SpectraQuest provides technical notes to increase your knowledge in machinery fault and diagnosis. Most of the tech notes gathered data using SpectraQuest's own simulators and data acquisition systems.

Review of Bearings and Gearbox Diagnostics - Presented at IMAC, Feb.3 , 2010 NEW

Gearbox Diagnostics

1. Vibration Signature of Defected Gear Tooth Using Spectral Analysis
2. Analyzing Gearbox Degradation Using Time-Frequency Signature Analysis
3. Numerical Simulation of the Propagation of a Crack in Gearbox

Rolling Element Bearings

1. Transient Response of Rotor on Rolling Element Bearings with Clearance
2. A Study of Rolling Element bearing Defect Analysis
3. Some Observations of Detection of Rolling Element Bearing Outer Race Fault
4. Semi-Automated Bearing Diagnostics - Three Case Studies
5. Diagnosis of Rolling Element Bearing Faults using Envelope Analysis
6. The Effect of Frequency Resolution in Bearing Fault Studies NEW

Condition Monitoring Technology

1. State of the Art in Monitoring Rotating Machinery-Part 1

Journal Bearings

1. Effects of Clearance on Damping in Fluid Film Bearing
2. Interesting Rotor Dynamics Observations on Oil Whirl and Whip
3. Dynamic behaviors of Rotor with Fluid Film Journal & Rolling Element Bearings

Unbalance

1. Vibration Signature of Overhung Rotor with Unknown Initial Conditions

Rotor Misalignment

1. Misalignment Detection Using ODS
2. Observations Concerning Misalignment Vibration Signatures
3. Using ODSs to Detect Shaft Misalignment in Rotating Equipment
4. Observations of Dynamic Responses of Misalignments

Torsional Vibration

1. Torsional Vibration Simulation Using a Universal Joint

Pumps

1. Air Bubble and Cavitations Vibration Signatures of a Centrifugal Pump

Signal Processing

1. Rotating Machinery Faulty Diagnosis Techniques- Envelope and Cepstrum Analyses
2. Applications of Time-Frequency Analysis Techniques on Machinery Fault Diagnosis

Bent Shaft

1. Vibration and Force Signatures of Bent Shaft

Belts

1. Vibration Analysis of Belt Drives in Rotating Machinery
2. Correlation between Belt Natural Frequencies and Vibration Spectra
3. A Study of Belt Natural Frequency

Motor Diagnostics & MCSA

1. Diagnostics of Induction Motor with Broken Bars Using Motor Current Signature Analysis
2. White Paper on Motor Current Signature Analysis

Rotordynamics

1. Rotor Dynamic Analysis Using XLRotor
2. Critical Speeds in Rotating Machinery

Mechanical Rub

1. The Effects of Shaft Rub on bearing Housing Vibration Signatures

Fans

1. Vibration Signal Analysis of Fan Rotors

Crack Shaft

1. Simulation and Vibration Analysis of Shaft Cracks

Compressor

1. Vibration Signatures of Reciprocating Compressors

Miscellaneous

1. VibroMet 500V: Single Point Laser Doppler Vibrometer
2. A constitutive Equation for Thermoviscoelastic Behavior of Polymeric Materials

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