ASTM D10 Revision - Random Vibration Update Vibration Profiles… Vibration Profiles… D4169 Truck...
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Eric Joneson Lansmont, VP of Technology ASTM D10.21 D4169 Revision - Random Vibration Update
Transcript of ASTM D10 Revision - Random Vibration Update Vibration Profiles… Vibration Profiles… D4169 Truck...
Eric Joneson Lansmont, VP of Technology
ASTM D10.21 D4169 Revision - Random Vibration Update
Vibration Profiles…
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.
Trends in testing community to present on vibration testing methods & rationale…
Vibration Profiles…
Trends in testing community to measure and report on transport studies…
Transport Measurements…
Transport Measurements…
Characterization efforts made simpler by use of available technology.
Transport Measurements…
X
Y
Z
3
1
2
Transport Measurements…
Transport Measurements…
Vibration Profile Development…
Three important criteria…
1. Shape
2. Intensity
3. Duration
Vibration Profile Shape…
Identify any PSD shape trend in measured transport data…
Comparing trended data to current ASTM D4169 profiles
Vibration Profile Shape…
There is existing, corresponding ASTM relevance…
Vibration Profile Shape…
Existing, corresponding ISTA relevance…
Vibration Profile Shape…
Moving Forward…
Reference well-established ISTA PSD Shape…
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…
Vibration Profile Intensity…
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
Current 4169 Truck – Assurance Level II – 0.52 Grms
Comparative Video…
Current 4169 Truck – Assurance Level II – 0.52 Grms
Top of stack Bottom of stack
Comparative Video…
Proposed 4169 Truck – High Level – 0.70 Grms
Comparative Video…
Proposed 4169 Truck – High Level – 0.70 Grms
Top of stack Bottom of stack
Comparative Video…
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…
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…
Scuffing and abrasion after current D4169 Truck Assurance Level II testing
Initial Laboratory Test Results…
Less, more representative level of scuffing and abrasion after proposed D4169 Truck Schedule
Initial Laboratory Test Results…
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…
