Stealth knowledge is used to make the object less observable and is defined in terms of absorption of electromagnetic waves that is an important research area used in defence research. Radar cross section is the proportion of the objectives capacity to reflect radar signals toward the radar beneficiary. Some techniques such as shaping, radar absorbing material...
Showing posts with label Engineering Physics. Show all posts
Showing posts with label Engineering Physics. Show all posts
Sunday, 1 August 2021
Saturday, 20 June 2020
Magnetic Properties of Titanium Substituted Ni - Zn Ferrites
Team IJTSRD
June 20, 2020
0
The polycrystalline samples of mixed ferrites Ni0.5 x Zn0.5TixFe2 2xO4 with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5 were prepared by ceramic method. Single phase formation is confirmed by x ray diffraction. It is seen that, for all samples the lattice constant remains constant this id due to constant in ionic radii. In the Ti substituted Ni Zn system magnetic...
Thursday, 5 March 2020
Effect of Temperature on the Electric Power of Si InAs and GaAs Based Solar Cells
Team IJTSRD
March 05, 2020
0
The electrical power is a nominal quantity which indicates the performance of the solar panels. It depends on the sunshine and also on the properties of the material used. In this work we are interested in the properties of materials to study the evolution of electrical power as a function of the temperature of the following cells based on Si silicon, InAs...
Tuesday, 29 October 2019
Experimental Study of Third Order Nonlinear Absorption in Pure and MG Doped Lithium Niobate Crystals
Team IJTSRD
October 29, 2019
0
With the discovery of laser in 1960 various nonlinear effect arises, the origin of nonlinear optics lies in the nonlinear response of materials to the incident coherent radiation. Using pulsed Q switched Nd YAG Laser, we have observed the important phenomena i.e. third order nonlinear effect in the LiNbO3 crystals. In present work, I have performed an experiment...
Wednesday, 17 July 2019
Microcontroller Based Room Temperature and Humidity Measurement System
Team IJTSRD
July 17, 2019
0
The objective of this paper is to achieve a functional system in terms of hardware and software, to measure temperature and humidity. In this paper, we use a microcontroller based DHT11 sensor was designed developed to measure the value of temperature and humidity at room temperature. A microcontroller PIC16F877A was used to control the developed system's...
Friday, 1 March 2019
Study on Speech Compression and Decompression by using Discrete Wavelet Transform
Team IJTSRD
March 01, 2019
0
Speech signal can be compressed and decompressed by discrete wavelet transform technique. Discrete wavelet transform compression is based on compressing speech signal by removing redundancies present in it. Speech compression is a technique to transform speech signal into compact form. Objective of compressing speech signal is to enhance transmission and...
Monday, 10 September 2018
A Comparison Study Between Two Hydrogen Sensors
In this research work, a comparison study has been carried out between Palladium Pd coated PMMA Poly Methyl Meth acryl ate optical sensor and Palladium thin films sensor that have been prepared on glass substrates. PMMA were sputter coated with Palladium using a sputter coating facility offered by the He riot Watt University, during sputter coating the target...
Saturday, 5 May 2018
Comparison Study Between Hydrogen Palladium Sensor and Hydrogen Manganese Dioxide Sensor
This research work oriented to compares between Palladium (Pd) thin films sensor that have been prepared on glass substrates and hydrogen sensor using optical ?ber, coated with Manganese dioxide (MnO2) nanostructures. Palladium thin films prepared by vaporization deposition technique with annealing temperature around 600C0.
Where, manganese dioxide,...
Tuesday, 29 March 2016
Stress Annealed CoFeNbB Alloy : A Structural Study
Article presents the influence of Nb content on structural properties of stress annealed Co21Fe64-xNbxB15 (x = 3, 5, 7) alloys has been studied using differential scanning calorimetery, in-situ length change measurements during annealing and x-ray diffraction. Results show that, increase of Nb content in the alloy increases the stability of the alloy against...
Sunday, 13 March 2016
Fe75-xCoxCu1Nb3Si15B6 Alloy with Rapid Stress Annealing
This Articler reports the effect of stress annealing treatment on the structural and magnetic properties of nanocrystalline Fe75-xCoxCu1Nb3Si15B6 & Co21Fe64-xNbxB15 alloys. Information obtained from magnetic measurements, X-ray diffraction measurements and Mössbauer spectroscopy reveal that for Fe75-xCoxCu1Nb3Si15B6 (x = 0, 2, 5) alloys the volume fraction...
