astm d10 revision - random vibration update vibration profiles… vibration profiles… d4169 truck...
TRANSCRIPT
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Eric Joneson Lansmont, VP of Technology
ASTM D10.21 D4169 Revision - Random Vibration Update
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Vibration Profiles…
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Vibration Profiles…
D4169 Truck Profiles - Origins traced as far back as 19791
1- An Assessment Of The Common Carrier Shipping Environment (1979), General Technical Report FPL 22, Forest Products Laboratory, US Department of Agriculture, Madison, WI.
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Trends in testing community to present on vibration testing methods & rationale…
Vibration Profiles…
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Trends in testing community to measure and report on transport studies…
Transport Measurements…
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Transport Measurements…
Characterization efforts made simpler by use of available technology.
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Transport Measurements…
X
Y
Z
3
1
2
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Transport Measurements…
Transport Measurements…
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Vibration Profile Development…
Three important criteria…
1. Shape
2. Intensity
3. Duration
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Vibration Profile Shape…
Identify any PSD shape trend in measured transport data…
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Comparing trended data to current ASTM D4169 profiles
Vibration Profile Shape…
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There is existing, corresponding ASTM relevance…
Vibration Profile Shape…
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Existing, corresponding ISTA relevance…
Vibration Profile Shape…
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Moving Forward…
Reference well-established ISTA PSD Shape…
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Using statistical analysis from field captured data to help establish targeted Grms levels.
ASTM Truck Level I - 0.73 Grms ASTM Truck Level II - 0.52 Grms ASTM Truck Level III - 0.37 Grms
Vibration Profile Intensity…
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Vibration Profile Intensity…
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Test Sequence Proposed
Grms Proposed Duration
A Low
0.402 40 minutes
B Mid
0.542 15 minutes
C High
0.701 5 minutes
Proposed Schedule…
3X
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Current 4169 Truck – Assurance Level II – 0.52 Grms
Comparative Video…
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Current 4169 Truck – Assurance Level II – 0.52 Grms
Top of stack Bottom of stack
Comparative Video…
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Proposed 4169 Truck – High Level – 0.70 Grms
Comparative Video…
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Proposed 4169 Truck – High Level – 0.70 Grms
Top of stack Bottom of stack
Comparative Video…
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Clemson University – Testing Six Packaged Refrigerators
Assessment
Grade Brief Description
Amount of
Abrasion
0 No visible damage to unit None
1 Minor paint abrasion ≤ 0.5 in.
2 Major paint abrasion and denting ≥ 1.0 in.
3 Structural damage to unit N/A
Initial Laboratory Test Results…
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Vibration Technique Overall Damage
Assessment
ASTM D4169 TL II 2
ASTM New Profiles (3 PSD Profiles) 0
Field Shipment 0
Clemson University – Testing Six Packaged Refrigerators
Improved correlation
Initial Laboratory Test Results…
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Scuffing and abrasion after current D4169 Truck Assurance Level II testing
Initial Laboratory Test Results…
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Less, more representative level of scuffing and abrasion after proposed D4169 Truck Schedule
Initial Laboratory Test Results…
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Next Steps…
Additional packaged-product comparative testing, performed by participating companies, using a variety of product types. Address D4169 air and rail profiles using similar methodology…