IISSTTAA CCHHIINNAA PPaacckkaaggiinngg …
Transcript of IISSTTAA CCHHIINNAA PPaacckkaaggiinngg …
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ISTA CHINA Packaging SymposiumISTA CHINA Packaging SymposiumISTA CHINA Packaging Symposium
September 17, 2009
Guidelines for Product Improvement:
Usage of all fragile parts’ DBCs on a product
TRI Osaka Takamasa NAKAJIMA
Kobe Univ. Katsuhiko SAITO
9:40-10:15No.13
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Self-introduction of speakerSelfSelf--introduction of speakerintroduction of speaker
Name : Takamasa NAKAJIMAOrganization : TRI Osaka 1988~
<Research>・ Optimal cushioning design method・ Test method for shock fragility of products・ AFS (Accumulated Fatigue Spectrum)
& Vibration Test method by AFS ( K2-Fatigue by IMV )
<Consultancy>・ Packaging (Transportation) ・ Shock & Vibration etc.
<Test & Evaluation>・ Vibration ・ Drop ・ Compression strength・ Shock fragility of product ・ Cushioning material etc.
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Background of the presentationBackground of thBackground of thee presentationpresentation
This plan was selected as a national project, “Feasibility Study of Standardization” last year.
⇒ A new test procedure has been put together.
⇒ We visited CPRTC at Tianjin (Director Li Hua etc.)
and Jinan Univ. at Zhuhai (Prof. Zhi-Wei Wang etc.).
We would like to contribute a new idea to shock test standard all over the world.⇒ Both cost-cut and high quality will be realized.
Purpose of the presentationPurpose of thPurpose of thee presentationpresentation
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Mechanical Shock MachineMechanical Shock MachineMechanical Shock Machine
Accelerometer
Product
Guide Rod
Shock Table
Programmer
Lifter
Measuring System
N2 Gas Cylinder
Controller
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Non-damage
A
ΔV
A
t
DamageInput Shock Pulse
ΔV
Explanation of DBC( Damage Boundary Curve )
Explanation of DBCExplanation of DBC( Damage Boundary Curve )( Damage Boundary Curve )
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Shock Analytical Model by R. E. NewtonShock Analytical Model by R. E. NewtonShock Analytical Model by R. E. Newton
Specimen
Part A (ex. a front panel)
Part C (ex. a power unit)
Part B(ex. a chip computer)
Part D (ex. a frame)
Product
The most fragile part
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Damage Boundary
ACπΔV
C/2
ΔVC
Velocity Change
Acc
eler
atio
nCritical Velocity
Method-B
DBC and Test Method of Shock Fragility
Critical Acceleration
ΔV
A
T
Shock Test
Shock TestMethod A
GB/T 15099, ASTM D 3332, JIS Z 0119 (Dr. R.E.Newton)GB/T 15099, ASTM D 3332, GB/T 15099, ASTM D 3332, JISJIS Z 0119Z 0119 ((Dr. Dr. R.E.NewtonR.E.Newton))
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GB/T 15099、ASTM D 3332 、JIS Z 0119(Dr. R.E.Newton)
GB/T 15099GB/T 15099、、ASTM D 3332 ASTM D 3332 、、JISJIS Z 0119Z 0119((Dr. Dr. R.E.NewtonR.E.Newton))
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Shock test for packaging design
World ー
China GB/T 15099 -94
America ASTM D 3332
EU -
Japan JIS Z 0119
DBCs for all fragile parts↓
Guideline for product improvement
New procedure
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加速度 A
速度変化 ⊿V
損傷境界曲線DBC (Damage Boundary Curve)
Acc
eler
atio
n A
Velocity Change ⊿V
Shock Test by Product Designer & Shock Test by Package Designer( IEC 68-2-27 ASTM D 3332, JIS Z 0119 )
Shock Test by Shock Test by ProductProduct DesignerDesigner && Shock Test by Shock Test by PackagePackage DesignerDesigner( IEC 68( IEC 68--22--27 ASTM D 3332, JIS Z 0119 )27 ASTM D 3332, JIS Z 0119 )
500m/s2、11ms(IEC 68-2-27)
Drop Height
DBC(ASTM D 3332)(JIS Z 0119 2002)
Ac500m/s2 ⇔ 250m/s2
An accident may happen due to lack of cushioning.
