This document provides an introduction to vibration, including:
1) A brief history of vibration studies from ancient times to modern finite element analysis.
2) Examples of unwanted vibration that can cause failures and discomfort, and examples of desirable vibration in musical instruments and medical/industrial applications.
3) Key concepts in vibration including degrees of freedom, discrete/continuous systems, free/forced vibration, damped/undamped vibration, linear/nonlinear vibration, and deterministic/random vibration.
4) An overview of the typical vibration analysis procedure including mathematical modeling, derivation of governing equations, solution of equations, and interpretation of results.
Introduction to Reliability Centered MaintenanceDibyendu De
Introduces Reliability Centered Maintenance, strategies employed, formulation of effective maintenance plan, reduction of consequences of failures and failure rate.
The following topics are covered: components of power distribution systems, fuses, padmounted transformers, pole mounted transformers, vault installed transformers, transformer stations protection, transformer connections, thermometers, pressure relief devices, restricted ground faults, differential protection current transformers connections, overexcitation, inrush current, percentage differential relays, gas relays, characteristics of CTs.
fundamentals & basics of pneumatic systemNitin Chand
This presentation shows
1)The evolution of the industrial technology.
2)Types of media used in industrial processes.
3) Difference advantages between pneumatics , hydraulics & electrical as a media
4) Brief of basic principals of pneumatic system.
Introduction to Reliability Centered MaintenanceDibyendu De
Introduces Reliability Centered Maintenance, strategies employed, formulation of effective maintenance plan, reduction of consequences of failures and failure rate.
The following topics are covered: components of power distribution systems, fuses, padmounted transformers, pole mounted transformers, vault installed transformers, transformer stations protection, transformer connections, thermometers, pressure relief devices, restricted ground faults, differential protection current transformers connections, overexcitation, inrush current, percentage differential relays, gas relays, characteristics of CTs.
fundamentals & basics of pneumatic systemNitin Chand
This presentation shows
1)The evolution of the industrial technology.
2)Types of media used in industrial processes.
3) Difference advantages between pneumatics , hydraulics & electrical as a media
4) Brief of basic principals of pneumatic system.
Reliability Centered Maintenance Implementation and Case StudyWaseem Akram
This is the presentation based on final year project which deals with the implementation of "Reliability Centered Maintenance and Contribution of Quality Management System". A case study analysis has also been attached in this presentation.
EQUIPMENT FOR EXTINGUISHER & CYLINDER MAINTENANCE AND TESTING / CLEAN AGENT H...marketingequipment
Company presentation featuring a wide a range of equipment for extinguisher and cylinder maintenance, service and testing. We produce units for CO2 transfer, powder extinguisher filling, cylinder maintenance and testing, clean agent filling and recovery, inert gas filling, refrigerant filling. Our product range is fully designed and produced at our headuarters in North-West Italy.
This relates to a series of posts on Vibration Analysis. The purpose is education of engineers and managers to effectively improve availability, reliability and performance of their manufacturing plants and improve profitability of their business
Vibration analysis can provide very useful information about the status of the equipment and the nature and severity of the problem.
It is possible to use these information to plan all maintenance activities and minimize machine downtime.
NDT-Nondestructive testing is the process of inspecting, testing, or evaluating materials, components or assemblies for discontinuities, or differences in characteristics without destroying the serviceability of the part or system. In other words, when the inspection or test is completed the part can still be used.
Reliability Centered Maintenance Implementation and Case StudyWaseem Akram
This is the presentation based on final year project which deals with the implementation of "Reliability Centered Maintenance and Contribution of Quality Management System". A case study analysis has also been attached in this presentation.
EQUIPMENT FOR EXTINGUISHER & CYLINDER MAINTENANCE AND TESTING / CLEAN AGENT H...marketingequipment
Company presentation featuring a wide a range of equipment for extinguisher and cylinder maintenance, service and testing. We produce units for CO2 transfer, powder extinguisher filling, cylinder maintenance and testing, clean agent filling and recovery, inert gas filling, refrigerant filling. Our product range is fully designed and produced at our headuarters in North-West Italy.
