carpet dynamic loading

1. CARPET DYNAMIC LOADING TEST
PRESENTED BY –
IICT BHADOHI
INDIAN INSTITUTE OF CARPET
TECHNOLOGY

2. PRINCIPLE
The specimen is subjected to a cyclic –loading
treatment in which a weight piece ,with two steel feet
on its underside repeatedly drops freely on the
specimen.
• The specimen is slowly traversed so that vertical
shearing loss produced by the edges of the feet
act on the requisite area of the specimen.
• Then the thickness is measured, before and after
treatment by the procedure specified BS ISO
2094:1999.

3. APPARATUS
1. DYNAMIC LOADING MACHINE
• Weight-piece
• WIDTH:6.5 mm±0.5mm
• LENGTH:51 mm±0.5 mm
• DEPTH:9.5mm±0.5mm
• TOTAL MASS:1279g±13g
• Weight-piece fall freely under gravity from
height of 63.5mm±0.5mm on to the
specimen at 4.3 s±0.3 s.
• STEEL BASE PLATE : 150mm±0.5mm long
and 125 mm± 0.5 mm wide ,to which specimen
is clamped in the sides by the means of two
150mm±0.5mm long and 20mm±0.5 mm steel
bars.
2.THICKNESS TESTER-as specified in ISO
1765,capable of measuring the thickness of the
specimen under pressure of 2.0 kPa.
3.TEST SPECIMEN :

4.  Test at least two specimen from each sample
selected according to the direction in ISO 1957.
• Cut each test specimen approximately
125mm*125mm with a side parallel to the warp
and so that they do not contain the same warp or
same weft threads.
• They shall be cut at least 50mm from the
selvedge.

5. PROCEDURE
• Firstly specimen thickness is measured by
thickness tester.
• The specimen is placed in the plate of the
dynamic loading machine and 50 impacts is
applied.
• Then the specimen thickness is measured
immediately.
• Thickness measurements shall be made at
intervals up to 1000 impacts ( after 50,100,200
and 1000 will be found suitable) but more
impacts may be applied.

6. OBSERVATION TABLE FOR CARPET
DYNAMIC LOADING TEST(BS/ISO
2094:1999)
Before test(thickness of carpet) After test (thickness of carpet)
mm mm mm mm Avg.(mm) No. of
impact
A B Avg. Thickness
loss(mm)
After 50
cycles
After
100
cycles
After
200
cycles
After
500
cycles
After
1000
cycles
Before test(thickness ofcarpet) After test (thickness of carpet)
mm mm mm mm Avg.(mm) No. of
impact
A B Avg. Thickness
loss(mm)
After 50
cycles
After 100
cycles
After 200
cycles
After 500
cycles
After
1000
cycles

7. CALCULATION

8. RESULT ANALYSIS