Faq of Module11
Faq of Module11
Faq of Module11
3. Calculate the Bending modulus of plain fabric in N/m2 with the following details
Fabric GSM - 200
Fabric thickness - 0.41 mm
Bending length - 20 mm
Answer:
Bending Modulus = (12 x G x 10-6 / T3)
4. A fabric, with mass per unit area of 250 g/m2, has flexural rigidity 275 μNm. What will
be the overhanging length, if the tip of the specimen has to reach a plane inclined at 14.2o
below the horizontal plane?
Answer:
275 = 250 * C3 * 9.807 * 10-6
C3 = (275*106) / (250*9.807) = 48.226 mm
The following are the fabric properties may obtain from KESF,
S. No Major fabric property Definition
1 Tensile LT Linearity of load extension curve
2 WT Tensile energy
3 RT Tensile Resilience
4 Shear G Shear Rigidity
5 2HG Hysteresis of shear force at 0.5o
6 2HG5 Hysteresis of shear force at 5o
7 Bending B Bending Rigidity
8 2HB Hysteresis of Bending moment
9 Lateral Compression LC Linearity of Compression thickness curve
10 WC Compresssional energy
11 RC Compresssional Resilience
12 Surface Characteristics MIU Co-efficient of friction
13 MMD Mean deviation of MIU
14 SMD Geometrical Roughness
15 Fabric Construction W Fabric Weight per unit area
16 To Fabric thickness
6. Briefly explain formability, Hygral expansion? State the advantages of FAST in the
Garment industry.
Answer:
Formability:
It can be described in scientific terms as "a measure of the ability of a fabric to absorb
compression in its own plane without buckling".
Formability is a direct indicator of the likelihood of Seam Pucker occurring either during
or after sewing.
Low Formability = Tendency to Pucker
Hygral Expansion:
Hygral Expansion is the reversible change in the dimension of the fabric that occurs when
the moisture content of the fibres is altered. Using FAST, Hygral Expansion is defined as
the percentage change in dimensions of the relaxed fabric from wet to dry.
Advantages of FAST in garment Industry:
• Fabric specifications