The document discusses basics of vibration including characteristics like amplitude, frequency, and phase. It describes common vibration pickups like proximity probes, velocity pickups, and accelerometers and criteria for selecting them. Methods of vibration measurement are presented along with units of vibration. Tips are provided for making vibration data useful and steps to resolve vibration problems are outlined. Standards for vibration limits on bearings and shafts are also mentioned.
Machinery Vibration Analysis and Maintenance Living Online
This practical workshop provides a detailed examination of the detection, location and diagnosis of faults in rotating and reciprocating machinery using vibration analysis. The basics and underlying physics of vibration signals are first examined. The acquisition and processing of signals is reviewed followed by a discussion of machinery fault diagnosis using vibration analysis, and rectifying the unidentified faults. The workshop is concluded by a review of the other techniques of predictive maintenance such as oil and particle analysis, ultrasound and infrared thermography. The latest approaches and equipment used together with current research techniques in vibration analysis are also highlighted in the workshop.
MORE INFORMATION: http://www.idc-online.com/content/practical-machinery-vibration-analysis-and-predictive-maintenance-11
Machinery Vibration Analysis and Maintenance Living Online
This practical workshop provides a detailed examination of the detection, location and diagnosis of faults in rotating and reciprocating machinery using vibration analysis. The basics and underlying physics of vibration signals are first examined. The acquisition and processing of signals is reviewed followed by a discussion of machinery fault diagnosis using vibration analysis, and rectifying the unidentified faults. The workshop is concluded by a review of the other techniques of predictive maintenance such as oil and particle analysis, ultrasound and infrared thermography. The latest approaches and equipment used together with current research techniques in vibration analysis are also highlighted in the workshop.
MORE INFORMATION: http://www.idc-online.com/content/practical-machinery-vibration-analysis-and-predictive-maintenance-11
it is related to the subject dynamics of machinery in that measurement of vibration, instrument used for vibration measurement, control of vibration and related part is covered
This presentation is equipped with the basic concepts of Condition Monitoring. The methods and analysis, circumscribed by Condition Monitoring, are summarized with an addition of application in this presentation.
this slide deals with the basic concepts related to mechanical vibrations for more information you can go through any mechanical vibration book available for engineering students
Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The word comes from Latin vibrationem ("shaking, brandishing"). The oscillations may be periodic, such as the motion of a pendulum—or random, such as the movement of a tire on a gravel road. here in this Presentation we can understand various vibration measurement instruments and their principals.
A basic understanding of Vibration analysis of machinery and structures. I prepared this slides for one of my training for clients in the military many years back. Its not updated yet, but gives readers idea of the practical fundamentals of vibration analysis.
A practical approach to bump test, learn why and how to perform bump test, when machine is off or if machine is running, equipment used for this session is CSI 2130 and CSI 2140, these are the universal setting and can be used for any of vibration analyzers such as SKF, SPM, Timken, Pruif Technique or any data acquisition unit having the option of bump test.
it is related to the subject dynamics of machinery in that measurement of vibration, instrument used for vibration measurement, control of vibration and related part is covered
This presentation is equipped with the basic concepts of Condition Monitoring. The methods and analysis, circumscribed by Condition Monitoring, are summarized with an addition of application in this presentation.
this slide deals with the basic concepts related to mechanical vibrations for more information you can go through any mechanical vibration book available for engineering students
Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The word comes from Latin vibrationem ("shaking, brandishing"). The oscillations may be periodic, such as the motion of a pendulum—or random, such as the movement of a tire on a gravel road. here in this Presentation we can understand various vibration measurement instruments and their principals.
A basic understanding of Vibration analysis of machinery and structures. I prepared this slides for one of my training for clients in the military many years back. Its not updated yet, but gives readers idea of the practical fundamentals of vibration analysis.
A practical approach to bump test, learn why and how to perform bump test, when machine is off or if machine is running, equipment used for this session is CSI 2130 and CSI 2140, these are the universal setting and can be used for any of vibration analyzers such as SKF, SPM, Timken, Pruif Technique or any data acquisition unit having the option of bump test.
