This paper investigates the non-linear free and forced vibration response of immovable simply-supported composite rectangular plates. The plates are symmetric and are subjected to a transverse pressure which is harmonic in time. A novel procedure is implemented to obtain the non-linear ordinary differential equation by using first order shear deformation theory and Galerkin method. The multiple time scales perturbation method is utilised to obtain an analytical closed-form expression for the non-linear frequency and frequency response equation of the studied plates. After validation of present study with available literature, the non-linear free and forced vibrations of a fibre-metal laminated plate, named Glare 3, have been investigated. Also, the effects of some system parameters on the non-linear frequency have been studied.
- Inderscience Publishers
- Non-linear vibration response of laminated fibre-reinforced ...
Real-Time Surrogate Monitoring of Groundwater Pollutants at Oil and Gas Production Sites
Using surrogates to monitor groundwater quality in real timeThe development of oil and gas resources, especially by hydraulic fracturing, has increased concerns about potential groundwater contamination (Figure 1).Typically, grab sample collection and expensive analytical tests are required to determine whether or not groundwater quality has been compromised.Time-consuming analytical methods may be expensive and difficult to perform. Site operators, stakeholders, regulatory agencies, and the public often need...
Virtual visit to the IONICON headquarters in Innsbruck
A short video taken at the Austrian science open-house night 2018 Did you ever wonder how it looks like in our offices, our instrument assembling center or what we can do for you in our applications lab? If you never made it to visiting us but always wanted to, then this short video is exactly for you: During the Austrian Science Night 2018 “Lange Nacht der Forschung”, where we had open-house presentations, we captured a few scenes and now share them with you. Starring the IONICON team and our...
Apply now: PhD program funded by IONICON and FEM
INTRANEF – More analytical performance for agroindustrial applications Fondazione Edmund Mach (FEM) and IONICON are funding a PhD program in Physics at the University of Milan on the improvement of the analytical performance of PTR-MS in agroindustrial applications. The project is called “INTRANEF” for INcreasing ThRoughput and ANalytical Efficency of direct injection mass spectrometry for agroindustrial applications. The call is now open and interested candidates can apply until 01:00 pm of...
Analyze FAME in Diesel using FTIR | Spectroscopy Solutions
Biodiesel is a promising alternative to diesel produced from fossil fuels, however barriers still exist towards the creation of high efficiency biodiesel. The fatty acid methyl ester (FAME) content of biodiesels significantly affects their quality and performance. Fourier transform infrared (FTIR) spectroscopy using the Pearl™ liquid transmission unit from Specac provides a quick, easy, and accurate method of determining the FAME content of biodiesel. Biodiesel, made from cooking oil, animal fats and/or...
Analyze wine using ATR-FTIR spectroscopy | Spectroscopy Solutions
Wine analysis using spectroscopy Within quality assurance and process monitoring practices, spectroscopy has been widely used for many years1. Increasingly spectroscopic techniques and advanced data processing are being adopted for authenticity testing.2 Such verification is particularly important in the wine industry, which provides a premium-priced commodity. The retail value of wine is determined by a host of factors, including the origin, the varietal, and the year of production. The price of a bottle can...