Textile Laboratory Tests | Advantages/Disadvantages of Laboratory Tests

-

Laboratory Tests
The main purpose of laboratory tests is to obtain prior knowledge of the performance of textile products in service. The assumption is made that when such tests are carried out, there is some relationship between the results of the laboratory tests and the performance of the items in use. In order to design laboratory testing procedures that correlate with end use performance the conditions of actual use must be carefully analysed so that they can be simulated as closely as possible in a controlled setting. Since actual wear is such a complex phenomenon, however, laboratory tests are usually designed to evaluate only one or a limited number of variables at a time.

Advantages of Laboratory Tests :
1. They are rapid. Most tests can be completed within a day.
2. They are designed to give objective results. A numerical result or rating allows one fabric to be ranked as being better or worse than another fabric even when the differences between them are small.
3. The tests are under the direct control of the tester. This allows the conditions of test to be exactly specified and factors other than those under test to be kept constant.
4. They can be reproduced. An identical test carried out on the same fabric should ideally give the same result in any laboratory and with any operator.

Disadvantages of Laboratory Tests :
1. Laboratory tests can only imitate wear conditions
2. For a complete evaluation of a fabric it is necessary to use a large range of expensive equipment.
3. Laboratory tests are rapid because many of them aim to accelerate the natural causes of wear. Speeding up a test may give false results, for example the continuous action of abrasion tests may cause heating of the material which is not present in normal use.

Comments

Post a Comment

Popular posts from this blog

Green factory

-
Introduction: Bangladesh export industries for apparel and textiles have completed its four decade. During this time there were different phases of challenges and prosperity. In the 1 st  decade the challenge was the technical know-how. Some of the big enterprises of that time played a leading role e.g. Reaz garments, Desh Garments, Paris Garments, etc. Of them Desh garments together with Korean company Hyundai trained many of its staffs in Korea for technical training. From those trained staffs our industry got many new entrepreneurs who later become leading industrialist of this time. At the middle of its 2 nd  phase the government took various steps in order to set up backward and forward linkages for the industry. This brought many new spinning mills, weaving mills, and most importantly knitted composite factories were grew up in the country like mushrooms. During the end of 2 nd  decade and start of the 3 rd  decade Bangladesh garment industry faced the first global challen
Read more

Hydro Extractor | Advantages of Hydro Extractor in Textile Finishing Process

-
Hydro Extractor | Advantages of Hydro Extractor in Textile Finishing Process Hydro Extractor: Hydro-Extractors are also called Centrifuges. Centrifuges are used for water extraction (dewatering, pre-drying) of textile materials. Values of approx. 15% for residual moisture content can be achieved depending on the type of textile fiber. Centrifuges with perforated drums or baskets (Ø up to approx. 2000 mm) which oscillate vertically in ball-and-socket joints suspended on three points are produced in various designs as pendulating, suspension, cage and vertical centrifuges, also with so called gliding support bearings as gliding support centrifuges or in horizontal resp. vertical arrangements as open-width, horizontal and warp-beam centrifuges, etc. Most centrifuges have electric drives for speeds of approx. 750–1200 rpm and are generally provided with automatic control over various ranges. For safety reasons, an interlocking lid is essential on a centrifuge so that the motor cannot b
Read more

What is Production Planning in Garments industry?

-
Production planning is the very important department in garments industry. Production planning is the controlling aspect of garments industry. It is involves everything & every task in the process to execution the delivery of goods within time frame. So, production planning is the controlling of production & manufacturing process determined by time frame. Planning department plan every style to execution the order within time limit. Without time frame garment cannot sustain so garment industry must follow every task by scheduling. Each order has a delivery date & production plan department follow production plan on the base of delivery date. They know when fabric & trims in-house in factory will. Basically some of fabric & trims come from Local & internationally .So, they plan both option on the base of delivery date. A buyer can judgment by shipment percentage & where the vendor current position? So production planning department must follow some of the
Read more