scholarly journals A Defect Detection Method for the Surface of Metal Materials Based on an Adaptive Ultrasound Pulse Excitation Device and Infrared Thermal Imaging Technology

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yibo Ai ◽  
Yingjie Zhang ◽  
Xingzhao Cao ◽  
Weidong Zhang
Keyword(s):  
Thermal Imaging ◽  
Crack Detection ◽  
Control Method ◽  
Three Dimensional ◽  
Resonance State ◽  
Ultrasonic Pulse ◽  
Operating Conditions ◽  
Pulse Excitation ◽  
Infrared Thermal Imaging ◽  
Imaging Technology

Ultrasonic excitation has been widely used in the detection of microcracks on metal surfaces, but there are problems such as poor excitation effect of ultrasonic pulse, long time to reach the best excitation, and difficult to find microcracks. In this paper, an adaptive ultrasonic pulse excitation device and infrared thermal imaging technology have been combined, as well as their control method, to solve the problem. The adaptive ultrasonic pulse excitation device adds intelligent modules to realize automatic adjustment of detection parameters, which can quickly obtain reliable excitation; the multidegree-of-freedom base realizes the three-dimensional direction change of the ultrasonic gun to adapt to different excitation occasions. When the appropriate ultrasonic excitation makes microcracks in the resonance state, the microcracks can be frictionated, which produce heat rise with the temperature. Then, the microcrack defect can be detected by the infrared thermal instrument through the different surface temperatures with imaging recognition method. Our detection experiments of the titanium alloy plates and the aluminum alloy profiles of marine engineering show that the method can get reliable detection parameters in a short time and measure the crack length effectively. It can be used in many aspects such as crack detection in mechanical structures or complex equipment operating conditions and industrial production processes.

scholarly journals An application of pulsed infrared thermal imaging in the diagnosis of diabetic microangiopathy

2019 ◽  
Vol 23 (3 Part A) ◽  
pp. 1473-1478
Author(s):  
Yanying Yin ◽  
Chen Li ◽  
Ge Song
Keyword(s):  
Lower Extremity ◽  
Atherosclerotic Plaque ◽  
Thermal Imaging ◽  
Thermal Conduction ◽  
Clinical Symptoms ◽  
Diabetic Microangiopathy ◽  
Conduction Model ◽  
Infrared Thermal Imaging ◽  
Imaging Technology ◽  
Working Principle

Diabetic microangiopathy is an important cause of morbidity and mortality of diabetes foot ulcers. Its early detection is very important for early intervention avoiding severe clinical symptoms. In this article, theoretical study on a pulsed infrared thermal imaging technology detecting early diabetic microangiopathy in lower extremity was carried out. The working principle of pulsed infrared thermal imaging technology was described and the 3-D thermal conduction model for atherosclerotic plaque in microvessel of distal lower extremity using pulsed infrared thermal imaging technology was established and calculated. The effect of atherosclerotic plaque geometry size including length and thickness to the measurement parameter was studied, and the influence law has been got, which can provide a theoretical basis for the diagnosis of diabetic microangiopathy using pulsed infrared thermal imaging technology.

Investigation of position and size for lymphedema with Infrared thermal imaging technology

2021 ◽  
Author(s):  
Yi Feng Liu ◽  
Hsi-Chao Chen ◽  
Ying-Sheng Lin ◽  
Bo-Wei Lai ◽  
Min-Yi Jiang ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Infrared Thermal Imaging ◽  
Imaging Technology

scholarly journals Infrared Thermal Imaging-Based Crack Detection Using Deep Learning

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 182060-182077 ◽  
Author(s):  
Jun Yang ◽  
Wei Wang ◽  
Guang Lin ◽  
Qing Li ◽  
Yeqing Sun ◽  
...  
Keyword(s):  
Deep Learning ◽  
Thermal Imaging ◽  
Crack Detection ◽  
Infrared Thermal Imaging

scholarly journals Clinical Trial on the Characteristics of Zheng Classification of Pulmonary Diseases Based on Infrared Thermal Imaging Technology

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Jin-xia Ni ◽  
Si-hua Gao ◽  
Yu-hang Li ◽  
Shi-lei Ma ◽  
Tian Tian ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Pulmonary Disease ◽  
Thermal Imaging ◽  
Relative Temperature ◽  
Infrared Thermal Imaging ◽  
Imaging Technology ◽  
Thermal Images ◽  
Diagnosis Rate ◽  
Infrared Thermal Images

Zheng classification study based on infrared thermal imaging technology has not been reported before. To detect the relative temperature of viscera and bowels of different syndromes patients with pulmonary disease and to summarize the characteristics of different Zheng classifications, the infrared thermal imaging technology was used in the clinical trial. The results showed that the infrared thermal images characteristics of different Zheng classifications of pulmonary disease were distinctly different. The influence on viscera and bowels was deeper in phlegm-heat obstructing lung syndrome group than in cold-phlegm obstructing lung syndrome group. It is helpful to diagnose Zheng classification and to improve the diagnosis rate by analyzing the infrared thermal images of patients. The application of infrared thermal imaging technology provided objective measures for medical diagnosis and treatment in the field of Zheng studies and provided a new methodology for Zheng classification.

