A laser-based magnet measurement system has been developed to measure the magnetostrictive strain of large cylindrical samples. The measurement system incorporates a solenoid capable of generating a maximum magnetic field intensity of 3000 Oe and a laser displacement sensor. For calibration and evaluation purposes, the positive magnetostrictions of two different types of giant magnetostrictive ...

When the photovoltaic (PV) system suffers shading problems caused by different degrees and areas, shaded PV cells will consume electricity generate heat, corresponding bypass diode operating at a certain current conduct, special magnetic field be generated in space. In this study, magnetostrictive-based detection method device for are developed from theoretical, simulation, physical experimenta...

As a prominent concern regarding implantable devices, eliminating the threat of opportunistic bacterial infection represents a significant benefit to both patient health and device function. Current treatment options focus on chemical approaches to negate bacterial adhesion, however, these methods are in some ways limited. The scope of this study was to assess the efficacy of a novel means of m...

Gd5(SixGe1-x)4 has a complex magnetic-structural phase diagram which can be divided into three distinct regions. I t exhibits an unusual first order coupled magnetic-structural phase transition in the region 0.41 ≤ x ≤ 0.51. A series of magnetostrictive strain measurements were carried out as a function of magnetic field strength at different temperatures and as a function of temperature at nea...

ome of the highlights of the ongoing program within the Sensor Science Group of APL’s Milton S. Eisenhower Research and Technology Development Center to develop novel magnetometers are summarized. In particular, two approaches are described: a magnetostrictive device based on the deflection of a Terfenol-D coated single-crystal silicon cantilever and a Lorentz-force device based on a classical ...

Title of Thesis: DEVELOPMENT OF A PROTOTYPE MAGNETOSTRICTIVE ENERGY HARVESTING DEVICE Mark Elliott Staley, Master of Science, 2005 Thesis directed by: Professor Alison B. Flatau Department of Aerospace Engineering To enhance performance and safety, structures of all types are made “smart” with the addition of sensors. These sensors require power, but in some cases conventional power supply meth...

In the present work, FGM shells integrated with magnetostrictive layers acting as distributed sensors and actuators are modeled to control vibration attenuation of FGM shells with simply supported boundaryconditions. To achieve a mechanism for actively control of the oscillation amplitude of the integrated structure, a negative velocity proportional feedback control law is implemented in the st...

TbFe2 film prepared by a flash evaporation system onto Si(100) or polyamide substrate have been irradiated with different Ar ion doses at zero, 1.3x10 and 2.7x10 ions/cm and at 10 kV. Magnetostrictive properties of TbFe2 film with disordered structure, saturated magnetostriction and magnetostrictive susceptibility, improved by Ar ion beam irradiation due to increasing of in-plane compressive st...

This paper reports on the measurement of elastic modulus of thin film materials by a magnetostrictive sensor. Thin film materials of Cu, Cr, Al, Au, Sn, In, Au-rich lead free solder (AuSn) and SiC were sputter deposited onto well defined strips of Metglas sensor. The elastic modulus of the thin film materials was determined by measuring the resonant frequency of the sensors before and after fil...