Understanding infrared thermography reading 3 part 1 of 2

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Fig. 2a. Slit Response Function. Camera sees slit lips of radiometric temperature T0 (back side radiometric temperature) and The body behind the slit of radiometric temperature T1 (“slit “ temperature). Slit width is d and D is the distance slit-camera (Figure is issue from reference 4) Charlie Chong/ Fion Zhang http://qirt.gel.ulaval.ca/archives/qirt2006/papers/025.pdf
Frame Repetition Rate Frame repetition rate replaces speed of response and is defined as the number of times every point on the target is scanned in one second. This should not be confused with field rate. Some imagers are designed to interlace consecutive fields. each consisting of alternate image lines. This results in images less disconcerting 令人不安的 to the human eye. The frame rate in this case would be one half the field rate. An example of a typical frame repetition rate specification for an imager would be "frame repetition rate = 30 frames per second." For a line scanner. the term line scan rate is used and it is expressed in lines per second. Comments: For interlace field rate scanning; The frame rate in this case would be one half the field rate. Charlie Chong/ Fion Zhang
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Infrared Thermal Testing Reading II
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Infrared Thermography Charlie Chong
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DEADLY French Military Mistral Anti
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LEAKED Body Scan Images From The TS
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Bf4 little bird ah-6j night vision
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Infrared Electrical Testing ■ htt
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Fion Zhang at Shanghai 29th May 201
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Charlie Chong/ Fion Zhang http://gr
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IVONA TTS Capable. Charlie Chong/ F
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Chapter 1 Principles & Theory Charl
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Keywords: Principles: • temperatu
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1.2 Fundamentals of Temperature and
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The three modes of heat transfer ar
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Temperature and Temperature Scales
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Temperature and Temperature Scales
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Boston Tea Party - New governances
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The Mighty Fahrenheit & ⅝”, Eng
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Conductive Heat Transfer Conductive
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Where: • Q/A = the rate of heat t
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Thermal conductivity is highest for
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Figure 1.2: Convective heat flow Ch
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The presence of the plate causes th
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R c is easier to use than h when de
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Figure 1.3: Infrared in the electro
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1.3 Fundamentals of Radiative Heat
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Figure 1.5: Infrared radiation impi
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Reflections off Specular and Diffus
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Transient Heat Exchange The previou
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Radiant Energy Related to Target Su
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Figure 1.6: Typical blackbody distr
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Wien's displacement law: λ max = b
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Figure 1.7: Three sets of character
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Figure 1.8: Spectral distribution o
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Figure 1.9: Components of energy re
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As the path length increases to mor
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When there is a solid material, suc
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Figure 1.12: Transmission curves of
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Convective Heat Transfer Convective
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Q1. At a temperature of absolute ze
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Q7. The mode of heat transfer most
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Q13. The peak emitting wavelength o
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Q19. The spectral band in which gla
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Chapter 2 Materials and Their Prope
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Emissivity Ɛ When using infrared t
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Reflectivity ρ Reflectivity of a s
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Transmissivity τ When the target s
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2.3 Heat Conducting Properties of M
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Heat Capacity The heat capacity of
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Thermal Diffusivity Diffusivily rel
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Partial Table 2.1 Charlie Chong/ Fi
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Thermal Diffusivity As in emissivit
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1. The best way to determine the ef
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7. Thermal diffusivity is: a. high
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Chapter 3 Thermal Instrumentation C
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What is Thermopile A thermopile is
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The Working Principle: Thermopile,
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IR Thermopiles Sensor (non-contact)