scholarly journals Real-Time Monitoring of the Thermal Effect for the Redox Flow Battery by an Infrared Thermal Imaging Technology

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6717
Author(s):  
Shu-Ling Huang ◽  
Chi-Ping Li ◽  
Chia-Chin Chang ◽  
Chen-Chen Tseng ◽  
Ming-Wei Wang ◽  
...  
Keyword(s):  
Thermal Effect ◽  
Thermal Imaging ◽  
Exchange Capacity ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Monitoring Method ◽  
Infrared Thermal Imaging ◽  
Imaging Technology ◽  
Charge Discharge

In this study, a new monitoring method was developed, titled infrared thermal imaging technology, which can effectively evaluate the thermal effect of the charge-discharge test in the vanadium/iodine redox flow battery (V/I RFB). The results show that the all-vanadium redox flow battery (all-V RFB) has a greater molar reaction Gibbs free energy change than that of the V/I RFB, representing a large thermal effect of the all-V RFB than the V/I RFB. The charge-discharge parameters, flow rate and current density, are important factors for inducing the thermal effect, because of the concentration polarization and the ohmic resistor. The new membrane (HS-SO3H) shows a high ion exchange capacity and a good ions crossover inhibitory for the V/I RFB system, and has a high coulomb efficiency that reaches 96%. The voltage efficiency was enhanced from 61% to 86% using the C-TiO2-Pd composite electrode as a cathode with the serpentine-type flow field for the V/I RFB. By adopting the high-resolution images of an infrared thermal imaging technology with the function of the temperature profile data, it is useful to evaluate the key components’ performance of the V/I RFB, and is a favorable candidate in the developing of the redox flow battery system.

scholarly journals Model Smoke Stream Adsorption over Cellulose Acetate Stick with Three-dimensional Temperature Gradient by Combining in-situ DRIFTS with Infrared Thermal Imaging

2021 ◽  
Author(s):  
Xin Xu ◽  
Xi Du ◽  
Feng Zheng ◽  
Lisheng Guo ◽  
Panwei Shi ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Cellulose Acetate ◽  
Human Health ◽  
Thermal Imaging ◽  
Three Dimensional ◽  
Adsorption Properties ◽  
Mathematical Explanation ◽  
Infrared Thermal Imaging ◽  
Different Temperatures

Abstract Understanding the adsorption of the smoke stream (SR) on cellulose acetate stick as cigarette filter with different temperatures is beneficial for controlling chemical emissions and reducing the toxic effect of smoking on human health. However the investigation of corresponding adsorption properties was missing because the adsorption of smoke stream (SR) on cigarette cellulose acetate stick is sensitive with the three-dimensional temperature gradient. In this work, the adsorption of typical smoke stream substances, such as CO, propylene glycol, formaldehyde, and acetone, on cellulose acetate stick were studied by in-situ diffuse reflectance Fourier transform infrared spectroscopy with different temperatures assisted by the infrared thermal imaging method. The adsorption capacities of cellulose acetate stick to these typical smoke stream substances is dependent on the adsorption time and temperature. The adsorption properties all fitted well with the Freundlich model. By a spectroscopic and mathematical explanation, quantifying contours of adsorption was performed. The 3D model of the normalized CO adsorption of cellulose acetate stick versus the spatial coordinates and time was established. This study gives unparalleled insight into smoking release characteristics of tobacco filtered by cellulose acetate and regulating cellulose acetate stick for reducing the negative effect of smoke on human health.

Optimization of Energy Efficiency of Residential Buildings Built of Bearing Three-Dimensional Blocks

2019 ◽  
pp. 23-27
Keyword(s):  
Energy Efficiency ◽  
Thermal Imaging ◽  
Control Method ◽  
Thermal Protection ◽  
Residential Buildings ◽  
Three Dimensional ◽  
Heat Fluxes ◽  
Point Of View ◽  
Transfer Resistance ◽  
Full Scale Tests

The article discusses the analysis of volume-block housing construction from the point of view of thermal protection of buildings. The results of full-scale tests on quality control of heat-protective properties of external walls and heat-accumulating ability of the object, on control of air permeability of the enclosing structures are presented. The multiplicity of air exchange in buildings made of volumetric blocks has been established. The estimation of the reduced heat transfer resistance of the exterior wall panel in natural conditions is made. A method of increasing the energy efficiency of houses of this type is proposed. During instrumental examination of the building, the method of complex thermal imaging control combining the advantages of the thermal imaging control method, making it possible to contactless record the distribution of radiation temperature on the surface in the field of view of the thermal imaging camera and high accuracy of contact methods for measuring temperature and heat fluxes, was used. Conducting thermal imaging of the outer and inner surfaces of the enclosing structure, we obtain the thermogram: two-dimensional images of the examined surfaces, where the color corresponds to the temperature value determined by the temperature scale of the thermogram. This thermogram makes it possible to conduct a detailed and reliable analysis of the state of the structure and its behavior in dynamics.

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