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Digital Display Technologies
Published in Glenn Kennel, Charles S. Swartz, Color and Mastering for Digital Cinema, 2012
Glenn Kennel, Charles S. Swartz
Challenges to the implementation of LED light sources include thermal stability and the implementation of fast-switching, high current load drivers. TI utilizes a feedback algorithm to control color shifts, offering superior stability over a wide range of operating temperatures. The rapid switching capability of LED technology is a good match for the fast switching characteristics of DLP® devices. This enables the use of much higher color refresh rates than today’s DLP® HDTV designs that employ mechanical color filter wheels. Multiple color segments can be generated and these colors can be randomized, allowing the virtual elimination of color refresh artifacts. Ultimately, images can be created with higher bit depth, better motion fidelity and higher brightness.
Design and Graphical Communication
Published in Roger Timings, Basic Manufacturing, 2006
Thermal stability is the ability of a material to retain its shape and properties over a wide or specified temperature range. The metal nickel and its alloys, such as ‘Invar’, are used in the manufacture of measuring tapes and master clock pendulums. ‘Monel’ is a nickel alloy that can resist high temperatures without appreciable corrosion or dimensional change (creep) and is used for the manufacture of steam turbine blades and ‘K-Monel’ alloy is used in the manufacture of pressure gauges.
Processing issues, machining, and applications of aluminum metal matrix composites
Published in Materials and Manufacturing Processes, 2018
Moreover, work is going on to develop graphene[15,161] and carbon nanotube[304,305] reinforced AMMCs for enhancement of specific properties. Choi et al.[306] produced carbon nanotube perform and carbon nanotube reinforced AMMCs using a low pressure casting method. These materials are useful for the heat sink applications in hybrid vehicles, electric vehicles and diodes. Anithambigai et al.[307] fabricated aluminum epoxy composite to reduce the thermal failure in high power LEDs. Researchers found satisfactory results and suggested future work to improve the thermal stability in high power LEDs using aluminum epoxy composites. However, production of such material is still at laboratory stage because of cost associated with production of composite.[308] Furthermore, wettability of such reinforced materials with aluminum matrix is a major obstacle in the path of industrialization of graphene and carbon nanotube reinforced aluminum matrix composites.[160]
Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure
Published in Virtual and Physical Prototyping, 2023
Jie Wan, Huarui Geng, Biao Chen, Jianghua Shen, Katsuyoshi Kondoh, Jinshan Li
The typical tensile strength of LPBFed AlSi10Mg is ∼450 MPa (Chen et al. 2018; Zhang et al. 2021; Wu et al. 2021), which is about 43% higher than conventional casting AlSi10Mg (∼315 MPa) (Tang and Chris Pistorius 2017). This is not only much superior to LPBFed conventional AA2024 (∼20–200 MPa) (Wang, Lin, et al. 2022), but also comparable to those LPBFed AA2024 modified by various inoculants (∼280–450 MPa) (Chen et al. 2022; Tan, Zhang, Sun, et al. 2020). Such outstanding mechanical property endues LPBFed AlSi10Mg with promising potential in various applications, which could trigger unlimited possibilities for relative fields. However, thermal stability is an important property for structural applications. By definition, thermal stability represents the material’s ability of retaining its microstructure and mechanical properties at elevated temperatures (Czerwinski 2020). It is vital for Al alloys to maintain a stable mechanical property at particular temperatures required for different applications. For example, Al alloys used for commercial aeroplane need to have a good thermally stability at room and slightly elevated temperatures (Boeing). Packaging and transportation of radioactive materials require Al alloys to have thermal stability at temperatures of 100–200°C for over 60 years (Ishiko et al. 2015). Cast Al alloys used for automotive combustion engines need to have high-thermal stability at temperatures over 200°C (Czerwinski et al. 2017). As an upstart structural material, the thermal stability of LPBFed AlSi10Mg has never been justified. Therefore, in order to facilitate the application of LPBFed AlSi10Mg, it is essential to assess its thermal stability.
Synthesis and self-assembly properties of thiacrown-cyclized tetrathiafulvalene organogelators
Published in Journal of Sulfur Chemistry, 2023
Ruibin Hou, Chao Xu, Jiajia Yan, Yan Xia, Dongfeng Li
The thermal stability of a material is important for device longevity. The results of thermogravimetric analysis (TGA) of compound 1 are shown in Figure 10. TGA showed an initial weight loss (5%) temperature of 258 °C, which revealed that compound 1 has high thermal stability (Figure 10).