When performing the pretest with specimen 1, there was a breakage after FBGs number 6, with the consequent invisibility of FBG sensors 7, 8, 9 and 10.2.4. Infrared Thermography Techniques for Tension-Field MeasurementIn a second phase of the tests, Infrared Thermography techniques have been used to calculate forces on a fourth specimen with the same specifications than used PR-171 with FBGs and strain gauges. It has been instrumented with four strain gauges on one side and cleaned on the other side, achieving inspections of IT of fatigue stresses and comparing with data obtained from gauges. The tests have been made after Inhibitors,Modulators,Libraries aging. Lay-Out of the test is shown on Figure 6. The model of the imager used in the tests is SILVER 480M with the following characteristics:320 �� 256 element InSb detector (pitch: 30 ��m).
Wavelength range: 3.6�C5.1 ��mThermal sensitivity: NEDT at 25 ��C < 20 mK.Speed: 380 Hz to full-frame and windowing options up to 20,000 HzSystem lock-in integrated on camera.Stress analysis software.Figure 6.Layout of thermography tests.Every material, depending on its temperature, emits an electromagnetic radiation whose wavelength Inhibitors,Modulators,Libraries depends on temperature. The range of wavelengths on this study is in the infrared band of the electromagnetic spectrum, so the measuring devices must be capable of detecting radiation in this band of spectrum. Another important factor when we measure stresses is the emissivity of the body, which is a characteristic of the material surface. In general, we can summarize that the higher the temperature at which a body is exposed the shorter its radiation��s wavelength is.
When providing energy to a material as tension its temperature increases slightly, so knowing its emissivity makes it possible to know the range Inhibitors,Modulators,Libraries of temperatures where the specimen moves. Using data processing software, and using as inputs the emissivity of the material and the frequency of cycling, we can calculate the stresses to which the material is subjected.The specimen has been subjected to different types Inhibitors,Modulators,Libraries of stress fatigue, varying the frequency of cycling and stress limits: Test 1: 10�C210 kN Test 2: 10�C310 kN Test 3: 40�C340 kN (E-MODE) Test 4: 60�C360 kN (E-MODE) Test 5: 40�C340 kN (D-MODE) Test 6: 60�C360 kN (D-MODE)These six tests were done coordinating the frequencies of fatigue and the frequency of acquisition of IT camera.
Drug_discovery The main objective of these trials was to study the effect of emissivity of the material and the frequ
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