Defect Detection in Fabrics with a Joint Transform Correlation Technique: Theoretical Basis and Simulation

Abstract The theoretical basis of a technique for real time defect detection in fabrics is presented using a joint transform correlator. This correlation technique is an extension of Fourier transform analysis and is extremely useful for real time pattern recognition. The regular periodic nature of a woven fabric makes it possible to use ..

Heat as a Factor in the Penetration of Cloth Ballistic Panels by 0.22 Caliber Projectiles

This report explores the possibility that heat plays a role in the penetration of cloth ballistic panels by 0.22 caliber projectiles. We postulate that heat is generated by friction between the surface of the projectile and the yarns, between yarns, and between filaments within a yarn in advance of and in the path of the projectile. Evalu..

Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

Our early model for predicting nonwoven fabric stress-strain behavior by the finite element method is generalized to include the effects of fiber curl, which is shown to have a great effect on the tensile behavior of the fabric. A numerical method to characterize the lateral contraction of nonwovens during tensile deformation is presented..

Qualitative and Quantitative Evaluation of Cotton Fabric Damage by Tumble Drying

Abrasion and heat damage to desized and scoured cotton fabric during drying in a household tumble dryer are evaluated by SEM (scanning electron microscopy) and weight and tensile/strain tests for breaking strength and elongation. Wet fabric dried with heat shows severe fiber damage, and wet fabric tumbled at room temperature shows less da..

Tribology of Sized Glass Fibers Part I: Friction Analysis by Lateral Force Microscopy and Electronic Microbalance Technique

Lateral force microscopy (LFM) and an electronic microbalance method are used for a friction force analysis of sized glass fibers, which are generally used to reinforce com posite materials. Friction coefficients of glass fibers A and E, coated with sizes containing a starch and an epoxy film former, respectively, are determined. Friction..

The Diameter Dependence of Fiber Medullation and the Medullation Weighting Function

The concept of a medullation weighting function is introduced as a means of describing variations in fiber medullation with fiber diameter. Developed principally as an aid to model wool fiber diameter distributions containing medullated fibers, the medullation weighting function may find wider applicability for classifying animal fibers.

A Technique for Generating Random Fiber Diameter Profiles Using a Constrained Random Walk

A random walk technique, using appropriate statistical properties of adjacent points in along- fiber diameter profiles in conjunction with a constrained walk deviation, is devel oped for generating random along-fiber, wool snippet diameter profiles. The technique can be used in Monte Carlo simulations where the variation in diameter along..

Using Light and Scanning Electron Microscopic Methods to Differentiate Ibex Goat and Tibetan Antelope Fibers

The scanning electron microscope is able to provide excellent differentiation between endangered Tibetan antelope and currently used Ibex goat hair fibers for "Shahtoosh" shawls. Although there are differences in the features of the fine hair fibers from these animals, the best differentiation is accomplished by using the significant diff..

가죽제품의 관리 - Bag & Shoes -

● 구입직후 관리법 제품을 구입한 후 빠른 시일 내에 방수 스프레이를 분사하면, 제품을 보호할 수있다. 방수 스프레이 는 비와 눈, 얼룩, 기름때, 먼지 등이 가죽에 침투하는 것을 방지하는 역할을 하기 때문이다. 또한 가 죽 표면에 붙은 단순한 오염물을 간단하게 제거할 수 있다. 가죽 스프레이는 제품을 구입한 매장에 서 문의할 수 있으며, 브랜드에 따라 서..

자외선 차폐 소재 ‘SARACOOL’ (1)

사라쿨(SARACOOL)’은 코어-쉬스(core-sheath) 이성분 복합섬유로서 코어 성분에 태양광 차폐 세 라믹을 고농도로 혼입함과 동시에 쉬스 성분의 비율을 매우 적게 한 특수 폴리에스터 섬유이다. 코 어 성분으로 혼입된 태양광 차폐 세라믹에 의해 넓은 파장영역의 빛을 차폐하여 자외선에 의한 일소 (햇빛에 타서 검게 되는 것) 등을 방지하는 기능과 적외선에 의한 ..