This relates to a series of posts on Vibration Analysis. The purpose is education of engineers and managers to effectively improve availability, reliability and performance of their manufacturing plants and improve profitability of their business
Vibration analysis can provide very useful information about the status of the equipment and the nature and severity of the problem.
It is possible to use these information to plan all maintenance activities and minimize machine downtime.
NDT-Nondestructive testing is the process of inspecting, testing, or evaluating materials, components or assemblies for discontinuities, or differences in characteristics without destroying the serviceability of the part or system. In other words, when the inspection or test is completed the part can still be used.
This presentation gives an introduction to mechanical vibration or Theory of Vibration for BE courses. Presentation is prepared as per the syllabus of VTU.For any suggestions and criticisms please mail to: hareeshang@gmail.com or visit:ww.hareeshang.wikifoundry.com.
Thanks for watching this presentation.
Hareesha N G
Er. Muhammad Zaroon Shakeel
Vibration Analysis Lectures
Book : S.S.RAO
Department of Mechanical Engineering
Faculty of Engineering (FOE)
University of Central Punjab - Lahore
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Tutorial for 16S rRNA Gene Analysis with QIIME2.pdf
1-intro to vibration 1.pptx
1. KIG3003 Mechanics of Machines
and Vibration
Lecture 1: Introduction to vibration
(Part 1)
Prepared by
mfsoong
2. Where we are
Week Topic Week Topic
1 Fundamentals of vibration 8 Vibration under general force
Response under general periodic force
2 Free vibration of 1-DOF systems
Undamped translational & rotational
systems
9 Vibration under general force
Response under non-periodic force
3 Free vibration of 1-DOF systems
Damped translational & rotational
systems
10 Laplace transform
4 Characteristic roots and
corresponding solutions
11 2-DOF systems
Free & forced vibration of undamped
systems
5 Harmonic excitation
Response of undamped & damped
systems
12 2-DOF systems
Coordinate coupling & principal
coordinates
6 Harmonic excitation
Base excitation & rotating unbalance
13 Multi-DOF systems
Equations of motion in matrix form
7 Frequency transfer functions 14 Multi-DOF systems
Modal analysis of forced vibration
3. What is vibration?
• Any motion that repeats itself after an interval of time =
vibration, oscillation
• Mechanical vibration:
• Consists of 3 elements
Mass / Inertia
Stiffness
Damping “mass-spring-damper” system
• Involves transfer of kinetic energy potential energy
• study of oscillatory motions of bodies and the forces
associated with them
4. History of vibration
• People became aware of vibration – musical instruments,
but did not study it scientifically
• 582 – 507 B.C: Pythagoras – conducted experiments on a
vibrating string – monochord – developed concept of pitch
• Observed that if two like strings of different lengths are
subject to the same tension, the shorter one emits a higher
note
5. History of vibration
• 350 B.C. – Aristotle wrote
treatises on music and
sound
• 320 B.C. – Aristoxenus
wrote a three-volume work
entitled ‘Elements of
Harmony’
• 300 B.C. – Euclid wrote a
treatises ‘Introduction to
Harmonics’
• A.D. 132 – Zhang Heng
invented the world’s first
seismograph to measure
earthquakes:
6. History of vibration
• More scientific studies
started from Galileo Galilei
(1564 – 1642):
• Experimenting simple
pendulum
• published ‘Discourses
Concerning Two New
Sciences’ (1638); described
resonance, frequency,
length, tension & density of
a vibrating stretched string
Lagrange, Poisson, Rayleigh,
……, until modern times
• Robert Hooke (1635 – 1703)
– relation btw pitch and
frequency of string
vibration
• Joseph Sauveur (1653 –
1716) – acoustic
• Newton’s (1642 – 1727)
three laws of motion
7. History of vibration
• 1950s
• Beginning of high-speed digital computers - possible to treat
moderately complex systems & to generate approximate solutions
• Turner, Clough, Martin and Topp presented the finite element
method as known today
• Finite element method enabled engineers to use digital
computers to conduct numerically detailed vibration
analysis of complex mechanical, vehicular, and structural
systems displaying thousands of degrees of freedom
8. Importance of studying vibration
• Early times
• To understand natural
phenomena – develop math
theories to describe system
• Recent times
• Focus on engineering
applications – design of
systems
• There are also good uses of
vibration
• Vibrations lead to excessive
deflections and failure on
machines and structures:
• To reduce vibration through
proper design of machines
and their mountings
9. Examples of vibration (unwanted)
• Failures in machine and
structures, e.g. fatigue
• Discomfort due to noise &
vibration – road vehicles
• Motion sickness – various
transportations
• Earthquakes
10. Example of vibration (desirable)
• Musical instruments: guitar – string; drum – membrane; etc.
