Transcription of MEASUREMENT - Iet Labs
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MEASUREMENT - Iet Labs
MEASUREMENT OF VIBRATION by ERVIN E. GROSS, Jr. Engineer, General Radio Company GENERAL RADIO COMPANY 2 7 5 MA S S A C H U S E T T S A V E N U E CAMBRIDGE 39 MASSACHUSETTS 90 West Street New York 6 , New York 8055 13th Street Silver Spring, Maryland 1150 York Road Abington, Pennsylvania Form 900-A 920 South Michigan Avenue Chicago 5 , Illinois 1 000 North Seward Street Los Angeles 38, California Printed in Copyright 1955 by General Radio Co. Cambridge, Mass., U. S. A. TABLE OF CONTENTS INTRODUCTION 1 II VIBRATION TERMS-THEIR MEANINGS AND 2 Displacement, Velocity, and Acceler::tion .. 2 3 Non-Sinusoidal Vibrations .. 3 III DESCRIPTION OF GENERAL RADIO VIBRATION-MEASURING INSTRUMENTS .. 4 Type 761-A Vibration 4 Vibration Pickup with Sound-Level Meter .. 7 Analyzers .. 8 Type 762-B Vibration 9 Type 760-B Sound 11 Type 736-A Wav~ 11 Type 1550-A Octave-Band 12 Stroboscopes .. 12 IV ADDITIONAL EQUIPMENT OF OTHER MANUFACTURE .. 14 Cathode-Ray Oscillograph .. 14 Magnetic Tape 14 Recording Galvanometer.
CHAPTER INTRODUCTION Vibration is the term used to describe continu ing or steady-state periodic motion. The motion may be simple h~1rmnnic motion like tlut of a pendulum, or it may be very complex like a ride
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