TIA/EIA-455-158:1997 (R2001)

$22.75

FOTP-158 Measurement of Breakaway Frictional Force in Fiber Optic Connector Alignment Sleeves

Published By	Publication Date	Number of Pages
TIA	1997	18

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Description

INTRODUCTION

Intent

The objective of this FOTP is to measure the breakaway
frictional force between the ferrule and the sleeve in fiber optic
connectors.

Background

The contact force between the mating ferrules in an optical
connector is the difference between the friction force between the
ferrule and the sleeve, and the spring force of the connector. To
maintain contact the friction force must remain below the spring
force. The procedures in this FOTP have been selected to estimate
the maximum breakaway frictional force that will exist between the
ferrule and the sleeve.

The mechanics of friction result in significant variations in
the measurement of breakaway friction. The criteria to be applied
to the results of these measurements must account for the spread
that is inherent in the mechanism being measured. See Annex B

Description

The specimen is a connector alignment sleeve. The measurement is
made with two gage pins inserted so they meet at the center of the
sleeve. Force is applied between one of the gage pins and the
sleeve as shown in Figure 1.

To account for possible asymmetry between the ends of the sleeve
an equal number of measurements are made with the gage pin being
removed from each end of the sleeve.

Additional information