1 / 2

Torroidal cores –

A. B. C. Intellectual Merit. Minority Research Opportunities in Science and Engineering at the US Naval Research Laboratory (NRL) Paul Charles, US Naval Research Laboratory, DMR 0648917. Specific Project Example (2007): “CORE LOSS ANALYSIS OF RAPIDLY SOLDIFIED ALLOYS ”

leala
Download Presentation

Torroidal cores –

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A B C Intellectual Merit Minority Research Opportunities in Science and Engineering at the US Naval Research Laboratory (NRL)Paul Charles, US Naval Research Laboratory, DMR 0648917 • Specific Project Example (2007): • “CORE LOSS ANALYSIS OF RAPIDLY SOLDIFIED ALLOYS” • Mentor: Dr. M. Willard - Materials Science and Technology Division • Recently developed nanocrystalline soft magnetic alloys at NRL which exhibit superior magnetic properties at high frequencies • Navy Impact: power electronics applications - inductor core materials • Fine grained microstructure (e.g. 5-15 nm dia.) produced by a two step process: (1) rapid solidification to create an amorphous alloy, and (2) isothermal annealing for crystallization • Student conducted research which investigated core losses of nanocrystalline alloys to determine efficiency of material with respect to frequency and magnetic induction Torroidal cores – (a) before the annealing, (b) after curing in epoxy, (c) after primary and secondary wire wraps Magnetic hysteresis loop showing the magnetic induction, B, as a function of magnetic field, H

  2. Minority Research Opportunities in Science and Engineering at the US Naval Research Laboratory (NRL)Paul Charles, US Naval Research Laboratory, DMR 0648917 Broader Impact • Overall Program - Broad Impact: • Major goal: Encourage minority students to pursue advanced degrees in Science, Math, Engineering, and related disciplines. Emphasis on encouraging students toward graduate studies, teaching, and/or careers in science and technology. • First hand experience of high level research to students in underrepresented groups. Formal training on laboratory protocols and instrument operation with a gradual progression during their tenure to a much higher level of independence. • Benefit to scientific community in scientific findings and publications resulting from research projects. An Arc-melter was used to make alloys with new compositions (summer intern and research associate shown) • Organized activities • Scientific and skill set seminars (resume writing) • Weekly and final technical report • Oral presentation • Graduate School site visits (provide students the opportunity to discuss admissions criteria, financial aid, and life as a graduate student) • Picnic, brown bag lunch (open forum for discussions)

More Related