GB/T 23886-2009Determination of nacre thickness - Optical coherence tomography (English PDF)
珍珠珠层厚度测定方法 光学相干层析法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 1, 2009
Implementation date
January 1, 2010
Scope
GB/T 23886-2009 is the English-translated version of 珍珠珠层厚度测定方法 光学相干层析法.
GB/T 23886-2009 is the Chinese standard "Determination of nacre thickness - Optical coherence tomography". Its scope clause reads: 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. Its clauses include terms and definitions; instruments.
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Document preview — GB/T 23886-2009
National Standard of the People's Republic of China
- ICS
- 39.060
- Classification
- D 59
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 5 Instruments
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.
GB/T 16552-2017 | GB/T 14506.30-2010 | SN/T 0481.7-2007 | GB/T 45611-2025 | GB/T 44910-2024 | GB/T 23885-2009 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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