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GB/T 42486-2023 English PDF

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US$219.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42486-2023: Length measurement for wool type fiber - Random beard image method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42486-2023	219	Add to Cart	3 days	Length measurement for wool type fiber - Random beard image method	Valid

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Basic data

Standard ID: GB/T 42486-2023 (GB/T42486-2023)
Description (Translated English): Length measurement for wool type fiber - Random beard image method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W04
Classification of International Standard: 59.060.10
Word Count Estimation: 11,164
Date of Issue: 2023-03-17
Date of Implementation: 2023-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42486-2023: Length measurement for wool type fiber - Random beard image method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS59:060:10 CCS W04 National Standards of People's Republic of China Measuring hair fiber length Random whisker image method Released on 2023-03-17 2023-10-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Fiber Standardization Technical Committee (SAC/TC513): This document is drafted by: Donghua University, Shanghai Institute of Quality Supervision and Inspection Technology, Shandong Nanshan Zhishang Technology Co:, Ltd:, Jiangsu Sunshine Group Co:, Ltd:, Jiangsu Danwool Textile Co:, Ltd:, Zhejiang Sci-tech University, Ordos Resources Co:, Ltd:, Datong City Zhongyin Textile Technology Co:, Ltd:, Laizhou Electronic Instrument Co:, Ltd:, Xi'an Polytechnic University, Standard Technical Service (Shanghai) Co:, Ltd: Division, Henan Institute of Engineering, Shanghai Institute of Electrical Engineering: The main drafters of this document: Li Weidong, Shen Hua, Wang Fumei, Hu Hairong, Wu Meiqin, Heng Chong, Zhao Liang, Pan Feng, Liu Gangzhong, He Liang, Wang You, Zhao Lin, Zhang Xiangdong, Sun Runjun, Zhang Xuebo, Tu Lexi, Su Jian, Cao Shengbin, Yu Jinlin, Liu Shuangsheng: Measuring hair fiber length Random whisker image method

1 Scope

This document describes a method for measuring the length of hair-type fibers using the random whisker image method: This document is applicable to the determination of the length of fibers in natural or white wool-type fiber strips of sheep wool, wool-type chemical fibers, velvet fibers, hemp and spun silk:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 6529 Standard atmosphere for textile humidity conditioning and testing GB/T 8170 Numerical rounding off rules and expression and determination of limit values FZ/T 21004 Domestic fine wool and its improved wool top

3 Terms and Definitions

The following terms and definitions apply to this document: 3:1 randomdual-beard After clamping any cross-section of the fiber strip and combing the floating fibers on both sides, the thickest fiber in the middle of the fiber strip, gradually thinning on both sides and straightening to both sides dimension bundle: 3:2 image method imagemethod A method of analyzing the mass distribution of fiber aggregates through the light intensity of each point in the light transmission or reflection image: 3:3 Fiber length measurement method using double-ended random whiskers as samples and digital camera CCD as photoelectric sensor:

4 principles

Move the double-ended random whiskers into the photoelectric fiber length detector to obtain the light transmission intensity at each point on the whisker plane: by every point of the whiskers The light transmittance and fiber optic parameters are used to calculate the mass of fibers stacked at this point, and then integrated along the cross-section of the whiskers and normalized to obtain the results shown in Figure 1: Relative linear density curves on one side of the double-ended random whiskers shown: ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42486-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42486-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42486-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42486-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.