• Medical – e.g. high frequency vibration probe for heart
disease treatment (www.flowcardia.com)
• Vibration test rig / shakers – scientific studies, product R&D
• Industrial / consumer products:
11. Basic concepts:
What is vibration?
• Any motion that repeats itself after an interval of time =
vibration, oscillation
• Mechanical vibration:
• Consists of 3 elements
Mass / Inertia
Stiffness
Damping
• Transfer of kinetic energy potential energy
• There are other kinds of system with oscillatory response:
electrical RLC circuit – elec-mech analogy
Must it always be
single-object?
12. Basic concepts:
Degrees of freedom
• Minimum number of independent coordinates required to
determine completely the positions of all parts of a system
at any instant of time
1-DOF systems
2-DOF systems
More DOFs?
13. Basic concepts:
Discrete & continuous systems
• Many practical systems can be described using a finite
number of DOFs – discrete or lumped parameter systems
• E.g. representation of passenger car with suspension system
• Rigid body vibration
• Some systems with elastic members have infinite number of
DOFs – continuous or distributed systems
• E.g. structural or machine systems that have deformable members
• Elastic body vibration
• Approximate as discrete: ↑ DOFs ↑ accuracy
14. Basic concepts:
Free & forced vibrations
• If a system, after an initial
disturbance, is left to
vibrate on its own, the
ensuing vibration is known
as free vibration
• No external force
• If a system is subjected to
an external force, the
resulting vibration is known
as forced vibration
• Force can be any type,
usually repeating (periodic)
15. Basic concepts:
Undamped & damped vibrations
• Undamped vibration:
• No energy is lost or dissipated in friction or other resistance during
oscillation
• Damped vibration:
• Energy is dissipated from the system, motion gradually decreases
• Practically, damping is present in vibrating systems;
becomes important in vibration near resonance
16. Basic concepts:
Linear & non-linear vibrations
• If all basic components of a
vibratory system behave
linearly, the resulting
vibration is known as linear
vibration
• If any of the basic
components behave
nonlinearly, the vibration is
called nonlinear vibration
17. Basic concepts:
Deterministic & random vibration
• Deterministic vibration:
• If the value or magnitude of the excitation (force or motion) is
known at any given time, the vibration is called deterministic
• Nondeterministic or random vibration:
• If the excitation is random, this results in nondeterministic vibration
18. Vibration analysis procedure
(1) Mathematical modeling
Represent all the important
features of a system to get
math equations governing the
system’s behavior
(3) Solution of the governing
equations
Use math techniques (e.g.
Laplace) to solve differential
equations to get response of
vibrating system; complex
systems – numerical solutions
(2) Derivation of governing
equations
Use principles of dynamics
with the aid of free-body
diagram; usually obtain
differential equations: e.g.
Newton’s laws, Principle of
conservation of energy,
D’Alembert’s principle
(4) Interpretation of the
results
19. Example of modeling
• Forging hammer:
Extent of modeling depends
on desired accuracy &
computational simplicity