scholarly journals Intercomparison of Thermal and Optical Measurement Methods for Elemental Carbon and Black Carbon at an Urban Location

2006 ◽  
Vol 40 (20) ◽  
pp. 6377-6383 ◽  
Author(s):  
R. Hitzenberger ◽  
A. Petzold ◽  
H. Bauer ◽  
P. Ctyroky ◽  
P. Pouresmaeil ◽  
...  
Keyword(s):  
Black Carbon ◽  
Elemental Carbon ◽  
Optical Measurement ◽  
Measurement Methods ◽  
Urban Location

Methods of temperature measurement in microwave heating technologies

2021 ◽  
pp. 20-28
Author(s):  
Boris A. Lapshinov
Keyword(s):  
Temperature Measurement ◽  
Microwave Heating ◽  
Microwave Radiation ◽  
Electromagnetic Fields ◽  
Optical Measurement ◽  
Measurement Methods ◽  
Heating Systems ◽  
Measurement Systems ◽  
Processed Material ◽  
Spectral Pyrometry

In industrial technological processes associated with the heating of the processed material by microwave radiation, it is necessary to measure the temperatures of objects. Methods for measuring temperatures in the fields of technology using microwave heating systems are considered. The main possibilities, disadvantages and limitations of the used contact and non-contact (optical) measurement methods are determined. The requirements for temperature measurement systems under conditions of exposure to strong electromagnetic fields are listed. The possibilities of the spectral pyrometry method are especially noted.

Optical measurement methods of Dragon-I accelerator

2007 ◽  
Author(s):  
Guojun Yang ◽  
Zhuo Zhang ◽  
Sifu Chen
Keyword(s):  
Optical Measurement ◽  
Measurement Methods

scholarly journals An uncertainty-based protocol for the setup and measurement of soot/black carbon emissions from gas flares using sky-LOSA

2020 ◽  
Author(s):  
Bradley M. Conrad ◽  
Matthew R. Johnson
Keyword(s):  
Open Source ◽  
Black Carbon ◽  
Open Source Software ◽  
Carbon Emissions ◽  
Climate Models ◽  
Optical Measurement ◽  
Measurement Data ◽  
Software Tool ◽  
Measurement Protocol ◽  
Measurement Uncertainties

Abstract. Gas flaring is an important source of atmospheric soot/black carbon, especially in sensitive Arctic regions. However, emissions have traditionally been challenging to measure and remain poorly characterized, confounding international reporting requirements and adding uncertainty to climate models. The sky-LOSA optical measurement technique has emerged as a powerful means to quantify flare black carbon emissions in the field, but broader adoption has been hampered by the complexity of its deployment, where decisions during setup in the field can have profound, non-linear impacts on achievable measurement uncertainties. To address this challenge, this paper presents a prescriptive measurement protocol and associated open-source software tool that simplifies acquisition of sky-LOSA data in the field. Leveraging a comprehensive Monte Carlo-based General Uncertainty Analysis (GUA) to predict measurement uncertainties over the entire breadth of possible measurement conditions, general heuristics are identified to guide a sky-LOSA user toward optimal data collection. These are further extended in the open-source software utility, SetupSkyLOSA, which interprets the GUA results to provide detailed guidance for any specific combination of location, date/time, and flare, plume, and ambient conditions. Finally, a case study of a sky-LOSA measurement at an oil and gas facility in Mexico is used to demonstrate the utility of the software tool, where potentially small region(s) of optimal instrument setup are easily and quickly identified. It is hoped that this work will help increase the accessibility of the sky-LOSA technique and ultimately the availability of field measurement data for flare black carbon emissions.

Miniaturized Optical Measurement Methods for Surface Nanometrology

CIRP Annals ◽  
2006 ◽  
Vol 55 (1) ◽  
pp. 577-580 ◽  
Author(s):  
X. Jiang ◽  
D. Whitehouse
Keyword(s):  
Optical Measurement ◽  
Measurement Methods

An Optical-Triangulation-Based Method for Measurement of Blade Sections

2015 ◽  
Vol 713-715 ◽  
pp. 395-401
Author(s):  
Yong Zhu ◽  
Jing Liang Liu ◽  
Cheng Wei Li ◽  
Zheng Ya Kang
Keyword(s):  
High Efficiency ◽  
Optical Measurement ◽  
Measurement Methods ◽  
Free Form ◽  
Probe Radius ◽  
Optical Triangulation ◽  
Measurement Results ◽  
Probe Radius Compensation ◽  
Free Form Surface ◽  
Radius Compensation

Blades are an important part of aviation engine, its manufacturing compliance seriously affect the performance of the engine. Blades tend to be free-form surface modeling, which makes it extremely difficult to measurement. Since no probe radius compensation, high efficiency, non-contact optical measurement methods get more and more attention, but the inspection uncertainty of optical measurement is usually between 30um to 50um .To reduces the optical non-contact measurement uncertainty, this paper presents an Optical-triangulation-based method for measurement of blade sections. There is a data optimization process in the method, and this feature makes the proposed method can obtain better measurement results. At last, some experiments demonstrate the effectiveness of this method.

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