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Now showing items 21-30 of 133
Analysis Of Three Impeller Failures: Experimental Techniques Used To Establish Causes
(Texas A&M University. Gas Turbine Laboratories, 1975)
Three first-stage impellers have failed in catalytic wet gas service. Two of the failed impellers were made of K-Monel material; the third was made of SAE 4330 material. In the first two cases, the structural integrity of ...
Steam Turbine Blade Failures, Causes And Correction
(Texas A&M University. Gas Turbine Laboratories, 1975)
This paper is meant to help with failure investigation, presenting a review of the causes and effects involved when blades fail. Included are descriptions of failure mechanisms (stress; resonance; environment) and of the ...
Rotor-Bearing System Design Audit
(Texas A&M University. Gas Turbine Laboratories, 1975)
This paper concentrates on one aspect of the design audit of rotating machinery – review of the rotor-bearing system dynamics. A systematic approach for performing this audit is presented. This approach is one which has ...
Low Frequency Vibrations At Centrifugal Plants
(Texas A&M University. Gas Turbine Laboratories, 1975)
Low frequency vibrations at centrifugal compressor and pump installations are usually discarded as unlikely. However, severe acoustically excited vibrations at frequencies as low as 5 or 10 Hz have been observed at a number ...
High Speed Coupling Failure Analysis
(Texas A&M University. Gas Turbine Laboratories, 1975)
This paper deals with the design functions and case histories of gear couplings. A brief discussion of the various basic design features of gear couplings and their lubrication system is presented. This is followed by ...
Large High Pressure Centrifugal Compressors For Oxygen Service
(Texas A&M University. Gas Turbine Laboratories, 1976)
Centrifugal compressors have been used to compress oxygen for at least 25 years. Until ten years ago, the flows were relatively small and discharge pressures were relatively low. In the mid 1960's the size of single train ...
Design And Application Of Squeeze Film Dampers For Turbomachinery Stabilization
(Texas A&M University. Gas Turbine Laboratories, 1975)
This study investigates the steady-state and transient response of the squeeze film damper bearing. Both the steady-state and transient equations for the hydrodynamic bearing forces are derived. The steady-state equations ...
Impact Of Recent Tilting Pad Thrust Bearing Tests On Steam Turbine Design And Performance
(Texas A&M University. Gas Turbine Laboratories, 1975)
Recent test programs on Kings bury type tilting pad thrust bearings have altered application data and required the use of larger thrust bearing sizes with correspondingly larger oil flows and increased power loss. These ...
Fossil Energy: Advanced Power Systems
(Texas A&M University. Gas Turbine Laboratories, 1975)
The vast coal reserves of North America offer a potential source of energy far into the future. In the United States, coal represents 73 percent of the total known resources of fossil fuel, whereas petroleum, natural-gas ...
Using Modified Acoustic Emission Techniques For Machinery Condition Surveillance
(Texas A&M University. Gas Turbine Laboratories, 1978)
Acoustic emission is the release of high frequency sound energy in a material under strain. It is the result of microscopic changes in material structure and is associated with deformation and defect growth. Until about ...