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GB/T 1941-2009 Method of testing in hardness of wood

Standard Number:  GB/T 1941-2009
Title:  Method of testing in hardness of wood
Language:  Simplified Chinese
Publication Date:  2009/2/23
Execute Date:  2009/8/1
Adopted International Standard:  ISO 3350-1975 Wood; Determination of static hardness
Status:  Current
Standard Type:  Method
International Classification for Standards (ICS)WOOD TECHNOLOGY>>Wood technology processes
Publisher:  Chinese Standards(GB)
Number of Pages:  

Preface: Modify this standard USES the international standard ISO3350:1975 "wood static measurement of hardness. Compared this standard with ISO3350:1975, the main technical content differences are as follows: 6.2 --, modify, each sample should be respectively in the two strings, two diameter plane and end face each test on a (1975) In this version 6.2); - revision 7.3, hardness of the specimen when the moisture content of 12%, should press type Feng 12 = Feng adressed [1 + 0.03 (adressed - 12)] (7.3) in 1975 and this calculation. Instead of this standard GB/T1941-1991 "wood hardness test method". This standard Compared with GB/T1941-1991, the main changes are as follows: --, modify the chapter 3, 1, 6.3, 7.1, 4.2 and figure in the hemisphere section head (in 1991 and this version of the 3, 1, 6.3, and 4.2 and figure 7.1). --, modify the 4.3, lumber moisture content measuring equipment, should comply with GB / T1931-2009 in chapter 3, (and this version of the 4.3 1991); - revision 6.2, each sample should be respectively in the two strings, the two paths and each test on the two end face once (in 1991 and this version 6.2); - delete 6.3 "will load readings fill in appendix A (supplement ) in the form "(6.3) in 1991 and this; - revision 7.2, two strings of sample surface, two diameter and average, from each end of the two test results as the sample's surface hardness (7.2) in 1991 and this; --, modify the" eight test result record and report, "the test results Fill in according to appendix A. Test report according to GB/T1928 - the content of 7.4 in 2009 to write (chapter 8) in 1991 and this; --, appendix A test site, transverse load, string diameter surface load and surface load, remove moisture content, end surface hardness, surface hardness and diameter surface hardness (1991) In this version appendix A). Annex A is normative appendix of this national standard. This standard is put forward by the state forestry administration. This standard by the national wood standardization technical committee to review. This standard is responsible for drafting unit: anhui agricultural university. In this standard drafting unit: international bamboo rattan network center, northeast forestry university. This standard is mainly Draftsman: you-hong wang, ze-hui jiang, yi-xing liu, chuan-gui wang, xing-e liu. This standard was first published in 1980, in May 1991, the first revision. This standard by the national wood standardization technical committee will be responsible for the explanation.   
Description:This standard stimulates the determination of wood hardness test equipment, sample, test procedure, results of calculation and test results record and report.
this standard applies to wood without spot small sample size, string, the determination of end surface hardness.  
Cross References:GB/T1928—2009 (ISO3129:1975,Wood—Samplingmethodsandgeneralrequirementsforphysicalandmechanicaltests,NEQ)
GB/T1929—2009 (ISO3129:1975,Wood—Samplingmethodsandgeneralrequirementsforphysicalandmechanicaltests,MOD)
GB/T1931—2009 (ISO 3130:1975,Wood—Determinationofmoisturecontentforphysicalandmechanicaltests,MOD)  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  746KB
Tile in English:  Method of testing in hardness of wood

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