Archives

  • Tips for Troubleshooting with the Operating Deflection Shape (ODS) Technique

    Paper No. 103 An Operating Deflection Shape (ODS) is a valuable tool used for visualizing vibration associated with reciprocating and...

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  • A comparison of Operating Deflection Shape and Motion Amplification Video Techniques for Vibration Analysis

    Paper No. 107 The Operating Deflection Shape (ODS) technique that was derived from Experimental Modal Analysis has served well to...

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  • Applying API and NEMA Specifications to Limit Electrical Current Pulsation and Torsional Vibration of Synchronous Motors Driving Reciprocating Compressors

    Paper No. 108 Unsteady torque from a reciprocating compressor can cause angular oscillation of the motor rotor. The rotational system...

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  • Coupling Failures in VFD Motor / Fan Systems Due to Torsional Vibration

    Paper No. 106 Variable frequency drives (VFDs) are used to control motors over a wide operating speed range. VFDs can...

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  • Coupling Failure in Engine-Driven Pipeline Compressor System

    Paper No. 105 Engine-driven compressor units at a gas transmission pipeline station experienced multiple coupling failures. These units had a...

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  • Electromagnetic Effects on the Torsional Natural Frequencies of an Induction Motor Driven Reciprocating Compressor With a Soft Coupling

    Paper No. 104 The electromagnetic field in the air gap of an electric motor is responsible for producing torque between...

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  • Applications of Modal Techniques to Noise Control of Hermetic Refrigeration Compressors

    Paper No. 89 That there exists interaction between vibration and structure-borne or structurally radiated sound is generally recognized. However, it...

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  • Vibrations in Reciprocating Machinery and Piping Systems

    Paper No. 68 J. C. Wachel/J. D. Tison, 23rd Turbomachinery Symposium, Texas A&M University, September 13-15, 1994 . A wide...

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  • Field Verification of Lateral-Torsional Coupling Effects

    Paper No. 21 J. C. Wachel/F. R. Szenasi, NASA CP 2133, Rotordynamics Instability Problems in High-Performance Turbomachinery, Texas A&M University,...

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  • A Discussion of the Various Loads Used to Rate Reciprocating Compressors

    Paper No. 95 By Kenneth E. Atkins, Martin Hinchliff, and Bruce McCain Reciprocating compressors are usually rated in terms of horsepower,...

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