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GB/T 1452-2005 English PDF (GBT1452-2005)
GB/T 1452-2005 English PDF (GBT1452-2005)
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GB/T 1452-2005: Test method for flatwise tension strength of sandwich constructions
GB/T 1452-2005
GB
ICS 83. 120
Q 23
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB/T 1452-1987
Test method for flatwise tension
strength of sandwich constructions
ISSUED ON. MAY 18, 2005
IMPLEMENTED ON. DECEMBER 1, 2005
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration Committee of the People's
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Test principle ... 5
5 Test equipment and test conditions ... 5
6 Sample ... 6
7 Sample preparation ... 6
8 Conditioning ... 7
9 Test procedures ... 7
10 Calculation ... 8
11 Test result ... 9
12 Test report ... 9
Annex A ... 10
Foreword
This standard modifies and adopts American standard ASTM C297-94(1999) Standard
Test Method for Flatwise Tensile Strength of Sandwich Constructions. Annex A lists out
the comparison of the chapter and article numbers between this standard and ASTM
C297-94(1999).
The main technical differences between this standard and ASTM C297-94(1999) are as
follows.
— This standard adopts fixture with cardan joint;
— This standard has not only flat tension strength indexes; but has flat tension glue
joint line strength indexes for trellis-pattern core.
This standard replaces GB/T 1452-1987 Standard Test Method for Flatwise Tension
Strength of Non-metal Sandwich Constructions.
This standard, in comparison with GB/T 1452-1987, has the major changes as follows.
— Add Foreword;
— Add Scope (See Chapter 1);
— Add Normative references (See Chapter 2);
— Add some terms and definitions (Chapter 1 of 1987 version, Chapter 3 of this
version);
— Add test principle (See Chapter 4);
— Add sample preparation (See Chapter 7);
— Previous test conditions are divided into 2 chapters - test equipment and
conditioning (Chapter 3 of 1987 version, Chapter 5 and Chapter 8 of this version).
Annex A of this standard is informative.
This standard was proposed by China Building Materials Industrial Association.
This standard shall be under the jurisdiction of the National Technical Committee on Fiber
Reinforced Plastic of Standardization Administration of China.
The responsible drafting organization of this standard. Shanghai FRP Research Institute.
The main drafters of this standard. Zhou Zhulin, Wang Yaxiong, and Zhang Zilong.
This standard was first-time issued in 1978, first revised in 1987, and second revised in
2003.
Test method for flatwise tension strength
of sandwich constructions
1 Scope
This standard specifies the test principle, test equipment, samples, conditioning, test
procedures, calculation, test result, and test report etc. of test method for flatwise tension
strength of sandwich constructions.
This standard is applicable to measurement of flatwise tension strength of the core in
sandwich constructions and flatwise tension strength of the core-to-facing bond.
2 Normative references
The articles contained in the following documents have become part of this standard when
they are quoted herein. For the dated documents so quoted, all the modifications
(excluding corrections) or revisions made thereafter shall not be applicable to this
Standard. For the undated documents so quoted, the latest editions shall be applicable to
this Standard.
GB/T 1446-2005 Fiber-reinforced plastics composites - The generals
GB/T 3961 Terms for fibre reinforced plastics
3 Terms and definitions
The following terms and definitions and those established in GB/T 3961 apply to this
standard.
3.1
Flatwise tension
The tension by using the special fixtures along the direction vertical to panels of sandwich
constructions.
3.2
Flatwise tension linear strength
For honeycomb type sandwich construction, it refers to the maximum tensile strength
sustained at the unit jointed side at the direction vertical to panels of sandwich
constructions.
3.3
Honeycomb core
The honeycomb type materials made by means of glue jointing, spot welding, or injection
molding using of metal foil, glass cloth, plastic and various kinds of paper.
3.4
Adhesive layer
The adhesive layer between panel and core in the sandwich constructions.
3.5
Debonding
The segregation phenomenon of panel and core in the sandwich constructions. This
standard also includes the segregation of samples and loading block.