If this result is used in packaging design, ....
Ac500m/s2 ⇔ ∞Over-Packaging
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Result of Shock Test for a Video-playerResult of Result of Shock Test for a VideoShock Test for a Video--playerplayer
A hook of a gear comes off. Legs of a coupler break.
Stoppers of a front frame come off.A front panel breaks.
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Shock Analytical Model by R. E. NewtonShock Analytical Model by R. E. NewtonShock Analytical Model by R. E. Newton
Specimen
Part A (ex. a front panel)
Part C (ex. a power unit)
Part B(ex. a chip computer)
Part D (ex. a frame)
Product
Part A Part C Part DPart B
・・・
Product
The most fragile part
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加速度 A
速度変化 ⊿V
損傷境界曲線DBC (Damage Boundary Curve)
Velocity Change ⊿V
Acc
eler
atio
nA
DBC
Part B
Part CPart A
A
B
A
B
C
A
C
A B
Shock Test by Product Designer & Shock Test by Package Designer( IEC 68-2-27 ASTM D 3332, JIS Z 0119 )
Shock Test by Shock Test by ProductProduct DesignerDesigner && Shock Test by Shock Test by PackagePackage DesignerDesigner( IEC 68( IEC 68--22--27 ASTM D 3332, JIS Z 0119 )27 ASTM D 3332, JIS Z 0119 )
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A shock test result of a certain productA shock test result of a certain productA shock test result of a certain product
TestNo.
Accele.m/s2
⊿Vm/s
⊿Tms Observations
1 1930 2.31 2.01 No damage
⊿VTest
2 2110 2.49 1.98 No damage
3 2660 2.90 1.94 Part A was deformed.
4 2790 3.14 1.59 Part B was deformed.
5 3360 3.41 1.50 No damage except for A & B.
6 228 7.41 32.9 異常なし。許容加速度試験
7 279 7.20 26.1 異常なし。
8 323 7.12 22.3 部位Cが変形。
9 376 6.88 18.4 上記の他、部位Aおよび部位Dが変形。
10 419 6.93 16.8 部位A,C,Dの他、異常なし。
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A shock test result of a certain productA shock test result of a certain productA shock test result of a certain product
TestNo.
Accele.m/s2
⊿Vm/s
⊿Tms
Observations
1 1930 2.31 2.01 No damage
⊿VTest
2 2110 2.49 1.98 No damage
3 2660 2.90 1.94 Part A was deformed.
4 2790 3.14 1.59 Part B was deformed.
5 3360 3.41 1.50 No damage except for A & B
6 228 7.41 32.9 No damage
ACTest
7 279 7.20 26.1 No damage
8 323 7.12 22.3 Part C was deformed.
9 376 6.88 18.4 Part A & B was deformed.
10 419 6.93 16.8 No damage except for A,C & D
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製品衝撃強さ(損傷境界曲線)JIS Z 0119
100
1000
10000
1 10
速度変化(m/s)
加速度(m/s2)
Velocity change (m/s)
Acc
eler
atio
n (m
/s2 )
Result of Shock Test (DBC)
ASTM D 3332, JIS Z 0119
No damage
No damage
Part A breaks.
Part B breaks.No damage except for
Part A and Part B
No damageNo damage
Part C breaks.Part A and Part D break.
No damage except for Part A, Part C,
and PartD
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製品衝撃強さ(損傷境界曲線)JIS Z 0119
100
1000
10000
1 10
速度変化(m/s)
加速度(m/s2)
Velocity change (m/s)
Acc
eler
atio
n (m
/s2 )
Result of Shock Test (DBC)
ASTM D 3332, JIS Z 0119
No damage
No damage
Part A breaks.
Part B breaks.No damage except for
Part A and Part B
No damageNo damage
Part C breaks.Part A and Part D break.
