How to test Fibre Strength || Single and Bundle Fibre Strength Testing || Pressley Tester [বাংলায়]
Автор: Saiful's Classroom
Загружено: 2021-06-29
Просмотров: 2081
Описание:
Factors influencing fibre strength test result
Methods of Measuring the strength of fibre
Single Fibre Strength Testing
Bundle (Group) Fibre Strength Testing
Tenacity (gm/den or gm/tex)
Breaking length (km)
Gauge length (1/8 inch or 3mm)
Principles of Measuring Fibre Strength
1. Hydraulic Type
2. Balance Type
3. Pendulum Type
4. Spring Type
5. Electronic Type strain gauge or Transducer Type
O'Neills Single Fibre Strength Tester
Single Fibre Strength in gram formula
Pressley Index (PI)
Breaking Strength in Pound / Bundle weight in mg
Pressley Tester
The Balance Principle
Tenacity and Pressley Index Relation
Tenacity = 5.36 * Pressley Index (PI)
Tenacity = 6.8 * Pressley Index (PR) for 1/8 gauge length
Fibre Strength Index (FSI) = (PR * 100) /3.19
Tensile Strength in 1000 lb per sq inch calculation formula
Fibre Grading accoding to FSI
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