A novel use of multivariate statistics to diagnose test-to-test variation in complex measurement systems

Burke, Richard; Burke, Keeley; Chappell, Edward; Gee, Mike; Williams, Rod

doi:10.1016/j.measurement.2018.07.059

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…performance curves). Thanks to engine and vehicle tests, the measured values such as economy, power, moment, emission are compared with performance curves [7][8][9]. The unbalanced distribution of fossil fuels, which make up the largest part of primary energy resources, has caused some disadvantageous countries to become dependent on advantageous countries.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effects of camelina sativa biodiesel and eurodiesel blends on vehicle performance and emissions

Yildiz

Özçelik

2021

International Journal of Automotive Engineering and Technologies

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Studies have been conducted on improving engine performance, reducing environmental pollution caused by vehicles, and using alternative fuels. In the study, tests are carried out in a laboratory environment to check whether the engine has reached the intended use. Testing of internal combustion engines is crucial to research and teaching, trade and environmental pollution. Depending on the purpose of the test, the type and duration of vehicle tests will vary. Automobile manufacturing companies and research units will conduct a series of scientific and long-term tests in the vehicle development process. Thanks to engine and vehicle tests under different operating conditions, the measured values such as economy, power, moment, emission are compared with performance curves. In this study, biodiesel was obtained from crude camelina sativa oil using the transesterification method. Camelina sativa biodiesel was mixed with Eurodiesel at the rate of 7% (B7), 20% (B20) and 50% (B50). Vehicle performance measurements of biodiesel-Eurodiesel blends were made on a vehicle with fourstroke, four-cylinder, Common-rail fuel system, turbocharged and water-cooled engine using a chassis dynamometer. Vehicle performance and exhaust emissions were measured at different speeds during the vehicle chassis dynamometer test. While the highest moment value was obtained at 80 km/h in B7 fuel, the maximum engine power was obtained in B7 fuel at 160 km/h. Average engine power and maximum engine torque of B100 fuel decreased by 3,28% and 10,21% compared to Eurodiesel fuel. As the rate of biodiesel increased, specific fuel consumption increased. The highest specific fuel consumption was obtained with 91,6 g/kWh in B100 fuel at 160 km/h. The average specific fuel consumption of B100 fuel increased 38,5% compared to Eurodiesel fuel. When we look at the results of exhaust emission measurements, it is seen that camelina sativa biodiesel and fuel mixture decreased CO, CO2 and HC values compared to Eurodiesel fuel, but increased NOx values.

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Section: Introductionmentioning

confidence: 99%

Investigation of the effects of camelina sativa biodiesel and eurodiesel blends on vehicle performance and emissions

Yildiz

Özçelik

2021

International Journal of Automotive Engineering and Technologies

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“…We began to realize that our solution must be reliable, while not generating high costs for the measurement itself. The inspiration for achieving such a result was the study by [43], where, based on large datasets, the authors successfully analyzed them without reducing the volume unnecessarily. Thus, they achieved satisfactory results, similar to those obtained in [44], for the case of turbine shaft torque.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Testing of the Miter Gates Using Various Measurement Methods

Binczyk

Kalitowski

Szulwic

et al. 2020

Sensors

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When any problems related to civil engineering structures appear, identifying the issue through the usage of only one measuring method is difficult. Therefore, comprehensive tests are required to identify the main source. The strains and displacement measurements, as well as modal identification, are widely used in the nondestructive testing of structures. However, measurements are usually carried out at several points and confirm or exclude only one of many potential causes of the problem. The main aim of this paper is to identify the causes of miter gates’ excessive vibration. The research includes displacement measurements using a tachometer and a laser scanner, acceleration measurements connected with modal analysis, and calculations with the finite element method (FEM) model. The numerical model underwent verification regarding test results. Particular attention was paid to evaluate the practical use of a laser scanner for diagnosing miter gates. Unlike classical methods, it measures many points. The analysis eliminated a number of potential causes of excessive vibration and highlighted the field of excessive deformation. The identified anomaly could be associated with bearings’ misalignment after closing the door. This construction part should be subjected to further research using classical methods. The laser scanning has been proven to be a method that can only generally present the deformation of the structure.

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“…Changing the decision maker's assumptions can also significantly impact the nature of scenarios and decision outcomes hence methods employed by decision-makers should allow for sensitivity analysis to be incorporated. Moreover, CO 2 emission problems typically rely on non-linear models which involve highly correlated data, where detecting the specific variables which cause variations in results can be challenging to differentiate (Burke et al, 2018). One way to overcome the complexity of correlated data is to break down the problem into smaller sub-problems to sequentially solve (Qiao et al, 2017).…”

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confidence: 99%

“…Additionally, the other decision criteria considered in Section 3.4, included design configuration, fuel consumption and electricity consumption, product speed, voltage, external humidity and temperature during testing (Burke et al, 2018) plus the type of fuel used, fuel price and CO 2 reduction targets (Lee & Hashim, 2014). The possible explanation for the wide range of different criteria utilised in the literature, in comparison to the criteria adopted in the proposed decision support model, is likely due to the usage of the different terminology used across the industry to express the same criteria.…”

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confidence: 99%

Multi-objective decision-making methods for optimising CO2 decisions in the automotive industry

Ibrahim

Cox

Mills

et al. 2021

Journal of Cleaner Production

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A novel use of multivariate statistics to diagnose test-to-test variation in complex measurement systems

Cited by 5 publications

References 24 publications

Investigation of the effects of camelina sativa biodiesel and eurodiesel blends on vehicle performance and emissions

Investigation of the effects of camelina sativa biodiesel and eurodiesel blends on vehicle performance and emissions

Nondestructive Testing of the Miter Gates Using Various Measurement Methods

Multi-objective decision-making methods for optimising CO2 decisions in the automotive industry

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