Download - Air Jet Erosin
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AIR JET EROSION STUDIES ON
AL6061 COMPOSITES
TEAM MEMBERS:-
KUMAR SAHEB (1PI10ME061)
MANOJ KUMAR RAJPUT
(1PI10ME065)
PROJECT GUIDE:-
Dr C.S RAMESH
(PROFESSOR,DEPARTMENT OF
MECHANICAL ENGINEERING,PESIT)
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AIM OF THE PROJECT:-
TO MINIMISE AND LOOK FOR A BETTER
SOLUTION TO AIR JET EROSIONPHENOMENON
BY DEVELOPMENT OF SUITABLE METALMATRIX COMPOSITE.
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WHERE IS AIR JET EROSION
COMMON ?
Some practical examples:-
It is very commonly seen that whena plane takes off or while landing ,
due to high velocity of the plane,
the sand particles hit the lower part
of the plane , leading to its erosion
with time.
In thermal power plants , with theproduction of byproduct , theres
also formation of fly ash . This fly
ash combined with high
temperature and velocity will erode
the exhaust tubes.
Military aircrafts operating indeserts areas are constantly in
contact of eroding sand particles
and sand dunes which destroys
and weaken its outer surface with
time.
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A eroded part of an aircraft due to air jet erosion
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WHAT IS AIR JET EROSION TEST ?
The Air Jet Erosion Test is used to test the erosion resistance of solid
materials to a stream of gas containing abrasive particulate.
The test is performed by propelling a stream of abrasive particulate gas
through a small nozzle of known orifice diameter toward the test sample.
Material loss, in this case, is achieved via the impingement of small abrasiveparticles upon the surface of the test sample.
Materials such as metals, ceramics, minerals, polymers, composites,
abrasives, and coatings can be tested with this instrument.
The test specimen, temperature, angle of incidence of the jet stream,
abrasive particulate speed and flux density, can be varied to best simulateactual conditions.
Special adapters are available to test various geometries and components for
user-specified testing applications. The instrument can be configured to test
as per ASTM G76 specifications
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Air Jet erosion test
Rig as per ASTM G76
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WHY HAVE WE CHOSEN
COMPOSITE ?
Many of our modern technology require material with unusual combination of
properties that cannot be met by conventional metal alloy, ceramics and
polymers .
This is especially true for material that are needed for aerospace ,under water ,
and transportation applications. For example , aircraft engineers areincreasingly searching for structural material that have low density , are strong ,
stiff and abrasion and impact resistant, and are not easily corroded .
Achieving this is relatively difficult task owing to the fact that strong material are
relatively dense and also with increasing stiffness , impact strength decreases .
A composite , in the present context , is a multiphase material that is artificiallymade , as apposed to one that occurs or forms naturally . In addition , the
constituent phases must be chemically dissimilar and separated by a distinct
interface. Thus most metallic alloy and many ceramics do not fit this definition
because their multiple phase are formed as a consequence of natural
phenomena.
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COMPOSITION OF AL6061
Component Amount (wt.%)Aluminium BalanceMagnesium 0.8-1.2Silicon 0.4 0.8Iron Max. 0.7Copper 0.15-0.40Zinc Max. 0.25Titanium Max. 0.15Manganese Max. 0.15Chromium 0.04-0.35Others 0.05
Aluminium alloy 6061 is one of the most extensively used of the 6000 seriesalumium alloys. It is a versatile heat treatable extruded alloy with medium tohigh strength capabilities.
Typical composition of aluminium alloy 6061
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KEY PROPERTIES OF AL6061
MEDIUM TO HIGH STRENGTH
GOOD TOUGHNESS
GOOD SURFACE FINISH
CORROSION RESISTANT
GOOD CORROSION RESISTANCE TO SEA WATER
CAN BE ANODIZED
GOOD WELDABILITY AND BRAZABILITY
GOOD WORKABILITY
WIDELY AVAILABLE
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HOW COMPOSITE CONSTITUENT WERE
SELECTED:-
Al 6061 is selected because of its good formabilitycharacteristics and previously mentioned key properties
CeO2 is corrosion resistant , hard and enhances grain
refinement
TiO2 is very hard material.
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METHODOLOGY AND
EXPECTED TIME PLAN:-1. EXTRUSION OF CAST AL6061-CEO2-TIO2 (1
MONTH )2. FORGING OF EXTRUDED MMCS (1/2
MONTH)
3. MICROSTRUCTURAL ANALYSIS ANDMICRO HARDNESS TEST (1/2 MONTH)
4.AIR JET EROSION TEST (1 MONTH)
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THANK
YOU
..