Vibration Fundamentals serves to demystify the subject of vibration. The course starts with an overview of vibration terminology and the physical nature of vibration. Vibration instrumentation and how it is used for data collection and analysis is reviewed. The course then shifts to an in-depth discussion of diagnosing machinery faults using vibration. The broad range of learning objectives is complemented with real-world examples through focused case studies.

Learning Outcomes:

• Define basic vibration terminology
• Understand vibration spectra and waveforms, including the concepts of frequency, amplitude, and phase
• Identify methods of vibration data collection using varied instrumentation
• Apply vibration analysis techniques to diagnose machinery faults
• Understand the basic theory behind natural frequencies and resonance

Who Should Attend?

Engineers
Maintenance Professionals
Operations Professionals
Managers

Knowledge Level:

Introductory

Completion Certificate:

10 PDH

Chapter Summaries:

CHAPTER 1: INTRODUCTION TO MACHINE VIBRATIONS

This chapter explores vibrations in mechanical systems, detailing their physical characteristics and fundamental parameters such as frequency, amplitude, period, and phase. It introduces the vibration spectrum for energy distribution analysis across frequencies. Techniques for spectral resolution are discussed, offering essential tools for effective vibration analysis.

CHAPTER 2: VIBRATION ANALYSIS METHODS

This chapter provides an overview of vibration analysis. It covers essential measures like displacement, velocity, and acceleration, emphasizing their roles in diagnosing machinery health. Additionally, the chapter explores instrumentation methods such as transducers, crucial for accurate vibration data collection, and highlights optimal measurement locations.

CHAPTER 3: FAULT FREQUENCY ANALYSIS - USING THE FFT

This chapter delves into vibration faults, pinpointing common causes such as misalignment and imbalance. It provides a systematic approach for diagnosing and mitigating these faults, offering practical strategies for effective maintenance and operation. Additionally, the chapter introduces fault frequency analysis as a powerful tool for identifying underlying issues.

CHAPTER 4: FAULT FREQUENCY ANALYSIS - MECHANICAL FAULTS

This chapter focuses on identifying common mechanical faults essential to maintaining operational integrity. It explores case studies involving structural and rotating looseness, offering insights into their causes and diagnostic procedures. The chapter further delves into the intricacies of rolling bearing faults, outlining their failure paths and effective methods for identification.

CHAPTER 5: FAULT FREQUENCY ANALYSIS - PUMP, GEARBOX, AND MOTOR

This chapter provides an overview of critical issues such as soft foot, bent shaft, and cocked bearing, detailing their causes and implications for pump performance. It also explores a range of vibration faults including those in journal bearings, gearboxes, and motors, underscoring their impact on reliability and efficiency. Additionally, the chapter explains the concept of beat frequency.

CHAPTER 6: NATURAL FREQUENCY AND RESONANCE

This chapter delves into vibration frequencies in mechanical systems, particularly natural frequencies and resonance, essential for understanding pump dynamics. It explores their occurrence and importance in evaluating structural health and operational efficiency. Additionally, the chapter outlines effective strategies to address resonance.

CHAPTER 7: OPERATING DEFLECTION SHAPE ANALYSIS

This chapter provides a detailed exploration of vibration solution and analysis methods, focusing on key techniques such as operating deflection shape and modal analysis. It elucidates how these methods address various vibration problems encountered in mechanical systems. It also discusses motion amplification and its crucial role in enhancing the accuracy of vibration analysis.

CHAPTER 8: REVIEW TOPICS OF MACHINE VIBRATION

This chapter serves as a comprehensive review of previously discussed topics, focusing on fundamental aspects such as the nature of vibrations, measures of vibration, and common vibration faults in mechanical systems. Additionally, the chapter outlines methods for vibration solution and analysis, detailing approaches like operating deflection shape and modal analysis. It also addresses overall acceptable vibration levels critical for maintaining optimal performance and reliability.