Approaches for improving peak temperature detection capability of infrared thermograph

2016 ◽  
Author(s):  
Koichi Hirasawa ◽  
Yoshinori Aruga ◽  
Yasushi Ohashi ◽  
Hirotoshi Aoki ◽  
Toshio Tomimura
Keyword(s):  
Peak Temperature ◽  
Detection Capability ◽  
Temperature Detection ◽  
Infrared Thermograph

Estimation Method for Peak Temperature Detection Capability of Infrared Thermograph

2016 ◽  
Vol 2016 (0) ◽  
pp. A113
Author(s):  
Koichi Hirasawa ◽  
Yoshinori Aruga ◽  
Hirotoshi Aoki ◽  
Koki Tanaka ◽  
Tatsuya Sonoki ◽  
...  
Keyword(s):  
Estimation Method ◽  
Peak Temperature ◽  
Detection Capability ◽  
Temperature Detection ◽  
Infrared Thermograph

scholarly journals Additive Manufacturing of Miniaturized Peak Temperature Monitors for In-Pile Applications

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7688
Author(s):  
Kiyo T. Fujimoto ◽  
Lance A. Hone ◽  
Kory D. Manning ◽  
Robert D. Seifert ◽  
Kurt L. Davis ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Melting Point ◽  
Temperature Sensors ◽  
Peak Temperature ◽  
High Melting ◽  
High Melting Point ◽  
Scanning Calorimetry ◽  
Passive Monitoring ◽  
Sensor Applications ◽  
Temperature Detection

Passive monitoring techniques have been used for peak temperature measurements during irradiation tests by exploiting the melting point of well-characterized materials. Recent efforts to expand the capabilities of such peak temperature detection instrumentation include the development and testing of additively manufactured (AM) melt wires. In an effort to demonstrate and benchmark the performance and reliability of AM melt wires, we conducted a study to compare prototypical standard melt wires to an AM melt wire capsule, composed of printed aluminum, zinc, and tin melt wires. The lowest melting-point material used was Sn, with a melting point of approximately 230 °C, Zn melts at approximately 420 °C, and the high melting-point material was aluminum, with an approximate melting point of 660 °C. Through differential scanning calorimetry and furnace testing we show that the performance of our AM melt wire capsule was consistent with that of the standard melt-wire capsule, highlighting a path towards miniaturized peak-temperature sensors for in-pile sensor applications.

Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver

2013 ◽  
Vol E96.A (1) ◽  
pp. 285-292 ◽  
Author(s):  
Kenichi TAKIZAWA ◽  
Hirotaka YAMANE ◽  
Huan-Bang LI ◽  
Feng LU ◽  
Kohei OHNO ◽  
...  
Keyword(s):  
Mobile Wimax ◽  
Detection Capability ◽  
3Gpp Lte ◽  
Uwb Receiver

A walking bout reveals altered foot thermodynamics associated with unilateral transtibial amputation among individuals with type 2 diabetes

2020 ◽  
pp. 030936462096864
Author(s):  
Kyle R Leister ◽  
Shane R Wurdeman
Keyword(s):  
Type 2 Diabetes ◽  
Temperature Change ◽  
Foot Ulcer ◽  
Diabetic Foot Ulcer ◽  
Rate Of Change ◽  
Peak Temperature ◽  
Cross Sectional ◽  
Contralateral Limb ◽  
Transtibial Amputation