Ethnobotany and Ethnopharmacology:
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New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
4. TYPES OF VIBRATION PICK UP
PROXIMITY PROBE
VELOCITY PICK UP
ACCELEROMETER
5. CRITERIA FOR SELECTION OF VARIOUS
TYPES OF VIBRATION PICK UP
PROXIMITY PROBE
SHAFT VIBRATION MEASUREMENT
KEY PHASER MARKER
SHAFT CENTRE LINE POSITION
BEST SUITED FOR 1 TO 500 HZ
VELOCITY PICK UP
FOR BEARING AND STRUCTURAL VIBRATION
BEST SUITED FOR 10 TO 1000 HZ
6. CRITERIA FOR SELECTION OF VARIOUS
TYPES OF VIBRATION PICK UP
ACCELEROMETER
FOR HIGH FREQUENCY RANGE
BEST SUITED FOR 1000 HZ ONWARDS
7. UNITS OF VIBRATION
(A) DISPLACEMENT
MICRONS, PEAK TO PEAK
MICRONS, 0 TO PEAK
MICRONS, RMS
(B) VELOCITY
MM/SEC, 0 TO PEAK
MM/SEC, RMS
(C)ACCELERATION
M/SEC2, PEAK
M/SEC2, RMS
G, PEAK
G, RMS
8. Average
RMS 0 - Peak
Peak - Peak
UNITS OF VIBRATION
RMS = 0.707 x (0-Peak)
Average = 0.637 x (0-Peak)
Peak to Peak = 2 x (0-Peak)
11. TIPS FOR MAKING VIBRATION DATA MORE
USEFUL FOR ANALYSIS
LOCATION OF VIBRATION PICK UPS TO BE INDICATED
LOCATION OF PHOTOCELL TO BE INDICATED
DIRECTION OF ROTATION SHOULD BE INDICATED
KEY PHASER MARK ON ROTOR POSITION TO BE INDICATED
AXIAL VIBRATION PHASE LOGGING MUST HAVE DIRECTION
INDICATION
NAME OF VIBRATION ANLAYSER SHOULD BE INDICATED
VIBRATION UNITS TO BE INDICATED
12. TIPS FOR MAKING VIBRATION DATA MORE
USEFUL FOR ANALYSIS
WHILE GIVING CONTROL ROOM VALUES, SPECIFY THE
VIBRATION UNITS AND LOCATION OF THE PICKUPS
VIBRATION MUST BE MEASURED BY PORTABLE VIBRATION
METER NEAR CONTROL ROOM PICKUP FOR VARYING THE
CORRECTNESS OF CONTROL ROOM MEASUREMENT
PICK UP SHOULD NOT BE MOUNTED LOOSE
BRACKET FOR EXTERNAL SHAFT VIBRATION PICKUP SHOULD BE
STIFF ENOUGH NOT TO PRODUCE AMPLIFICATION / RESONANCE
13. TIPS FOR MAKING VIBRATION DATA MORE
USEFUL FOR ANALYSIS
FOR CORRECT TRENDING OF VIBRATION READINGS, SAME
LOCATION SHOULD BE USED FOR ALL PERIODIC
MEASUREMENTS
14. REASONS OF VIBRATION
IF THE MEASUREMENT IS HEALTHY, FOLLOWING MAY BE THE
REASONS OF VIBRATION PROBLEM
UNBALANCE
MISALIGNMENT
LOOSENESS
PIPE PULLS
SHAFT CATENARY / BEARING LOADING
RESONANCE
UNEQUAL FLOW PATH CLEARANCES
RUBBING
15. REASONS OF VIBRATION
SHAFT BOW
OIL / STEAM WHIRL
DEVIATED OPERATING PARAMETERS
DEFECTIVE BEARING / ASSEMBLY OF BEARING
VIBRATION TRANSMITTION FROM OTHER SOURCE
GEAR INACCURACIES
CASING DISTORSTION
CAVITATION
16. STEPS FOR RESOLVING THE VIBRATION
PROBLEM
ACCURATE MEASUREMENT OF VIBRATION DATA
COLLECTION OF OPERATING PARAMETERS
STUDY OF HISTORY OF VIBRATION BEHAVIOUR / OVERHAULING
REPORTS / RECURRING PROBLEM FACED
INTERACTION WITH O&M PERSONNELS
COLLECTION OF DETAILED VIBRATION BEHAVIOUR AT VARIOUS
CONDITIONS OF OPERATION LIKE NO LOAD RUN, RUN UP, RUN
DOWN, WITH AND WITHOUT EXCITATION, PART AND FULL LOAD
OPERATION ETC.
VIBRATION ANALYSIS TO NARROW DOWN THE REASONS OF
HIGH VIBRATION
17. STEPS FOR RESOLVING THE VIBRATION
PROBLEM
FORMULATION OF ACTION PLAN (SHORT TERM / LONG TERM)
IMPLEMENTATION OF ACTION PLAN
RESPONSE OF MACHINE AFTER IMPLEMENTATION OF ACTION
PLAN
FRESH VIBRATION ANALYSIS, IF THE PROBLEM PERSISTS
IMPLEMENTATION OF NEW ACTION PLAN
THE CYCLE OF VIBRATION ANALYSIS AND IMPLEMENTATION
OF ACTION PLAN CONTINUES TILL THE VIBRATION PROBLEM
IS SATISFACTORILY RESOLVED
18. KNOW YOUR MACHINES
KNOWLEDGE OF BEHAVIOUR FOR SIMILAR TYPE OF MACHINES
VIBRATION PRONE AREAS
INFLUENCE OF PARTICULAR OPERATING PARAMETER
19. INTERNATIONAL STANDARDS ON VIBRATION
ISO 10816 BEARING VIBRATION
ISO 7919 SHAFT VIBRATION
THERE ARE THREE LIMITS IN INTERNATIONAL STANDARDS
LIMITS FOR NEW MACHINES
ALARM LIMITS
TRIP LIMITS