Burst or broken clutch driven plate facings are caused by overstraining of the facing Matrix due to incorrect driving practice or incorrect clutch installation procedure including adjustments, or flywheel damage.

2. Failure of clutch plate
Prepared by.
Arshad Abbas Khan
Wah Engineering college wah cantt
TITLE

3. • A clutch is really a machine that gives for your
transmission of energy (and thus generally
movement) from 1 element (the driving
member) to a different (the pushed member)
when engaged, but may be disengaged.
What is clutch

4. Clutch

5. – Flywheel
– Clutch disc
– Pressure plate
COMPONENTS OF CLUTCH

6. • ELECTROMAGNETIC CLUTCH
• HYDRAULIC CLUTCH
• CENTRIFUGAL CLUTCH
• SAFETY clutch
• OVERRUNNING CLUTCH
• CONE CUTCH
• DOG CLUTCH
• FRICTION CLUTCH
Types of clutch according to applications

7. clutch release mechanism
mostly two types of release mechanism are used
1.Cable operated release 2.hydraulic release

8. Clutch plate
• A most important component in clutch is
clutch plate or clutch disc

9. 1.Wet clutch plate
Wet clutch are universal and found on any bike. Almost
99% of motorcycle manufactured uses this kind of clutch. Here
it is bathed in oil It stops the clutch from knocking on itself.
2.Dry clutch plate
There is no oil circulated in to the clutch, which result
into clutch knocking on itself. These types of clutch are used in
cars and heavy vehicles
TYPES OF CLUTCH PLATES

10. The springs are most important in c.plate the
sudden shocks or jerks on the plates are
observed by the springs.
torsional springs can be spring or rubber
What is the purpose of springs in plate?

11. 1. Incorrect gear selection
Incorrect gear selection of a low gear while driving at speed
causes the driven plate to accelerate instantaneously to a speed far
in excess of the facing burst strength due to the multiplication of the
rotation speeds of the Gearbox and or Differential Ratios.
2. Miss-Shifting a gear
Miss-Shifting a gear while driving at speed can also cause the
plate to accelerate past its facing burst strength. Miss-Shifting a gear
at high engine RPM can also cause the facing material to break away
from the Backing plate or damage the clutch hub the stop pins-and
blow out the compression springs causing compete clutch disc
failure.
Cause of failure of clutch plate

12. 3. Excessive clutch slippage
Excessive clutch slippage while driving causes the facing
materials to overheat resulting in disintegration and failure of
Clutch Disc and Pressure plate assemblies due to contamination
from the facing materials.
4.No proper care during installation
Simply dropping a clutch disc on the floor or during
installation can impact and easily crack the facing material after
a short operational period.
Cause of failure of clutch plate

13. Consider two friction surfaces maintained in contact by an axial
thrust (W) as shown in fig(a)
Calculation of frictional torque

14. Calculation of frictional torque

15. Calculation of frictional torque

16. When we consider uniform pressure When the
pressure is uniformly distributed over the entire
area of the friction face as shown in Fig.(a) then
the intensity of pressure,
Calculation of frictional torque

17. Thanks