4 Test principle
Apply tensile load at the direction vertical to panel of sandwich structure by using special
tensile fixture with cardan joint, so that to make tensile fracture to core or tensile fracture
to glue jointing between panel and core.
5 Test equipment and test conditions
5.1 Test equipment shall meet the provisions in Chapter 5 of GB/T 1446-2005.
5.2 See Figure 1 for the diagram of tensile fixtures with cardan joint. Cardan joint can be
automatically center-aligning.
5.3 Vernier caliper. accuracy is 0.01mm.
5.4 Load speed is (1-2) mm/min. Arbitration test load speed is 1mm/min.
5.5 Test conditions shall meet the provisions in Chapter 3 of GB/T 1446-2005.
Where.
σa — Wiring strength, in N/m;
La — Glue jointing length in unit area, 1/mm;
d — Length of double-layer honeycomb side in honeycomb, in mm;
c — Length of single-layer honeycomb side in honeycomb, in mm;
θ — Half of single-layer honeycomb wall angle in honeycomb, in °.
11 Test result
It shall be according to the provisions in Chapter 6 of GB/T 1446-2005.
12 Test report
It shall be according to the provisions in Chapter 7 of GB/T 1446-2005.
Annex A
(Informative)
Comparison of chapters and article numbers between this standard and ASTM
C297-94 (1999)
Table A.1 shows the comparison of chapter and article numbers between this standard
and ASTM C297-94 (1999).
Table A.1 Comparison of chapters and article numbers between this standard and
ASTM C297-94 (1999)
Chapters and article numbers of this
standard
Corresponding Chapters and article
numbers of foreign standard
1. Scope 1. Scope
2. Normative references 2. References
3. Terms and definitions —
— 3. Significance and application
4. Test principle —
5. Test equipment and conditions 4. Equipment
6. Sample 5. Sample
7. Sample preparation —
8. Conditioning 6. Conditioning
9. Test procedures 7. Procedures
10. Calculation 8. Calculation
11. Test result —
12. Test report 9. Report
— 10. Accuracy and deviation
— 11. Keywords
Get QUOTATION in 1-minute: Click GB/T 1452-2005
Historical versions: GB/T 1452-2005
Preview True-PDF (Reload/Scroll if blank)
GB/T 1452-2005: Test method for flatwise tension strength of sandwich constructions
GB/T 1452-2005
GB
ICS 83. 120
Q 23
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB/T 1452-1987
Test method for flatwise tension
strength of sandwich constructions
ISSUED ON. MAY 18, 2005
IMPLEMENTED ON. DECEMBER 1, 2005
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration Committee of the People's
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Test principle ... 5
5 Test equipment and test conditions ... 5
6 Sample ... 6
7 Sample preparation ... 6
8 Conditioning ... 7
9 Test procedures ... 7
10 Calculation ... 8
11 Test result ... 9
12 Test report ... 9
Annex A ... 10
Foreword
This standard modifies and adopts American standard ASTM C297-94(1999) Standard
Test Method for Flatwise Tensile Strength of Sandwich Constructions. Annex A lists out
the comparison of the chapter and article numbers between this standard and ASTM
C297-94(1999).
The main technical differences between this standard and ASTM C297-94(1999) are as
follows.
— This standard adopts fixture with cardan joint;
— This standard has not only flat tension strength indexes; but has flat tension glue
joint line strength indexes for trellis-pattern core.
This standard replaces GB/T 1452-1987 Standard Test Method for Flatwise Tension
Strength of Non-metal Sandwich Constructions.
This standard, in comparison with GB/T 1452-1987, has the major changes as follows.
— Add Foreword;
— Add Scope (See Chapter 1);
— Add Normative references (See Chapter 2);
— Add some terms and definitions (Chapter 1 of 1987 version, Chapter 3 of this
version);
— Add test principle (See Chapter 4);
— Add sample preparation (See Chapter 7);
— Previous test conditions are divided into 2 chapters - test equipment and
conditioning (Chapter 3 of 1987 version, Chapter 5 and Chapter 8 of this version).
Annex A of this standard is informative.
This standard was proposed by China Building Materials Industrial Association.
