• Title/Summary/Keyword: Thermography

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Effects of Hyeong points' Acupuncture of Three Foot-eum Collaterals on Abdominal Thermography of Healthy Human Beings (족삼음경(足三陰經) 형혈(滎穴) 자침(刺鍼)이 흉복부(胸腹部)의 체열변화(體熱變化)에 미치는 영향(影響))

  • Shin Jong-Keun;Kim Jae-Hyo;Park Sung-Sub;Park Kui-Jong;Kim Kyung-Sik;Sohn In-Chul
    • Korean Journal of Acupuncture
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    • v.20 no.4
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    • pp.1-16
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    • 2003

  • Objectives : This study was examined for effects of acupuncture of Hyeong points' Acupuncture of Three Foot-eum Collaterals on the abdominal thermography of health subject. Methods : The volunteers who participating in this study had taken rest for 20 - 30 minutes in room temperature $(23-25^{\circ}C)$ before the examination and informed them what to prohibit smoking, drinking and administration of drug for the previous day. The thermography of abdomen including a below part of the chest was taken using Infra-Red Imaging System (IR 2000, MEDI-CORE Co., Korea) by time interval of 15 minutes at 15 minutes before, just before and 15 minutes after, 30 minutes after and 45 minutes after acupuncture stimulation. Acupuncture was applied to the left Hyeong points' Acupuncture of Three Foot-eum Collaterals for 30 minutes. Results : The results showed that acupuncture of Hyeong points had more potencies of changes on all the ROIs of abdominal thermography than those of control group. Also, it was observed that the quantities of thermal changes following acupuncture of Hyeong points been increased comparing that of control group at all the ROIs (region of interest). Observed the thermography classified by ROI, however, it was failed that acupuncture of Hyeong points could modulate the specific areas concerning to the abdominal pathway of Three Foot-eum Collaterals. Conclusions : These results suggest that acupuncture of Hyeong points may modulate thermal distributions and changes of abdominal areas including the below of chest.

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IR Camera Technique Application for Evaluation of Gas Turbine Blades Covering Integrity (가스터빈의 코팅층 건정성 평가를 위한 적외선 열화상 카메라 기법 활용)

  • Kim J.Y.;Yang D.J.;Choi C.J.;Park S.G.;Ahn Y.S.;Jeong G.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.192-196
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    • 2005

  • Key part of main equipment in a gas turbine may be likely to be damaged due to operation under high temperature, high pressure, high-speed rotation, etc. Accordingly, the cost for maintenance increases and the damaged parts may cause generation to stop. The number of parts for maintenance also increases, but diagnostics technology fur the maintenance actually does not catch up with the demand. Blades are made of precipitation hardening Ni superalloy IN738 and the like for keeping hot strength. The surface of a blade is thermal-sprayed, using powder with main compositions such as Ni, Cr, Al, etc. in order to inhibit hot oxidation. Conventional regular maintenance of the coating layer of a blade is made by FPI (Fluorescent Penetrant Inspection) and MTP (Magnetic Particle Testing). Such methods, however, are complicated and take long time and also require much cost. In this study, defect diagnostics were tested for the coating layer of an industrial gas turbine blade, using an infraredthermography camera. Since the infrared thermography method can check a temperature distribution on a wide range of area by means of non-contact, it can advantageously save expenses and time as compared to conventional test methods. For the infrared thermography method, however, thermo-load must be applied onto a tested specimen and it is difficult to quantify the measured data. To solve the problems, this essay includes description about producing a specimen of a gas turbine blade (bucket), applying thermo-load onto the produced specimen, photographing thermography images by an infrared thermography camera, analyzing the thermography images, and pre-testing for analyzing defects on the coating layer of the gas turbine blade.

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Condition Monitoring under In-situ Lubrication Status of Bearing Using Infrared Thermography (적외선열화상을 이용한 베어링의 실시간 윤활상태에 따른 상태감시에 관한 연구)

  • Kim, Dong-Yeon;Hong, Dong-Pyo;Yu, Chung-Hwan;Kim, Won-Tae
    • Journal of the Korean Society for Nondestructive Testing
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    • v.30 no.2
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    • pp.121-125
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    • 2010

  • The infrared thermography technology rather than traditional nondestructive methods has benefits with non-contact and non-destructive testings in measuring for the fault diagnosis of the rotating machine. In this work, condition monitoring measurements using this advantage of thermography were proposed. From this study, the novel approach for the damage detection of a rotating machine was conducted based on the spectrum analysis. As results, by adopting the ball bearing used in the rotating machine applied extensively, an spectrum analysis with thermal imaging experiment was performed. Also, as analysing the temperature characteristics obtained from the infrared thermography for in-situ rotating ball bearing under the lubrication condition, it was concluded that infrared thermography for condition monitoring in the rotating machine at real time could be utilized in many industrial fields.

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Predicting lipoabdominoplasty complications with infrared thermography: a delta-R analysis

  • Resende, Patricia Rodrigues;Brioschi, Marcos Leal;Meneck, Franciele De;Neves, Eduardo Borba;Teixeira, Manoel Jacobsen
    • Archives of Plastic Surgery
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    • v.48 no.5
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    • pp.553-558
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    • 2021

  • The diagnosis of the main complications resulting from lipoabdominoplasty has not yet been standardized. Infrared thermal imaging has been used to assess possible complications, such as necrosis and changes in micro- and macro-circulation, based on perforator mapping techniques, among others. The objective of this study was to present two clinical cases involving thermal imaging monitoring of the healing process of lipoabdominoplasty in the immediate postoperative evaluation and its preliminary results. Infrared thermography was performed 24 hours after the operation and on postoperative days 5, 25, and 27. In clinical case 1, it was found that the delta-R (∆TR)-defined as the difference in minimum temperature between the highest and lowest points in the SA3 region (caution suction area) following the classification established by Matarasso-was 0.4℃ at 24 hours after surgery and decreased to 0.1℃ on a postoperative day 5. There were no complications in this case. In contrast, in clinical case 2, the ∆TR was 1.7℃ at 24 hours after surgery (upon hospital discharge) and remained high, at 2.2℃, on postoperative day 5. A higher ∆TR was found in the second patient, who developed necrosis of the surgical wound. The ∆TR thermal index may be a new tool for predicting possible complications, complementing the clinical evaluation and therapeutic decision-making.

  • https://doi.org/10.5999/aps.2021.00101 인용 PDF KSCI