GB/T 23886-2009 English PDF

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GB/T 23886-2009: Determination of nacre thickness -- Optical coherence tomography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23886-2009	189	Add to Cart	3 days	Determination of nacre thickness -- Optical coherence tomography	Valid

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Basic data

Standard ID: GB/T 23886-2009 (GB/T23886-2009)
Description (Translated English): Determination of nacre thickness -- Optical coherence tomography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D59
Classification of International Standard: 39.060
Word Count Estimation: 8,876
Date of Issue: 2009-06-01
Date of Implementation: 2010-01-01
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.7 (Total No.147)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the use of optical coherence tomography nondestructive thickness measurement method pearl beads. This standard applies to the determination of pearl beads layer thickness.

GB/T 23886-2009: Determination of nacre thickness -- Optical coherence tomography

---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.
Determination of nacre thickness. Optical coherence tomography ICS 39.060 D59 National Standards of People's Republic of China Pearl bead thickness measurement method Optical coherence tomography method Posted 2009-06-01 2010-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by the People's Republic of China Ministry of Land Resources. This standard by the National Standardization Technical Committee jewelery. This standard was drafted. National Jewellery Quality Supervision and Inspection Center, Tsinghua University, Shenzhen Moting Imaging Technology Co., Ltd. The main drafters. Zhang Beili, Ke Jie, Shen Mei Dong, Wei Ran, who Nan, Yonghong, Ma Hui, Wang Hui. This standard is the first release. Pearl bead thickness measurement method Optical coherence tomography method

1 Scope

This standard specifies the use of optical coherence tomography nondestructive measurement method of pearl bead thickness. This standard applies to the determination of pearl nacre thickness.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 16552 jewelery name GB/T 16553 jade jewelry appraisal GB/T 18781 pearl grading

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Backscatter signal in an optical coherent after the treatment to obtain a transparent or translucent material internal structure of the image of imaging technology. 3.2 Two beams meet coherent light conditions. 3.3 Short coherence length of the coherent light. 3.4 Scattering the light propagating waves generated after entering the body, also known as backscatter. 3.5 Geometric path of light in the medium experienced converted into light in a vacuum from the size of the optical path of the light equal experience in a medium geometry Product from the medium refractive index. Principle 4 Obtained by optical coherence tomography instrument pearl internal structure of the image, using computer technology to obtain images bead thickness measuring optical path Bead thickness value obtained by calculation.

5 Instruments

5.1 optical coherence tomography instrument --- pearl bead thickness nondestructive testing instrument, the instrument longitudinal resolution of better than 0.015mm. ......

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