A SURVEY OF AEROSPACE MATERIALS AND DESIGN FOR AIRWORTHINESS COMPETABILITY AND PRODUCT LIFE CYCLE SUSTAINABILITY

mammettiredMechanics

Nov 18, 2013 (3 years and 4 months ago)

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A SURVEY OF AEROSPACE MATERIALS AND DESIGN FOR AIRWORTHINESS
COMPETABILITY AND PRODUCT LIFE CYCLE SUSTAINABILITY


Dr. Yıldırım Kemal Yıllıkçı
*
,

mrçfK

䑲K 䙥Fim䙩nd楫
**
,
UgurCelikyay
***
and Ad
nan
Golu
bovic
***
*

*
The Permanent Mission of Turkey to ICAO
,
Montreal, Canada

(+1 514 833 8587; E
-
mail:ykyillikci@mfa.gov.tr)

**
International University of Sarajevo, Bosnia
-
Herzegovina

(+
387

62 621 229

; E
-
mail:f
findik@ius.edu.ba)

***
Turkish Technic EASA21J.418 Design Organization, Airworthiness Manager

(
+1 387
E
-
m
ail:
ucelikyay
@
thy.com
)

***
*
Tensor Technologies Inc. Sarajevo, Bosnia
-
Herzegovina

(
+1 387
E
-
mail:
adnan.golubovic
@
tensorcontinua.com
)



New developments in materials science and its technologies find best areas of implementation in aerospace. Since the dawn of
the
powered flight, primarily airplanes with airframes
developed

and built
by l
ight, durable and affordable materials through
intel
ligent
designs

made step improvements
. Besides challenge to develop more efficient engines
both by reducing weight and
improving aero
-
thermodynam
ic properties
with much higher reliability along with very stringent environ
mental protection
requirements, increasing mandating designers to search and use for

advanced alloys, coatings and manufacturing processes
lighter, stronger and durable materials
.
In this study a

review of current trends and future expectations in material

technologies
; for
lighter airframes, aircraft systems and engines primarily in the fields of
Carbon Nanotubes, Super Alloys, Fiber Metal Laminates,
Ceramic Materials, Coating Technologies and Smart

Materials.



Availability of advanced materials would no
t be enough to utilize them successfully and affordably and Integrated Product and
Process Design (IPPD)
and Concurrent Engineering (CE)
disciplines are now well establish for designers who are ready rigorous
design iterations. As being the second part of
this study; Technology Readiness Levels (TRLs) requirements for
aerospace systems

designs which are also must be answer very demanding mission performance expectations, comply with stringent airworthiness
certification requirements as

well as to as
sure com
mercial success through
out their expected product life cycles.


Study also present approaches for Designing for Fatigue and Damage Tolerance starting with its basic criteria for which the
aircraft structure would be designed and certified to ensure compli
ance with airworthiness requirement, including durability,
inspection interval and threshold, frequent buckling and reparability of the structure. Allowable stresses are generated by

analysis
supported by rigorous test evidences by the design teams
. For
the durability criterion, the structure must be designed to
demonstrate sufficiently high fatigue endurance throughout its Design Service
Goal (DSG) to achieve two durability of the
structure and minimize the number of areas prone to fatigue damage.


Auth
or attempt to give an informative survey for advanced aerospace materials

throughout their
; research and development stages,

concurrent design iterations as well the assurance of the continued airworthiness of product throughout its service life.


Keywords:
Advanced Materials, Aerospace Structures
,
Airworthiness Regulations
, Surrogate Models,
Concurrent Engineering