GB/T 32061-2015Testing method of laminated glass interlayer shear modulus (English PDF)
夹层玻璃中间层材料剪切模量的测量方法
This is a limited preview
Buy now to download the full PDF (15 pages)
Need quotation for your management?
Get a formal quotation for GB/T 32061-2015 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 9, 2015
Implementation date
September 1, 2016
Scope
GB/T 32061-2015 is the English-translated version of 夹层玻璃中间层材料剪切模量的测量方法.
GB/T 32061-2015 specifies the terms and definitions, test device, specimen, test procedures, data analysis and test report for determining the shear modulus G of the interlayer of laminated glass.
Clause 1 states that it is applicable to measuring the interlayer shear modulus of polybutylene butyral (PVB), as the page renders it, ethylene vinyl acetate copolymer and ionic interlayer film, and allows the shear modulus of other viscoelastic materials to be measured by reference to it.
Its contents list names Scope, Terms and Definitions, Test Device, Specimen, Test Procedures, Data Analysis and Test Report, followed by an informative Appendix A giving example tables.
Clause 2 defines the Young complex modulus, noting that it is made up of a real storage modulus and an imaginary loss modulus which represent respectively the energy stored in elastic deformation and the energy lost in irreversible plastic deformation, and defines the shear modulus and the Poisson ratio.
Clause 5 has the specimen measured in the tensile mode from low to high temperature to obtain the Young storage and loss moduli at different temperatures and loading periods, with a liquid nitrogen supply device used to cool the specimen to the lower limit of the set temperature.
Clause 6 then has the raw data plotted as a time-temperature equivalent master curve, uses linear interpolation on that curve to select the complex modulus for a given temperature and load cycle, and calculates the shear modulus from the complex modulus and the Poisson ratio, tabulating both against time and temperature; a note allows the Poisson ratio of the three named interlayer materials to be taken as 0.5 between minus 40 and 80 degrees Celsius.
Clause 7 lists the minimum content of the test report, including the name, type and source of the specimen, a description of the test device, the specimen dimensions and thickness, the storage temperature, humidity and time before the test, the temperature rise procedure with its initial and final temperatures and step length, and the original test data.
The standard is administered by the National Technical Committee for the Standardization of Industrial Glass and Special Glass (SAC/TC 447) on a proposal from the China Building Material Federation. It was issued on 9 October 2015 and has applied since 1 September 2016.
Found what you need?
Document preview — GB/T 32061-2015
National Standard of the People's Republic of China
- ICS
- 81.040.01
- Classification
- Q 30
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Terms and Definitions4
- 3 Test Device5
- 4 Specimen6
- 5 Test Procedures6
- 6 Data Analysis7
- 7 Test Report7
- Appendix A (Informative) Table Example9
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
1 Scope
This Standard specifies the terms and definitions, test device, specimen, test procedures, data analysis and test report of laminated glass interlayer shear modulus (G).
This Standard is applicable to the measurement of Polybutylene Butyral (PVB), Ethylene Vinyl Acetate Copolymer (EVA), laminated glass interlayer shear modulus including ionic interlayer film, and the measurement of other visoelastic material shear modulus can refer to this Standard.
2 Terms and Definitions
The following terms and definitions are applicable to this document.
2.1 Young's complex modulus
When material is in the elastic limit, the ratio between normal stress and normal strain, which is expressed by E* in MPa.
NOTE: Young's complex modulus consists of real Young's storage modulus (expressed by E' in MPa) and imaginary Young's storage modulus (expressed by E'' in MPa); i.e.. E*= E' + iE'', thereof i is the imaginary unit. The Yong's storage modulus indicates the energy stored by visoelastic material during the deformation due to elastic deformation. The Young's loss modulus indicates the energy loss of the visoelastic material during the deformation due to plastic deformation (irreversible).
2.2 Shear modulus
When material is in the elastic limit, the ratio between shear stress and shear strain, which is expressed by G in MPa.
2.3 Poisson's ratio
When material is dragged or compressed in one direction, the ratio between the absolute value of transverse positive strain and absolute value of axial positive strain, which is expressed by µ.
5 Test Procedures
5.4 According to the tensile mode shown in Figure 1, measure it from the low to high temperature; obtain the original data. the Young's storage modulus E' and Young's loss modulus E'' of specimen under different temperature and different loading period.
5.5 Open the liquid nitrogen supply device for cooling till reach the lower limit of the set temperature.
6 Data Analysis
6.1 Analyze the original data obtained from 5.4, then draw the time-temperature equivalent principal curve for the interlayer material at different temperature.
6.2 According to the different temperature and time principal curve data, adopt linear interpolation method to select, on the principal curve, the Young's complex modulus value with corresponding temperature and load cycle. Prepare the table of Young's complex modulus corresponding to time and temperature, see Table A.1.
6.3 Use the mathematical relationship formula (1) among Shear Modulus G, Young's Complex Modulus E*, and Poisson's Ratio µ, and calculate the Shear Modulus G of interlayer material. Obtain the table of shear modulus corresponding to time and temperature, see Table A.2.
NOTE: in the range of -40°C~80°C, the Value-µ of PVB, EVA and ionic interlayer film can be regarded as Constant 0.5.
7 Test Report
The test report shall contain the following contents at least.
a) Specimen situation. name, type and source;
b) Description of test device;
c) Specimen dimension and thickness;
d) Before test, the storage temperature, humidity and storage time of sample;
e) Temperature-rise procedures include initial and final temperature and temperature-rise step length;
f) Original test data; […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
How to Download GB/T 32061-2015
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
GB/T 10007-2026 — Rigid cellular plastics - Determination of shear properties
Secure payment via Stripe
Payments accepted
GB/T 32061-2015
$85.00