This standard shall be under the jurisdiction of the National Technical Committee on Fiber
Reinforced Plastic of Standardization Administration of China.
The responsible drafting organization of this standard. Shanghai FRP Research Institute.
The main drafters of this standard. Zhou Zhulin, Wang Yaxiong, and Zhang Zilong.
This standard was first-time issued in 1978, first revised in 1987, and second revised in
2003.
Test method for flatwise tension strength
of sandwich constructions
1 Scope
This standard specifies the test principle, test equipment, samples, conditioning, test
procedures, calculation, test result, and test report etc. of test method for flatwise tension
strength of sandwich constructions.
This standard is applicable to measurement of flatwise tension strength of the core in
sandwich constructions and flatwise tension strength of the core-to-facing bond.
2 Normative references
The articles contained in the following documents have become part of this standard when
they are quoted herein. For the dated documents so quoted, all the modifications
(excluding corrections) or revisions made thereafter shall not be applicable to this
Standard. For the undated documents so quoted, the latest editions shall be applicable to
this Standard.
GB/T 1446-2005 Fiber-reinforced plastics composites - The generals
GB/T 3961 Terms for fibre reinforced plastics
3 Terms and definitions
The following terms and definitions and those established in GB/T 3961 apply to this
standard.
3.1
Flatwise tension
The tension by using the special fixtures along the direction vertical to panels of sandwich
constructions.
3.2
Flatwise tension linear strength
For honeycomb type sandwich construction, it refers to the maximum tensile strength
sustained at the unit jointed side at the direction vertical to panels of sandwich
constructions.
3.3
Honeycomb core
The honeycomb type materials made by means of glue jointing, spot welding, or injection
molding using of metal foil, glass cloth, plastic and various kinds of paper.
3.4
Adhesive layer
The adhesive layer between panel and core in the sandwich constructions.
3.5
Debonding
The segregation phenomenon of panel and core in the sandwich constructions. This
standard also includes the segregation of samples and loading block.
4 Test principle
Apply tensile load at the direction vertical to panel of sandwich structure by using special
tensile fixture with cardan joint, so that to make tensile fracture to core or tensile fracture
to glue jointing between panel and core.
5 Test equipment and test conditions
5.1 Test equipment shall meet the provisions in Chapter 5 of GB/T 1446-2005.
5.2 See Figure 1 for the diagram of tensile fixtures with cardan joint. Cardan joint can be
automatically center-aligning.
5.3 Vernier caliper. accuracy is 0.01mm.
5.4 Load speed is (1-2) mm/min. Arbitration test load speed is 1mm/min.
5.5 Test conditions shall meet the provisions in Chapter 3 of GB/T 1446-2005.
Where.
σa — Wiring strength, in N/m;
La — Glue jointing length in unit area, 1/mm;
d — Length of double-layer honeycomb side in honeycomb, in mm;
c — Length of single-layer honeycomb side in honeycomb, in mm;
θ — Half of single-layer honeycomb wall angle in honeycomb, in °.
11 Test result
It shall be according to the provisions in Chapter 6 of GB/T 1446-2005.
12 Test report
It shall be according to the provisions in Chapter 7 of GB/T 1446-2005.
Annex A
(Informative)
Comparison of chapters and article numbers between this standard and ASTM
C297-94 (1999)
Table A.1 shows the comparison of chapter and article numbers between this standard
and ASTM C297-94 (1999).
Table A.1 Comparison of chapters and article numbers between this standard and
ASTM C297-94 (1999)
Chapters and article numbers of this
standard
Corresponding Chapters and article
numbers of foreign standard
1. Scope 1. Scope
2. Normative references 2. References
3. Terms and definitions —
— 3. Significance and application
4. Test principle —
5. Test equipment and conditions 4. Equipment
6. Sample 5. Sample
7. Sample preparation —
8. Conditioning 6. Conditioning
9. Test procedures 7. Procedures
10. Calculation 8. Calculation
11. Test result —
12. Test report 9. Report
— 10. Accuracy and deviation
— 11. Keywords
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