Results 51 to 60 of about 2,422,228 (271)
QUALITY CONTROL AUTOMATED LASER-ULTRASONIC METHOD FOR SOLDER JOINTS OF NOZZLES OF CHAMBERS IN LIQUID ROCKET ENGINES [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2016 The paper deals with the problem of quality control for solder joints of nozzles of chambers in liquid rocket engines (LRE). The nozzle of LRE chamber is a responsible product, operating in conditions of high pressure and temperature gradient, having a ...
D. S. Sergeev +3 more
doaj +1 more source
Microfabrication of Soft Millirobots Propelled by Low Voltage Electrohydraulic Actuators
Advanced Materials Technologies, EarlyView.Manual layer‐by‐layer assembly is replaced by wafer‐level MEMS batch fabrication for compliant polymer‐based electrohydraulic actuators. The microfabricated devices integrate sacrificially defined microcavities, Parylene‐C‐sealed inlets, and multilayer polymer–metal films.
Shai Shmulevich +2 more
wiley +1 more source
Ball Impact Reliability of Zn-Sn High-Temperature Solder Joints Bonded with Different Substrates
, 2014 In this study, the high-speed deformation behavior of solder joints formed withPb-free Zn-Sn and commercial Pb-Sn alloys bonded on different substrateswas investigated by the ball impact test method. Overall, Zn-Sn jointsexhibited greater impact strength
Tsung-Yun Pai +5 more
core +1 more source
Reliability of SnPbSb/Cu Solder Joint in the High-Temperature Application
Crystals, 2022 With the continuous miniaturization and increase in functionality of the electronic devices used in the aerospace and national defense industries, the requirements for reliability of the solder joints in these devices keep increasing.
Jiachen Xu +4 more
doaj +1 more source
Differential Tissue‐Coupled Powering for Battery‐Free Injectable Electroceuticals
Advanced Science, EarlyView.A thread‐like injectable neural stimulator is powered through differential tissue‐coupled powering (DTCP), which harvests RF‐frequency tissue potentials with an elongated receiver while preserving a injectable cross‐section. The system integrates an ASIC, stimulation electrodes, and a portable transmitter, enabling wireless peripheral nerve stimulation,
Han Wu +13 more
wiley +1 more source
Deformation behavior of lLeadless 60% Pb–40% Sn solder joints
, 1987 Room temperature deformation data of leadless solder joints are reported. The joints were sheared under cyclic, displacement controlled loading at frequencies between 0.001 and 0.01 Hz.
Ravichandran Subrahmanyan +5 more
core +1 more source
Electrochemical migration of lead free solder joints
, 2022 S.229-241Electrochemical migration (ECM) tests on lead bearing and lead free solder joints on Cu lamination on FR-4 board were conducted by applying constant voltage.
Schmitt, E., Jillek, W., Yu, D.Q.
core +1 more source
Solder joint failures under thermo-mechanical loading conditions – a review [PDF]
, 2020 Solder joints play a critical role in electronic devices by providing electrical, mechanical and thermal interconnections. These miniature joints are also the weakest links in an electronic device.
Mallik, Sabuj +3 more
core +1 more source
Receptogenesis in a Vascularized Robotic Embodiment
Advanced Science, EarlyView.Functional augmentation of situated robots via ex novo hardware generation extends physical adaptability. Drawing inspiration from open circulatory systems for mass and function redistribution, this study presents a vascularized robotic composite exhibiting receptogenesis ‐ the on‐demand construction of sensors ‐ from internal fluid reserves based on ...
Kadri‐Ann Pankratov +8 more
wiley +1 more source
Crystals, 2023 In deep space exploration the exploration equipment will inevitably experience the harsh environment of cryogenic temperature. Solder joints belong to the most vulnerable parts of electronic equipment, and the harsh environment of extreme cryogenic ...
Xiaotong Guo +6 more
doaj +1 more source