The document summarizes a student project to design and fabricate a wear testing machine. The objectives are to design and fabricate the machine and validate it according to ASTM standards. It will use a pin-on-disc configuration to measure the wear of materials when a pin contacts a rotating disc under a known load. The specifications include pins of aluminum and mild steel that are 8mm in diameter, a 180mm disc with 8mm thickness and 62 hardness, and a load range of 3-6kg. The document provides the methodology, factors that influence wear, a 3D model of the proposed machine design, and intended uses to conduct fundamental wear studies of materials.

1. KLE’S DR.MSSCET BELAGAVI
DEPARTMENT OF MECHANICAL ENGINEERING
PROJECT SYNOPSIS ON
“Design And Fabrication Of Wear Testing machine”
Under the guidance of
Proff.N K Kelagaeri
Prepared By
Praveen Naik 2KL15ME065
Praveenkumar Sobarad 2KL15ME067
Tripalgouda G 2KL15ME110
Kush S Budihal 2KL15ME034

2. OBJECTIVE:
Design and fabrication of wear testing machine.
Validation of the same in accordance with G99 ASTM standards.

3. Problem definition:
The review study on wear showed the strengths and findings of
various wear testing machines. The investigation of the same should
be utilised to allow new work to progress and therefore improve our
knowledge. Hence it is our project to design and fabricate a cost
effective and efficient wear testing machine (Pin on Disc type) which
measures the wear of the given material.

4. Methodology:
In this test, the sample to study is mounted on a rotating stage and a
pin comes in contact with the sample surface, with a known force, to
create the wear.
A flat or a sphere shaped indenter is loaded on to the test sample with
a precisely known force. The indenter is mounted on a stiff lever,
designed as a frictionless force transducer.
As the disk is rotated, resulting frictional forces acting between the
pin on the disk are measured.

5. Wear Dependence:
For Dry/unlubricated surfaces sliding
Normal Load
Relative sliding speed
The initial temperature
Thermal, Mechanical , chemical properties of the material in contact

6. Specification of the machine:
Sample of pins supplied:Aluminium,mild steel.
Diameter of pin:8mm
Disc Size 180mm outer diameter and 8mm thickness with 62
hardness.
Wear track Diameter: Approximately 50mm to 160mm.
AC motor 1HP,220V.
Maximum load 3-6kg.

7. 3D Model of Machine:

9. Working:
In this test, the sample to study is mounted on a rotating stage and a
pin comes in contact with the sample surface, with a known force, to
create the wear. A flat or a sphere shaped indenter is loaded on to the
test sample with a precisely known force. The indenter is mounted on
a stiff lever, designed as a frictionless force transducer. As the disk is
rotated, resulting frictional forces acting between the pin on the disk
are measured.

10. Uses of machine:
Historically, this type of machine has been used for fundamental wear
studies of materials including metals, plastics, composites, ceramics
and coatings in solid lubricated or dry conditions.
The principal advantage is that it is easy to cover wide load and speed
ranges and therefore obtain a broad sweep of material performance.
Wear mapping and parametric studies are readily performed

11. References:
Leonardo Electronic Journal of Practices and Technologies ISSN
1583-1078 Issue 19, July-December 2011.
Y. N Liang,., Z. Y Ma , Li, S. Z., Li, S. And Bi, J., (1995) “Effect Of Particle
Size On Wear Behaviour Of Sic Particulate-Reinforced Aluminum Alloy
Composites”, Journal Of Materials Science Letters, , 14, 114- 116.
How H.C., Baker T.N. , (1997) “Dry Sliding Wear Behaviour Of
SaffilReinforced Al6061 Composites”, Wear 210 , Pg . 263-272.
 R. Dasgupta, R. Thakur, And B. Govindrajan (2002) , Regression
Analysis Of Factors Affecting High Stress Abrasive Wear Behavior ,
Springer ,Volume 2, Number 2, 1 April 2002 , Pp. 65-68(4).

12. THANK YOU