Design of a material ablation test stand

Author

Liu, Guangyu ; King, Tony L.

Author_Institution

Dept. of Electr. & Comput. Eng., Houston Univ., TX, USA

Volume

37

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

252

Lastpage

256

Abstract

A test stand is being designed to measure the ablation rate and threshold of EML related materials. A plasma armature is used to ablate the surface of the test material. The heat flux and exposure time are controlled by setting the armature current, augmentation current and backfill gas pressure. Ablation parameters may be determined by measuring the free arc´s velocity under various material surface heat loads. A completely closed-form solution has been developed to help quantify ablation parameters more accurately and efficiently. An algorithm is proposed for computing operating parameters, Recommendations for technical specifications of the test stand are provided

Keywords

arcs (electric); electromagnetic launchers; test equipment; thermal analysis; wear testing; EM launcher materials; ablation rate; ablation threshold; armature current; augmentation current; backfill gas pressure; closed-form solution; computing operating parameters; exposure time; free arc´s velocity; heat flux; material ablation test stand design; material surface heat loads; plasma armature; technical specifications recommendations; Insulation; Materials testing; Plasma density; Plasma materials processing; Plasma measurements; Plasma temperature; Railguns; Rails; Space heating; System testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.911832

Filename

911832