Results 11 to 20 of about 5,565 (184)

Two-Color Pyrometer for Process Temperature Measurement During Machining [PDF]

Journal of Lightwave Technology, 2016
A fast fiber-optic two-color pyrometer operating on the optical communication bands is designed for temperature measurements in machining processes. Off-the-shelf low-loss fiber-optic demultiplexers and optoelectronics equipment are used in order to ...
Díaz Álvarez, José, Miguélez Garrido, María Henar, Tapetado Moraleda, Alberto, Vázquez García, María Carmen   +3 more
core   +5 more sources

Analysis of Cutting Behavior during Tapping and Measurement of Tool Edge Temperature Measured by a Two-Color Pyrometer

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
This paper proposes a method for measuring the tool edge temperature during tapping. The infrared ray from the tool edge of the tapping tool was measured using a two-color pyrometer with an optical fiber.
Ryutaro TANAKA, Shuhei YAMAZAKI, Akira HOSOKAWA, Tatsuaki FURUMOTO, Takashi UEDA, Masato OKADA   +5 more
doaj   +3 more sources

Simulation of Laser Heating of Aluminum and Model Validation via Two-Color Pyrometer and Shape Assessment. [PDF]

Materials (Basel), 2018
The modeling of laser-based processes is increasingly addressed in a competitive environment for two main reasons: Preventing a trial-and-error approach to set the optimum processing conditions and non-destructive real-time control. In this frame, a thermal model for laser heating in the form of non-penetrative bead-on-plate welds of aluminum alloy ...
Caiazzo F, Alfieri V.
europepmc   +5 more sources

Temperature-Tunable Heliconical and Ferroelectric Nematics for White Lasing. [PDF]

Adv Mater
The discovery of the ferroelectric nematic (NF) phase in 2017 and the spontaneous symmetry‐breaking of the ferroelectric twist‐bend nematic (NTBF)phase in 2024 have made major breakthroughs in the context of self‐assembly materials. This study presents pioneering temperature and voltage‐tunable lasing in both phases, demonstrating multicolor and in ...
Szukalska AB, Karcz J, Herman J, Pociecha D, Górecka E, Kula P, Myśliwiec J.   +6 more
europepmc   +2 more sources

Understanding Local Crystallography in Solar Cell Absorbers with Scanning Electron Diffraction. [PDF]

Small Methods
The local crystallographic properties play a major role in determining the macroscopic behavior of optoelectronic devices. Here, an approach employing scanning electron diffraction is demonstrated for three materials representative of different thin film solar cell technologies, where electron microscopy is combined with advanced data processing ...
Griesi A, Ivanov YP, Fairclough SM, Valluvar Oli A, Kusch G, Oliver RA, De Padova P, Ottaviani C, Wijesinghe U, Siebentritt S, Di Carlo A, Hutter OS, Longo G, Divitini G.   +13 more
europepmc   +2 more sources

High Spatial Resolution Optical Fiber Two Color Pyrometer With Fast Response [PDF]

IEEE Sensors Journal, 2021
Among the different temperature measurement techniques providing micrometer resolution none of them provide fast response and easy access to close distances to the target surface in difficult to access areas. Optical fiber pyrometers provide that access but previous works used large optical fibers with numerical apertures limiting the minimum spot size
A. Nunez Cascajero, A. Tapetado, C. Vazquez   +2 more
openaire   +2 more sources

Smoke Particle, Polycyclic Aromatic Hydrocarbons and Total Benzo[a]pyrene Toxic Equivalence Emitted by Palm Oil Sewage Sludge Bio-Char Combustion

Applied Sciences, 2021
The size distribution, total particle mass concentration (TPMC), polycyclic aromatic hydrocarbons (PAHs) value, and total Benzo[a]pyrene Toxic Equivalence (BaPTE) concentration of smoke particles from palm oil sewage sludge (POSS) bio-char combustion ...
Wachara Kalasee, Panya Dangwilailux
doaj   +1 more source

A Near-Surface Layer Heat Treatment of Die Casting Dies by Means of Electron-Beam Technology

Metals, 2021
Increasing the service life of die casting dies is an important goal of the foundry industry. Approaches are either material- or process-related. Despite new material concepts, hot work steels such as H11 are still predominantly used in the uncoated ...
Torsten Schuchardt, Sebastian Müller, Klaus Dilger   +2 more
doaj   +1 more source

Development of Tool Edge Temperature Measurement Method in Wet Cutting

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
In this paper, the measurement method of tool edge temperature using a two-color pyrometer with an optical fiber in wet cutting is proposed. Using the proposed method, the high pressure air supplied from the small hole where an optical fiber is inserted ...
Hideto NISHIMOTO, Ryutaro TANAKA, Akira HOSOKAWA, Takashi UEDA, Tatsuaki FURUMOTO   +4 more
doaj   +1 more source

Thermomechanical Impact of the Single-Lip Deep Hole Drilling on the Surface Integrity on the Example of Steel Components

Journal of Manufacturing and Materials Processing, 2021
The fatigue behavior of components made of quenched and tempered steel alloys is of elementary importance, especially in the automotive industry. To a great extent, the components’ fatigue strength is influenced by the surface integrity properties.
Jan Nickel, Nikolas Baak, Pascal Volke, Frank Walther, Dirk Biermann   +4 more
doaj   +1 more source