Jute fiber is a promising reinforcement for use in composites on account of its low cost, low density, high specific strength and modulus, no health risk, easy availability, renewability and much lower energy requirement for processing. In recent years, there has been an increasing interest in finding new applications for jute fiber-reinforced composites that are …
Once, jute fibre was widely known as the “golden fibre” or cash-crop of Bangladesh because of it’s quality and demand. Jute is a vegetable bast fibre next to cotton in importance. Fibres which are obtained from stem or bark of certain vegetable plants, are called bast fibres. Such as –Jute, flax, hemp, ramie, kenaf etc. In …
What are the operations involved in Blow room? Blow Room: 👉Blow Room consists of a number of machines used in succession to open and clean the cotton fibre to the required degree. 40 to 70% trash is removed in this section. Opening, Cleaning, Mixing, Blending, Lap forming are the main functions in blow room. Contents …
Poisson’s ratio? When a sample of material is stretched in one direction it tends to get thinner in the lateral direction – and if a sample is compressed in one direction it tends to get thicker in the lateral direction. Poisson’s ratio is defined as the ratio of the change in the width per unit …
Yarns are extended or elongated under loading. Stress analysis based on assumptions of small deformations and fixed thread diameter or theory of continuous filament yarns extension have been explained as below. Notations: h: length of one twist yarn. δh: the amount of extension. r: radius of the cylinder. R: radius of the yarn package. θ: twist …
The term fibre migration is used to describe the relative movement of fibre with respect to neighbouring fibres during the process of twist insertion into the fibre assembly and the ultimate position of the fibre in the final yarn structure. Assumptions: 1. Migration only occurs when the tension in the central layer drops to zero …