ASTM D10.21 D4169 Revision - Random Vibration Update Eric Joneson Lansmont, VP of Technology
Vibration Profiles…
Vibration Profiles… D4169 Truck Profiles - Origins traced as far back as 1979 1 1- An Assessment Of The Common Carrier Shipping Environment (1979), General Technical Report FPL 22, Forest Products Laboratory, US Department of Agriculture, Madison, WI.
Vibration Profiles… Trends in testing community to present on vibration testing methods & rationale…
Transport Measurements… Trends in testing community to measure and report on transport studies…
Transport Measurements… Characterization efforts made simpler by use of available technology.
Transport Measurements… 3 1 Z X 2 Y
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…
Vibration Profile Shape … Comparing trended data to current ASTM D4169 profiles
Vibration Profile Shape … There is existing, corresponding ASTM relevance…
Vibration Profile Shape … Existing, corresponding ISTA relevance…
Moving Forward… Reference well-established ISTA PSD Shape…
Vibration Profile Intensity … ASTM Truck Level I - 0.73 Grms Using statistical ASTM Truck Level II - 0.52 Grms analysis from field ASTM Truck Level III - 0.37 Grms captured data to help establish targeted Grms levels.
Vibration Profile Intensity …
Proposed Schedule… Proposed Test Sequence Proposed Duration Grms A 0.402 40 minutes Low 3X B 0.542 15 minutes Mid C 0.701 5 minutes High
Comparative Video… 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
Initial Laboratory Test Results… Clemson University – Testing Six Packaged Refrigerators Assessment Amount of Brief Description Grade 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… Clemson University – Testing Six Packaged Refrigerators Overall Damage Vibration Technique Assessment ASTM D4169 TL II 2 ASTM New Profiles (3 PSD Profiles) 0 Field Shipment 0 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
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…
Thank You! Questions… Eric Joneson eric_joneson@lansmont.co m
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