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8/12/2019 Aircraft Structural Monitoring System
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Designing an aircraftstructural health monitoring
system
2011-2012
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Structural health monitoring: A process of diagnosis and
monitoring condition of structuresnormally performed during anyoperation under various conditions.
A process of follow-up over changesin the condition of a structure.
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In Aerospace Applications..
A process of evaluating the integrityof targeted structural elements with the
goals to provide maintenance andownership benefits.
Damage Monitoring
Operational Monitoring
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law! aultDetection and
"ocation
law! ault#dentificatio
n
law! ault Assessmentlaw! aultMonitoring
$emaining"ifetime
%valuation!ailure
&rediction
Main Objectives of SHM
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Benefits for the present aviation industry
More efficient and effective maintenance Procedures with
substantially reduced downtime.
Substantial time savings approx by 4 ! to inspect structures
which are in difficult to access areas or in remote locations.
"ncreased Occupational health and safety benefits in
accessing structures
Provide the operator with information as to possible safefurther operation subse#uent to a mishap.
"mproved design efficiencies through the availability of
continual monitoring and are more reliable .
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Time BasedMaintenance
Conditionbased
Maintenance
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'o produce a comprehensive specificationsfor a practical development of ()Mdemonstrator by
Ac*uiring #nformation on the design andoperation of ()M systems.
#ndustrial access for practical +nowledge.
Auto,AD
Project Aim
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&rocedureDevelopment
(ensing
Diagnosis
Monitoring
&rediction
SHM Wor ing Process
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!ibre "#tic Sensor
Pie$oelectric transducers
Different equipmentsused in SHM
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est structural elementselection for ()M
application (tudy damagedetection characteristics of
the selected ()Mtechnologies
#dentify current inspectionre*uirements to be
replaced by the selected()M technology
Develop conceptual ()Mapplication to fulfil theidentified inspection
re*uirements
Operational analysis of thedeveloped ()M application
%valuate the ()Mapplication against current
inspection tas+
'echnology maturityassessment
SHM conceptual design process
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Com#onents to #rocess SHM
Operational %valuation
Data Ac*uisition usion and ,leansing
eature %/traction and #nformation
,ondensation
(tatistical-Model Development for eature
Discrimination
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'o nderstanding the mechanism for the crac+ growth
and wor+ing of sensors.
'o gain industrial access.
'o provide a detailed schematic layout of the
e/perimental system.
$esearch on the various ()M systems for critical
aspects.
Project objecti%es
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Final outcome
$eal time health monitoring
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Detect the defects and damage in the structure at si es smaller
than those currently assumed for design and certification
Alert the pilot!operator to in-flight incidents
%nable monitoring of the growth of defects and damage
$educe effective inspection intervals
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Constrains
'o gain industrial contacts.
Mathematical errors increases the
number of e/periments for the proposed
system.
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