نتایج جستجو برای: infrared thermography
تعداد نتایج: 106900 فیلتر نتایج به سال:
BACKGROUND During middle ear surgery manipulations like burring, cooling with water, suction or even screwing cause changes of temperature which should be known to the surgeon. METHOD An infrared thermovision device was introduced for registration. RESULTS Thermography is an easy way for continuously recording thermic effects during surgery. If sufficient cooling is guaranteed, no temperatu...
Infrared (IR) thermography is a nondestructive, non-contact and non-intrusive technique that allows the fast inspection of large and complex structures with limited accessibility. Pulsed thermography is particularly interesting for the inspection of aerospace materials such as composites given that, after submitting the specimen surface to a thermal front, the most common types of subsurface di...
Two of the most exciting, yet overlooked, diagnostic procedures of this century are Digital Infrared Thermal Imaging (DITI) and Contact Regulation Thermography (CRT), otherwise simply termed thermography. Dr. Ali Meschi is a board-certified naturopathic physician at the forefront of this technique. "Thermography is a non-invasive, objective [and] non-radiative tool that uses [body heat] to diag...
This paper will discuss the importance of reliable and repeatable performance of molded case circuit breakers in today’s power distribution systems. The paper will review existing standards for maintenance of molded case breakers including procedures outlined in NEMA AB4 and IEEE1458. Common misconceptions and system application issues regarding these devices will be discussed. Several examples...
Infrared (IR) thermography has evolved in recent years from being an emerging nondestructive testing (NDT) technique to a viable approach for both aerospace manufacturing and in-service inspections. One of the drawbacks of thermography techniques is that no standard signal processing has been universally adopted and that different algorithms yield different sizing results. Additionally, the dat...
This study presents a methodology for detecting delaminations in carbon fiber reinforced polymer (CFRP)-jacketed concrete structures by infrared thermography. Four specimens with artificial were evaluated through passive experiments under different weather conditions including winter, summer, sunny, and rainy conditions. The test parameters considered the included size, depth, surface cover mor...
The study validated the application of infrared thermography in a serotonin-induced itch model in rats since the only available method in animal models of itch is the count of scratching bouts. Twenty four adult Sprague-Dawley male rats were used in 3 experiments: 1) local vasomotor response induced by intradermal serotonin (10 l) was evaluated against isotonic saline and Methysergide (10 l); 2...
BACKGROUND Double-blinded challenges are widely used for diagnosing food allergy but are time-consuming and cause severe reactions. Outcome relies on subjective interpretation of symptoms, which leads to variations in outcome between observers. Facial thermography combined with nasal peanut challenge was evaluated as a novel objective indicator of clinical allergy. METHODS Sixteen children wi...
There are many difficulties associated with the assessment of disease activity in rheumatoid arthritis. Infrared thermography has been used to quantify joint inflammation. The heat distribution index (HDI) is reproducible, sensitive, quantifiable, and not subject to circadian variation or interobserver error. In this study the HDIs for both elbows, wrists, knees, and ankles were summated and co...
During the weld defect detection, the heat transfer characteristics are closely related to the material properties of welded structure. Based on the electromagnetic induction infrared thermography technology, the heat transfer Characteristics of the welded material are studied with the changing temperature. By using the finite element analysis software COMSOL, the eddy current density and tempe...
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