A novel accelerated wear test for magnetic recording disks

Autor:	R.-N. Kono, Thomas E. Karis, Myung S. Jhon, Paul R. Peck
Rok vydání:	1993
Předmět:	Materials science Acoustic emission Flying height Acoustics Fast Fourier transform Surface roughness Surface finish Electrical and Electronic Engineering Automatic testing Signal Asperity (geotechnical engineering) Electronic Optical and Magnetic Materials
Zdroj:	IEEE Transactions on Magnetics. 29:3969-3971
ISSN:	1941-0069 0018-9464
DOI:	10.1109/20.281359
Popis:	Future disk files will operate at lower flying height, thus increasing the possibility of asperity contacts. Conventional tests include sliding (pin-on-disk or slider-on-disk), flying (flyability tests), or contact start/stop modes of operation. A novel accelerated water test (NAWT) was developed to produce intermittent asperity contacts. The NAWT operates in a mixed sliding and flying region, and is designed to operate in a zone of interaction where a significant number of asperity contacts occur. The NAWT uses an acoustic emission sensor to detect asperity contacts. The signal is processed by fast Fourier transform to detect significant increase in the frequency and severity of the contacts. The new apparatus and procedure are presented along with illustrative results. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca0877d35d74652eb3e535e49c5ed154 https://doi.org/10.1109/20.281359 Zobrazit plný text záznamu