Results 41 to 50 of about 27,379 (235)
In situ optical observations of keyhole dynamics during laser drilling
, 2013 To better understand the laser drilling process and especially to clarify keyhole dynamics in metal drilling, a quasi-two-dimensional drilling assembly was set up with a thin sandwich structure.
陈猛 +5 more
core +1 more source
Dizhen xuebao基于震前、震后多期卫星数据，对2001年11月4日昆仑山口西MS8.1同震地表破裂进行了研究，结果表明：① 同震破裂带的西段在震前未发现先存破裂遗迹，而东段是在先存地震破裂遗迹上再次发生了破裂。② 震后两年，湖面冰、大型河道、冲沟和冲洪积扇上的地表破裂迅速地被活动性流水和气温变化等破坏，在影像上已无踪迹；震后二十年，低级阶地的地表破裂几乎无法识别，而高级阶地的破裂带保留较完整，可识别长度锐减至64%，呈“碎片”化展布。因此，同震地表破裂带的影像识别主要受所处地貌位置和气候变化等地表作用过程的影响 ...
Jiayi Li +3 more
doaj +1 more source
Advanced Science, EarlyView.ABSTRACT The multifunctional integration of chips with high flexibility and scalable manufacturing is crucial for enhancing chip performance, reducing chip size, and simplifying chip design. However, balancing volume, cost, flexibility, and functionality using traditional heterogeneous integration methods is challenging.
Lang Chen +7 more
wiley +1 more source
Laser Beam and Laser-Arc Hybrid Welding of Aluminium Alloys
Metals, 2021 Aluminium alloys are widely used in many industries due to their high strength-to-weight ratios and resistance to corrosion. Due to their specific thermophysical properties and intricate physical metallurgy, these alloys are challenging to weld.
Ivan Bunaziv +4 more
doaj +1 more source
Advanced Science, EarlyView.ABSTRACT Class Switch Recombination (CSR) is essential for generating high‐affinity antibody isotypes from IgM during adaptive humoral responses. Despite well‐established roles for various transcription factors, whether CSR is subject to dedicated post‐transcriptional control represents a significant gap in knowledge.
Siyuan Sun +19 more
wiley +1 more source
Analyse und Modellierung der Keyhole-Dynamik beim Laserstrahlschweißen von Aluminiumlegierungen [PDF]
, 2002 The subject of this thesis is the behaviour of the keyhole in the laser welding process. In deep penetration laser welding there exists a complex system of weld pool, keyhole, and solid material under the influence of the laser beam.
Pleteit, Hermann
core
Keyhole shapes during laser welding of thin metal sheets [PDF]
, 2007 Camera observations of the full penetration keyhole laser welding process show that the keyhole shape is elongated under certain welding conditions. Under these unfavourable circumstances, the welding process is susceptible to holes in the weld bead ...
de Lange, D.F. +4 more
core +1 more source
Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing
Advanced Science, EarlyView.Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang +5 more
wiley +1 more source
Influência de parâmetros e variáveis da soldagem plasma sobre as características da solda com ênfase na análise da abertura e no fechamento do keyhole / [PDF]
, 1999 Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro ...
Vergara Díaz, Victor Manuel
core
3D‐Printed Magnetoelectronics for Interactive Appliances and Self‐Aware 4D‐Printed Mechatronics
Advanced Science, EarlyView.3D‐printed magnetoelectronics integrate high‐performance magnetic field sensing directly into complex structural components. Flexible spring and cross‐shaped sensors exhibit giant magnetoimpedance and 3D Hall sensing for vector field reconstruction. Applications include smart‐home switches, robotic joysticks, volumetric magnetometers, and self‐aware 4D‐
Eduardo Sergio Oliveros‐Mata +5 more
wiley +1 more source