Mechanical Basics MECHANICAL VIBRATIONS

Condition Monitoring:Structure, Uses, Issues and Types of maintenance,Machine Fault Signature

Condition Monitoring: Structure, Uses, Issues, and Types of maintenance, Machine Fault Signature:
Condition monitoring is the process of monitoring a parameter of condition in machinery (vibration, temperature, etc.), in order to identify a significant change which is indicative of a developing fault is called Condition Monitoring.

Introduction to Condition Monitoring

 Introduction to Condition Monitoring:

  • What is a machine?
  • What is Life cycle cost ownership?
  • Why machine health gets affected?
  • What is Bath Tub Curve and what is its importance?
  • Failure data results
  • Aging of moving components
  • Healthy machine requirement
  • What happens when oil films break?
  • What is a sick machine?
  • What are the symptoms of a sick machine? 

Explanation:

    • It is a major component of predictive maintenance.
    • The use of condition monitoring allows maintenance to be scheduled or other actions to be taken to prevent failure and avoid its consequences.
    • Condition monitoring has a unique benefit in that conditions that would shorten normal lifespan can be addressed before they develop into a major failure.
    • Condition monitoring techniques are normally used on rotating equipment and other machinery (pumps, internal combustion engines, presses).
    • While periodic inspection uses non-destructive testing techniques and fit for service (FFS) evaluation which is used for stationary plant equipment such as steam boilers, piping and heat exchangers.

Active Control Structure of Condition Monitoring:

The Active Control Structure consists of PLC, Control room, OPC, Controllers/Servers, Network hubs etc. In this article, I am going to publish What is the Active Control Structure of Condition Monitoring i.e. working of a machine under the control of computers in a detailed manner.

active control structure of monitoring

Explanation:

  • It can detect machinery problems if the system is 
    • Unbalance
    • Misalignment
    • Looseness
    • Shaft cracks
    • Oil whirl
    • Phase
    • Rubs
    • Gear and bearing problems
  • Pass information to DCS plant information systems via OPC
    • Use existing plant LAN Ethernet infrastructure
  • Confirmation of mechanical conditions to reach plant for planned shutdown or remedy
    • Fix what is ‘broke’ before failure.
This is the complete explanation of Active Control Structure of Condition Monitoring. Now, we can discuss the Uses, Issues, and Types of maintenance.

Uses, Issues, and Types of maintenance in Condition Monitoring:

Types of maintenance in Condition Monitoring

Uses:

    • The use of Condition Monitoring allows maintenance to be scheduled or other actions to be taken to avoid the consequences of failure before the failure occurs.
    • Machines with defects are more at risk of failure than defect-free machines. Once a defect has been identified then it is very easy to solve the problem.
    • It can only measure the deterioration of the condition.

Types of Maintenance:

    • Periodic Preventive Maintenance
    • Predictive Maintenance
    • Proactive Maintenance
    • Reactive Maintenance
condition monitoring
condition monitoring

Issues of Monitoring:

    • The criticality of inspected part/machine/process
    • The sensitivity of faults-parameter to monitor
    • Offline Inspections/Online Inspections
    • Optimum inspection Interval.

All the other aspects are presented below in the form of video and is as follows.

This is the complete explanation of the Uses, Issues, and Types of maintenance. If you have any doubts, feel free to ask from the comments section. Please Share and Like this blog with the whole world so that it can reach to many.


Machine Fault Signature and its Detection Techniques:

Machine Fault can be defined as any change in machinery part or component which makes it unable to perform its function satisfactorily is called a machine fault. In this article, I am going to publish What is Machine Fault Signature and its Detection Techniques in a detailed manner.

Other Details of Machine Fault Signature and its Detection Techniques

 Objectives of Machine Fault Signature and its Detection Techniques:

    • Prevention of future failure events.
    • Assurance of reliability, maintenance, and safety of machinery.

Machinery problems or failures are due to:

  • Misalignment
  • Looseness
  • Shaft cracks
  • Oil whirl
  • Unbalance
  • phase
  • rubs
  • Gear and Bearing Problems.

Failure Occurences:

    • An inherent weakness in material, manufacturing, and design.
    • Gradual deterioration due to Wear,Tear,Stress,Fatigue,Corrosion etc.
    • Misuse or applying stress in an undesired direction.
    • Detection Techniques:

      The detection techniques are shown below and are as follows.

      1.Visual Inspection
      2.Aural
      3.Wear debris
      4.Operation variables,Temperature         
      Visual Inspection:
    • Cost-effective
    • optical assistance
    • Low-cost aides e.g Fibre scope etc.

Like This Article…Share it

Save

Save

Save

Save

Save

Save

 

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.