RU2219545C2

RU2219545C2 - Fur thickness evaluating method

Info

Publication number: RU2219545C2
Application number: RU2002101656/12A
Authority: RU
Inventors: С.П. Рассадина; Ж.Ю. Койтова; Н.В. Маценова; В.Г. Выскварко
Original assignee: Санкт-Петербургский государственный университет технологии и дизайна; Костромской государственный технологический университет
Priority date: 2002-01-16
Filing date: 2002-01-16
Publication date: 2003-12-20

Abstract

FIELD: fur, textile and sewing industry, agriculture. SUBSTANCE: method involves separating fur portion area under control directly on fur; gathering fur hair of said portion into bundle; fixing hairs in bundle and determining number of hairs in bundle; calculating fur thickness from formula:

, where n is total number of hairs in bundle n_a = n_a+n_f,, pc; S is area of fur portion under control, sq.cm; additionally determining diameter of fuzz and awn hair; evaluating section area in vertically fixed hair bundle in two levels defined by hair foot and fuzz hair ends at predetermined pressure; determining number n_a of awn hairs and number n_a of fuzz hairs in total number n_f of hairs from formula:

, where n_a is number of awn hairs, pc; S_2b is section area of bundle at fuzz hair ends, sq.mm; S_2a is section area of awn hair, sq.mm;

, where S_2b is section area of bundle at fuzz hair ends, sq.mm; S_1b is section area of bundle at hair roots, sq.mm; S_1f is section area of fuzz hair, sq.mm. Method provides nondestructive measurement of hair surface thickness of artificial and natural fur during investigations, at sorting and evaluation stages. EFFECT: intensified and nondestructive quantitative evaluation of fur thickness at sorting stage, improved and accelerated animal grading quality evaluation due to elimination of manual process for hair number counting. 3 dwg, 2 tbl

Description

Текст описания в факсимильном виде (см. графическую часть) Т, Description text in facsimile form (see graphic part) T,

Claims

A method for evaluating the density of fur, including the allocation of the area of the studied fur section, collecting hair in a bundle from this section, fixing them in a bundle, determining the amount of hair by which the fur density is calculated by the formula

where n is the total number of hair in the bundle n _total = n _aw + n _fluff , pcs .;

S is the area of the studied area of the fur, cm ² ,

characterized in that the diameter of the down and outer hair is additionally determined, the area of the test area is allocated directly on the fur, and in a fixed vertical hair bundle, the cross-sectional area is evaluated in two levels, determined by the location of the hair base and the place where the down hair ends at a given pressure, and the definition in the total amount of hair (n _total ) the number of core (n _awn ) and down (n _down ) is carried out according to the formulas

where n _ost - the number of remaining hair, pcs .;

S _{2 bundles} - the cross-sectional area of the bundle at the end of down hair, mm ² ;

S _{2 awns} - cross-sectional area of the outer hair, mm ^2,

where S _{2 the beam} is the cross-sectional area of the beam at the end of the downy hair, mm ² ;

S _{1 beam} - the cross-sectional area of the beam at the base of the hair, mm ² ;

S _{1 down} - the cross-sectional area of down hair, mm ² .