No damage except for Part A, Part C,
and PartD
ASTM D 3332
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製品衝撃強さ(損傷境界曲線)JIS Z 0119
100
1000
10000
1 10
速度変化(m/s)
加速度(m/s2)
Velocity change (m/s)
Acc
eler
atio
n (m
/s2 )
Result of Shock Test (DBC)
ASTM D 3332, JIS Z 0119
No damage
No damage
Part A breaks.
No damage( Part C and Part D )
No damageNo damage
New ProcedurePart B breaks.
No damage( Part B )
Part A and Part D break.
Part C breaks.
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New ProcedureResult of Shock Test ( DBC )
(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:A
Damage:C
Damage:A, B
Damage:A,C,D
Damage:A,B,C,D
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Drop Height:19cm 25.5cm 35cm calculated at e=0.3
New ProcedureResult of Shock Test ( DBC )
(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:A
Damage:C
Damage:A, B
Damage:A,C,D
Damage:A,B,C,D
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If Part A is refined, ・・・
Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:C
Damage:B
Damage:C,D
Damage:B,C,D
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If Part A is refined, ・・・
ex. 1 When the max drop height is 30cm, Ac will be improved from 323 ⇒ 419 m/s2.
Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:C
Damage:B
Damage:C,D
Damage:B,C,D
Drop Height:19cm 25.5cm 35cm calculated at e=0.3Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:C
Damage:B
Damage:C,D
Damage:B,C,D
ex. 2 When the max drop height is 40cm, Ac will not be improved.
Effective
Meaningless
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If Part A and Part B are refined, ・・・
Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:C
Damage:C,D
Damage:C,D
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If Part A and Part B are refined, ・・・
Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:C
Damage:C,D
Damage:C,D
Drop Height:19cm 25.5cm 35cm calculated at e=0.3Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:C
Damage:C,D
Damage:C,D
ex. 1 When the max drop height is 30cm, Ac will be improved from 323 ⇒∞ m/s2.
ex. 2 When the max drop height is 40cm, Ac will not be improved.
Very Effective
Meaningless
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If Part C is refined, ・・・
Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:A
Damage:A, B
Damage:A,D
Damage:A,B,D
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If Part C is refined, ・・・
Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:A
Damage:A, B
Damage:A,D
Damage:A,B,D
Drop Height:19cm 25.5cm 35cm calculated at e=0.3Drop Height:19cm 25.5cm 35cm calculated at e=0.3
Result of Shock Test ( DBC )(Enlarged Graph)
200
250
300
350
400
450
500
2 2.5 3 3.5 4Velocity Change ⊿V (m/s)
Acceleration A (m/s2)
Part A
Part B
Part C
Part D
Damage:A
Damage:A, B
Damage:A,D
Damage:A,B,D
ex. 1 When the max drop height is 30cm, Ac will not be improved.
ex. 2 When the max drop height is 40cm, Ac will be improved from 279 ⇒ 323 m/s2.
Effective
Meaningless
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--- The point ---By this new test procedure,product designers can geta guideline of part’s improvement.
Ex. H=30cm ⇒ “Refine Part A.”
or “Refine Part A and B.”H=40cm ⇒ “No need to refine”
or “Refine Part C.”
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Result of Shock Test for a Video-playerResult of Result of Shock Test for a VideoShock Test for a Video--playerplayer
A hook of a gear comes off. Legs of a coupler break.
Stoppers of a front frame come off.A front panel breaks.
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TestNo.
Am/s2
⊿Vm/s
⊿Tms
Observations
1 1180 1.42 2.10 No damage
⊿VcTest
2 1800 2.01 1.95 No damage
3 2280 2.89 2.10 No damage
4 2940 4.09 2.45 No damage
5 4100 4.96 2.05 Gear, Coupler, Panel, Frame
6 199 5.51 28.2 No damage
AcTest
7 389 5.48 14.5 No damage
8 596 5.39 9.55 No damage
9 772 5.52 7.56 Gear, Coupler
10 951 5.38 6.16 No damage except for the above
A shock test result of a certain productA shock test result of a certain productA shock test result of a certain product
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Thank you very much
for your kind attention.