuracy of mechanistic-empirical models. In addition, the effect of using linear-elastic modeling assumptions (layered elastic theory) and neglecting the nonlinearity of pavement response at high load levels (and/or at high strain levels for weaker structures) on the predicted rutting performance was determined. In this study, the effectiveness of the use of laboratory asphalt stiffness tests for in-situ asphalt stiffness characterization was determined by comparing the rutting performance predicted using laboratory-measured stiffness to rutting predicted using strain-gauge backcalculated stiffness. It was determined that laboratory tests are able to characterize the in-situ stiffness characteristics of the asphalt mix used in this study and the stiffness characterization process suggested in this study can provide reliable rutting performance predictions. Results of this study are only applicable to tested rubberized asphalt concrete mixtures.

Long-Term Performance Prediction of PEMFC Based on LASSO-ESN

2021 ◽  
Vol 70 ◽  
pp. 1-11
Author(s):  
Kai He ◽  
Lei Mao ◽  
Jianbo Yu ◽  
Weiguo Huang ◽  
Qingbo He ◽  
...  
Keyword(s):  
Performance Prediction ◽  
Long Term Performance ◽  
Term Performance

Intercomparison of Long-Term Performance Prediction Methods for a Flat-Plate Domestic Solar Water Heating System

2014 ◽  
Vol 136 (3) ◽  
Author(s):  
Huai S. Xue
Keyword(s):  
Performance Prediction ◽  
Heating System ◽  
Prediction Methods ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Solar Water Heating System ◽  
Long Term Performance ◽  
Term Performance

Long-term performance estimations were performed on a nonstandard domestic solar water heating system by f-Chart, interactive F-Chart software, and φ¯,f-Chart methods. Results of estimations were compared to gain insight of their applicability. Results from F-Chart software and f-Chart agree well and are greater than those from the φ¯,f-Chart method. Energy dumping should be given thorough reconsideration for the refinement of f-Chart and F-Chart software.

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