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GB/T 1936.2-2009 English PDF

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GB/T 1936.2-2009: Method for determination of the modulus of elasticity in static bending of wood
Status: Obsolete

GB/T 1936.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 1936.2-2009English319 Add to Cart 3 days [Need to translate] Method for determination of the modulus of elasticity in static bending of wood Obsolete GB/T 1936.2-2009
GB/T 1936.2-1991English199 Add to Cart 2 days [Need to translate] Method for determination of the modulus of elasticity in static bending of wood Obsolete GB/T 1936.2-1991

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Basic data

Standard ID GB/T 1936.2-2009 (GB/T1936.2-2009)
Description (Translated English) Method for determination of the modulus of elasticity in static bending of wood
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B60
Classification of International Standard 79.020
Word Count Estimation 7,724
Date of Issue 2009-02-23
Date of Implementation 2009-08-01
Older Standard (superseded by this standard) GB/T 1936.2-1991
Quoted Standard GB/T 1928-2009; GB/T 1929-2009; GB/T 1931-2009
Adopted Standard ISO 3349-1975, NEQ
Regulation (derived from) National Standard Approval Announcement 2009 No.3 (Total No.143)
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 determination of the flexural modulus of elasticity of the wood test equipment, test procedure, , specimens calculated results and test reports. This section applies to the flexural modulus of elasticity of wood unblemished small sample measurement.

GB/T 1936.2-2009: Method for determination of the modulus of elasticity in static bending of wood

---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.
Method for determination of the modulus of elasticity in static bending of wood ICS 79.020 B60 National Standards of People's Republic of China Replacing GB/T 1936.2-1991 Wood bending modulus of elasticity measurement method (ISO 3349. 1975, Wood-Determinationofmodulusof elasticityinstaticbending, NEQ) Posted 2009-02-23 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 1936 is divided into two parts. --- GB/T 1936.1 Wood bending strength test method; --- GB/T 1936.2 Wood bending modulus of elasticity measurement method. This section GB/T 1936.2 "Wood bending modulus of elasticity determination." This part of the international standard ISO 3349. 1975 "Wood static flexural modulus determination," the non-equivalent. This Part replaces GB/T 1936.2-1991 "Wood bending modulus of elasticity determination." This section compared with the GB/T 1936.2-1991, the main changes are as follows. --- Original standard 4.1 "load measurement accuracy should be consistent with GB/T 1928-1991 Chapter 6 requirements," the words "can be measured Load accuracy of 1% "; --- Original standard "GB 1931 Chapter 3 test equipment specified in" 4.3, to "GB/T 1931-2009 the provisions of Chapter 3 Test Device "moisture content; --- Added "Using a dial indicator or other instrument capable of measuring linear displacement measuring specimen deformation" in 6.2; --- 6.3 times the deformation is measured by the "repeated four times" to "repeated three times," added "to the digital electronic control tester can be Loading rate was set at 1mm/min ~ 3mm/min "; --- The 7.1 "based on a sample deformation values \u200b\u200bmeasured after three" to "the specimen deformation based on two measured value"; --- All the original standard "to accurately" to "accurate to"; --- The test records the table, "bending strength" and "moisture" two items removed. Appendix A of this part is a normative appendix. This part by the State Forestry Administration. This part of the National Standardization Technical Committee centralized timber. This section drafted by. China Forestry Science Institute of Wood Industry. The main drafters of this section. Luo Xiuqin, Ren Haiqing, sub-Yin Fang, Wang Zhaohui, Jiang Jinghui, Zhou Haibin. This section was first released in 1980, in May 1991 the first amendment. Wood bending modulus of elasticity measurement method

1 Scope

GB/T 1936 provisions of this part of the measuring timber flexural modulus of elasticity test equipment, samples, test procedures, and test results of the calculation report. This section applies to wood unblemished MOE small sample measured.

2 Normative references

The following documents contain provisions which, through reference to GB/T 1936 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 1928-2009 physical and mechanical test methods - General GB/T 1929-2009 physical and mechanical test materials and test specimens sawing method GB/T 1931-2009 Method for determination of moisture content of wood Principle 3 In the proportional limit stress, according to the relationship between load and deformation of the timber to determine the flexural modulus of elasticity when force bent wood.

4 Test Equipment

4.1 Functional test load measurement accuracy of 1%. Supports of the radius of curvature of the end portion of the specimen ram apparatus is 30mm, two seat pitch Off should be 240mm. Testing should be accurate measuring 4.2 to 0.1mm. 4.3 dial indicator range is 0mm ~ 10mm, accurate to 0.01mm. 4.4 GB/T 1931-2009 the provisions of Chapter 3 of the test device was measured moisture content.

5 Sample

5.1 test material sawing and test specimens shall conform to GB/T 1929-2009 the provisions of Chapter 3. 5.2 Sample size is 300mm × 20mm × 20mm, a length along the grain direction. Tone sample preparation requirements and inspection, the sample moisture content Whole shall conform to the provisions of GB/T 1928-2009 Chapter 3 and Chapter 4. Allow the bending strength test using the same sample, measured first bomb Modulus, flexural strength after the test.

6 Test procedure

6.1 using tangential loading, in the center of the sample length measured radial dimension of width, height tangential to the nearest 0.1mm. 6.2 loading two o'clock, with a dial indicator or other specimen deformation measurement instrument can measure the linear displacement of the test apparatus shown in Figure 1.

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