Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015
Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration - October 2015
The Measurement and Calibration of Sound Reproducing Systems - July 2015
New Wear-Resistant Permalloy Material for Magnetic Recording-Head Application
WEAR-RESISTANT HY MU 800/1, presently in pilot production by Carpenter Technology, contains small wear-resistant particles dispersed throughout. Saturation induction for this new material is only slightly diluted by the nonmagnetic particles. Although the low-frequency permeability of annealed ring samples of the wear-resistant material is much lower than for HY MU 80/1, when the materials are encapsulated, as in a magnetic head, the initial dc permeabilities are nearly the same: 4400 for the standard and 3900 for the wear-resistant material. Wear tests using magnetic tape are described: the new material wears away at about 10% of the rate of Carpenter HY MU 80. The new material has mechanical working properties essentially identical to the standard material. Head performance studies show that WEAR-RESISTANCE HA MU 800 can be used successfully in magnetic recording heads, particularly if the gap length is not extremely small.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.