| dc.description.abstract | Engineering life cycle includes design plan, construction, examination, and maintenance. Examination is crucial because the accuracy of examination is related to the customer confidence in engineering projects. In this research, the estimating model of measurement ability is set up to meet the requirements of construction material labs in Taiwan based on the existing domestic and international standards. The measurement system ability of concrete compression test can be calculated and the ability of lab can be evaluated by using this estimating model. From the evaluation result, the construction material labs will know how to maintain their creditability and avoid decreasing measurement ability due to the uncertainty of operation and environment.
The statistic tools such as linear regression analysis, Analysis of Variance (ANOVA), and hypothesis test are analyzed in this estimating model by using the Minitab statistic software. Most of the researches are focused on the repeatability and reproducibility of measurement system, but few studies are concerning the measurement ability of the constructive testing system. We try to evaluate the measurement system ability of concrete compression test. Since the traditional sample is not uniform, we use the loadcell method instead of traditional sampling and the results are satisfactory.
There are a lot of domestic made measurement instruments to the market recently. The result is just gotten by operating this kind of measurement instrument, and the customer may doubt the accuracy of the measurement instruments. If the different result is gotten by operating another measurement instrument on the same samples, the customers will not only be confused but lose confidence on this instrument. This research also tried to evaluate the measurement accuracy, precision, repeatability, reproducibility and reliability of the intelligent vehicle for pavement which is designed and made by National Central University. The result of this research provides an example to illustrate that the variation of measurement system is able to be evaluated. By the analysis of variation, the causes can be found and the improvement actions of reducing variation can be carried out to increasing the measurement accuracy. This method and the process of evaluating measurement system can be applied to the new measurement instrument purchased. This is an efficiency way to increase the measurement ability of the laboratory. Also it helps to provide more accuracy result to increase the creditability of the laboratory. | en_US |