GATE (TF) Textile 2014 Question Paper Solution | GATE/2014/TF/35

Question 35 (Textile Engineering & Fibre Science)

Consider the following assertion [a] and reason [r] and choose the most appropriate answer.
[a] Before SEM analysis of carbon fibre, it is sputter coated with gold or silver
[r] This is done because the carbon fibre is electrically insulating

(A)[a] is right [r] is wrong
(B)[a] is right [r] is right
(C)[a] is wrong [r] is wrong
(D)[a] is wrong [r] is right
[Show Answer]

Option C

Frequently Asked Questions | FAQs

What is the SEM analysis used for?

SEM (Scanning Electron Microscopy) analysis is a powerful analytical technique used in the textile industry for a variety of purposes. Some common applications of SEM analysis in textiles include:
Fiber Morphology Analysis: SEM is used to study the surface morphology and structure of textile fibers at high magnifications. This allows for the characterization of various fiber properties, such as size, shape, surface texture, and orientation, which are critical for understanding their performance and behavior in different textile applications.

Fiber Identification: SEM can be used to identify and differentiate different types of fibers, such as natural fibers (e.g., cotton, wool, silk) and synthetic fibers (e.g., polyester, nylon, acrylic). SEM analysis can provide detailed information on the fiber’s surface characteristics, allowing for accurate identification and classification of fibers in textile materials.

Surface Treatment Analysis: SEM can be used to study the effects of various surface treatments, such as chemical treatments, coatings, and finishes, on the textile fibers. SEM analysis can provide visual evidence of changes in the fiber surface morphology, surface roughness, and chemical composition due to surface treatments, helping to optimize textile processing and performance.

Defect Analysis: SEM is used to analyze and identify defects, such as fiber breakage, surface irregularities, and contamination, in textile materials. SEM analysis can provide valuable insights into the causes of defects and help identify process or material-related issues that may impact the quality and performance of textile products.

Characterization of Textile Structures: SEM can be used to investigate the microstructure of textile materials, such as nonwovens, woven fabrics, and knitted fabrics. SEM analysis can provide information on the fiber arrangement, inter-fiber bonding, and overall structure of the textile materials, which is critical for understanding their mechanical, physical, and functional properties.

Overall, SEM analysis is a versatile tool that is widely used in the textile industry for a range of applications, providing valuable insights into the morphology, structure, and properties of textile materials, and aiding in the development and quality control of textile products.

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