Results 181 to 190 of about 3,802 (230)

Hygrothermal aging of flip-chip assembled MOEMS

Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT), 2017
Low cost and miniaturized solutions for assembly of optical microelectromechanical systems (MOEMS) are critical for increased exploitation of optical sensors and devices in consumer applications. Examples of applications based on optical sensors and devices already near or on the market are auto-focus lenses and pico-projectors for mobile phones ...
Maaike M. Visser Taklo, Daniel Nilsen Wright, Sigbjørn Kolberg, Astrid-Sofie B. Vardøy, Faycal Hamou, Andreas Vogl, Helge Kristiansen, Erik Kalland, Thor Bakke   +8 more
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Effect of Hygrothermal Aging on Polyetherimide Composites

Journal of Reinforced Plastics and Composites, 2007
The aim of this study is to investigate the effect of hygrothermal aging on both the static and thermo-mechanical behavior of polyetherimide composites. Tensile testing and dynamic mechanical thermal analysis were performed on the hygrothermally aged polyetherimide composites in the climatic cabin.
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Strength of Epoxy/Glass Interfaces after Hygrothermal Aging

The Journal of Adhesion, 2005
ABSTRACT The stability of epoxy/glass interfaces subjected to hygrothermal aging was assessed using a fracture-mechanics approach. An epoxy system consisting of diglycidyl ether of bisphenol F cured with 2-ethyl-4-methyl-imidazole was bonded to borosilicate glass adherends that were treated with various types of adhesion promoters to provide a variety ...
Orasa Khayankarn, Raymond A. Pearson, Nikhil Verghese, Asjad Shafi   +3 more
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Durability of GFRP nanocomposites subjected to hygrothermal ageing

Composites Part B: Engineering, 2015
Abstract This paper presents long term durability prediction of 0–5 wt.% nanoclay/vinylester/glass fibre nanocomposites based on their tensile strength retention in accelerated hygrothermal ageing using Arrhenius rate model. The specimens were exposed to 30 °C, 50 °C and 60 °C and 95% relative humidity for 75 days and tested for tensile strength ...
Salim Firdosh, H.N. Narasimha Murthy, Ratna Pal, Gangadhar Angadi, N. Raghavendra, M. Krishna   +5 more
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Hygrothermal Aging Effect on Fatigue Behavior of GLARE

Journal of Reinforced Plastics and Composites, 2008
This article reports on the experimental characterization of the fatigue behavior of GLARE laminate taking into account the hygrothermal effects. The environmental factors can limit the applications of composites by deteriorating the mechanical properties during service. The importance of temperature at the time of conditioning plays an important role
Da Silva, D. A., Botelho, Edson Cocchieri, Rezende, M. C.   +2 more
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Durability of hygrothermally aged graphite/epoxy woven composite under combined hygrothermal conditions

International Journal of Fatigue, 2002
Abstract The objective of this study was to examine the effects of hygrothermal aging on the durability of a graphite/epoxy woven composite material system. The study was part of a larger project in which the objective was to evaluate and model the effects of moisture, temperature, and combined hygrothermal conditions on the strength and life of a ...
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Investigations on hygrothermal aging of thermoplastic polyurethane material

Materials & Design, 2009
Abstract In this investigation, the absorption and diffusion of water in thermoplastic polyurethane (TPU) was studied. Water-sorption experiments, physical and mechanical property tests were performed after immersion in water at a set temperature of 70 °C for up to 6 months.
A. Boubakri, K. Elleuch, N. Guermazi, H.F. Ayedi   +3 more
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Hygrothermal aging of mastic samples

This study examines the aging behavior of mastic samples subjected to hygrothermal condi-tions in a pressure aging vessel (PAV) for 10, 20, and 40 hours, as well as to reactive oxygen species and hu-midity in Vienna Binder Aging (VBA-WET). Fourier-transform infrared spectroscopy (FTIR) was used to analyze the chemical aging processes, and principal ...
Khaligi, S., Ma, L., Koning, R., Varveri, A.   +3 more
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Aging characteristics of epoxy resin in hygrothermal environment

2017 International Symposium on Electrical Insulating Materials (ISEIM), 2017
Because of excellent electrical properties, epoxy resin is widely used in packaging and casting power equipment. Moisture and temperature in the environment are inclined to seriously affect the insulation tolerance of epoxy resin. This work focuses on the aging characteristics of epoxy resin in hygrothermal environment. The effect of hygrothermal aging
Yu Liu, Youyuan Wang, Jun Liu, Shiyou Wang, Zhengyong Huang   +4 more
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Hygrothermal Aging Behavior of Fiber-Reinforced Composites

2019
Composite materials are ideal for engineering applications such as aircraft, spacecraft, automobiles, ship structures, roofs, wall panels, fishing rods, tennis rackets, and even retrofitting of buildings and bridges due to their high strength-to-weight and stiffness-to-weight ratios.
Shishir Kumar Sahu, Manoj Kumar Rath
openaire   +1 more source