Background: Increased foot temperature among individuals with type 2 diabetes can be predictive of diabetic foot ulcer development. A combination of physiological and mechanical deficiencies may contribute to elevations in intact foot temperature during gait for individuals with type 2 diabetes and transtibial amputation. Objective: This study evaluated plantar foot temperature differences between individuals with type 2 diabetes with and without transtibial amputation. We hypothesized that individuals with transtibial amputation maintain increased foot temperature compared to those without amputation. Study Design: Cross-sectional, case control. Methods: A sample of 16 participants with type 2 diabetes and transtibial amputation, and 16 age- and sex-matched participants with type 2 diabetes without amputation were recruited. Foot temperatures were measured during resting, walking, and cooldown periods. Peak temperature, mean temperature, and rate of temperature change were analyzed for each period, and compared between cohorts. Results: Participants with amputation exhibited increased mean foot temperature while at rest and during walking. Participants without amputation exhibited increased rate of change of foot temperature during walking. No differences in peak temperature or rate of temperature change were observed during the baseline or cooldown periods. Conclusion: The current findings of altered foot temperature for individuals with transtibial amputation and type 2 diabetes suggest a possible reason for the high rates of contralateral limb ulceration and amputation among this population.

scholarly journals Age-dependent and radial sectional differences in the dynamic viscoelastic properties of bamboo culms and their possible relationship with the lignin structures

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Yoko Okahisa ◽  
Keisuke Kojiro ◽  
Hatsuki Ashiya ◽  
Takeru Tomita ◽  
Yuzo Furuta ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Viscoelastic Properties ◽  
Structural Variation ◽  
Thermal Softening ◽  
Peak Temperature ◽  
Outer Side ◽  
Phyllostachys Pubescens ◽  
Age Dependence ◽  
Age Dependent ◽  
S Peak

Abstract Age is an important factor that dictates bamboo’s mechanical properties. In Japan, bamboo plants aged 3–5 years are selected for use as materials because of their robustness and decorative or craft-friendly characteristics. In this study, the age-dependent and radial sectional differences in bamboo’s dynamic viscoelastic properties in relation to lignin structural variation, were evaluated. We used Phyllostachys pubescens samples at the current year and at 1.5, 3.5, 6.5, 9.5, 12.5, and 15.5 years of age. There was a clear age dependence in the peak temperature of tan δ and in the yield of thioacidolysis products derived from β-O-4 lignin structures. The highest peak temperature tan δ value was detected in 3.5-year-old bamboo, which contained the highest amount of the thioacidolysis products. Moreover, tan δ’s peak temperature was always higher on the outer side, and the ratio of S/G thioacidolysis products was always higher on the inner side of bamboo plants of all ages. These results suggest that changes in bamboo’s thermal softening properties from aging are caused by the maturation and degradation of lignin in bamboo.

scholarly journals Polymer Optical Waveguide Sensor Based on Fe-Amino-Triazole Complex Molecular Switches

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 195
Author(s):  
Muhammad Shaukat Khan ◽  
Hunain Farooq ◽  
Christopher Wittmund ◽  
Stephen Klimke ◽  
Roland Lachmayer ◽  
...  
Keyword(s):  
Molecular Complex ◽  
Electromagnetic Interference ◽  
Optical Power ◽  
Uv Curing ◽  
Molecular Complexes ◽  
Core Material ◽  
Absorption Bands ◽  
Electronic Temperature ◽  
Polymer Waveguide ◽  
Temperature Detection

We report on a polymer-waveguide-based temperature sensing system relying on switchable molecular complexes. The polymer waveguide cladding is fabricated using a maskless lithographic optical system and replicated onto polymer material (i.e., PMMA) using a hot embossing device. An iron-amino-triazole molecular complex material (i.e., [Fe(Htrz)2.85(NH2-trz)0.15](ClO4)2) is used to sense changes in ambient temperature. For this purpose, the core of the waveguide is filled with a mixture of core material (NOA68), and the molecular complex using doctor blading and UV curing is applied for solidification. The absorption spectrum of the molecular complex in the UV/VIS light range features two prominent absorption bands in the low-spin state. As temperature approaches room temperature, a spin-crossover transition occurs, and the molecular complex changes its color (i.e. spectral properties) from violet-pink to white. The measurement of the optical power transmitted through the waveguide as a function of temperature exhibits a memory effect with a hysteresis width of approx. 12 °C and sensitivity of 0.08 mW/°C. This enables optical rather than electronic temperature detection in environments where electromagnetic interference might influence the measurements.

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