B-BASIS CALCULATION STATISTICAL ANALYSIS RESULTS OF COMPOSITES MATERIAL TEST USING WEIBULL AND ANOVA DISTRIBUTION METHODS
The mechanical properties of composite materials are subjected to statistical analysis. This study aims to determine the value of B-Basis strength parameters of carbon composite material with UD-0° fiber, UD-90°, fabric-0°, fabric-90° from the results of tensile test and press test. The maximum norm...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/36114 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The mechanical properties of composite materials are subjected to statistical analysis. This study aims to determine the value of B-Basis strength parameters of carbon composite material with UD-0° fiber, UD-90°, fabric-0°, fabric-90° from the results of tensile test and press test. The maximum normed residual test is used for outlier identification and anderson darling k-sample test to determine whether parameters can be processed as one large group of data. The scope of this study focused on evaluating B-Basis values using the 2 methods: Weibull and ANOVA.
The results of data processing using the first methods of Weibull distribution with the regression method that the reliability value at 95% is sufficient or represents 90% of the existing data population. While the secomd method of Weibull distribution with the MLE method obtained B-Basis values for all specimen tests that were sufficient or represented 90% of the population of existing data with a confidence level of 95% (? = 0.05). However, it is different from the ANOVA method that shows a negative B-Basis value on the tensile strength of UD 0° with a non-tabbing treatment of 1.75 MPa although outliers were not detected because the data in UD 0° non tabbing treatment did not look homogeneous.
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