An Improved Decision Making Grid Model to Identify Maintenance Strategies.

?aper:?f'25-O'

3aper: PE-23,:Q

A Mobile Application Architecture for
Measuring Shaft Misalignment

to ldentify
Maintenance strategies for small and
Medium Industries
A Decision Making Model

-

-

',,

Muhammad Suhaizan sulong, Azlianor Abdul Aziz,
Mohd shahir Kasim, Muhammad HafidzFazli Md Fauadi
Universiti Teknikal Malaysia Melaka,

Locked Bag 1200,75450 Ayer Keroh, Melaka, Malaysia
suhaiian@utem.edu.my and +606-233 2508

M.A. Burhanuddinl, A.R. Ahmad2, M'I' Desa3'
and Anton Satria Prabuwonoa
Faculw of Information and communication Technology,

UniversitiTeknika|Ma|aysiaMe|aka(UTeM),

Lccked Bag 1200, Ayer Keroh, 75450 Melaka, Malaysia
edu' my
{burhanuddi n, antonsatria}@utem'
2,3 Fakulti sistem Komputer dan Sistem Maklumat'
Universiti Teknologi Malaysia (UTM)'
81310 UTM Skudai, Johor, MalaYsia
{ahmadar, mishak}@utm.mY

in
Abstract-shaft alignment task is one of the important issues

Abstract- Rapid developments in computer -science have
contributed to the improvement of maintenance
= ;.ificantly
:':ctice and organization's competitiveness' Many available
have
:: :'1puterized maintenance management systems (CMMS)
:-'rently incorporated to a certain extend with a model based

:=:ision support capabilities. Among the promising maintenance
(DMG) model'
:ecrsion model used, is the Decision Making Grid
- lw€V€r, DMG consider only downtime and frequency of failures
:" machines as the maintenance strategy deciding factors' In
:^,s pdper, we propose an improved technique on DYG through
*corporating maintenance cost analysis to first identify machines
logic rules
:' candidates to be fitted into the DMG. Next , fuzzyrudimentary
Using a
factors.
the

combining
by
formed
be
-en
more
:3se study, the improved model is capable of generating
sensible maintenance strategies' For continuous maintenance
'tlprovement, we are also proposing the decision making model

:c embed with CMMS'

Paper:

Development of Pneumatically Actuated
stabil izer Bar to Reduce unwanted Motion
due to Asymmetric Road Disturbances
Mohd Sa|eh bin Mohamed, Khisbu||ah Hudha,
and Md Radzai Bin Said
Autotronics Lab - Department of Automotive,

Faculty of Mechanical Engineering'
Universiti Teknikal Malaysia Melaka (uTeM)'
Karung Berkunci 1200, Ayer Keroh, 75450 Melaka, Malaysia
E-mail : mssalez84@Yahoo.com.mY

Abstract-Assymmetric road disturbances are one of
comfort. This
environmental factors that will aftect vehicle ride
unwanted
the
reduce
can
that
system
new
paper proposes a

the

pneumatically

motion due to assymmetric road disturbances using
was on
simulation
The
(PAASB),
bar
stabilizer
active
actuated

7 degree of freedom full car model. The proposed controller
of vehicle
consists of 3 controlrer roops namely attitude control
disturbance
and
system
pneumatic
of
control
body, force tracking

proposed
rejection control. The results of the study show that the
pitching
vehicle
of
motion
unwanted
the
reduce
to
is
able
system
disturbances.
road
assymmetric
and rolling in the presence of

daily
manufacturing maintenance particularly to personnel who

as shaft
facing misalig"nment problem. rne importance increase
will
alignment needs high accuracy and precise measurement
loss, and
reduces bearing un| t.ul damage, minimizes energy
paper we- present an
reduces production downtime. Thus, in this
for shaft alignment
application
mobile
architecture in developing
gauges'
that could saves the user the arduous task of using dial
runs
that
problem
maintenance
engineering
The aim is to solve

solution
on a Personal Digitat Rssistant (PDA) and brings the
processing
itraight to the usEr,s fingertips. This would shorten
and aS a
analysis
accuracy
better
time, provide reliable and
level
medium for data sharing thus increase communication

within a manufacturing Plant'
Mobile''l'pplicatioru
Keywords : shaft,'llignment, Mobile,lrchitecture'
Maintenance

Paiper: PE-ad,'P,

Thermodynamic Approach to Determine

a Gas Turbine components Design Data
and Scaling Method for Performance Map
Generation
syed lhtsham-ul-Haq Gilani, Aklilu Tesfamichael Baheta,
Mohd. Amin A' Majid
Department of Mechanical Engineering'
Universiti Teknologi PETRONAS'
Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia
E-mail : syedihtsham@petronas.com'my

Fax: 006053656461

Abstract-A major impedimentto the development of componentdata'
based engine models is the lack of available component

These data are usually proprietary of the engine manufacturers
estimation
and the normally avaifable information is scanty. The
at best, a
remains,

map
performance
component
of the suitable
the
difficult task. where component performance is not available

compressor performance such
nearest method , of estimating-been
used successfully to model
has
as the scaling technique,
technique, the
the turbine and compressoti In using the scaling
lack of design
is
gas
turbine
existing
an

simulating
difficulty of
gives only
data available to the researcher, is the manufacturer
the plant.
of
operation
safe
for
required
data
minimum
bare
the
model
mathematically
to
difficult
very
is
without design data it
the design
the plant. Th6refore, this study illustrates how to find
basic
data with the minimum available information using the
produce a
thermodynamic laws and use of scaling method to
their
new detailed performance map from an existing map with
design data.
laws'
Keywords: Gas turbine, Performance n'tap, Thermodynamic
Scaling method