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Thermocouple General description: T
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Liquid or Gas Expansion Devices Man
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Liquid Crystal Thermometer A liquid
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Thermocouple Thermocouple grade wir
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Resistance Thermometers - Resistanc
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Platinum Resistance Thermometer htt
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Resistance Temperature Detector (RT
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RTD Configurations In addition to d
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The four-wire configuration consist
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Thermistor A thermistor is a type o
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Thermistor Charlie Chong/ Fion Zhan
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■ Thermochromic Liquid Crystals T
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■ Resistance Thermometers Resista
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■ Heat Flux Indicators Heat flux
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Pyrometer A pyrometer is a device t
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Brightness Pyrometers Charlie Chong
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3.4 Basic Configurations of Infrare
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Figure 3.1: Basic configuration of
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Figure 3.2 illustrates the spectral
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Discussion Subject: Why (or How) th
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Figure 3.2: Response Curves of Vari
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The cross section of this collectin
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Figure 4-7. The field of view (FOV)
Page 161 and 162: What is IFOV? IFOV (instantaneous f
Page 163 and 164: Figure 4-8. An IFOV measurement is
Page 165 and 166: Figure 3.3: Adding the scanning ele
Page 167 and 168: Figure 3.4: Line scanner scanning c
Page 169 and 170: Optomechanical Scanning To scan opt
Page 171 and 172: Electronic Scanning - Pyroelectric
Page 173 and 174: Focal Plane Array Imaging First int
Page 175 and 176: IRFPA - Large IR mosaic prototype a
Page 177 and 178: Infrared sensors with 3D ROIC for c
Page 179 and 180: Qualitative Versus Quantitative The
Page 181 and 182: Performance Characteristics of Poin
Page 183 and 184: Repeatability Repeatability describ
Page 185 and 186: Temperature sensitivity is also cal
Page 187 and 188: A typical speed of response specifi
Page 189 and 190: Target Spot Size and Working Distan
Page 191 and 192: This would take into account the sh
Page 193 and 194: EXAM score! D=σ∙d IFOV ratio = d
Page 195 and 196: Sensor Environment Sensor environme
Page 197 and 198: the following three classes of filt
Page 199 and 200: Thermographers have learned that a
Page 201 and 202: MWIR OR LWIR? For general purpose u
Page 203 and 204: Total Field of View (FOV total ) Fo
Page 205 and 206: Figure 3.10: Total field of view (T
Page 207 and 208: EXAM score! IFOV is also called; im
Page 209 and 210: Measurement Spatial Resolution Meas
Page 211: IFOV meas -SRF 95 SRF refers to: 95
Page 215 and 216: Thermal Imaging Display and Diagnos
Page 217 and 218: FOV - Animation Charlie Chong/ Fion
Page 219 and 220: Questions & Answers Subject: Answer
Page 221 and 222: Charlie Chong/ Fion Zhang
Page 223 and 224: 3.8 Descriptions of Thermal Sensing
Page 225 and 226: ■ Portable Handheld Devices Porta
Page 227 and 228: Figure 3.11: Hand held infrared rad
Page 229 and 230: Note that the laser beam docs not r
Page 231 and 232: ■ Online Process Monitoring and C
Page 233 and 234: IR Sensor Module Charlie Chong/ Fio
Page 235 and 236: IR Sensor Module Charlie Chong/ Fio
Page 237 and 238: ■ Devices with Special Configurat
Page 239 and 240: Two-color Pyrometers or Ratio Pyrom
Page 241 and 242: Two-color Pyrometers or Ratio Pyrom
Page 243 and 244: Figure 3-4: The “Two-Color” IR
Page 245 and 246: Figure 3-6: Radio Pyometry Via a Fi
Page 247 and 248: 2. Infrared radiometric microscopes
Page 249 and 250: Fiberoptic Coupled Pyrometers Charl
Page 251 and 252: It is not unusual to find line scan
Page 253 and 254: FLIR- Forward Looking Infrared Char
Page 255 and 256: Imagers (Thermographic Instruments)
Page 257 and 258: ● Electronically Scanned Viewers
Page 259 and 260: ● Staring Infrared Focal Plane Ar
Page 261 and 262: Infrared focal plane array imager C
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Qualitative IrFPA Charlie Chong/ Fi
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■ Quantitative Thermal Imagers Qu
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● Focal Plane Array Radiometers F
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Infrared focal plane array imager C
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Quantitative IR Image Charlie Chong
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3.9 Thermal Imaging Display and Dia
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Changes in the corrections setting
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Image Recording, Storage and Recove
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Database and Documentation Records,
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3.10 Photorecording Accessories for
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Chapter 3 Review Questions Q&A 1. b
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Q4. The performance parameters that
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Q10. The purpose of adding an infra
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Q16. Most infrared focal plane arra
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Q22. Filters, lenses and transmitti
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End Of Reading Charlie Chong/ Fion
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Good Luck Charlie Chong/ Fion Zhang
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