Results 91 to 100 of about 2,422,228 (271)

FINITE ELEMENT ANALYSIS ON THE EFFECT OF SOLDER JOINT GEOMETRY FOR THE RELIABILITY OF BALL GRID ARRAY ASSEMBLY WITH FLEXIBLE AND RIGID PCBS [PDF]

Journal of Engineering Science and Technology, 2014
In the present study, three-dimensional (3D) finite element simulation on 132 PIN fleXBGATM package was performed to predict the effect of solder joint geometry on the reliability of Ball Grid Array (BGA) solder joints on flexible and rigid PCBs ...
CHUN-SEAN LAU, M. Z. ABDULLAH, M. ABDUL MUJEEBU, N. MD. YUSOP   +3 more
doaj  

Interfacial Reaction and Mechanical Properties of Sn-Bi Solder joints

Materials, 2017
Sn-Bi solder with different Bi content can realize a low-to-medium-to-high soldering process. To obtain the effect of Bi content in Sn-Bi solder on the microstructure of solder, interfacial behaviors in solder joints with Cu and the joints strength, five
Feng-Jiang Wang, Ying Huang, Zhi-Jie Zhang, Chao Yan   +3 more
semanticscholar   +1 more source

Transcending the Space‐Bandwidth and Lighting Trade‐Offs: A Programmable Self‐Mixing Interferometry Imager for Cross‐Scale Surface Inspection

Laser &Photonics Reviews, EarlyView.
This work reports a laser diode‐based self‐mixing interferometry imager featuring illumination‐invariance imaging, a 500 kHz pixel rate, and an 8.77 µm lateral resolution. It also features a programmable field‐of‐view and leading space‐bandwidth product that surpasses existing technologies by an order of magnitude, enabling cross‐scale workflow ...
Zhou Su, Feng Lin, Mubasher Ali, Yuanfu Tan, Wei‐Hsin Liao, Hay Wong   +5 more
wiley   +1 more source

Degradation of Crystalline Si‐Based Solar Modules With Varying Material Combinations—Part I: Encapsulant Degradation

Progress in Photovoltaics: Research and Applications, EarlyView.
This work deals with the degradation of solar modules with varying material combinations under accelerated aging conditions. By in situ moisture measurements and simulations of oxygen ingress, the consumption of stabilizing additives and polymer degradation can be correlated spatially resolved with the penetrating stressors.
Robert Heidrich, Oscar Lacroix‐Andrivet, Nikola Babić, Lasse Baldauf, Julia Rendon, Marko Jankovec, Marko Topič, Camille Bainier, Anton Mordvinkin, Hervé Vezin, Simon Pondaven, Ralph Gottschalg   +11 more
wiley   +1 more source

Research on Lifespan Prediction Methods Using Ultrasonic Microimaging for Electronic Packaging

Applied Sciences
Addressing the issue of lifespan prediction for electronic packages under thermal loading, this paper proposes a method for predicting the lifespan of electronic packages based on ultrasonic microimaging.
Haotian Wang, Hongwei Ma, Guangming Zhang, Yuan Chen, Ming Dong   +4 more
doaj   +1 more source

Tailoring Model‐Based Systems Engineering for Sub‐100 g PlanarSats: A Power‐First View Stack

Systems Engineering, EarlyView.
ABSTRACT This paper addresses how to apply model‐based systems engineering (MBSE) to ultrasmall planar satellites under severe power and resource constraints. PlanarSats are sub‐100‐gram spacecraft built as single printed‐circuit boards where the same surface must host both electronics and solar cells, so power generation, geometry, and component ...
Mehmet Şevket Uludaǧ, Alim Rüstem Aslan   +1 more
wiley   +1 more source

Effect of operating temperature on degradation of solder joints in crystalline silicon photovoltaic modules for improved reliability in hot climates

Solar Energy, 2018
Accelerated degradation of solder joint interconnections in crystalline silicon photovoltaic (c-Si PV) modules drives the high failure rate of the system operating in elevated temperatures.
O. Ogbomo, E. Amalu, Nduka Nnamdi (Ndy) Ekere, P. Olagbegi   +3 more
semanticscholar   +1 more source

Beyond thermoregulation: Active behavioural regulation of ultraviolet light exposure by a free‐ranging lizard

Journal of Animal Ecology, EarlyView.
This study provides a clear demonstration of active ultraviolet (UV) regulation in free‐ranging lizards and supports that microhabitat choice likely constrains UV regulation more than thermoregulation. Overall, it serves to establish UV as a parallel regulatory axis of physiological homeostasis and expand the range of testable hypotheses in animal ...
Matthew S. Lattanzio
wiley   +1 more source

Effects

Journal of King Saud University: Engineering Sciences, 2015
In this study, the effects of crosshead speeds on solder strength of Cu/Sn–9Zn/Cu lap joints were determined. The solder strength of lap joints increased with increasing crosshead speeds.
Muhammad Ghaddafy Affendy, Ahmad Azmin Mohamad   +1 more
doaj   +1 more source

‘Fine Men from Afar’: Cricket and Empire on the Home Front

History, EarlyView.
Abstract During the Second World War, contrary to enduring images of bombardment and scarcity, people on Britain's ‘Home Front’ continued to take part in a broad array of sporting activities. Cricket played a more significant role in the wartime sporting landscape than many historians have previously recognized.
Michael Collins
wiley   +1 more source