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Diode laser technology has now been used in production for a number of years. Their unique beam shape, low ownership cost, high efficiency (~60%), and compact design make them an economic
This study investigated the integration of a new Dynamic Laser Area Heating (DLAH) within a powder bed fusion approach, Diode Point Melting (DPM. By employing a 44 W, 450 nm
Furthermore, adding this product to NTCJ''s lineup enables its product portfolio to support major photosensitive materials used in advanced semiconductor packaging. The Violet 402 nm laser
A special focus was on the transition between heat conduction and deep penetration welding as well as the keyhole behaviour. On the other hand, conventional welding trials were
University of Hull UK Modification of surfaces by laser heating has become a very important aspect of modern materials science. The author''s own interests in laser processing have been involved in the
Laser diode ar ea melting for h igh speed addit ive manufact uring of metallic co mponents Miguel Zava la-Arredon do a,N i c h o l a sB o o n e b, Jon Willmott b, David T.D. Chil ds b,P a v l
A normalised energy density (NED) processing map was developed to ensure successful material melting. Results demonstrated that DAM can achieve a relative density of 99.99% in single
Laser-Induced Thermal Processes: Heat 3 Transfer, Generation of Stresses, Melting and Solidification, Vaporization, and Phase Explosion Maxim V. Shugaev, Miao He, Yoann Levy, Alberto Mazzi,
This chapter provides a review of the fundamental mechanisms, thermodynamic driving forces, and kinetics of thermal processes involved in laser-material interactions, with a particular focus on the far
However this deflected laser raster scanning methodology is high cost, energy inefficient and encounters significant limitations on output productivity due to the rate of feedstock melting. This
2.2.3 Laser heating Laser heating techniques employ a laser source to heat high-melting temperature materials. Very high temperatures (well beyond 2000 K, sometimes even exceeding 5000 K) are
This study investigates the use of Diode Area Melting (DAM) to process 316L stainless steel (SS316L), an alternative to Laser Powder Bed Fusion (LPBF), utilising independently
The laser-diode-heated floating zone method have been developed. The molten zone is irradiated with concentrated and homogeneous laser lights. The temperature gradient at the interface
8.01.2.1.4 Laser melting Laser heating is used for selective hardening to produce thin surface zones. It follows rapid cooling, resulting martensitic structures (Davis, 2001). Laser melting does not require a
Abstract Re-melting of weld toes to improve the surface profile and thus reduce stress concentrations is a known fatigue improvement technique. In the study reported here, a novel
When a nanoparticle is exposed to excessively intense laser irradiation, the energy of which exceeds the melting and ionization energies, it passes into the state of nanoplasma, which is located in a shell of
Here we present a comprehensive model for heat exchange between a semiconductor laser diode and its environment that in-cludes the mechanisms of conduction, convection, and radiation.
There have been far too many papers over the years to cite here, and too many different models of laser heating and melting under different conditions of laser pulse, beam profile, target geometry, ambient
This investigation presents the first work investigating the melt pool properties and thermal effects of the multi-laser DAM process, modelling generated melt pools the unique thermal
This work details the development of a new additive manufacturing process known as Diode Area Melting (DAM). This process utilises customised architectural arrays of low power laser
Processes of laser melting, evaporation, and fragmentation of metal nanoparticles are examined experimentally and analytically. Threshold fluences of nanosecond, picosecond, and
This was accomplished by a set of laser diodes selectively illuminating the recently scanned and solidified cross-section of the part with homogeneous intensity, immediately after the
Carbon dioxide (CO2) lasers have been used in heat treating for over 30 years, as an alternative for induction or other traditional heat treating techniques. However, limitations in CO2 laser reliability
Thermal processes play a major role at all stages of laser-materials interactions and are responsible for both macro- and microscopic structural modification of materials. All processes that stem from the
In the experimental study, the laser diode was controlled by a graphical user interface (GUI) designed in LabVIEW interfaced with an Arduino Uno microcontroller. The recycled laser diode module was
ABSTRACT We have developed the laser-diode-heated floating zone (LDFZ) method, in order to improve the broad and inhomogeneous light focusing in the conventional lamp-heated floating zone
We have developed the laser-diode-heated floating zone (LDFZ) method, in order to improve the broad and inhomogeneous light focusing in the conventional lamp-heated floating zone
This in-situ dynamic heating approach removes the requirement for an entire powder bed to be pre-heated, directly laser heating the top layer of a powder bed with capacity for spatial
Compared to traditional light sources, laser diodes offer exceptional temperature stability and angled heating imparts additional stability to the molten